From 3d5aa2d752c26d292b705f7d85fb276df1cfd38c Mon Sep 17 00:00:00 2001 From: Jeremy Karst Date: Thu, 20 Aug 2026 18:58:25 -0400 Subject: [PATCH] Performance optimization pass dramatically speeds up fuzzy, regex, and wildcard searches by using trigram prefilters. Reduced memory churn. Added FTX extraction testing for a variety of formats. --- .gitattributes | 11 + Cargo.lock | 144 ++- Cargo.toml | 52 +- README.md | 24 +- config_example.toml | 20 +- crates/quicksearch-core/Cargo.toml | 58 +- crates/quicksearch-core/benches/search.rs | 121 ++- crates/quicksearch-core/src/config/mod.rs | 71 ++ crates/quicksearch-core/src/config/tests.rs | 58 ++ crates/quicksearch-core/src/db/mod.rs | 2 +- crates/quicksearch-core/src/db/open.rs | 106 +- crates/quicksearch-core/src/db/open_tests.rs | 120 +++ crates/quicksearch-core/src/db/repo.rs | 82 +- crates/quicksearch-core/src/db/repo_tests.rs | 71 ++ crates/quicksearch-core/src/db/schema.rs | 7 +- crates/quicksearch-core/src/extract/office.rs | 144 ++- crates/quicksearch-core/src/extract/ole.rs | 76 +- .../quicksearch-core/src/extract/ole_tests.rs | 100 ++ .../quicksearch-core/src/extract/plaintext.rs | 83 +- crates/quicksearch-core/src/extract/rtf.rs | 137 ++- .../src/file_handling/batch.rs | 35 +- .../file_handling/count_and_extract_tests.rs | 31 + .../src/file_handling/counting.rs | 57 +- .../src/file_handling/paths.rs | 20 + .../src/file_handling/tests.rs | 115 +++ crates/quicksearch-core/src/incremental.rs | 83 ++ crates/quicksearch-core/src/live.rs | 30 +- crates/quicksearch-core/src/live_tests.rs | 38 + crates/quicksearch-core/src/query/pattern.rs | 113 ++- crates/quicksearch-core/src/search/cascade.rs | 103 +- .../src/search/cascade/passes.rs | 351 +++++-- crates/quicksearch-core/src/search/fuzzy.rs | 138 ++- crates/quicksearch-core/src/search/mod.rs | 1 + .../quicksearch-core/src/search/prefilter.rs | 222 ++++ crates/quicksearch-core/src/snippet.rs | 270 ++++- crates/quicksearch-core/src/textenc.rs | 48 +- crates/quicksearch-core/src/watcher.rs | 15 +- crates/quicksearch-core/src/watcher_tests.rs | 37 + crates/quicksearch-core/tests/cascade.rs | 166 +++ crates/quicksearch-core/tests/common/mod.rs | 188 ++++ crates/quicksearch-core/tests/corpus/audio.rs | 130 +++ .../quicksearch-core/tests/corpus/legacy.rs | 142 +++ crates/quicksearch-core/tests/corpus/mod.rs | 338 +++++++ crates/quicksearch-core/tests/corpus/odf.rs | 150 +++ crates/quicksearch-core/tests/corpus/ooxml.rs | 132 +++ crates/quicksearch-core/tests/corpus/pdf.rs | 69 ++ .../tests/corpus/plaintext.rs | 283 ++++++ crates/quicksearch-core/tests/corpus/rtf.rs | 82 ++ .../tests/corpus/zipwriter.rs | 99 ++ .../tests/extraction_corpus.rs | 337 ++++++ .../tests/fixtures/legacy/README.md | 61 ++ .../tests/fixtures/legacy/deck.fodp | 38 + .../tests/fixtures/legacy/prose.txt | 6 + .../tests/fixtures/legacy/regen.sh | 39 + .../tests/fixtures/legacy/sample.doc | Bin 0 -> 10240 bytes .../tests/fixtures/legacy/sample.ppt | Bin 0 -> 462848 bytes .../tests/fixtures/legacy/sample.xls | Bin 0 -> 6144 bytes .../tests/fixtures/legacy/sheet.csv | 6 + .../tests/fixtures/silence.flac | Bin 0 -> 8299 bytes crates/quicksearch-core/tests/full_index.rs | 39 +- .../quicksearch-core/tests/prefilter_fuzz.rs | 779 ++++++++++++++ crates/quicksearch-core/tests/search_alloc.rs | 587 +++++++++++ crates/quicksearch-core/tests/snippet_perf.rs | 2 +- .../quicksearch-gui/src/search_tab/tests.rs | 132 +++ packaging/copyright | 10 +- vendor/rtf-parser/Cargo.toml | 58 ++ vendor/rtf-parser/LICENSE.md | 7 + vendor/rtf-parser/README.md | 254 +++++ vendor/rtf-parser/src/document.rs | 96 ++ vendor/rtf-parser/src/header.rs | 105 ++ vendor/rtf-parser/src/lexer.rs | 366 +++++++ vendor/rtf-parser/src/lib.rs | 23 + vendor/rtf-parser/src/paragraph.rs | 74 ++ vendor/rtf-parser/src/parser.rs | 957 ++++++++++++++++++ vendor/rtf-parser/src/tokens.rs | 280 +++++ vendor/rtf-parser/src/utils.rs | 115 +++ 76 files changed, 9070 insertions(+), 274 deletions(-) create mode 100644 crates/quicksearch-core/src/search/prefilter.rs create mode 100644 crates/quicksearch-core/tests/corpus/audio.rs create mode 100644 crates/quicksearch-core/tests/corpus/legacy.rs create mode 100644 crates/quicksearch-core/tests/corpus/mod.rs create mode 100644 crates/quicksearch-core/tests/corpus/odf.rs create mode 100644 crates/quicksearch-core/tests/corpus/ooxml.rs create mode 100644 crates/quicksearch-core/tests/corpus/pdf.rs create mode 100644 crates/quicksearch-core/tests/corpus/plaintext.rs create mode 100644 crates/quicksearch-core/tests/corpus/rtf.rs create mode 100644 crates/quicksearch-core/tests/corpus/zipwriter.rs create mode 100644 crates/quicksearch-core/tests/extraction_corpus.rs create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/README.md create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/deck.fodp create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/prose.txt create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/regen.sh create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/sample.doc create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/sample.ppt create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/sample.xls create mode 100644 crates/quicksearch-core/tests/fixtures/legacy/sheet.csv create mode 100644 crates/quicksearch-core/tests/fixtures/silence.flac create mode 100644 crates/quicksearch-core/tests/prefilter_fuzz.rs create mode 100644 crates/quicksearch-core/tests/search_alloc.rs create mode 100644 vendor/rtf-parser/Cargo.toml create mode 100644 vendor/rtf-parser/LICENSE.md create mode 100644 vendor/rtf-parser/README.md create mode 100644 vendor/rtf-parser/src/document.rs create mode 100644 vendor/rtf-parser/src/header.rs create mode 100644 vendor/rtf-parser/src/lexer.rs create mode 100644 vendor/rtf-parser/src/lib.rs create mode 100644 vendor/rtf-parser/src/paragraph.rs create mode 100644 vendor/rtf-parser/src/parser.rs create mode 100644 vendor/rtf-parser/src/tokens.rs create mode 100644 vendor/rtf-parser/src/utils.rs diff --git a/.gitattributes b/.gitattributes index df6e38b..84a4800 100644 --- a/.gitattributes +++ b/.gitattributes @@ -4,3 +4,14 @@ *.bat text eol=crlf *.cmd text eol=crlf *.sh text eol=lf + +# The extraction corpus's committed fixtures. `.doc`/`.xls`/`.ppt` are OLE2 +# compound files and `.flac` is an audio stream: an EOL filter applied to any +# of them corrupts the file, and `text` detection is a heuristic this does not +# need to rely on. `*.bat` above is `text eol=crlf` crate-wide, which would +# otherwise catch the `.bat` the corpus generates — but that one is written at +# test time and never enters git. +crates/quicksearch-core/tests/fixtures/**/*.doc binary +crates/quicksearch-core/tests/fixtures/**/*.xls binary +crates/quicksearch-core/tests/fixtures/**/*.ppt binary +crates/quicksearch-core/tests/fixtures/**/*.flac binary diff --git a/Cargo.lock b/Cargo.lock index 9fee860..b19e13c 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -463,9 +463,9 @@ dependencies = [ [[package]] name = "bumpalo" -version = "3.16.0" +version = "3.20.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c" +checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649" [[package]] name = "bytemuck" @@ -789,9 +789,9 @@ dependencies = [ [[package]] name = "crc32fast" -version = "1.4.2" +version = "1.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3" +checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511" dependencies = [ "cfg-if", ] @@ -955,6 +955,20 @@ dependencies = [ "litrs", ] +[[package]] +name = "docx-rs" +version = "0.4.21" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "917eb338de7885a7bf6de3bb294ccbc6d64f0250430e40605d2f2e7e0ee4259a" +dependencies = [ + "base64", + "quick-xml", + "serde", + "serde_json", + "thiserror 2.0.19", + "zip 8.6.0", +] + [[package]] name = "downcast-rs" version = "1.2.1" @@ -1321,6 +1335,7 @@ checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c" dependencies = [ "crc32fast", "miniz_oxide", + "zlib-rs", ] [[package]] @@ -1827,6 +1842,17 @@ dependencies = [ "zerovec", ] +[[package]] +name = "id3" +version = "1.17.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "24993fcabcbc07c8ac076a8e62db8593d1a5c4dbe81d57e531d2b7cb7f737380" +dependencies = [ + "bitflags 2.13.1", + "byteorder", + "flate2", +] + [[package]] name = "idna" version = "1.1.0" @@ -2244,6 +2270,16 @@ dependencies = [ "autocfg", ] +[[package]] +name = "metaflac" +version = "0.2.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fdf25a3451319c52a4a56d956475fbbb763bfb8420e2187d802485cb0fd8d965" +dependencies = [ + "byteorder", + "hex", +] + [[package]] name = "mime" version = "0.3.17" @@ -2872,6 +2908,18 @@ dependencies = [ "unicode-normalization", ] +[[package]] +name = "pdf-writer" +version = "0.15.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f5e456864a7a304047bff84977dc6fb162bd956475d40ba50b2dcecaada7f753" +dependencies = [ + "bitflags 2.13.1", + "itoa", + "memchr", + "ryu", +] + [[package]] name = "percent-encoding" version = "2.3.1" @@ -3036,45 +3084,53 @@ version = "0.41.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e660451e55124f798a69a5af3f49ccfbefbd41910eefd25caf2393e1f3473ec1" dependencies = [ + "encoding_rs", "memchr", ] [[package]] name = "quicksearch-core" -version = "1.1.2" +version = "1.1.3" dependencies = [ "argon2", "cfb", "chardetng", + "crc32fast", "ctrlc", "divan", + "docx-rs", "encoding_rs", "getrandom 0.2.15", "globset", + "id3", "infer", "libc", "lofty", "memchr", + "metaflac", "mime_guess", "notify", "pdf-extract", + "pdf-writer", "quick-xml", "regex", + "regex-syntax", "rtf-parser", "rusqlite", + "rust_xlsxwriter", "serde", "sha2", "toml", "walkdir", "windows-sys 0.52.0", "zeroize", - "zip", + "zip 0.6.6", "zstd", ] [[package]] name = "quicksearch-gui" -version = "1.1.2" +version = "1.1.3" dependencies = [ "ashpd", "chrono", @@ -3310,8 +3366,6 @@ dependencies = [ [[package]] name = "rtf-parser" version = "0.4.3" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8c3147b4eb521eae5e29b781bdc30ab98bbaed784bfcb8376cda60ba4b2e0e3d" dependencies = [ "serde", ] @@ -3341,6 +3395,15 @@ dependencies = [ "sqlite-wasm-rs", ] +[[package]] +name = "rust_xlsxwriter" +version = "0.98.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "093d730a6f64f9620e047b2de2876e61a691fbcaca3aaf436edade9b897c7a27" +dependencies = [ + "zip 8.6.0", +] + [[package]] name = "rustc-hash" version = "1.1.0" @@ -3394,6 +3457,12 @@ version = "1.0.23" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f" +[[package]] +name = "ryu" +version = "1.0.23" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f" + [[package]] name = "same-file" version = "1.0.6" @@ -3451,6 +3520,19 @@ dependencies = [ "syn 3.0.3", ] +[[package]] +name = "serde_json" +version = "1.0.151" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14" +dependencies = [ + "itoa", + "memchr", + "serde", + "serde_core", + "zmij", +] + [[package]] name = "serde_repr" version = "0.1.19" @@ -3928,6 +4010,12 @@ dependencies = [ "pom", ] +[[package]] +name = "typed-path" +version = "0.12.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8e28f89b80c87b8fb0cf04ab448d5dd0dd0ade2f8891bae878de66a75a28600e" + [[package]] name = "typenum" version = "1.17.0" @@ -5054,6 +5142,44 @@ dependencies = [ "flate2", ] +[[package]] +name = "zip" +version = "8.6.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2d04a6b5381502aa6087c94c669499eb1602eb9c5e8198e534de571f7154809b" +dependencies = [ + "crc32fast", + "flate2", + "indexmap", + "memchr", + "typed-path", + "zopfli", +] + +[[package]] +name = "zlib-rs" +version = "0.6.7" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "34b31d188d9d685a4f9c7b46d6e36631b07058d2cfe190267adce54dc230bf12" + +[[package]] +name = "zmij" +version = "1.0.23" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b" + +[[package]] +name = "zopfli" +version = "0.8.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f05cd8797d63865425ff89b5c4a48804f35ba0ce8d125800027ad6017d2b5249" +dependencies = [ + "bumpalo", + "crc32fast", + "log", + "simd-adler32", +] + [[package]] name = "zstd" version = "0.13.3" diff --git a/Cargo.toml b/Cargo.toml index d7f3350..2bef85e 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -4,11 +4,11 @@ members = [ "crates/quicksearch-core", "crates/quicksearch-gui", ] -# `vendor/pdf-extract` is deliberately NOT a member: it is a third-party crate -# carried here for one patch, not part of this workspace's lints, tests or +# The `vendor/` crates are deliberately NOT members: they are third-party code +# carried here for a patch each, not part of this workspace's lints, tests or # release profile. `[patch.crates-io]` below is what makes the dependency graph -# resolve to it. -exclude = ["vendor/pdf-extract"] +# resolve to them. +exclude = ["vendor/pdf-extract", "vendor/rtf-parser"] # pdf-extract 0.12.0, with the two unbounded recursions in it bounded. # @@ -27,11 +27,53 @@ exclude = ["vendor/pdf-extract"] # keeps meaning what it means, and the cross-compile job needs no new host. # The patch is marked LOCAL PATCH in the source and is upstreamable; the crate # is MIT and the copy is recorded in `packaging/copyright`. +# rtf-parser 0.4.3, with its lexer taught where an RTF control word ends. +# +# The format's rule is that a control word runs `\` plus letters plus an +# optional numeric parameter, and ends at the first character that is neither — +# a space if there is one, which is swallowed as the delimiter, otherwise +# whatever that character is, which is *not* swallowed. The crate's lexer ends +# it at whitespace and nothing else. Two consequences, both of which lose +# indexed text silently rather than failing the file: +# +# * A `\uN` escape is followed by an ANSI fallback character for readers that +# predate Unicode, and the spec lets that be any character. `\u233?after` +# lexes as one unrecognised control word, so the character *and the rest of +# the word* vanish. LibreOffice writes `\uN\'3f` and dodges it; a literal +# `?` is just as legal and just as common. +# * After a `\'hh` escape the lexer re-tokenises the remainder and trims its +# leading spaces before classifying it. A remainder that is plain text +# keeps them; one that begins with another escape does not. So two adjacent +# words made entirely of escapes come back joined — `Καλημέρα κόσμε` as +# `Καλημέρακόσμε`, one FTS term where there were two. That reproduces on a +# file LibreOffice wrote, and it hits every script outside cp1252. +# +# Both were found by `tests/extraction_corpus.rs`, which is also what pins them +# fixed. A third patch replaces the two production `unwrap()`s in the parser: +# `String::from_utf16` on whatever `\uN` supplied panicked on a lone surrogate, +# and RTF is one of the two formats that also extract at *walk* time, where a +# panicking worker costs the root its whole content pass. That file now costs +# one replacement character instead of the whole document. +# +# One behaviour change is not a bug fix and is worth knowing about. Fixing the +# first bug leaves the ANSI fallback character sitting in the token stream as +# ordinary text, so the parser now counts fallbacks off against `\ucN` the way +# the specification says, rather than recognising only the `\'hh` spelling by +# guesswork. A document that writes `\u233 text` — space delimiter, no +# fallback, no `\uc0` — therefore loses the `t`, which is what Word does with +# that document too. It used to keep it. +# +# Vendored for the same reasons pdf-extract is, below: the build stays offline, +# `--locked` keeps meaning what it means, and the cross-compile job needs no +# new host. 0.4.3 is the latest release, so there is no upgrade to wait for. +# The patches are marked LOCAL PATCH in the source and are upstreamable; the +# crate is MIT and the copy is recorded in `packaging/copyright`. [patch.crates-io] pdf-extract = { path = "vendor/pdf-extract" } +rtf-parser = { path = "vendor/rtf-parser" } [workspace.package] -version = "1.1.2" +version = "1.1.3" edition = "2021" license = "GPL-3.0-or-later" authors = ["Jeremy "] diff --git a/README.md b/README.md index dfaad84..3c171c4 100644 --- a/README.md +++ b/README.md @@ -232,7 +232,11 @@ by the running process — so a crash or a power cut releases it, and the leftover file never locks you out. The lock follows `database_path`: point Settings at a different index and it moves with you, and if that index belongs to another instance the change is refused rather than written, so a -path you cannot open can never end up in the config file. +path you cannot open can never end up in the config file. A path naming +some *other* program's SQLite database is refused for the same reason: the +file there is created when missing and replaced when it is an index from an +older layout of QuickSearch's own, but anything else is left alone and the +error names the tables that identified it. - **Search**: results appear as you type; every keystroke cancels the previous search. One checkbox enables the two fuzzy passes, and once a @@ -457,6 +461,12 @@ combination, plus one key, joined with `+`. An empty string switches it off. A value that is not a shortcut is not a config error — the app loads, says so on the Settings tab, and runs without one. +Numbers behave the same way. A hand-edited value outside the range a +setting can work in — `display_limit = 0`, which would make every search +return nothing — is clamped to the nearest workable one with a warning, +never rejected: a typo in a text file must not stop the app starting. The +ranges are in `config_example.toml` beside each setting that has one. + `[ui] color_scheme` is `dark` (the default) or `light`, changeable on the Settings tab and applied without a restart. It does not follow the desktop's own light/dark setting: on Linux nothing in the window system @@ -885,8 +895,16 @@ microseconds regardless of row count. program, so the installer needs no Windows runner either. - New extractors: implement `extract::Extractor` and register it in `Registry::default_set()` — order matters, the first extractor whose - `supports` accepts a MIME wins. New cascade behavior: `search/cascade.rs` - documents the rank invariants that keep streamed results append-only. + `supports` accepts a MIME wins. Then add the format to the corpus in + `crates/quicksearch-core/tests/corpus/`, which writes a randomized lipsum + document in every supported format and asserts the planted text comes back — + at the extractor, through the walk-time head path, and end to end through + indexing and search (`tests/extraction_corpus.rs`). Its rule is that no + corpus file may be written by the library that reads it back, since a writer + and reader sharing a wrong assumption agree with each other; the module docs + say which library writes what and why. New cascade behavior: + `search/cascade.rs` documents the rank invariants that keep streamed results + append-only. - `packaging/capture.sh`: regenerates the website assets — `search.webm`, `manage-indexing.webm`, `duplicates.png`, `query-highlight.png` — into `packaging/captures/` (gitignored). It builds the GUI with the `capture` diff --git a/config_example.toml b/config_example.toml index b40d516..cdb5565 100644 --- a/config_example.toml +++ b/config_example.toml @@ -21,6 +21,11 @@ indexing_paths = ["~"] # backslashes need no escaping, and keep the index out of a roaming # profile — it is far too large to synchronise: # database_path = 'C:\Users\you\AppData\Local\quicksearch\index.sqlite' +# +# The file here is created if it is missing, and replaced if it is an index +# from an older layout of QuickSearch's own. A SQLite database belonging to +# some other program is neither: pointing this at one is refused with an +# error naming the tables it found, and nothing is deleted. database_path = "~/.local/share/quicksearch/index.sqlite" [indexing] @@ -107,10 +112,15 @@ ignore_patterns = [".git", "node_modules", "*.tmp", ".venv", "venv"] # images: a fixed-size VHD stores its unique footer at the end of the # file, and a freshly pre-allocated raw/qcow2/VMDK image is all zeros at # the head until it is partitioned. +# +# Clamped to 262..1048576 on load: below 262 the longest magic-number +# matcher cannot run, so file types stop being detectable by content, and +# above a megabyte the per-file head buffer stops being a head. hash_length = 8192 # Maximum extracted text stored per file (bytes). maximum_text_size = 262144 -# Files larger than this skip text extraction entirely (bytes). +# Files larger than this skip text extraction entirely (bytes). Clamped to +# 1..4294967296 on load. maximum_text_file_size = 2097152 # Files per batch during walks / inserts / extraction. batch_size = 500 @@ -118,7 +128,9 @@ batch_size = 500 # on (milliseconds). The time half of the knob whose row half is batch_size: # it bounds how long one root can hold up the others, so a root extracting # large documents cannot leave another root's walkers parked behind it. 0 -# gives each turn one batch_size quantum and no more. +# gives each turn one batch_size quantum and no more. Clamped to 0..10000 +# on load: unbounded, one root holds the writer for as long as it likes and +# every other root's walk waits behind it. writer_turn_slice_ms = 100 # Files per transaction for incremental FTS updates. fts_update_batch_size = 1000 @@ -203,7 +215,9 @@ fuzzy_default = false # the fuzzy stages off. Above 3 is allowed but not recommended: matches # become dominated by coincidence and every fuzzy pass slows down. fuzzy_max_edits = 2 -# Hard cap on results per search (the GUI's scroll list length). +# Hard cap on results per search (the GUI's scroll list length). Clamped to +# 1..1000000 on load: at zero the cascade stops before its first pass, so +# every search returns nothing and calls the empty answer truncated. display_limit = 1000 # Results per streamed batch (latency/overhead knob, not a page size). results_per_page = 100 diff --git a/crates/quicksearch-core/Cargo.toml b/crates/quicksearch-core/Cargo.toml index 5b21d31..d674754 100644 --- a/crates/quicksearch-core/Cargo.toml +++ b/crates/quicksearch-core/Cargo.toml @@ -51,8 +51,19 @@ encoding_rs = "0.8" # UTF-8 nor BOM-marked. Its mandatory deps beyond encoding_rs are tiny # (cfg-if, memchr, detone). chardetng = "1.0" -# RTF text extraction. Pure Rust; with the default `jsbindings` feature off -# (it exists for the crate's WASM build) it depends only on serde. +# RTF text extraction. Pure Rust; depends only on serde. +# +# Resolves to `vendor/rtf-parser` through the workspace's `[patch.crates-io]`, +# which is also where the reasons are written down: the stock lexer ended a +# control word at whitespace and nowhere else, which silently dropped indexed +# text from two shapes of document that LibreOffice and Word produce, and the +# parser panicked on a malformed `\uN` escape. The version here still names +# 0.4 because that is what the patch is against. +# +# `default-features = false` is redundant against the vendored copy, which has +# no features left to disable — the `jsbindings` one existed for the crate's +# WebAssembly build and was deleted. It stays so that dropping the patch falls +# back to a registry build that does not pull wasm-bindgen. rtf-parser = { version = "0.4", default-features = false } # `lopdf` is deliberately NOT declared here. `pdf-extract` re-exports it # (`pub use lopdf::*`), and `extract/pdf.rs` reaches it that way. Naming it @@ -68,6 +79,11 @@ ctrlc = "3.4" zstd = "0.13" globset = "0.4" regex = "1" +# Required-literal extraction for the `regex:` prefilter: the same analysis the +# regex engine does to pick its own prefilter, reused to narrow which rows the +# regex passes ever see. Already in the lockfile transitively (via `regex`), so +# naming it directly compiles nothing new. +regex-syntax = "0.8" # SIMD substring search for the full-text passes. `str::match_indices` uses # std's Two-Way searcher, which has no vector prefilter: measured against a # 256 KiB body (`benches/search.rs`, group `substring`) it runs 111 µs where @@ -117,6 +133,44 @@ windows-sys = { version = "0.52", features = [ [dev-dependencies] divan = "0.1" +# Writers for `tests/extraction_corpus.rs`. Every one of these is chosen to be +# a *different implementation* from the reader it feeds: a fixture built with +# the same library that parses it can only prove the two agree with each other, +# not that either agrees with the format. The unit tests in `src/extract/` do +# use the readers' own libraries, deliberately — they aim at malformed input, +# where the point is to control every byte. This set aims at well-formed input +# from a foreign producer, which is the other half. +# +# None of these reach the release binary: dev-dependencies are linked into test +# and bench targets only. +# +# `.doc`/`.xls`/`.ppt` are absent because nothing in Rust writes OLE2 compound +# files but `cfb`, which is the reader. Those three are committed fixtures from +# LibreOffice instead; see `tests/fixtures/legacy/`. +# +# docx: writes its own OOXML, and carries `zip` 8.x — a different major from +# the 0.6 our reader uses, so even the container bytes come from elsewhere. +# The default `image` feature pulls the whole `image` crate for embedding +# pictures, which nothing here does. +docx-rs = { version = "0.4", default-features = false } +# xlsx: builds a real shared-string table, which is the path `extract_xlsx` +# actually cares about. +rust_xlsxwriter = { version = "0.98", default-features = false } +# pdf: typst's low-level writer. No `lopdf` anywhere in its tree, which is what +# makes it independent of `pdf-extract`. +pdf-writer = "0.15" +# audio tags: `id3` writes the ID3v2 frames `lofty` reads back, `metaflac` the +# Vorbis comment block. The MPEG frames under the first are hand-rolled; the +# FLAC stream under the second is committed, because `lofty` reads a real audio +# frame to derive the stream's properties and a FLAC frame is CRC-checked +# bit-packed data rather than a fixed header. See `tests/corpus/audio.rs`. +id3 = "1" +metaflac = "0.2" +# CRC32 for the hand-rolled stored-entry zip that builds the pptx and ODF +# containers. Already in the lockfile transitively via `zip`, so naming it +# here compiles nothing new. +crc32fast = "1" + # `harness = false` on both: divan supplies its own `main` via `divan::main()`, # so libtest must not also link one in. [[bench]] diff --git a/crates/quicksearch-core/benches/search.rs b/crates/quicksearch-core/benches/search.rs index 15e2248..7d2f26e 100644 --- a/crates/quicksearch-core/benches/search.rs +++ b/crates/quicksearch-core/benches/search.rs @@ -163,6 +163,37 @@ mod substring { bencher.bench(|| finder.find_iter(divan::black_box(text)).count()); } + /// A `Finder` built once per query against one built per call. + /// + /// **A losing arm, kept as the record.** `memmem::find_iter(hay, needle)` + /// constructs a searcher every time, and the full-text pass calls it once + /// or twice per candidate row, so hoisting that into the compiled pattern + /// looks like free money. It is not: medians of 35.5 ns against 35.2 at + /// 1 KiB and 3.18 µs against 3.17 at 256 KiB — indistinguishable at every + /// size, including the smallest, where setup would dominate if it were + /// going to. + /// + /// The reason is that the precompute is O(needle), and a search term is a + /// handful of bytes. What *did* cost something on this path was the + /// `to_ascii_lowercase` rebuilding the needle per row, and that is an + /// allocation rather than a searcher — see `snippet::extract_folded`, which + /// borrows an already-folded term instead. + #[divan::bench(args = corpus::SIZES)] + fn memmem_per_call_miss(bencher: Bencher, size: usize) { + let text = corpus::text(size, 0).as_bytes(); + bencher.bench(|| { + memchr::memmem::find_iter(divan::black_box(text), corpus::NEEDLE.as_bytes()).count() + }); + } + + #[divan::bench(args = corpus::SIZES)] + fn memmem_per_call_hits(bencher: Bencher, size: usize) { + let text = corpus::text(size, 64).as_bytes(); + bencher.bench(|| { + memchr::memmem::find_iter(divan::black_box(text), corpus::NEEDLE.as_bytes()).count() + }); + } + #[divan::bench(args = corpus::SIZES)] fn match_indices_hits(bencher: Bencher, size: usize) { let text = corpus::text(size, 64); @@ -176,11 +207,32 @@ mod substring { bencher.bench(|| finder.find_iter(divan::black_box(text)).count()); } - /// What `pass_fulltext` actually runs per row, through the real crate - /// entry points: a case-sensitive count, then a folded count, then the - /// snippet extraction. Three sweeps of the same document. + /// What `pass_fulltext` runs per row on the literal path, through the + /// real crate entry points: a case-sensitive count, then one folded + /// extraction that yields the count and the snippet together. #[divan::bench(args = corpus::SIZES)] fn cascade_row_sweeps(bencher: Bencher, size: usize) { + let pattern = literal(corpus::NEEDLE); + let text = corpus::text_mixed(size, 4); + let folded = corpus::text_folded(size, 4); + let opts = snippet::Options { approx_chars: 600 }; + bencher.bench(|| { + let (s, b) = snippet::extract_folded( + divan::black_box(text), + divan::black_box(folded), + &[corpus::NEEDLE], + &opts, + ); + let a = pattern.count(text, false); + (a, b, s.ranges.len()) + }); + } + + /// The shape it replaced, kept as the comparison: counting the folded + /// haystack separately from extracting the window sweeps the same + /// document a third time for a number the extraction already knew. + #[divan::bench(args = corpus::SIZES)] + fn cascade_row_sweeps_separate_count(bencher: Bencher, size: usize) { let pattern = literal(corpus::NEEDLE); let text = corpus::text_mixed(size, 4); let folded = corpus::text_folded(size, 4); @@ -188,15 +240,14 @@ mod substring { bencher.bench(|| { let a = pattern.count(divan::black_box(text), false); let b = pattern.count_folded(divan::black_box(folded)); - let s = snippet::extract_folded(text, folded, &[corpus::NEEDLE], &opts); + let (s, _) = snippet::extract_folded(text, folded, &[corpus::NEEDLE], &opts); (a, b, s.ranges.len()) }); } } -/// Snippet extraction against a pre-folded haystack, the third of those -/// sweeps. Also carries a per-call `term.to_ascii_lowercase()` at -/// `snippet.rs:81` for a needle the caller already holds folded. +/// Snippet extraction against a pre-folded haystack — on the literal path, +/// now the *only* folded sweep of a row, and the source of its count. mod snippet_extract { use super::*; @@ -325,6 +376,62 @@ mod filename_ladder { found }); } + + /// `find_ascii_ci`'s scalar candidate loop against a `memchr2` one. + /// + /// **A losing arm, kept as the record.** The production function walks the + /// haystack a byte at a time comparing `to_ascii_lowercase()`; `memchr2` + /// finds the next byte matching either case of the needle's first byte with + /// SIMD and only then compares. That looks like it must win, and it does + /// not: 47.9 µs against 49.0 µs median, inside the run-to-run spread. + /// + /// Two reasons, both about *short* haystacks. `memchr2` has per-call setup + /// to amortize and a filename is tens of bytes, not a document; and the + /// scalar loop's inner comparison almost never fires, because a first byte + /// that occurs rarely in the corpus makes the loop a plain byte scan the + /// compiler already vectorizes. + /// + /// Fold-free and allocation-free either way, so this isolates the search + /// itself — unlike the arms above, which conflate it with a fold. If a + /// future change makes this pass run over many more rows, re-measure; as it + /// stands the SQL `LIKE` prefilter means the classifier barely runs at all + /// for literal terms, so this was never where the time was. + #[divan::bench] + fn find_first_ci_memchr2(bencher: Bencher) { + let rows = corpus::rows(); + let needle = corpus::NEEDLE.as_bytes(); + // The same shape `TermPattern::find_ascii_ci` would take. + fn find(hay: &[u8], needle: &[u8]) -> Option { + let (lo, up) = ( + needle[0].to_ascii_lowercase(), + needle[0].to_ascii_uppercase(), + ); + let last = hay.len().checked_sub(needle.len())?; + let mut at = 0usize; + while at <= last { + let Some(off) = memchr::memchr2(lo, up, &hay[at..=last]) else { + return None; + }; + let i = at + off; + if hay[i..i + needle.len()].eq_ignore_ascii_case(needle) { + return Some(i); + } + at = i + 1; + } + None + } + bencher.bench(|| { + let mut found = 0usize; + for row in divan::black_box(rows) { + if find(row.name.as_bytes(), needle).is_some() + || find(row.path.as_bytes(), needle).is_some() + { + found += 1; + } + } + found + }); + } } /// Bitap, the fuzzy passes' inner loop. Both fuzzy passes are whole-table diff --git a/crates/quicksearch-core/src/config/mod.rs b/crates/quicksearch-core/src/config/mod.rs index 8ae4b80..791fbde 100644 --- a/crates/quicksearch-core/src/config/mod.rs +++ b/crates/quicksearch-core/src/config/mod.rs @@ -535,6 +535,13 @@ impl Config { let mut cfg: Config = toml::from_str(&content) .map_err(|e| format!("Failed to parse config file {}: {}", path.display(), e))?; cfg.source = Some(path.to_path_buf()); + // Before anything reads a value — and in particular before + // `config_check` compares `hash_length` against what the index was + // built with, or a clamp applied later would read as a changed + // setting and force a rebuild. + for warning in cfg.clamp_out_of_range() { + crate::log_warn!("config: {}", warning); + } Ok(cfg) } else { let cfg = Config { @@ -546,6 +553,70 @@ impl Config { } } + /// Bring values that would break the program back into range, returning a + /// line about each one changed. + /// + /// Clamps, never rejects: this file is hand-editable and a typo in it must + /// not stop the app starting, the same position `main.rs` takes on a file + /// that will not parse at all. Only the fields that are *not* already + /// defended where they are used appear here — `results_per_page`, + /// `root_workers`, `ui.scale`, `maximum_wal_size`, `batch_size` and + /// `reindex_interval_minutes` all clamp at their call sites, and doing it + /// twice would just be two places to disagree. + fn clamp_out_of_range(&mut self) -> Vec { + let mut warnings = Vec::new(); + let mut clamp = |name: &str, value: &mut u64, lo: u64, hi: u64| { + let bounded = (*value).clamp(lo, hi); + if bounded != *value { + warnings.push(format!( + "{} is {}, which is out of range; using {}", + name, *value, bounded + )); + *value = bounded; + } + }; + + // Zero means every search returns nothing at all: `cascade::run` + // computes `remaining()` as zero and stops before its first pass, and + // reports the empty result as truncated. + let mut display_limit = self.search.display_limit as u64; + clamp("[search] display_limit", &mut display_limit, 1, 1_000_000); + self.search.display_limit = display_limit as usize; + + // The last ceiling on how much an extractor reads: the extractors cap + // a single read, but this is what decides which files they open at all. + clamp( + "[processing] maximum_text_file_size", + &mut self.processing.maximum_text_file_size, + 1, + 4 * 1024 * 1024 * 1024, + ); + + // Below 262 bytes `infer`'s longest magic-number matcher cannot run, + // so file types stop being detectable by content; above a megabyte the + // walk's per-file head buffer stops being a head. + let mut hash_length = self.processing.hash_length as u64; + clamp( + "[processing] hash_length", + &mut hash_length, + 262, + 1024 * 1024, + ); + self.processing.hash_length = hash_length as usize; + + // The writer's round-robin turn. Unbounded, one root holds the writer + // for as long as it likes and every other root's walk waits behind it; + // zero is meaningful (one quantum per turn) and stays legal. + clamp( + "[processing] writer_turn_slice_ms", + &mut self.processing.writer_turn_slice_ms, + 0, + 10_000, + ); + + warnings + } + /// Write back to the file this config was loaded from (or the default /// location), creating parent directories as needed. Raw values are /// written verbatim — relative paths in a portable config stay relative. diff --git a/crates/quicksearch-core/src/config/tests.rs b/crates/quicksearch-core/src/config/tests.rs index d3b0806..2106d19 100644 --- a/crates/quicksearch-core/src/config/tests.rs +++ b/crates/quicksearch-core/src/config/tests.rs @@ -1095,3 +1095,61 @@ fn a_tilde_database_path_still_matches_the_real_file() { assert!(c.is_index_file(&wal)); assert!(!c.is_index_file(&absolute.with_file_name("other.sqlite"))); } + +/// `display_limit = 0` makes `cascade::run` compute `remaining()` as zero and +/// stop before its first pass, so *every* search returns nothing and reports +/// itself truncated. A hand-editable file must not be able to do that. +#[test] +fn out_of_range_numbers_are_clamped_not_rejected() { + let dir = tmp_dir(); + let path = dir.join("config.toml"); + fs::write( + &path, + "[search]\ndisplay_limit=0\n\ + [processing]\nmaximum_text_file_size=0\nhash_length=8\nwriter_turn_slice_ms=18446744073709551615\n", + ) + .unwrap(); + let cfg = Config::load_from(&path).expect("a bad number must not stop the app starting"); + assert_eq!(cfg.search.display_limit, 1); + assert_eq!(cfg.processing.maximum_text_file_size, 1); + assert_eq!(cfg.processing.hash_length, 262); + assert_eq!(cfg.processing.writer_turn_slice_ms, 10_000); + fs::remove_dir_all(&dir).ok(); +} + +/// The clamp must be silent about values that are merely unusual, or the +/// warning is noise and `hash_length` — which is in `REBUILD_KEYS` — would +/// read as changed and force a rebuild on every start. +#[test] +fn in_range_numbers_are_left_exactly_alone() { + let mut cfg = Config::default(); + let before = cfg.clone(); + let warnings = cfg.clamp_out_of_range(); + assert!(warnings.is_empty(), "defaults must not warn: {warnings:?}"); + assert_eq!(cfg.search.display_limit, before.search.display_limit); + assert_eq!(cfg.processing.hash_length, before.processing.hash_length); + assert_eq!( + cfg.processing.maximum_text_file_size, + before.processing.maximum_text_file_size + ); + assert_eq!( + cfg.processing.writer_turn_slice_ms, + before.processing.writer_turn_slice_ms + ); + + // Zero is a legal turn slice — one quantum per turn, not "no turn". + cfg.processing.writer_turn_slice_ms = 0; + assert!(cfg.clamp_out_of_range().is_empty()); + assert_eq!(cfg.processing.writer_turn_slice_ms, 0); +} + +/// Each clamped field must say so, by name, so the warning is actionable. +#[test] +fn a_clamped_field_is_named_in_its_warning() { + let mut cfg = Config::default(); + cfg.search.display_limit = 0; + let warnings = cfg.clamp_out_of_range(); + assert_eq!(warnings.len(), 1, "{warnings:?}"); + assert!(warnings[0].contains("display_limit"), "{warnings:?}"); + assert!(warnings[0].contains('1'), "{warnings:?}"); +} diff --git a/crates/quicksearch-core/src/db/mod.rs b/crates/quicksearch-core/src/db/mod.rs index 1fa9a09..3fff304 100644 --- a/crates/quicksearch-core/src/db/mod.rs +++ b/crates/quicksearch-core/src/db/mod.rs @@ -18,7 +18,7 @@ pub mod schema; pub use key::{process_key_hex, set_process_key}; pub use open::{ index_needs_rebuild, key_mismatch_parts, open_existing, open_or_recreate, verify_process_key, - KeyMismatch, CURRENT_SCHEMA_VERSION, KEY_MISMATCH_PREFIX, + KeyMismatch, CURRENT_SCHEMA_VERSION, FOREIGN_DB_PREFIX, KEY_MISMATCH_PREFIX, }; /// Bumped whenever the index file is replaced rather than modified — a diff --git a/crates/quicksearch-core/src/db/open.rs b/crates/quicksearch-core/src/db/open.rs index a4b81d5..d3e391e 100644 --- a/crates/quicksearch-core/src/db/open.rs +++ b/crates/quicksearch-core/src/db/open.rs @@ -336,17 +336,92 @@ fn key_mismatch_message(db_path: &str, had_key: bool) -> String { /// True iff the DB has a `schema_info` table whose `version` equals /// [`CURRENT_SCHEMA_VERSION`]. Ignores the tokenizer — that's only the /// owner's concern. -fn schema_version_current(conn: &Connection) -> Result { - let has_info: bool = conn - .query_row( - "SELECT 1 FROM sqlite_master WHERE type='table' AND name='schema_info'", - [], - |_| Ok(true), +/// Prefix tagging the "this file is not a QuickSearch index" refusal, so a +/// caller can tell it from the schema drift that legitimately rebuilds. +pub const FOREIGN_DB_PREFIX: &str = "FOREIGN_DB: "; + +/// Tables left behind by the pre-`schema_info` layout, which is the only kind +/// of index of ours that [`has_our_schema_info`] cannot recognise. +/// +/// `files` is the only one guaranteed present across those layouts, and it is +/// the loose end here: another application's database with a table called +/// `files` would still be taken for an ancient index of ours and wiped. +/// Refusing a genuine legacy index is the worse failure of the two, so it +/// stays — narrowed by the fact that anything with a `schema_info` of our +/// shape is already decided before this list is consulted. +const LEGACY_TABLES: &[&str] = &["files", "files_fts", "documents_text", "failed_files"]; + +/// Whether `schema_info` exists *and* is shaped like ours. +/// +/// The shape, not the contents: preparing the statement succeeds only if the +/// table has both columns, and an index whose creation was interrupted before +/// the version row landed is still ours. A foreign database that happens to +/// use the name for something else is not. +fn has_our_schema_info(conn: &Connection) -> bool { + conn.prepare("SELECT key, value FROM schema_info").is_ok() +} + +/// Whether the file is one of ours, or empty enough to become one. +/// +/// `sqlite_master` is empty for a file SQLite has just created and for a +/// zero-length one, which is the "ours to create" case. Internal `sqlite_%` +/// names are excluded so an autoindex or a stat table cannot make an +/// otherwise-empty file look occupied. +fn is_ours_or_empty(conn: &Connection) -> Result { + if has_our_schema_info(conn) { + return Ok(true); + } + let mut stmt = conn + .prepare("SELECT name FROM sqlite_master WHERE name NOT LIKE 'sqlite_%'") + .map_err(|e| format!("read sqlite_master: {}", e))?; + let mut any = false; + let names = stmt + .query_map([], |r| r.get::<_, String>(0)) + .map_err(|e| format!("read sqlite_master: {}", e))?; + for name in names { + let name = name.map_err(|e| format!("read sqlite_master: {}", e))?; + any = true; + if LEGACY_TABLES.contains(&name.as_str()) { + return Ok(true); + } + } + Ok(!any) +} + +/// The refusal message, naming a few of the tables that are in the way so the +/// user can recognise whose file they pointed at. +fn foreign_database_message(conn: &Connection) -> Result { + let mut stmt = conn + .prepare( + "SELECT name FROM sqlite_master \ + WHERE type = 'table' AND name NOT LIKE 'sqlite_%' \ + ORDER BY name LIMIT 4", ) - .optional() - .map_err(|e| format!("sqlite_master schema_info: {}", e))? - .unwrap_or(false); - if !has_info { + .map_err(|e| format!("read sqlite_master: {}", e))?; + let names: Vec = stmt + .query_map([], |r| r.get::<_, String>(0)) + .map_err(|e| format!("read sqlite_master: {}", e))? + .filter_map(Result::ok) + .collect(); + Ok(format!( + "{}the file is a SQLite database, but not a QuickSearch index \ + (it holds {}). Refusing to replace it — point [paths] database_path \ + somewhere else, or move that file away first.", + FOREIGN_DB_PREFIX, + if names.is_empty() { + "tables this program does not recognise".to_string() + } else { + names.join(", ") + } + )) +} + +fn schema_version_current(conn: &Connection) -> Result { + // The shape check rather than a name lookup: a table called `schema_info` + // with other columns belongs to some other program, and reading `value` + // out of it would fail the open with a SQL error instead of the refusal + // the caller can act on. + if !has_our_schema_info(conn) { return Ok(false); } @@ -365,6 +440,17 @@ fn schema_version_current(conn: &Connection) -> Result { /// effective-tokenizer string this caller asked for. fn db_matches_current(conn: &Connection, tokenizer: &str) -> Result { if !schema_version_current(conn)? { + // Refuse rather than wipe unless the file is recognisably ours. The + // wipe policy is about replacing an index this program wrote under an + // older layout, and `database_path` is a free-text field with no + // picker and no confirmation — a typo naming some other + // application's SQLite file would otherwise delete it, and its `-wal` + // and `-shm` with it, on the next indexing run. An older layout of + // ours still wipes, and so does a file with no tables at all, which + // is ours to create. + if !is_ours_or_empty(conn)? { + return Err(foreign_database_message(conn)?); + } return Ok(false); } diff --git a/crates/quicksearch-core/src/db/open_tests.rs b/crates/quicksearch-core/src/db/open_tests.rs index 6e11a67..4ca5ce1 100644 --- a/crates/quicksearch-core/src/db/open_tests.rs +++ b/crates/quicksearch-core/src/db/open_tests.rs @@ -642,3 +642,123 @@ fn maintain_reads_its_pragmas_on_a_keyed_index() { drop(conn); std::fs::remove_file(&p).ok(); } + +/// `database_path` is a free-text field in Settings with no picker and no +/// confirmation. A typo naming another application's database used to delete +/// it — and its `-wal` and `-shm` — on the next indexing run, because "no +/// `schema_info` table" was read as "an old index of ours". +#[test] +fn a_foreign_database_is_refused_not_wiped() { + let p = tmp_db_path(); + { + let conn = Connection::open(&p).unwrap(); + conn.execute( + "CREATE TABLE moz_places (id INTEGER PRIMARY KEY, url TEXT)", + [], + ) + .unwrap(); + conn.execute( + "INSERT INTO moz_places(url) VALUES('https://example.invalid/')", + [], + ) + .unwrap(); + } + let err = open_or_recreate(p.to_str().unwrap(), "trigram").unwrap_err(); + assert!(err.starts_with(FOREIGN_DB_PREFIX), "got: {err}"); + assert!( + err.contains("moz_places"), + "the message must name what is in the way: {err}" + ); + + // The row is still there — the point of the whole exercise. + let conn = Connection::open(&p).unwrap(); + let url: String = conn + .query_row("SELECT url FROM moz_places", [], |r| r.get(0)) + .expect("the foreign database must survive intact"); + assert_eq!(url, "https://example.invalid/"); + drop(conn); + std::fs::remove_file(&p).ok(); +} + +/// The refusal must not extend to a file that is genuinely ours to create: +/// an empty database is what SQLite leaves behind for a path nothing has +/// written yet. +#[test] +fn an_empty_database_file_is_still_ours_to_build() { + let p = tmp_db_path(); + // An empty but real SQLite file, header and all. + drop(Connection::open(&p).unwrap()); + let conn = open_or_recreate(p.to_str().unwrap(), "trigram").unwrap(); + let v: String = conn + .query_row( + "SELECT value FROM schema_info WHERE key='version'", + [], + |r| r.get(0), + ) + .unwrap(); + assert_eq!(v, CURRENT_SCHEMA_VERSION.to_string()); + drop(conn); + std::fs::remove_file(&p).ok(); +} + +/// Each pre-`schema_info` table name marks a file as ours, and so is wiped +/// rather than refused — the legacy-layout policy depends on exactly that. +#[test] +fn a_legacy_table_marks_a_file_as_ours() { + for table in LEGACY_TABLES { + let p = tmp_db_path(); + { + let conn = Connection::open(&p).unwrap(); + conn.execute(&format!("CREATE TABLE {} (x INTEGER)", table), []) + .unwrap(); + } + let conn = open_or_recreate(p.to_str().unwrap(), "trigram") + .unwrap_or_else(|e| panic!("{table} should read as ours, got: {e}")); + drop(conn); + std::fs::remove_file(&p).ok(); + } +} + +/// A `schema_info` with our columns but no version row is an index whose +/// creation was interrupted. It is ours, and rebuilding it is right. +#[test] +fn a_schema_info_without_a_version_row_is_still_ours() { + let p = tmp_db_path(); + { + let conn = Connection::open(&p).unwrap(); + conn.execute( + "CREATE TABLE schema_info (key TEXT PRIMARY KEY, value TEXT NOT NULL)", + [], + ) + .unwrap(); + } + let conn = open_or_recreate(p.to_str().unwrap(), "trigram").expect("half-built index is ours"); + drop(conn); + std::fs::remove_file(&p).ok(); +} + +/// A table that merely *shares the name* `schema_info` is not ours. Matching +/// on the name alone used to fail the open with a raw SQL error about a +/// missing column, which is neither a refusal the caller can act on nor a +/// message anyone could act on either. +#[test] +fn a_foreign_schema_info_is_refused() { + let p = tmp_db_path(); + { + let conn = Connection::open(&p).unwrap(); + conn.execute("CREATE TABLE schema_info (revision INTEGER)", []) + .unwrap(); + conn.execute("INSERT INTO schema_info(revision) VALUES(3)", []) + .unwrap(); + } + let err = open_or_recreate(p.to_str().unwrap(), "trigram").unwrap_err(); + assert!(err.starts_with(FOREIGN_DB_PREFIX), "got: {err}"); + + let conn = Connection::open(&p).unwrap(); + let revision: i64 = conn + .query_row("SELECT revision FROM schema_info", [], |r| r.get(0)) + .expect("the foreign database must survive intact"); + assert_eq!(revision, 3); + drop(conn); + std::fs::remove_file(&p).ok(); +} diff --git a/crates/quicksearch-core/src/db/repo.rs b/crates/quicksearch-core/src/db/repo.rs index fc766fe..41e5c3e 100644 --- a/crates/quicksearch-core/src/db/repo.rs +++ b/crates/quicksearch-core/src/db/repo.rs @@ -184,7 +184,38 @@ pub fn set_content_done( text_zstd: Option<&[u8]>, ) -> Result<(), String> { remove_content_for_id(tx, file_id)?; + set_content_done_fresh(tx, file_id, text, text_zstd) +} +/// [`set_content_done`] for a row that **provably holds no content yet**, +/// skipping the pre-delete. +/// +/// The two statements `remove_content_for_id` issues are not free: one is a +/// tombstoning delete on a contentless FTS5 table, and both run inside the +/// writer's transaction with the shared connection held. For a row that cannot +/// have content they are pure overhead, and the indexer hit them on nearly +/// every file it wrote: +/// +/// * a row `insert_file` has just created has no `searchabletext` or +/// `documents_text` row by construction; +/// * a row [`update_file_basic`] has just written has had its content removed +/// **by that call**, so `set_content_done` was deleting it a second time. +/// +/// Both paths run for every file small enough for the walk to extract inline +/// (`hash_length`, 8 KiB by default), which on a source tree is most of it. +/// +/// Use [`set_content_done`] wherever the row's prior state is not known — the +/// content pass writing a row that may have been extracted before, the watcher, +/// anything reached from a config reconcile. Getting this wrong leaves a +/// duplicate FTS entry rather than a visible error, so the rule is: skip the +/// delete only where the *same transaction* has already established there is +/// nothing there. +pub fn set_content_done_fresh( + tx: &Transaction<'_>, + file_id: i64, + text: &str, + text_zstd: Option<&[u8]>, +) -> Result<(), String> { // Contentless FTS5 still accepts values on INSERT — the tokenizer needs // them — it simply doesn't persist the raw column values. exec( @@ -265,7 +296,15 @@ impl DocDecoder { // settles at the largest document in the scan within the first few // rows, after which decoding a row allocates nothing at all. if let Ok(Some(size)) = zstd::zstd_safe::get_frame_content_size(blob) { - self.buf.reserve(usize::try_from(size).ok()?); + // Clamped: `size` is a `u64` read straight out of the frame + // header, so a corrupt or hostile blob can ask for terabytes here + // and `reserve` answers an impossible request by aborting the + // process, not by failing. The doubling loop below already treats + // `MAX_DOC_CAPACITY` as the point past which a frame is corrupt + // rather than merely large, so a clamped reservation that then + // fails to decompress returns `None` through the same path. + self.buf + .reserve(usize::try_from(size).ok()?.min(MAX_DOC_CAPACITY)); } loop { if self.buf.capacity() == 0 { @@ -949,11 +988,52 @@ pub fn maintain(conn: &Connection, db_dir: &str) -> Result { // matter, so it is close to free on a run that changed little. conn.execute_batch("PRAGMA optimize;") .map_err(|e| format!("optimize: {}", e))?; + note_optimized(db_dir); checkpoint_truncate(conn)?; Ok(vacuumed) } +/// How many times `PRAGMA optimize` has been accepted by SQLite, per index +/// directory. +/// +/// Keyed by directory rather than counted globally because the test binaries +/// run their `#[test]` functions on concurrent threads against separate scratch +/// indexes; a single counter would let one test's maintenance satisfy another +/// test's assertion. Bounded by the number of distinct indexes a process opens, +/// which outside the tests is one. +static OPTIMIZED: std::sync::LazyLock>> = + std::sync::LazyLock::new(|| std::sync::Mutex::new(std::collections::HashMap::new())); + +/// Record that the pragma above returned `Ok` for `db_dir`. +fn note_optimized(db_dir: &str) { + *crate::lock_ok(&OPTIMIZED) + .entry(db_dir.to_string()) + .or_insert(0) += 1; +} + +/// How many times the index in `db_dir` has had `PRAGMA optimize` run against +/// it in this process. +/// +/// Exists so a test can ask *whether the optimize pass happened* rather than +/// trying to catch [`crate::indexing::IndexingStatus::Optimizing`] as it goes +/// past. That distinction is the whole point: the status is a sample of a +/// transient state, and the faster the pass gets the less often a poller sees +/// it — so a test written that way fails more as the code improves, which is +/// exactly backwards. This is a latch, so it cannot be missed however quickly +/// the pass runs. +/// +/// It records that the statement was handed to SQLite and accepted, not what +/// SQLite then chose to do with it — `PRAGMA optimize` is deliberately a no-op +/// when no table has drifted far enough to be worth re-analysing, so there is +/// no observable side effect to assert on instead. +pub fn optimize_count(db_dir: &str) -> u64 { + crate::lock_ok(&OPTIMIZED) + .get(db_dir) + .copied() + .unwrap_or(0) +} + /// Read the `last_full_index` marker (unix seconds of the last *successful* /// full indexing run) from `schema_info`. Absent key — fresh DB, or a DB /// from before this marker existed — means "never". diff --git a/crates/quicksearch-core/src/db/repo_tests.rs b/crates/quicksearch-core/src/db/repo_tests.rs index 65c62c6..4682584 100644 --- a/crates/quicksearch-core/src/db/repo_tests.rs +++ b/crates/quicksearch-core/src/db/repo_tests.rs @@ -9,6 +9,77 @@ fn tmp_path() -> std::path::PathBuf { crate::testutil::scratch_dir("repo").join("index.sqlite") } +/// `set_content_done_fresh` skips the pre-delete, so the whole of its safety is +/// the caller's claim that the row is clean. This pins both halves of that: +/// the fast path leaves exactly one FTS row where it is used correctly, and the +/// ordinary entry point still repairs a row that *does* carry content. +/// +/// A duplicate `searchabletext` row is the failure this guards. It surfaces as +/// a file appearing twice in full-text results, not as an error, so nothing +/// else in the suite would necessarily notice. +#[test] +fn the_fresh_content_write_leaves_exactly_one_fts_row() { + fn new_file(name: &str, mtime: u64) -> NewFile<'_> { + NewFile { + name, + parent: "/d/", + size: 10, + mtime, + mime: Some("text/plain"), + ftype: crate::mime::FileType::TEXT, + hash: None, + needs_content: true, + } + } + fn count(conn: &rusqlite::Connection, sql: &str) -> i64 { + conn.query_row(sql, [], |r| r.get(0)).unwrap() + } + fn matches(conn: &rusqlite::Connection, term: &str) -> i64 { + conn.query_row( + "SELECT COUNT(*) FROM searchabletext WHERE searchabletext MATCH ?1", + [term], + |r| r.get(0), + ) + .unwrap() + } + + let path = tmp_path(); + let mut conn = open_or_recreate(path.to_str().unwrap(), "trigram").unwrap(); + + let tx = conn.transaction().unwrap(); + // The insert path: a row that has never had content. + let id = insert_file(&tx, &new_file("a.txt", 1)).unwrap().unwrap(); + set_content_done_fresh(&tx, id, "sphinx quartz", zstd_of("sphinx quartz").as_deref()).unwrap(); + + // The update path: `update_file_basic` clears the content, so the fresh + // write that follows is writing into an empty slot — the exact sequence + // `process_batch_updates` performs. + let same = update_file_basic(&tx, &new_file("a.txt", 2)).unwrap().unwrap(); + assert_eq!(same, id, "the same row"); + set_content_done_fresh(&tx, id, "sphinx onyx", zstd_of("sphinx onyx").as_deref()).unwrap(); + tx.commit().unwrap(); + + assert_eq!(count(&conn, "SELECT COUNT(*) FROM searchabletext"), 1); + assert_eq!(count(&conn, "SELECT COUNT(*) FROM documents_text"), 1); + assert_eq!(matches(&conn, "onyx"), 1, "the new body is searchable"); + assert_eq!(matches(&conn, "quartz"), 0, "the old body is gone"); + + // And the idempotent entry point still repairs a row that really does hold + // content — writing over the top of a DONE row with no update first, which + // is what the content pass and the watcher do. + let tx = conn.transaction().unwrap(); + set_content_done(&tx, id, "sphinx jasper", zstd_of("sphinx jasper").as_deref()).unwrap(); + tx.commit().unwrap(); + + assert_eq!(count(&conn, "SELECT COUNT(*) FROM searchabletext"), 1); + assert_eq!(count(&conn, "SELECT COUNT(*) FROM documents_text"), 1); + assert_eq!(matches(&conn, "jasper"), 1); + assert_eq!(matches(&conn, "onyx"), 0); + + drop(conn); + std::fs::remove_file(&path).ok(); +} + /// The size report reads each body's uncompressed length out of its zstd /// frame header instead of from a stored column, which works only because /// [`DocEncoder`] compresses through `ZSTD_compress2` — the API that is diff --git a/crates/quicksearch-core/src/db/schema.rs b/crates/quicksearch-core/src/db/schema.rs index 4fdbb0d..2c2e39d 100644 --- a/crates/quicksearch-core/src/db/schema.rs +++ b/crates/quicksearch-core/src/db/schema.rs @@ -203,7 +203,12 @@ CREATE TABLE files ( -- occupies — rather than restoring the covering one. CREATE UNIQUE INDEX idx_files_parent ON files(parent, name); CREATE INDEX idx_files_mtime ON files(mtime); -CREATE INDEX idx_files_type ON files(type); +-- No index on `type`. The only query that touches it is the kind filter's +-- `(f.type & ?) != 0` (`crate::query::translator`), and a bitmask test on the +-- left of the operator is not sargable, so SQLite scans regardless — nothing +-- can seek such an index and nothing orders or groups by the column. Carrying +-- one measured ~10% on inserts and 805 pages at 300k rows, and those pages +-- compete with the ones search wants resident. CREATE INDEX idx_files_mime ON files(mime); CREATE INDEX idx_files_hash ON files(hash); CREATE INDEX idx_files_content_pending ON files(id) WHERE content_state = 0; diff --git a/crates/quicksearch-core/src/extract/office.rs b/crates/quicksearch-core/src/extract/office.rs index 250620a..d4cc35b 100644 --- a/crates/quicksearch-core/src/extract/office.rs +++ b/crates/quicksearch-core/src/extract/office.rs @@ -116,9 +116,13 @@ fn entity_text(raw: &str) -> Option { /// Append the text `spec` selects out of `xml` to `out`. /// -/// `in_text` is a flag rather than a depth count, which means a closing -/// `` ends the run even though its enclosing `` is still -/// open. +/// Text-bearing elements are counted, not flagged. ODF nests them — a +/// `` inside a `` — and a flag made the span's own close +/// end the run, dropping every character between it and the paragraph's +/// close. Counting also gives the separator somewhere honest to go: it +/// belongs after a *run*, and since quick-xml 0.41 a run arrives as several +/// events, so emitting one per event put a space in the middle of every cell +/// containing an entity. fn collect_xml_text(xml: &str, spec: &TextSpec, out: &mut String) -> Result<(), Box> { let mut reader = Reader::from_str(xml); // Deliberately no `trim_text`: it trims each *event*, and since 0.41 an @@ -129,24 +133,23 @@ fn collect_xml_text(xml: &str, spec: &TextSpec, out: &mut String) -> Result<(), // flag is false and is ignored there, and whitespace *inside* a // text-bearing element is content. let mut buf = Vec::new(); - let mut in_text = false; + // How many text-bearing elements are open. The run ends when it returns + // to zero, not when the innermost one closes. + let mut depth = 0usize; loop { match reader.read_event_into(&mut buf) { Ok(Event::Start(ref e)) => { if spec.text.contains(&e.name().as_ref()) { - in_text = true; + depth += 1; } } - Ok(Event::Text(e)) if in_text => { + Ok(Event::Text(e)) if depth > 0 => { out.push_str(&e.decode()?); - if let Some(sep) = spec.separator { - out.push(sep); - } } // An entity reference is its own event in 0.41; without this arm // every `&` in a document would vanish from the index. - Ok(Event::GeneralRef(e)) if in_text => { + Ok(Event::GeneralRef(e)) if depth > 0 => { let raw = e.decode()?; // An entity nothing can expand is an error, as it was when // `unescape` resolved these inline: dropping it would take @@ -159,7 +162,28 @@ fn collect_xml_text(xml: &str, spec: &TextSpec, out: &mut String) -> Result<(), Ok(Event::End(ref e)) => { let name = e.name(); if spec.text.contains(&name.as_ref()) { - in_text = false; + depth = depth.saturating_sub(1); + // Closing the outermost one closes the run. + if depth == 0 { + if let Some(sep) = spec.separator { + out.push(sep); + } + } + } + if spec.breaks.contains(&name.as_ref()) { + out.push('\n'); + } + } + // A self-closed element gets no `Start` and no `End` of its own, + // so `` — ODF's blank line — would otherwise lose both + // its separator and its paragraph break. It carries no text, so + // the run it opens is empty and closes immediately. + Ok(Event::Empty(ref e)) => { + let name = e.name(); + if depth == 0 && spec.text.contains(&name.as_ref()) { + if let Some(sep) = spec.separator { + out.push(sep); + } } if spec.breaks.contains(&name.as_ref()) { out.push('\n'); @@ -303,6 +327,16 @@ fn shared_strings(archive: &mut ZipArchive) -> Vec { in_text = true; current.clear(); } + // `` — an empty cell. quick-xml reports a self-closed element + // as its own event with no `Start` and no `End`, so without this + // arm the entry is never pushed and **every later index is off by + // one**: `collect_sheet` then renders a real string for the wrong + // cell, with nothing anywhere reporting a problem. LibreOffice, + // openpyxl and POI all write `` for a blank, so this + // is ordinary output rather than a crafted file. + Ok(Event::Empty(ref e)) if e.name().as_ref() == b"t" => { + strings.push(String::new()); + } Ok(Event::Text(e)) if in_text => match e.decode() { Ok(s) => current.push_str(&s), Err(_) => return strings, @@ -643,6 +677,15 @@ mod tests { const XLSX_SHARED: &str = "SharedSecond"; + /// The first entry is `` — a blank cell, which every + /// spreadsheet writer emits. It still occupies index 0. + const XLSX_SHARED_WITH_BLANK: &str = "Second"; + + /// One cell, referring to shared string index 1. + const XLSX_SHEET_INDEX_1: &str = "\ + 1\ + "; + const XLSX_SHEET: &str = "\ 042\ 1\ @@ -815,4 +858,83 @@ mod tests { crate::testutil::touch(&p, b"this is not a zip archive"); assert!(extract_document_text(&p, "docx").is_err()); } + + /// A self-closed `` is a whole shared-string entry. Skip it and every + /// later index slides by one, so the sheet renders a real string for the + /// wrong cell — clean extraction, no error, wrong content. This is the + /// regression that made the batch worth doing. + #[test] + fn a_blank_shared_string_still_occupies_its_index() { + let p = container( + "xlsx-blank-si", + "xlsx", + &[ + ("xl/sharedStrings.xml", XLSX_SHARED_WITH_BLANK), + ("xl/worksheets/sheet1.xml", XLSX_SHEET_INDEX_1), + ], + ); + assert_eq!( + extract_document_text(&p, "xlsx").unwrap(), + "Second \n", + "index 1 must still be the second entry" + ); + } + + /// The same shape one level up: a `` holding nothing at all. + #[test] + fn an_empty_si_still_occupies_its_index() { + let p = container( + "xlsx-empty-si", + "xlsx", + &[ + ( + "xl/sharedStrings.xml", + "Second", + ), + ("xl/worksheets/sheet1.xml", XLSX_SHEET_INDEX_1), + ], + ); + assert_eq!(extract_document_text(&p, "xlsx").unwrap(), "Second \n"); + } + + /// An entity splits its run into three events. The separator belongs to + /// the run, so the cell must read `A&B` — not `A &B`, and not `A & B`. + #[test] + fn an_entity_does_not_split_an_ods_cell() { + let body = "\ + \ + A&B\ + \ + "; + let p = container("ods-entity", "ods", &[("content.xml", body)]); + assert_eq!(extract_document_text(&p, "ods").unwrap(), "A&B \n"); + } + + /// A span closing inside a paragraph ends the span, not the paragraph: + /// the text after it is body text and must be indexed. + #[test] + fn text_after_a_nested_span_is_not_dropped() { + let body = "\ + beforeinsideafter\ + "; + let p = container("odt-span-tail", "odt", &[("content.xml", body)]); + assert_eq!( + extract_document_text(&p, "odt").unwrap(), + "beforeinsideafter\n" + ); + } + + /// ODF writes a blank line as a self-closed ``, which has no + /// `End` to hang the paragraph break on. + #[test] + fn a_self_closed_paragraph_still_breaks_the_line() { + let body = "\ + firstthird\ + "; + let p = container("odt-empty-p", "odt", &[("content.xml", body)]); + assert_eq!( + extract_document_text(&p, "odt").unwrap(), + "first\n\nthird\n" + ); + } } diff --git a/crates/quicksearch-core/src/extract/ole.rs b/crates/quicksearch-core/src/extract/ole.rs index f26d22b..f1fbe54 100644 --- a/crates/quicksearch-core/src/extract/ole.rs +++ b/crates/quicksearch-core/src/extract/ole.rs @@ -172,9 +172,31 @@ mod doc { .ok_or("CLX runs past the end of the table stream")?; let pieces = piece_table(clx)?; + let out = decode_pieces(&doc, &pieces, MAX_TEXT_BYTES); + if out.trim().is_empty() { + return Err("no text found in the piece table".into()); + } + Ok(out) + } + + /// Decode `pieces` out of the document stream, stopping at `budget`. + /// + /// Two budgets, because the output one cannot bound the input. `clean` + /// drops the whole C0 range, so a piece of control bytes decodes at full + /// width and appends nothing — leaving a brake on `out.len()` that never + /// advances. And nothing requires pieces to be disjoint or ordered: each + /// names its own `fc`, so a table can point every piece at the same span, + /// and a 2 MiB file can name tens of GiB of decoding. Charging the bytes + /// actually read bounds both the repetition and the merely enormous + /// document. + /// + /// `budget` is a parameter so a test can trip it without building a file + /// the size of the real one. + pub(super) fn decode_pieces(doc: &[u8], pieces: &[Piece], budget: usize) -> String { let mut out = String::new(); + let mut decoded = 0usize; for piece in pieces { - if out.len() >= MAX_TEXT_BYTES { + if out.len() >= budget || decoded >= budget { break; } let Some(bytes) = doc.get(piece.start..piece.end) else { @@ -183,6 +205,7 @@ mod doc { // a recoverable document. break; }; + decoded = decoded.saturating_add(bytes.len()); let text = if piece.compressed { cp1252(bytes) } else { @@ -190,10 +213,7 @@ mod doc { }; clean(&text, &mut out); } - if out.trim().is_empty() { - return Err("no text found in the piece table".into()); - } - Ok(out) + out } /// Walk the FIB's variable-length sections to find `fcClx`/`lcbClx`. @@ -223,10 +243,10 @@ mod doc { } /// One run of characters in the `WordDocument` stream. - struct Piece { - start: usize, - end: usize, - compressed: bool, + pub(super) struct Piece { + pub(super) start: usize, + pub(super) end: usize, + pub(super) compressed: bool, } /// Locate the `Pcdt` inside the CLX and decode its `PlcPcd`. @@ -333,14 +353,40 @@ mod xls { let book = stream(cfb, "Workbook") .or_else(|| stream(cfb, "Book")) .ok_or("no Workbook stream")?; + extract_from_book(&book, MAX_TEXT_BYTES) + } - let records = split_records(&book); + /// The workbook stream's text, stopping at `budget`. Split out from + /// [`extract`] so a test can trip the budget without building a file the + /// size of the real one. + pub(super) fn extract_from_book(book: &[u8], budget: usize) -> Result> { + let records = split_records(book); let strings = shared_strings(&records); + let out = decode_cells(&records, &strings, budget); + if out.trim().is_empty() { + return Err("workbook holds no readable cell text".into()); + } + Ok(out) + } + + /// Render every cell-bearing record, stopping at `budget`. + /// + /// The same two budgets as [`super::doc::decode_pieces`], for the same + /// reason: `clean` can consume a whole cell and emit nothing, so a + /// workbook whose shared strings are all control characters runs to the + /// end of its records with the output brake never advancing — and one + /// `LABELSST` is six bytes, so a small file holds a great many of them, + /// each free to name the same 64 KiB shared string. + /// + /// `budget` is a parameter so a test can trip it without building a file + /// the size of the real one. + fn decode_cells(records: &[Record<'_>], strings: &[String], budget: usize) -> String { let mut out = String::new(); let mut row_open = false; - for rec in &records { - if out.len() >= MAX_TEXT_BYTES { + let mut decoded = 0usize; + for rec in records { + if out.len() >= budget || decoded >= budget { break; } let cell = match rec.id { @@ -363,6 +409,7 @@ mod xls { _ => None, }; if let Some(text) = cell { + decoded = decoded.saturating_add(text.len()); clean(&text, &mut out); out.push(' '); row_open = true; @@ -371,10 +418,7 @@ mod xls { if row_open { out.push('\n'); } - if out.trim().is_empty() { - return Err("workbook holds no readable cell text".into()); - } - Ok(out) + out } struct Record<'a> { diff --git a/crates/quicksearch-core/src/extract/ole_tests.rs b/crates/quicksearch-core/src/extract/ole_tests.rs index 26ad0fb..36028f3 100644 --- a/crates/quicksearch-core/src/extract/ole_tests.rs +++ b/crates/quicksearch-core/src/extract/ole_tests.rs @@ -436,3 +436,103 @@ fn an_empty_file_is_an_error() { crate::testutil::touch(&p, b""); assert!(extract_ole_text(&p, "xls").is_err()); } + +// -- decode budgets --------------------------------------------------- + +/// Nothing in the format requires pieces to be disjoint, so a piece table may +/// point every entry at the same span: a small file that decodes gigabytes. +/// `clean` drops the whole C0 range, so a run of control bytes produces no +/// output at all and a brake on the emitted text never fires. The budget has +/// to charge what was *read*. +#[test] +fn doc_overlapping_control_pieces_stop_at_the_budget() { + // One 4 KiB span of control bytes, pointed at over and over. + const SPAN: usize = 4 * 1024; + let mut doc = vec![0x01u8; SPAN]; + let marker_at = doc.len(); + doc.extend_from_slice(b"MARKER"); + + let mut pieces: Vec = (0..64) + .map(|_| doc::Piece { + start: 0, + end: SPAN, + compressed: true, + }) + .collect(); + // Reachable only if the budget did not stop the walk first. + pieces.push(doc::Piece { + start: marker_at, + end: doc.len(), + compressed: true, + }); + + // A budget of half what those pieces decode. + let out = doc::decode_pieces(&doc, &pieces, SPAN * 32); + assert!( + !out.contains("MARKER"), + "the walk ran past its budget: {out:?}" + ); + assert!( + out.trim().is_empty(), + "control bytes must not survive `clean`: {out:?}" + ); +} + +/// The same table under a budget it fits inside must be extracted whole — +/// the brake must not fire early. +#[test] +fn doc_pieces_within_the_budget_are_all_decoded() { + const SPAN: usize = 4 * 1024; + let mut doc = vec![0x01u8; SPAN]; + let marker_at = doc.len(); + doc.extend_from_slice(b"MARKER"); + + let mut pieces: Vec = (0..4) + .map(|_| doc::Piece { + start: 0, + end: SPAN, + compressed: true, + }) + .collect(); + pieces.push(doc::Piece { + start: marker_at, + end: doc.len(), + compressed: true, + }); + + let out = doc::decode_pieces(&doc, &pieces, SPAN * 32); + assert!(out.contains("MARKER"), "stopped early: {out:?}"); +} + +/// A workbook whose cells are all control characters: every `LABELSST` is six +/// bytes of record and resolves to a shared string that `clean` erases, so the +/// emitted-text brake never advances however many of them there are. +#[test] +fn xls_control_character_cells_stop_at_the_budget() { + let control: String = std::iter::repeat('\u{1}').take(4096).collect(); + + let mut sst = Vec::new(); + sst.extend_from_slice(&le32(2)); // total + sst.extend_from_slice(&le32(2)); // unique + sst.extend_from_slice(&sst_string(&control, false)); + sst.extend_from_slice(&sst_string("MARKER", false)); + + let mut book = biff(xls::REC_SST, &sst); + for _ in 0..64 { + book.extend_from_slice(&biff(xls::REC_LABELSST, &labelsst(0))); + } + // Reachable only if the budget did not stop the scan first. + book.extend_from_slice(&biff(xls::REC_LABELSST, &labelsst(1))); + + let out = xls::extract_from_book(&book, 4096 * 32) + .unwrap_err() + .to_string(); + assert!( + out.contains("no readable cell text"), + "expected the scan to stop before the marker, got: {out}" + ); + + // Under a budget it fits inside, the same workbook reads normally. + let out = xls::extract_from_book(&book, 4096 * 1024).unwrap(); + assert!(out.contains("MARKER"), "stopped early: {out:?}"); +} diff --git a/crates/quicksearch-core/src/extract/plaintext.rs b/crates/quicksearch-core/src/extract/plaintext.rs index f3ea18c..ad7f19c 100644 --- a/crates/quicksearch-core/src/extract/plaintext.rs +++ b/crates/quicksearch-core/src/extract/plaintext.rs @@ -57,6 +57,39 @@ fn decode(bytes: Vec, path: &Path) -> Result pub struct PlaintextExtractor; +/// Ceiling on a single read, whatever the file claims. +/// +/// Not a policy about what is worth indexing — `maximum_text_file_size` is +/// that, and it is applied to the size the walk saw. This is the backstop for +/// the gap between those two moments, and for a node whose `fstat` lies. +const MAX_READ: usize = 64 * 1024 * 1024; + +/// Read `size` bytes from `f`, never more than `cap`. +/// +/// The cap is the point of the function. The gate that got this file here is +/// `maximum_text_file_size` against the size the *walk* recorded, which on a +/// large tree was minutes or hours ago; `size` is from the `fstat` just now. A +/// file that grew since — a log, a cloud placeholder that hydrated — would +/// otherwise be allocated and read in full, and the decode afterwards can take +/// three times that again. +/// +/// A short read is not an error: a file that shrank keeps its prefix. +fn read_sized(f: &mut File, size: usize, cap: usize, path: &Path) -> Result, ExtractError> { + let size = size.min(cap); + let mut buf = vec![0u8; size]; + let mut filled = 0; + while filled < size { + match f.read(&mut buf[filled..]) { + Ok(0) => break, + Ok(n) => filled += n, + Err(ref e) if e.kind() == std::io::ErrorKind::Interrupted => {} + Err(e) => return Err(format!("plaintext read {}: {}", path.display(), e)), + } + } + buf.truncate(filled); + Ok(buf) +} + impl Extractor for PlaintextExtractor { fn supports(&self, mime: &str) -> bool { mime.starts_with("text/") || EXTRA_TEXT_MIMES.contains(&mime) @@ -83,26 +116,14 @@ impl Extractor for PlaintextExtractor { // before anyway. Capped so a node that streams forever (a FIFO, a // lying filesystem) cannot allocate without bound. if size == 0 { - const MAX_UNSIZED_READ: u64 = 64 * 1024 * 1024; let mut buf = Vec::new(); - f.take(MAX_UNSIZED_READ) + f.take(MAX_READ as u64) .read_to_end(&mut buf) .map_err(|e| format!("plaintext read {}: {}", path.display(), e))?; return decode(buf, path); } - let mut buf = vec![0u8; size]; - let mut filled = 0; - while filled < size { - match f.read(&mut buf[filled..]) { - Ok(0) => break, - Ok(n) => filled += n, - Err(ref e) if e.kind() == std::io::ErrorKind::Interrupted => {} - Err(e) => return Err(format!("plaintext read {}: {}", path.display(), e)), - } - } - buf.truncate(filled); - decode(buf, path) + decode(read_sized(&mut f, size, MAX_READ, path)?, path) } fn extract_from_head( @@ -283,4 +304,38 @@ mod tests { assert!(!e.supports("application/pdf")); assert!(!e.supports("image/png")); } + + /// The cap is what stands between a file that grew since the walk sized + /// it — a log, a cloud placeholder that hydrated — and an allocation the + /// size of whatever it grew to. + #[test] + fn a_sized_read_stops_at_the_cap() { + let body = vec![b'x'; 4096]; + let p = tmp("cap", &body); + let mut f = File::open(&p).unwrap(); + let out = read_sized(&mut f, body.len(), 100, &p).unwrap(); + assert_eq!(out.len(), 100, "read past the cap"); + std::fs::remove_file(&p).ok(); + } + + /// A file that *shrank* between the `fstat` and the read keeps its prefix + /// rather than failing: the next run reclassifies it anyway. + #[test] + fn a_short_read_keeps_what_was_there() { + let p = tmp("short", b"only ten!!"); + let mut f = File::open(&p).unwrap(); + let out = read_sized(&mut f, 1_000_000, MAX_READ, &p).unwrap(); + assert_eq!(out, b"only ten!!"); + std::fs::remove_file(&p).ok(); + } + + /// Under a cap larger than the file, nothing changes. + #[test] + fn a_file_under_the_cap_is_read_whole() { + let body = vec![b'y'; 4096]; + let p = tmp("uncapped", &body); + let out = PlaintextExtractor.extract(&p).unwrap(); + assert_eq!(out.text.len(), 4096); + std::fs::remove_file(&p).ok(); + } } diff --git a/crates/quicksearch-core/src/extract/rtf.rs b/crates/quicksearch-core/src/extract/rtf.rs index 164611e..05fd543 100644 --- a/crates/quicksearch-core/src/extract/rtf.rs +++ b/crates/quicksearch-core/src/extract/rtf.rs @@ -5,13 +5,24 @@ //! plaintext extractor in [`super::Registry::default_set`], because //! plaintext claims every `text/*` and would otherwise swallow `text/rtf` //! and index the control-word noise raw. +//! +//! `rtf-parser` resolves to `vendor/rtf-parser`, a patched copy — its lexer +//! ended a control word at whitespace and nowhere else, which silently dropped +//! text from documents LibreOffice and Word produce. The `[patch.crates-io]` +//! note in the workspace manifest is where that is written up; the tests below +//! and `tests/extraction_corpus.rs` are what keep it fixed. +use std::fs::File; +use std::io::Read; use std::path::Path; use rtf_parser::document::RtfDocument; use super::{ExtractError, ExtractedContent, Extractor}; +/// Ceiling on a single read; see [`super::plaintext`], same reasoning. +const MAX_READ: usize = 64 * 1024 * 1024; + /// Parse a complete RTF file's bytes. Shared by both entry points so /// on-disk and already-in-memory extraction cannot drift apart. /// @@ -29,15 +40,28 @@ fn parse(bytes: Vec, path: &Path) -> Result pub struct RtfExtractor; +/// Read at most `cap` bytes of `path`. +/// +/// Bounded rather than `fs::read`: the size gate that admitted this file was +/// applied to what the walk recorded, and the file may have grown since. +/// `rtf-parser` also amplifies its input several-fold in heap, so an unbounded +/// read here is unbounded twice over. +fn read_capped(path: &Path, cap: u64) -> Result, ExtractError> { + let file = File::open(path).map_err(|e| format!("rtf read {}: {}", path.display(), e))?; + let mut bytes = Vec::new(); + file.take(cap) + .read_to_end(&mut bytes) + .map_err(|e| format!("rtf read {}: {}", path.display(), e))?; + Ok(bytes) +} + impl Extractor for RtfExtractor { fn supports(&self, mime: &str) -> bool { mime == "application/rtf" || mime == "text/rtf" } fn extract(&self, path: &Path) -> Result { - let bytes = - std::fs::read(path).map_err(|e| format!("rtf read {}: {}", path.display(), e))?; - parse(bytes, path) + parse(read_capped(path, MAX_READ as u64)?, path) } /// RTF has no trailer and needs no seeking, so a head that is the whole @@ -83,19 +107,29 @@ mod tests { std::fs::remove_file(&p).ok(); } - /// A `\\u` escape naming a lone UTF-16 surrogate must fail the file, not - /// the thread. + /// A `\\u` escape naming a lone UTF-16 surrogate costs one character, not + /// the document and not the thread. /// - /// `rtf-parser` reaches `String::from_utf16(..).unwrap()` with whatever - /// `\\uN` supplied, and screens nothing for the surrogate range. RTF is one - /// of the two extractors that also run at *walk* time, off - /// `extract_from_head`, where a panicking worker costs the root its entire - /// content pass and disables stale cleanup run-wide — so this is contained - /// in `decide_content` and `prepare_file_record` rather than left to the - /// parser. Both entry points are exercised here. + /// `rtf-parser` reached `String::from_utf16(..).unwrap()` with whatever + /// `\\uN` supplied and screened nothing for the surrogate range, so a + /// fifteen-byte document could panic. RTF is one of the two extractors that + /// also run at *walk* time, off `extract_from_head`, where a panicking + /// worker costs the root its entire content pass and disables stale + /// cleanup run-wide — so the panic was contained in `decide_content` and + /// `prepare_file_record`, and the file recorded as FAILED. + /// + /// `vendor/rtf-parser` decodes lossily instead (LOCAL PATCH, see + /// `Parser::flush_unicode`), which beats either outcome: the bad escape + /// becomes one `U+FFFD` and the rest of the document is indexed. Both + /// entry points are still exercised, because the containment above them + /// has to keep working for every other way a parser can panic. #[test] - fn a_lone_surrogate_escape_is_contained() { - let body = br"{\rtf1\u55296 }"; + fn a_lone_surrogate_escape_costs_one_character() { + // `\u55296` is a high surrogate with no low half to follow it. The `?` + // is its ANSI fallback, written the way a real producer writes one — + // spelled with a space delimiter instead, the `a` of `after` would be + // the fallback and would correctly be eaten. + let body = "{\\rtf1\\ansi before \\u55296?after}".as_bytes(); let p = tmp("surrogate", body); // The on-disk path, as the content pass reaches it. @@ -105,31 +139,56 @@ mod tests { &crate::extract::Registry::default_set(), &crate::config::Config::default(), ); + let text = match &outcome { + crate::file_handling::ContentOutcome::Done { text } => text.clone(), + other => panic!("a malformed escape must not fail the document: {other:?}"), + }; assert!( - matches!(outcome, crate::file_handling::ContentOutcome::Failed(_)), - "a panicking parser must record a failure, not unwind: {:?}", - outcome + text.contains("before") && text.contains("after"), + "the rest of the document must survive: {text:?}" + ); + assert!( + text.contains('\u{FFFD}'), + "the bad escape must leave a replacement character: {text:?}" ); - // And the head path, as a walk worker reaches it: through the - // registry, which is where the containment lives. The raw - // `RtfExtractor::extract_from_head` below it still panics — that is - // third-party code doing what it does, and the point is that no - // caller in this crate is exposed to it. + // And the head path, as a walk worker reaches it: through the registry, + // which is where the containment for any *other* panicking input lives. let head = crate::extract::Registry::default_set().extract_complete_head( &p, "application/rtf", body, ); - assert!( - matches!(head, Some(Err(_))), - "a panicking parser must be charged to the file, not the worker: {:?}", - head.map(|r| r.map(|c| c.text)) + assert_eq!( + head.expect("claimed").expect("parsed").text, + text, + "head and disk extraction must agree" ); std::fs::remove_file(&p).ok(); } + /// `\\par` ends a paragraph, so it has to reach the text as a line break. + /// + /// It used to emit nothing, and every paragraph boundary closed up: + /// a LibreOffice document came back as `...do eiusmod.The needle...`. + /// No text was lost, but the join invents word and sentence boundaries + /// that are not in the document — which a snippet then shows to the user, + /// and which a phrase query can match across. Fixed in + /// `vendor/rtf-parser` (LOCAL PATCH), alongside `\\line`, which always + /// did the right thing. + #[test] + fn paragraph_breaks_reach_the_text() { + let body = br"{\rtf1\ansi First paragraph.\par Second paragraph.\par}"; + let p = tmp("par", body); + let text = RtfExtractor.extract(&p).unwrap().text; + assert!( + text.contains("First paragraph.\nSecond paragraph."), + "paragraphs ran together: {text:?}" + ); + std::fs::remove_file(&p).ok(); + } + #[test] fn malformed_input_errors_and_names_the_file() { let p = tmp("broken", br"{\rtf1 truncated"); @@ -152,4 +211,30 @@ mod tests { assert!(!e.supports("text/plain")); assert!(!e.supports("application/pdf")); } + + /// `rtf-parser` amplifies its input several-fold in heap, so the read that + /// feeds it has to be bounded independently of what the walk recorded. + #[test] + fn a_read_stops_at_the_cap() { + let body = vec![b'x'; 4096]; + let p = tmp("cap", &body); + assert_eq!( + read_capped(&p, 100).unwrap().len(), + 100, + "read past the cap" + ); + assert_eq!( + read_capped(&p, MAX_READ as u64).unwrap().len(), + 4096, + "a file under the cap must be read whole" + ); + std::fs::remove_file(&p).ok(); + } + + #[test] + fn a_missing_file_is_an_error_naming_it() { + let p = crate::testutil::scratch_dir("rtf-missing").join("nope.rtf"); + let err = read_capped(&p, MAX_READ as u64).unwrap_err(); + assert!(err.contains(&p.display().to_string()), "{err}"); + } } diff --git a/crates/quicksearch-core/src/file_handling/batch.rs b/crates/quicksearch-core/src/file_handling/batch.rs index 10b8c62..bd504d5 100644 --- a/crates/quicksearch-core/src/file_handling/batch.rs +++ b/crates/quicksearch-core/src/file_handling/batch.rs @@ -126,7 +126,12 @@ pub fn process_batch_updates( if let (Some(id), Some(text)) = (id, rec.inline_text.as_deref()) { let zstd = body_or_skip!(bodies, i, rec.path()); - repo::set_content_done(&tx, id, text, zstd)?; + // `_fresh`: `update_file_basic` above cleared this row's + // content in this same transaction, and the insert fallback + // created the row outright. Either way there is nothing left + // to delete, and the ordinary entry point would issue two + // statements per row to discover that. + repo::set_content_done_fresh(&tx, id, text, zstd)?; } } @@ -176,7 +181,9 @@ pub fn process_batch_inserts( .map_err(|e| format!("Failed to insert file record: {}", e))?; if let (Some(id), Some(text)) = (id, rec.inline_text.as_deref()) { let zstd = body_or_skip!(bodies, i, rec.path()); - repo::set_content_done(&tx, id, text, zstd)?; + // `_fresh`: `insert_file` returned `Some` only by creating this + // row, so it cannot carry content from anywhere. + repo::set_content_done_fresh(&tx, id, text, zstd)?; } } @@ -303,13 +310,35 @@ pub(crate) fn max_text_file_size(config: &Config) -> i64 { /// *lowered* between runs (which does not force a rebuild), and rows left /// pending by an older build. Rows this misses would stay pending forever, so /// it runs on the writer before a root's content pass starts. +/// +/// `INDEXED BY`, for the same reason [`crate::db::repo::pending_content_page`] +/// spells its own out — and it is the sibling statement to that one, left +/// behind when the counting scan was moved off the writer. The planner takes +/// `idx_files_parent` for the range and then fetches **every table row in it** +/// to test `content_state`, which is a full scan of the root on the writer +/// thread, once per root per run, while every other root's walk waits. The +/// partial index holds only pending rows, so it answers the predicate without +/// touching anything else. +/// +/// Measured on 50,000 rows, best of five: +/// +/// | shape | planner's choice | `INDEXED BY` | +/// |---|---:|---:| +/// | re-index, 50 rows pending | 8.01 ms | **9.61 µs** | +/// | first index, all pending, two roots | 4.36 ms | **1.28 ms** | +/// +/// The second row is the case this could have lost: with everything pending the +/// partial index covers *every* root, not just this one, so it scans rows the +/// range predicate then rejects. It still wins by 3.4x, because the index is +/// narrow and id-ordered where the range path has to fetch a full row per +/// entry. There is no shape in which the planner's choice is the better one. pub fn mark_oversize_pending_na( conn: &Connection, cursor: &ExtractCursor, config: &Config, ) -> Result<(), String> { conn.execute( - "UPDATE files SET content_state = 3 \ + "UPDATE files INDEXED BY idx_files_content_pending SET content_state = 3 \ WHERE content_state = 0 AND size > ?1 AND parent >= ?2 AND parent < ?3", rusqlite::params![max_text_file_size(config), cursor.lo, cursor.hi], ) diff --git a/crates/quicksearch-core/src/file_handling/count_and_extract_tests.rs b/crates/quicksearch-core/src/file_handling/count_and_extract_tests.rs index 0bec201..5cbb633 100644 --- a/crates/quicksearch-core/src/file_handling/count_and_extract_tests.rs +++ b/crates/quicksearch-core/src/file_handling/count_and_extract_tests.rs @@ -277,3 +277,34 @@ fn extract_scope_counts_only_files_an_extractor_claims() { std::fs::remove_dir_all(&root).ok(); std::fs::remove_file(&db).ok(); } + +/// A `find` that fails writes nothing, and `wc -l` then reads EOF, prints `0` +/// and exits *successfully* — so checking only the last process in the +/// pipeline reported a tree of zero entries. That answer is indistinguishable +/// from a real empty tree, and it is what kept the non-GNU `-printf` fallback +/// from ever running: it is an `.or_else` on the error this used to swallow. +#[test] +#[cfg(unix)] +fn a_failing_find_is_an_error_not_a_count_of_zero() { + let missing = tmp("count-missing").join("no-such-tree"); + let cancel = AtomicBool::new(false); + let result = count_tree_entries_fast(missing.to_str().unwrap(), &cancel); + assert!( + result.is_err(), + "a path that does not exist counted {:?} entries", + result + ); +} + +/// An empty directory really does count zero (one entry on Unix, the root +/// `find` lists itself) — the error above must not have been bought by +/// calling every small answer a failure. +#[test] +fn an_empty_tree_still_counts() { + let root = tmp("count-empty"); + std::fs::create_dir_all(&root).unwrap(); + let cancel = AtomicBool::new(false); + let n = count_tree_entries_fast(root.to_str().unwrap(), &cancel).unwrap(); + assert_eq!(n, if cfg!(windows) { 0 } else { 1 }); + std::fs::remove_dir_all(&root).ok(); +} diff --git a/crates/quicksearch-core/src/file_handling/counting.rs b/crates/quicksearch-core/src/file_handling/counting.rs index 53d2e7e..6e61e19 100644 --- a/crates/quicksearch-core/src/file_handling/counting.rs +++ b/crates/quicksearch-core/src/file_handling/counting.rs @@ -25,6 +25,31 @@ const COUNT_POLL_MS: u64 = 50; /// `cancel`: on cancellation every process in `children` is killed and a /// recognizable error is returned. On normal exit, returns the terminal /// child's stdout. +/// Wait on every member of the pipeline and report the first failure. +/// +/// `terminal_status` is the one already collected by the caller; the rest are +/// waited on here. Returns the status of a member that failed, or `None` when +/// all of them succeeded. +#[cfg(unix)] +fn reap_all( + children: &mut [&mut std::process::Child], + terminal_status: std::process::ExitStatus, +) -> Option { + let mut failed = (!terminal_status.success()).then_some(terminal_status); + let last = children.len().saturating_sub(1); + for (i, child) in children.iter_mut().enumerate() { + if i == last { + continue; + } + if let Ok(status) = child.wait() { + if !status.success() && failed.is_none() { + failed = Some(status); + } + } + } + failed +} + #[cfg(unix)] fn wait_pipeline_cancellable( children: &mut [&mut std::process::Child], @@ -44,9 +69,6 @@ fn wait_pipeline_cancellable( }; match terminal.try_wait() { Ok(Some(status)) => { - if !status.success() { - return Err(format!("count pipeline exited with {}", status)); - } // The terminal child's output is a couple dozen bytes // (a `wc -l` figure), so reading after exit can't deadlock. let mut out = Vec::new(); @@ -55,14 +77,28 @@ fn wait_pipeline_cancellable( let mut stdout = stdout; let _ = stdout.read_to_end(&mut out); } - // Reap the rest of the pipeline. - for child in children.iter_mut() { - let _ = child.wait(); + // Every member, not just the terminal — and before deciding. + // A `find` that fails writes nothing and exits non-zero, while + // `wc -l` reads EOF, prints `0` and exits *successfully*: read + // through the terminal alone that is a tree of zero files, and + // the `-printf` fallback keyed on this returning `Err` never + // runs at all. Reaping here also covers the failure paths, + // which used to return leaving `find` a zombie for the life of + // the process. + let failed = reap_all(children, status); + if let Some(bad) = failed { + return Err(format!("count pipeline exited with {}", bad)); } return Ok(out); } Ok(None) => std::thread::sleep(std::time::Duration::from_millis(COUNT_POLL_MS)), - Err(e) => return Err(format!("count wait: {}", e)), + Err(e) => { + for child in children.iter_mut() { + let _ = child.kill(); + let _ = child.wait(); + } + return Err(format!("count wait: {}", e)); + } } } } @@ -74,7 +110,12 @@ fn count_find_pipe_wc( printf_newlines: bool, ) -> Result { let mut find_cmd = Command::new("find"); - find_cmd.arg(path); + // `--` before the path, though nothing can currently reach here with a + // leading `-`: every root goes through `resolved_indexing_paths`, which + // absolutizes it, and then `normalize_root_string`, which canonicalizes. + // It is one token, and it keeps that reasoning from being load-bearing + // for whoever changes root resolution next. + find_cmd.arg("--").arg(path); if printf_newlines { // GNU find: emit one newline per entry without formatting paths. find_cmd.arg("-printf").arg("\n"); diff --git a/crates/quicksearch-core/src/file_handling/paths.rs b/crates/quicksearch-core/src/file_handling/paths.rs index 2a5f8e3..d8ed33f 100644 --- a/crates/quicksearch-core/src/file_handling/paths.rs +++ b/crates/quicksearch-core/src/file_handling/paths.rs @@ -297,6 +297,14 @@ fn walk_entries<'a>( ) -> impl Iterator + 'a { WalkDir::new(root) .follow_links(follow_symlinks) + // walkdir defaults this to *true*, independently of `follow_links`: + // without it a root that is itself a symlink gets descended even when + // following is off. That matters more than it sounds, because + // `prepare_file_record_from_path` canonicalizes before storing, so the + // rows land under the target's real path — and if the target is + // outside every configured root, no sweep range covers them and they + // are orphans until a rebuild. + .follow_root_links(follow_symlinks) .into_iter() .filter_entry(move |e| walk_filter(e, follow_symlinks, include_hidden, ignore)) .filter_map(move |res| match res { @@ -313,6 +321,18 @@ fn walk_entries<'a>( None } }) + // A symlink is an entry in its own right when following is off, and + // `walk_filter` cannot drop it: that runs before the descent and + // passes depth 0 unconditionally, because a root is the user's own + // choice. Yielding it would index the link as a file — and + // `prepare_file_record_from_path` canonicalizes, so the row would + // land under the target's real path. Inside a root that is a + // duplicate of a row the walk reaches anyway; outside every root it + // is a row no sweep range covers, and only a rebuild removes it. + // + // No cost when following is on: walkdir resolves links then, so + // nothing reports itself as one. + .filter(move |e| follow_symlinks || !e.file_type().is_symlink()) } /// Walk `root` yielding only files, pruning hidden and ignored subtrees diff --git a/crates/quicksearch-core/src/file_handling/tests.rs b/crates/quicksearch-core/src/file_handling/tests.rs index 3c4063e..c2f5238 100644 --- a/crates/quicksearch-core/src/file_handling/tests.rs +++ b/crates/quicksearch-core/src/file_handling/tests.rs @@ -525,3 +525,118 @@ fn a_backslash_is_just_a_character_on_unix() { r"/tmp/weird\/" ); } + +/// walkdir defaults `follow_root_links` to **true**, independently of +/// `follow_links` — so a root that is itself a symlink was descended even with +/// following off. It matters more than a duplicate scan: the records are +/// stored under the canonicalized path, so a target outside every configured +/// root lands where no sweep range reaches and stays there until a rebuild. +#[test] +#[cfg(unix)] +fn a_symlinked_root_is_not_descended_when_following_is_off() { + let base = tmp_tree(); + let real = base.join("real"); + touch(&real.join("inside.txt")); + let link = base.join("link"); + std::os::unix::fs::symlink(&real, &link).unwrap(); + + let ignore = IgnoreSet::compile(&[]).unwrap(); + let names: Vec = filtered_walk( + link.to_str().unwrap(), + false, + false, + &ignore, + &UnreadableDirs::default(), + ) + .map(|e| e.file_name().to_string_lossy().into_owned()) + .collect(); + assert!( + names.is_empty(), + "a symlinked root must not be descended: {names:?}" + ); + + // With following on it is descended, as it always was. + let names: Vec = filtered_walk( + link.to_str().unwrap(), + true, + false, + &ignore, + &UnreadableDirs::default(), + ) + .map(|e| e.file_name().to_string_lossy().into_owned()) + .collect(); + assert_eq!(names, vec!["inside.txt"]); + + std::fs::remove_dir_all(&base).ok(); +} + +/// A symlink *inside* a root is the same hazard one level down: yielding it +/// as a file indexes it under the canonicalized target path. +#[test] +#[cfg(unix)] +fn a_symlink_inside_a_root_is_skipped_when_following_is_off() { + let base = tmp_tree(); + let root = base.join("root"); + touch(&root.join("real.txt")); + let outside = base.join("outside"); + touch(&outside.join("target.txt")); + std::os::unix::fs::symlink(outside.join("target.txt"), root.join("link.txt")).unwrap(); + std::os::unix::fs::symlink(&outside, root.join("linkdir")).unwrap(); + + let ignore = IgnoreSet::compile(&[]).unwrap(); + let mut names: Vec = filtered_walk( + root.to_str().unwrap(), + false, + false, + &ignore, + &UnreadableDirs::default(), + ) + .map(|e| e.file_name().to_string_lossy().into_owned()) + .collect(); + names.sort(); + assert_eq!(names, vec!["real.txt"], "only the real file may be walked"); + + // Following on: the link resolves and its target is walked through it. + let mut names: Vec = filtered_walk( + root.to_str().unwrap(), + true, + false, + &ignore, + &UnreadableDirs::default(), + ) + .map(|e| e.file_name().to_string_lossy().into_owned()) + .collect(); + names.sort(); + assert_eq!(names, vec!["link.txt", "real.txt", "target.txt"]); + + std::fs::remove_dir_all(&base).ok(); +} + +/// The same for the directory walk the watcher registers from: it must not +/// spend descriptors on a subtree the indexer will discard. +#[test] +#[cfg(unix)] +fn a_symlinked_root_yields_no_directories_when_following_is_off() { + let base = tmp_tree(); + let real = base.join("real"); + touch(&real.join("sub/inside.txt")); + let link = base.join("link"); + std::os::unix::fs::symlink(&real, &link).unwrap(); + + let ignore = IgnoreSet::compile(&[]).unwrap(); + let dirs: Vec = filtered_dirs( + link.to_str().unwrap(), + false, + false, + &ignore, + &UnreadableDirs::default(), + ) + .map(|e| e.path().display().to_string()) + .collect(); + assert!( + dirs.is_empty(), + "a symlinked root must yield no directories: {dirs:?}" + ); + + std::fs::remove_dir_all(&base).ok(); +} diff --git a/crates/quicksearch-core/src/incremental.rs b/crates/quicksearch-core/src/incremental.rs index 9478c80..716eeb7 100644 --- a/crates/quicksearch-core/src/incremental.rs +++ b/crates/quicksearch-core/src/incremental.rs @@ -102,6 +102,20 @@ fn upsert_path( { return Ok(Applied::Done); } + // Symlink-aware, and checked before the followed `metadata` below: with + // following off the walk will not descend a symlinked directory nor + // record a symlinked file, so neither may this. It is not merely + // redundant work — `prepare_file_record_from_path` canonicalizes, so a + // followed link whose target lies outside every root writes a row no + // sweep range covers, and nothing but a rebuild clears it. + if !config.indexing.follow_symlinks { + match std::fs::symlink_metadata(path) { + Ok(md) if md.file_type().is_symlink() => return Ok(Applied::Done), + // Already gone again — the pending Remove event handles it. + Err(_) => return Ok(Applied::Done), + Ok(_) => {} + } + } let Ok(meta) = std::fs::metadata(path) else { // Already gone again — the pending Remove event handles it. return Ok(Applied::Done); @@ -779,4 +793,73 @@ mod tests { let (_, _, content_state) = f.row(&canonical).unwrap(); assert_eq!(content_state, repo::STATE_NA); } + + /// `follow_symlinks = false` means the walk will not descend a symlinked + /// directory, and the live path must agree. It used to disagree twice + /// over: `metadata` follows, so the link read as a directory, and + /// `prepare_file_record_from_path` canonicalizes before storing — so a + /// target outside every root produced rows under the target's real path + /// that no sweep range covers. Nothing but a rebuild cleared them. + #[test] + #[cfg(unix)] + fn a_symlinked_directory_is_not_followed_when_following_is_off() { + let mut f = Fixture::new(); + assert!( + !f.config.indexing.follow_symlinks, + "the default this test is about" + ); + + // A tree outside every configured root, and a link to it inside one. + let outside = crate::testutil::scratch_dir("incr-outside"); + std::fs::write(outside.join("secret.txt"), "content out of scope").unwrap(); + let link = f.dir.join("link"); + std::os::unix::fs::symlink(&outside, &link).unwrap(); + + f.apply(&FsEvent::Create(link.clone())); + assert_eq!( + f.counts(), + (0, 0, 0), + "nothing under the link may be indexed" + ); + + std::fs::remove_dir_all(&outside).ok(); + } + + /// The same for a symlinked *file*: canonicalization would file it under + /// the target's path, which is outside the root that produced the event. + #[test] + #[cfg(unix)] + fn a_symlinked_file_is_not_indexed_when_following_is_off() { + let mut f = Fixture::new(); + let outside = crate::testutil::scratch_dir("incr-outside-file"); + let target = outside.join("target.txt"); + std::fs::write(&target, "content out of scope").unwrap(); + let link = f.dir.join("link.txt"); + std::os::unix::fs::symlink(&target, &link).unwrap(); + + f.apply(&FsEvent::Create(link.clone())); + assert_eq!(f.counts(), (0, 0, 0), "the link must not be indexed"); + + std::fs::remove_dir_all(&outside).ok(); + } + + /// With following on, the link is indexed — under the target's real path, + /// which is what canonicalization has always done. This is the other half + /// of the guard: it must gate on the setting, not refuse symlinks outright. + #[test] + #[cfg(unix)] + fn a_symlinked_file_is_indexed_when_following_is_on() { + let mut f = Fixture::new(); + f.config.indexing.follow_symlinks = true; + let target = f.write("target.txt", "greetings earthling"); + let link = f.dir.join("link.txt"); + std::os::unix::fs::symlink(&target, &link).unwrap(); + + f.apply(&FsEvent::Create(link.clone())); + let canonical = f.canonical(&target); + assert!( + f.row(&canonical).is_some(), + "the link should have indexed its target" + ); + } } diff --git a/crates/quicksearch-core/src/live.rs b/crates/quicksearch-core/src/live.rs index 8fa8e32..761b541 100644 --- a/crates/quicksearch-core/src/live.rs +++ b/crates/quicksearch-core/src/live.rs @@ -329,7 +329,18 @@ impl Loop { &mut self.pending, &mut self.orphan_to, ); - if !self.pending.is_empty() && self.settle_at.is_none() { + // Either queue, not just `pending`. `orphan_to` collects + // rename destinations whose source is not on screen, and + // it is drained only by `flush_settled` — so arming on + // `pending` alone means churn that touches no visible row + // pushes for the life of the arm and is never taken. That + // is a leak, and on Windows it is also a wrong answer: + // with no `RenameMode::Both` there, the pairing below + // needs `orphans.len() == 1`, so one stale entry turns + // every later rename into "gone". + if (!self.pending.is_empty() || !self.orphan_to.is_empty()) + && self.settle_at.is_none() + { self.settle_at = Some(Instant::now() + SETTLE); } } @@ -368,9 +379,10 @@ impl Loop { if q.pattern.is_wildcard() { return None; } - let folded = q.term.to_ascii_lowercase(); - let k = edit_budget(folded.len(), config.search.fuzzy_max_edits)?; - Bitap::new(folded.as_bytes(), k) + // As typed, exactly as the pass builds it: the matcher is + // case-insensitive in its own mask table. + let k = edit_budget(q.term.len(), config.search.fuzzy_max_edits)?; + Bitap::new(q.term.as_bytes(), k) }); self.config = Some(config); @@ -593,20 +605,22 @@ impl Loop { let Some(text) = crate::file_handling::outcome_body(&outcome) else { return WindowUpdate::Unchanged; }; - let folded = text.to_ascii_lowercase(); let cut = match tier { ContentTier::Exact => { // A literal term always yields a window, marked or not, // because the passes only ever call this for a body FTS // already matched. Here the body may genuinely have stopped // matching, and an unmarked window is how that reads. + // + // The fold is cut here rather than above the match, because + // only this arm needs one now — the fuzzy matcher folds in its + // own mask table. + let folded = text.to_ascii_lowercase(); crate::search::cascade::text_snippet(&query.pattern, text, &folded) .filter(|snip| !snip.ranges.is_empty()) } ContentTier::Fuzzy => match &self.fuzzy { - Some(bitap) => { - crate::search::cascade::fuzzy_snippet(bitap, text, &folded).map(|(_, s)| s) - } + Some(bitap) => crate::search::cascade::fuzzy_snippet(bitap, text).map(|(_, s)| s), // The term does not fuzz, so a fuzzy row cannot be re-judged; // leaving it is the honest reading. None => return WindowUpdate::Unchanged, diff --git a/crates/quicksearch-core/src/live_tests.rs b/crates/quicksearch-core/src/live_tests.rs index 1fdd670..8b3c0e4 100644 --- a/crates/quicksearch-core/src/live_tests.rs +++ b/crates/quicksearch-core/src/live_tests.rs @@ -739,3 +739,41 @@ fn re_arming_drops_the_previous_targets() { ); assert!(decided.is_empty(), "{decided:?}"); } + +/// `orphan_to` collects rename destinations whose source is not a displayed +/// row, and only `flush_settled` drains it — which used to run only when +/// `pending` was non-empty. Churn beside the results therefore pushed a +/// `PathBuf` that was never taken, and the stale entry then *paired* with the +/// next lone `Gone`: a deleted row reported as renamed to a file it has +/// nothing to do with, and the GUI following that path. +/// +/// A file moved in from outside is the reliable way to leave a lone orphan on +/// every platform — there is no `From` half to pair it with, so no +/// `RenameMode::Both` follows. +#[test] +fn e2e_an_unpaired_move_in_does_not_capture_a_later_deletion() { + let dir = scratch_dir("live-orphan-drain"); + let (watcher, rx, path) = watch_one(&dir, "before.txt"); + + // Move a file in from a directory nothing is watching: the watcher sees + // the destination and never a source. + let elsewhere = scratch_dir("live-orphan-source"); + let outside = elsewhere.join("moved-in.txt"); + std::fs::write(&outside, "unrelated").unwrap(); + std::fs::rename(&outside, dir.join("moved-in.txt")).unwrap(); + + // Past the settle window, so the drain has had its chance. + std::thread::sleep(Duration::from_millis(600)); + + // Now delete the row that *is* on screen. + std::fs::remove_file(&path).unwrap(); + + let updates = collect(&rx, 1, Duration::from_secs(5)); + stop_and_clean(watcher, &dir); + std::fs::remove_dir_all(&elsewhere).ok(); + + match updates.first() { + Some(LiveUpdate::Gone { path: gone, .. }) => assert_eq!(gone, &path), + other => panic!("a deletion must not pair with unrelated churn: {other:?}"), + } +} diff --git a/crates/quicksearch-core/src/query/pattern.rs b/crates/quicksearch-core/src/query/pattern.rs index 31e3472..396f47f 100644 --- a/crates/quicksearch-core/src/query/pattern.rs +++ b/crates/quicksearch-core/src/query/pattern.rs @@ -174,6 +174,19 @@ impl TermPattern { } } + /// [`literal`](Self::literal), ASCII-folded — the form every + /// case-insensitive scan actually searches with. + /// + /// Handing this out rather than folding at the call site matters because + /// the full-text pass calls it once per candidate row: the pattern built + /// this string once, when the query was parsed. + pub fn literal_folded(&self) -> Option<&str> { + match self { + TermPattern::Literal(l) => Some(&l.folded), + _ => None, + } + } + /// Literal chunks between wildcards (the whole term when literal). pub fn segments(&self) -> &[String] { match self { @@ -289,8 +302,12 @@ impl TermPattern { } } - /// Non-overlapping occurrence count, capped at 1000 (the cascade's - /// `count_frac` saturates there anyway). + /// Non-overlapping occurrence count. + /// + /// Wildcards stop at 1000 — the cascade's `count_frac` saturates there + /// anyway, and each regex match costs far more than a `memmem` hit. + /// Literals are counted in full, because stopping early would cost a + /// branch on the one path that runs over every candidate body. pub fn count(&self, text: &str, case_insensitive: bool) -> usize { match self { TermPattern::Empty => 0, @@ -314,6 +331,84 @@ impl TermPattern { pub struct RegexQuery { pub source: String, re: Regex, + /// Literals of which at least one must occur in anything this matches, when + /// the pattern admits such a set. See [`RegexQuery::required`]. + required: Option, +} + +/// Extract a set of literals at least one of which occurs in every match. +/// +/// This is the same analysis the regex engine performs to build its own +/// prefilter, run for the same reason a level up: the `regex:` passes scan every +/// name, every path and every stored document, and a required literal lets +/// SQLite and the trigram index reject most of those rows first. +/// +/// # What makes it sound +/// +/// A *prefix* set has the property that every match begins with one of its +/// literals; a *suffix* set, that every match ends with one. Either way the +/// matched text — itself a substring of the field being searched — contains that +/// literal, so the field does. When the set is unbounded (`\d+`, `.*foo` by +/// prefix) `literals()` answers `None` and there is nothing to filter on. +/// +/// Both kinds are tried because they fail on opposite patterns: `foo.*` has a +/// usable prefix and no usable suffix, `.*foo` the reverse. The more selective +/// of the two wins, measured by the shortest literal each would force a scan to +/// match — the weakest link in an OR. +/// +/// # Why it parses case-sensitively +/// +/// The query itself is case-insensitive, and extracting from a case-insensitive +/// pattern expands combinatorially — `(?i)FOO` comes back as eight literals, and +/// a longer word simply exceeds the extractor's budget and yields nothing. +/// Parsing without the flag gives one clean literal instead. +/// +/// That is still sound. A case-insensitive match of `foo` against text `FOO` +/// means the text holds *some* case variant of the literal, and both consumers +/// fold: the trigram index lowercases what it indexes, and `LIKE` is +/// ASCII-case-insensitive by SQLite's default collation. An inline `(?i)` inside +/// the pattern is honoured by the parser regardless, so it explodes and yields +/// `None` — a lost optimisation, never a lost row. +fn required_literals(source: &str) -> Option { + use regex_syntax::hir::literal::{ExtractKind, Extractor}; + + let hir = regex_syntax::ParserBuilder::new() + .case_insensitive(false) + .build() + .parse(source) + .ok()?; + + let mut best: Option<(usize, crate::search::prefilter::Required)> = None; + for kind in [ExtractKind::Prefix, ExtractKind::Suffix] { + let seq = Extractor::new().kind(kind).extract(&hir); + let Some(literals) = seq.literals() else { + continue; // unbounded: no constraint to be had from this direction + }; + // A literal is bytes, and the extractor can split a multi-byte character + // across the boundary of what it kept. Anything that is not valid UTF-8 + // cannot be handed to FTS5 or bound as SQL text, so the whole direction + // is abandoned rather than filtered — dropping one literal from an OR + // would drop the rows only it covers. + let strings: Option> = literals + .iter() + .map(|l| std::str::from_utf8(l.as_bytes()).ok().map(str::to_owned)) + .collect(); + let Some(strings) = strings else { continue }; + let Some(required) = crate::search::prefilter::Required::new(strings) else { + continue; + }; + // The OR is only as selective as its shortest arm. + let weakest = required + .literals() + .iter() + .map(|l| l.chars().count()) + .min() + .unwrap_or(0); + if best.as_ref().is_none_or(|(w, _)| weakest > *w) { + best = Some((weakest, required)); + } + } + best.map(|(_, required)| required) } impl RegexQuery { @@ -335,9 +430,23 @@ impl RegexQuery { Ok(RegexQuery { source: source.to_string(), re, + // Once per query, never per row. A pattern that yields nothing + // simply scans, exactly as every `regex:` query used to. + required: required_literals(source), }) } + /// Literals of which at least one occurs in anything this matches, when the + /// pattern admits such a set. + /// + /// The `regex:` passes use it to narrow what they scan; `None` means the + /// pattern constrains nothing usable (`\d+`, `a.*b`) and the pass reads + /// everything, which is what it always did. See + /// [`crate::search::prefilter`] for the rule a prefilter has to obey. + pub fn required(&self) -> Option<&crate::search::prefilter::Required> { + self.required.as_ref() + } + pub fn is_match(&self, text: &str) -> bool { self.re.is_match(text) } diff --git a/crates/quicksearch-core/src/search/cascade.rs b/crates/quicksearch-core/src/search/cascade.rs index 4f6c47f..d3f8117 100644 --- a/crates/quicksearch-core/src/search/cascade.rs +++ b/crates/quicksearch-core/src/search/cascade.rs @@ -54,6 +54,7 @@ //! order. use std::collections::HashSet; +use std::hash::{BuildHasherDefault, Hasher}; use std::sync::atomic::{AtomicU64, Ordering}; use std::time::{Duration, Instant}; @@ -67,7 +68,7 @@ use crate::query::split::CascadeQuery; use crate::query::translator::{escape_like, quote_phrase}; use crate::snippet; -use super::fuzzy::{edit_budget, Bitap}; +use super::fuzzy::{edit_budget, pigeonhole_chunks, Bitap}; use super::{SearchHit, SearchOptions}; mod passes; @@ -100,10 +101,10 @@ pub fn text_snippet( let opts = snippet::Options { approx_chars: SNIPPET_WINDOW_CHARS, }; - match pattern.literal() { + match text_snippet_counted(pattern, text, folded) { // Literal terms keep the richer multi-occurrence extract; a wildcard // match marks its own first range. - Some(term) => Some(snippet::extract_folded(text, folded, &[term], &opts)), + Some((snip, _)) => Some(snip), None => pattern.find_first_folded(folded).map(|r| { // A greedy pattern can match megabytes; clamp before the window. let r = clamp_match_range(text, r, SNIPPET_WINDOW_CHARS); @@ -112,6 +113,31 @@ pub fn text_snippet( } } +/// [`text_snippet`] for a literal pattern, with the case-insensitive +/// occurrence count the extraction found on its way to the window. `None` +/// when the pattern is not literal. +/// +/// The count is a by-product: [`snippet::extract_folded`] locates every +/// occurrence in `folded` in order to coalesce and mark them, and that set has +/// the same cardinality [`crate::query::pattern::TermPattern::count_folded`] +/// would return. Taking it from here is what lets the full-text pass verify a +/// row and cut its snippet in one sweep of the body rather than two — see +/// `benches/search.rs`, group `cascade_row_sweeps`. It does not generalise to +/// a wildcard, whose snippet comes from a single leftmost match. +pub fn text_snippet_counted( + pattern: &crate::query::pattern::TermPattern, + text: &str, + folded: &str, +) -> Option<(snippet::Snippet, usize)> { + let opts = snippet::Options { + approx_chars: SNIPPET_WINDOW_CHARS, + }; + // The pre-folded form: this runs per candidate row, and folding the term + // again here would allocate once per row for a string the pattern holds. + let term = pattern.literal_folded()?; + Some(snippet::extract_folded(text, folded, &[term], &opts)) +} + /// The fuzzy full-text match in one document body: how many times the term /// occurs within the edit budget, and the Content Match window cut around /// the first occurrence at the cascade's own width. `None` when it does not @@ -120,19 +146,23 @@ pub fn text_snippet( /// Shared with [`crate::live`] for the same reason as [`text_snippet`]: a /// fuzzy row whose file changes has to be re-cut the way it was cut, and /// bitap's range is what it was cut around. `bitap` is built once by the -/// caller — per scan in the pass, per arm in the live watcher — since -/// building it is the cost, and `folded` must be `text` ASCII-lowercased. +/// caller — per scan in the pass, per arm in the live watcher — since building +/// it is the cost. +/// +/// Takes no folded copy, unlike [`text_snippet`]: the matcher folds in its +/// mask table (see [`crate::search::fuzzy`]), so it reads the body as stored. +/// That is the difference between this pass copying and lowercasing every +/// document in the index per keystroke and not doing so. pub fn fuzzy_snippet( bitap: &crate::search::fuzzy::Bitap, text: &str, - folded: &str, ) -> Option<(usize, snippet::Snippet)> { let opts = snippet::Options { approx_chars: SNIPPET_WINDOW_CHARS, }; // `first` is `Some` exactly when `count` is non-zero: it *is* the first // of them. - let (count, first) = bitap.count_and_first(folded.as_bytes()); + let (count, first) = bitap.count_and_first(text.as_bytes()); first.map(|range| (count, snippet::window_around(text, range, &opts))) } @@ -171,7 +201,7 @@ pub fn run( generation, latest_gen, ignore, - emitted: HashSet::new(), + emitted: IdSet::default(), deferred_path: Deferred::default(), deferred_fuzzy_path: Deferred::default(), total: 0, @@ -197,8 +227,13 @@ pub fn run( if cx.cancelled() { return Ok(None); } + // Stop, but do not call it truncation. `remaining() == 0` is also + // what an exactly-full result set looks like, and claiming a cut there + // tells a user to raise `--limit` on a complete answer. `flush_pass` + // is the authority — it sets the flag when it actually had to drop + // rows — and `scan_pass` breaks its row loop the moment the limit + // fills, for the same reason this break exists. if cx.remaining() == 0 { - cx.limited = true; break; } let run_pass = match pass { @@ -317,6 +352,54 @@ struct Deferred { /// inside the GUI's 250 ms result fade. const FLUSH_INTERVAL: Duration = Duration::from_millis(80); +/// Hasher for the emitted-id set, which is probed **once per scanned row**. +/// +/// The default `HashSet` hasher is SipHash-1-3, chosen to be collision-resistant +/// against hostile keys. These keys are SQLite rowids the cascade itself just +/// read — nobody outside chooses them — so the resistance buys nothing, while +/// the ~10 ns it costs is paid on every row of a whole-table scan. +/// +/// Multiplicative, by an odd constant near 2^64/φ. Odd keeps it a bijection, so +/// distinct ids stay distinct; hashbrown then takes the low bits for the bucket +/// and the top seven for its control byte, and the rotate is what puts real +/// entropy in both halves for the near-consecutive ids a table scan produces. +/// +/// Worth ~5% of a fuzzy search — 17.1/17.4/17.9 ms against 18.2/18.3/18.8 over +/// three runs each of `tests/search_alloc.rs`, every run of the one beating +/// every run of the other. Small, but it is the whole of what a hash function +/// choice can be worth, and it is bought for fifteen lines with no behaviour +/// attached. The figure will grow with the row count: this is one probe per +/// scanned row, and the corpus is 50,000 rows. +#[derive(Default)] +struct IdHasher(u64); + +impl Hasher for IdHasher { + fn finish(&self) -> u64 { + self.0 + } + + // The only shape the set ever hashes is a single `i64`, which `Hash for + // i64` delivers through `write_i64`. `write` exists because the trait + // requires it and is deliberately a poor general-purpose hash: routing + // anything else through here would be a bug, not a use. + fn write(&mut self, bytes: &[u8]) { + for &b in bytes { + self.0 = (self.0 ^ u64::from(b)).wrapping_mul(0x0100_0000_01b3); + } + } + + fn write_i64(&mut self, n: i64) { + self.write_u64(n as u64); + } + + fn write_u64(&mut self, n: u64) { + let mixed = n.wrapping_mul(0x9E37_79B9_7F4A_7C15); + self.0 = mixed.rotate_left(31) ^ mixed; + } +} + +type IdSet = HashSet>; + struct Cx<'a> { conn: &'a Connection, query: &'a CascadeQuery, @@ -324,7 +407,7 @@ struct Cx<'a> { generation: u64, latest_gen: &'a AtomicU64, ignore: IgnoreSet, - emitted: HashSet, + emitted: IdSet, /// Ranks 9–10, filled by pass A. deferred_path: Deferred, /// Rank 11, filled by pass C. diff --git a/crates/quicksearch-core/src/search/cascade/passes.rs b/crates/quicksearch-core/src/search/cascade/passes.rs index 082aa7e..44549c1 100644 --- a/crates/quicksearch-core/src/search/cascade/passes.rs +++ b/crates/quicksearch-core/src/search/cascade/passes.rs @@ -20,6 +20,36 @@ fn fold_into(dst: &mut String, text: &str) { dst.make_ascii_lowercase(); } +/// The segment a straddling wildcard can be SQL-prefiltered on: the longest +/// one containing no path separator, or `None` when every segment has one. +/// +/// # Why one segment is enough, and why it must be separator-free +/// +/// The classifier accepts a row only if the whole pattern matches `name` or +/// `parent || name`, and either way **every** segment occurs contiguously +/// somewhere in `parent || name`. So testing any single segment is a superset +/// of what the classifier accepts — the filter can only be too generous, never +/// too strict, which is the direction that keeps real hits from vanishing. +/// +/// Splitting that test across the two stored columns is what needs the +/// separator-free condition. An occurrence of a segment in `parent || name` +/// lies wholly inside `parent`, wholly inside `name`, or spans the join. A +/// spanning occurrence covers the byte immediately before the boundary, and +/// that byte is `parent`'s last — which is always a separator, by the +/// invariant `file_handling::dir_to_db_parent` maintains. A segment with no +/// separator in it therefore cannot span the join, so +/// `name LIKE %s% OR parent LIKE %s%` sees it wherever it is. +/// +/// The longest is chosen for selectivity alone; any of them would be correct. +fn anchor_segment(pattern: &crate::query::pattern::TermPattern) -> Option<&str> { + pattern + .segments() + .iter() + .filter(|s| !s.contains(std::path::MAIN_SEPARATOR)) + .max_by_key(|s| s.len()) + .map(String::as_str) +} + /// Which [`Deferred`] buffer a scan's held-back hits go to. enum DeferSlot { /// Ranks 9–10, flushed by [`Pass::Path`]. Shared by passes A and E, @@ -40,13 +70,28 @@ impl<'a> Cx<'a> { /// `Defer`red hit lands in `defer_slot` at the end of the scan rather /// than being emitted — path-tier ranks sort below stages that have not /// run yet, so they are held back and never flushed mid-scan. + /// + /// `classify` receives the reassembled path **and the name as a slice of + /// it**, both borrowed. The name is not fetched a second time from the row: + /// a path is `parent || name`, so the name is already sitting in the tail + /// of the buffer this pass just built. Handing it over borrowed is what + /// keeps a whole-table scan from allocating a `String` per *scanned* row + /// when only the few that become hits need an owned copy — measured at one + /// allocation per row for the passes with no SQL prefilter (wildcard, + /// regex) and three per row for the fuzzy filename pass. fn scan_pass( &mut self, sql: &str, params: Vec, cancel_every: usize, defer_slot: Option, - mut classify: impl FnMut(&mut Self, &rusqlite::Row<'_>, i64, &str) -> Result, + mut classify: impl FnMut( + &mut Self, + &rusqlite::Row<'_>, + i64, + &str, + &str, + ) -> Result, ) -> Result { let conn = self.conn; // Cached: a search re-runs the same six statements on every keystroke, @@ -92,11 +137,16 @@ impl<'a> Cx<'a> { // Parent first, and no separator between them: every stored parent // already ends in one. See `file_handling::dir_to_db_parent`. path.push_str(borrowed(2)?); + // Where the name starts, so the classifier can have it as a slice + // of the path rather than as a second fetch and a second + // allocation. The parent is written whole and nothing rewrites it, + // so this offset stays a char boundary. + let name_at = path.len(); path.push_str(borrowed(1)?); if self.skip(file_id, &path) { continue; } - match classify(self, row, file_id, &path)? { + match classify(self, row, file_id, &path, &path[name_at..])? { RowHit::Skip => {} RowHit::Emit(hit) => { buf.push(hit); @@ -186,28 +236,46 @@ impl<'a> Cx<'a> { // either sits wholly in one or straddles the boundary, and the // boundary character is a separator the pattern does not contain. This // is ordinary typing, so it is the case worth keeping cheap. - // * Anything else — a multi-segment wildcard whose `%` can span the - // boundary (`doc*q3` over `/x/docs/q3.txt`), or a term with a - // separator in it. No SQL predicate on one column covers those, so - // scan and let the classifier decide, exactly as passes C and E do. + // * A multi-segment wildcard whose `%` can span the boundary + // (`doc*q3` over `/x/docs/q3.txt`), or a term with a separator in it. + // The whole *pattern* cannot be pinned to one column, but one of its + // segments can — see [`anchor_segment`] — and that is enough for a + // superset. Only when no segment qualifies is there nothing left to + // filter on and the pass scans, as passes C and E do. + // + // That last case is not a rare one, which is why it is worth the + // argument: `rep*rt` is two segments, so ordinary wildcard typing used + // to land on `1=1` and pay four regex evaluations — anchored and + // unanchored, cased and folded — on every row in the index. let straddles = pattern.segments().len() > 1 || pattern .segments() .iter() .any(|s| s.contains(std::path::MAIN_SEPARATOR)); + // Both columns, one bound value: `like_for` builds it once and it is + // bound twice. + let two_column = || { + "(f.name LIKE ? ESCAPE '\\' OR f.parent LIKE ? ESCAPE '\\')".to_string() + }; + let bind_twice = |pat: String| { + vec![ + rusqlite::types::Value::Text(pat.clone()), + rusqlite::types::Value::Text(pat), + ] + }; let (predicate, terms) = match (with_paths, straddles) { (false, _) => ( "f.name LIKE ? ESCAPE '\\'".to_string(), vec![rusqlite::types::Value::Text(like)], ), - (true, false) => ( - "(f.name LIKE ? ESCAPE '\\' OR f.parent LIKE ? ESCAPE '\\')".to_string(), - vec![ - rusqlite::types::Value::Text(like.clone()), - rusqlite::types::Value::Text(like), - ], - ), - (true, true) => ("1=1".to_string(), Vec::new()), + (true, false) => (two_column(), bind_twice(like)), + (true, true) => match anchor_segment(pattern) { + Some(anchor) => ( + two_column(), + bind_twice(format!("%{}%", escape_like(anchor))), + ), + None => ("1=1".to_string(), Vec::new()), + }, }; let sql = format!( "SELECT {} FROM files f WHERE {}{}", @@ -219,18 +287,17 @@ impl<'a> Cx<'a> { params, CANCEL_CHECK_ROWS, Some(DeferSlot::Path), - |cx, row, file_id, path| { - let name: String = col(row, 1)?; + |cx, row, file_id, path, name| { // Folding is byte-length preserving, so folded offsets are // valid in the original. For wildcards, tiers 1/2 mean "the // whole name matches the pattern". - let (rank, match_range) = if pattern.whole_match(&name, false) { + let (rank, match_range) = if pattern.whole_match(name, false) { (1.0, (0, name.len())) - } else if pattern.whole_match(&name, true) { + } else if pattern.whole_match(name, true) { (2.0, (0, name.len())) - } else if let Some(r) = pattern.find_first(&name, false) { + } else if let Some(r) = pattern.find_first(name, false) { (3.0, (r.start, r.end)) - } else if let Some(r) = pattern.find_first(&name, true) { + } else if let Some(r) = pattern.find_first(name, true) { (4.0, (r.start, r.end)) } else if !with_paths { return Ok(RowHit::Skip); @@ -249,14 +316,12 @@ impl<'a> Cx<'a> { let is_path_tier = rank >= 9.0; // The "snippet" of a name or path hit is that field itself // with the matched span marked. - let snip = snippet::whole_field( - if is_path_tier { path } else { name.as_str() }, - match_range, - ); + let snip = + snippet::whole_field(if is_path_tier { path } else { name }, match_range); let (size, mtime) = size_and_mtime(row)?; let hit = SearchHit { file_id, - name, + name: name.to_string(), path: path.to_string(), size, mtime, @@ -333,7 +398,7 @@ impl<'a> Cx<'a> { let mut doc = crate::db::repo::DocDecoder::new()?; let mut lower = String::new(); // Decompression dominates: check cancellation every row. - self.scan_pass(&sql, params, 1, None, |cx, row, file_id, path| { + self.scan_pass(&sql, params, 1, None, |cx, row, file_id, path, name| { let blob: Option<&[u8]> = row .get_ref(5) .map_err(|e| e.to_string())? @@ -345,30 +410,48 @@ impl<'a> Cx<'a> { Some(text) => { // Fold once: the case-insensitive count, the first-match // search and the snippet extraction all need it, and - // nearly every candidate takes this path. - let mut folded = false; - let (count, stage) = { - let count_cs = pattern.count(text, false); - if count_cs > 0 { - (count_cs, 5) - } else { - fold_into(&mut lower, text); - folded = true; - let count_ci = pattern.count_folded(&lower); - if count_ci > 0 { - (count_ci, 6) - } else { + // nearly every candidate takes this path — including + // every candidate that is about to be dropped, since + // proving the pattern absent is itself a folded scan. + fold_into(&mut lower, text); + match super::text_snippet_counted(pattern, text, &lower) { + // Literal: one folded sweep does the verifying, the + // counting and the snippet together. The + // case-sensitive count is still its own sweep, but + // only for a row that survived — it decides stage 5 + // against stage 6, and ranks within 5. + Some((snip, count_ci)) => { + if count_ci == 0 { // Folded/unordered FTS candidate: the // pattern never occurs — drop it. return Ok(RowHit::Skip); } + let count_cs = pattern.count(text, false); + let (count, stage) = if count_cs > 0 { + (count_cs, 5) + } else { + (count_ci, 6) + }; + (stage as f64 + count_frac(count), stage as u8, Some(snip)) + } + // Wildcard: its snippet is cut around a single + // leftmost match, so the count is not a by-product of + // it and each step stays its own scan. + None => { + let count_cs = pattern.count(text, false); + let (count, stage) = if count_cs > 0 { + (count_cs, 5) + } else { + let count_ci = pattern.count_folded(&lower); + if count_ci == 0 { + return Ok(RowHit::Skip); + } + (count_ci, 6) + }; + let snip = super::text_snippet(pattern, text, &lower); + (stage as f64 + count_frac(count), stage as u8, snip) } - }; - if !folded { - fold_into(&mut lower, text); } - let snip = super::text_snippet(pattern, text, &lower); - (stage as f64 + count_frac(count), stage as u8, snip) } // No stored text: can't case-verify or count. On the // FTS-narrowed path accept at the bottom of rank 6 as @@ -388,7 +471,7 @@ impl<'a> Cx<'a> { let (size, mtime) = size_and_mtime(row)?; Ok(RowHit::Emit(SearchHit { file_id, - name: col(row, 1)?, + name: name.to_string(), path: path.to_string(), size, mtime, @@ -410,11 +493,12 @@ impl<'a> Cx<'a> { if query.pattern.is_wildcard() { return Ok(true); } - let folded_term = query.term.to_ascii_lowercase(); - let Some(k) = edit_budget(folded_term.len(), self.options.fuzzy_max_edits) else { + // The term goes in as typed: the matcher folds in its mask table, so + // neither side is lowercased here or per row. + let Some(k) = edit_budget(query.term.len(), self.options.fuzzy_max_edits) else { return Ok(true); }; - let Some(bitap) = Bitap::new(folded_term.as_bytes(), k) else { + let Some(bitap) = Bitap::new(query.term.as_bytes(), k) else { return Ok(true); }; let with_paths = path_tiers_enabled(&query.pattern); @@ -429,18 +513,16 @@ impl<'a> Cx<'a> { params, CANCEL_CHECK_ROWS, Some(DeferSlot::FuzzyPath), - |cx, row, file_id, path| { - let name: String = col(row, 1)?; + |cx, row, file_id, path, name| { // The name wins when both fire; only a name miss falls - // through to the path tier. - let folded_name = name.to_ascii_lowercase(); - let (rank, field, range) = match bitap - .best_distance_and_first(folded_name.as_bytes()) - { - Some((distance, range)) => (7.0 + 0.1 * distance as f64, name.as_str(), range), + // through to the path tier. Both fields are read as stored — + // this is a whole-table scan, and the two `to_ascii_lowercase` + // calls that used to stand here were two allocations and two + // copies for every row in the index, per keystroke. + let (rank, field, range) = match bitap.best_distance_and_first(name.as_bytes()) { + Some((distance, range)) => (7.0 + 0.1 * distance as f64, name, range), None if with_paths => { - let folded_path = path.to_ascii_lowercase(); - match bitap.best_distance_and_first(folded_path.as_bytes()) { + match bitap.best_distance_and_first(path.as_bytes()) { Some((distance, range)) => (11.0 + 0.1 * distance as f64, path, range), None => return Ok(RowHit::Skip), } @@ -462,7 +544,7 @@ impl<'a> Cx<'a> { let (size, mtime) = size_and_mtime(row)?; let hit = SearchHit { file_id, - name, + name: name.to_string(), path: path.to_string(), size, mtime, @@ -495,25 +577,77 @@ impl<'a> Cx<'a> { if self.query.pattern.is_wildcard() { return Ok(true); } - let folded_term = self.query.term.to_ascii_lowercase(); - let Some(k) = edit_budget(folded_term.len(), self.options.fuzzy_max_edits) else { + // As typed; the matcher folds in its mask table. + let Some(k) = edit_budget(self.query.term.len(), self.options.fuzzy_max_edits) else { return Ok(true); }; - let Some(bitap) = Bitap::new(folded_term.as_bytes(), k) else { + let Some(bitap) = Bitap::new(self.query.term.as_bytes(), k) else { return Ok(true); }; - let sql = format!( - "SELECT {}, dt.text_zstd \ - FROM documents_text dt JOIN files f ON f.id = dt.file_id WHERE 1=1{}", - HIT_COLUMNS, self.query.filter_sql - ); - let params = self.params_with_filters(Vec::new()); - // One decoder and one fold buffer for the whole scan, reused per row. + // The candidate set. Without a prefilter this pass reads *every* stored + // document in the index on every keystroke — decompressing each one and + // running bitap over it — which is the most expensive thing the cascade + // does by a wide margin. + // + // The pigeonhole split gives a sound narrowing: at most `k` of the + // `k + 1` chunks can be damaged, so at least one survives verbatim in + // any document that matches, and asking the trigram index for "holds + // any one of these chunks" is a superset of what this pass can accept. + // See [`pigeonhole_chunks`] for the argument, and + // `tests/fuzzy_prefilter_fuzz.rs` for what defends it. + // + // Only a superset — the chunks are three characters and match plenty of + // documents that do not match the term at all. Every candidate is still + // decompressed and bitap-verified below; nothing about ranking or + // acceptance changes, only how many rows get that far. + // + // `None` means the term is too short to split (below `3 × (k + 1)` + // characters), and then there is no prefilter to be had and the pass + // scans as it always did. + let (sql, params) = match pigeonhole_chunks(&self.query.term, k) { + Some(chunks) => { + // Every chunk is quoted into inertness: a chunk is a slice of + // whatever the user typed, so it can contain `"`, `*`, `:`, + // `NEAR` and the rest of FTS5's syntax, and an unquoted one + // would be a syntax error instead of a search. + let expr = chunks + .iter() + .map(|c| format!("text: {}", quote_phrase(c))) + .collect::>() + .join(" OR "); + ( + format!( + "SELECT {}, dt.text_zstd \ + FROM searchabletext \ + JOIN files f ON f.id = searchabletext.rowid \ + JOIN documents_text dt ON dt.file_id = f.id \ + WHERE searchabletext MATCH ?{}", + HIT_COLUMNS, self.query.filter_sql + ), + self.params_with_filters(vec![rusqlite::types::Value::Text(format!( + "({})", + expr + ))]), + ) + } + None => ( + format!( + "SELECT {}, dt.text_zstd \ + FROM documents_text dt JOIN files f ON f.id = dt.file_id WHERE 1=1{}", + HIT_COLUMNS, self.query.filter_sql + ), + self.params_with_filters(Vec::new()), + ), + }; + // One decoder for the whole scan, reused per row. No fold buffer any + // more: this pass reads every stored document in the index on every + // keystroke, and it used to copy and lowercase each one — up to + // `maximum_text_size` per row — purely to give bitap a folded + // haystack. The matcher folds itself now. let mut doc = crate::db::repo::DocDecoder::new()?; - let mut folded = String::new(); // Decompression dominates: check cancellation every row. - self.scan_pass(&sql, params, 1, None, |cx, row, file_id, path| { + self.scan_pass(&sql, params, 1, None, |cx, row, file_id, path, name| { let blob: Option<&[u8]> = row .get_ref(5) .map_err(|e| e.to_string())? @@ -522,10 +656,7 @@ impl<'a> Cx<'a> { let Some(text) = blob.and_then(|b| doc.decode(b)) else { return Ok(RowHit::Skip); }; - // ASCII folding is byte-length preserving, so ranges found in - // the folded buffer are valid in the original. - fold_into(&mut folded, text); - let Some((count, snip)) = super::fuzzy_snippet(&bitap, text, &folded) else { + let Some((count, snip)) = super::fuzzy_snippet(&bitap, text) else { return Ok(RowHit::Skip); }; if !cx.regex_accepts(file_id, path, Some(text))? { @@ -534,7 +665,7 @@ impl<'a> Cx<'a> { let (size, mtime) = size_and_mtime(row)?; Ok(RowHit::Emit(SearchHit { file_id, - name: col(row, 1)?, + name: name.to_string(), path: path.to_string(), size, mtime, @@ -549,38 +680,46 @@ impl<'a> Cx<'a> { /// entirely and runs on every name, falling back to the full path. /// Name hits reuse rank 4, path hits defer to rank 10, so the GUI's /// stage-based rendering needs no new cases. + /// + /// Narrowed by the pattern's required literals where it has any — the same + /// two-column `LIKE` the wildcard filename pass uses, for the same reason + /// (see [`crate::search::prefilter::Required::like_predicate`]). Without one + /// this evaluates the user's regex against every name *and* every path in + /// the index, per keystroke; a pattern like `\d+` still does, because there + /// is no literal in it to filter on. pub(super) fn pass_regex_name(&mut self) -> Result { let query = self.query; let re = query.regex.as_ref().expect("regex-only pass list"); + let (predicate, terms) = match re.required().and_then(|r| r.like_predicate()) { + Some((sql, params)) => (sql, params), + None => ("1=1".to_string(), Vec::new()), + }; let sql = format!( - "SELECT {} FROM files f WHERE 1=1{}", - HIT_COLUMNS, query.filter_sql + "SELECT {} FROM files f WHERE {}{}", + HIT_COLUMNS, predicate, query.filter_sql ); - let params = self.params_with_filters(Vec::new()); + let params = self.params_with_filters(terms); self.scan_pass( &sql, params, CANCEL_CHECK_ROWS, Some(DeferSlot::Path), - |_cx, row, file_id, path| { - let name: String = col(row, 1)?; + |_cx, row, file_id, path, name| { // The name is the better hit; only a name miss falls through // to the path tier — mirroring pass A. - let (rank, match_range, is_path_tier) = match re.find_first(&name) { + let (rank, match_range, is_path_tier) = match re.find_first(name) { Some(r) => (4.0, (r.start, r.end), false), None => match re.find_first(path) { Some(r) => (10.0, (r.start, r.end), true), None => return Ok(RowHit::Skip), }, }; - let snip = snippet::whole_field( - if is_path_tier { path } else { name.as_str() }, - match_range, - ); + let snip = + snippet::whole_field(if is_path_tier { path } else { name }, match_range); let (size, mtime) = size_and_mtime(row)?; let hit = SearchHit { file_id, - name, + name: name.to_string(), path: path.to_string(), size, mtime, @@ -598,22 +737,44 @@ impl<'a> Cx<'a> { } /// Regex-only pass over every stored document text, reusing rank 6. + /// + /// Narrowed by the pattern's required literals through the trigram index, + /// exactly as the fuzzy full-text pass narrows by its pigeonhole chunks — + /// both are "at least one of these strings is present", and both go through + /// [`crate::search::prefilter::Required::fts_expr`]. Without a usable set + /// this decompresses and regex-scans every stored document in the index on + /// every keystroke. pub(super) fn pass_regex_content(&mut self) -> Result { let query = self.query; let re = query.regex.as_ref().expect("regex-only pass list"); - let sql = format!( - "SELECT {}, dt.text_zstd \ - FROM documents_text dt JOIN files f ON f.id = dt.file_id WHERE 1=1{}", - HIT_COLUMNS, query.filter_sql - ); - let params = self.params_with_filters(Vec::new()); + let (sql, params) = match re.required().and_then(|r| r.fts_expr()) { + Some(expr) => ( + format!( + "SELECT {}, dt.text_zstd \ + FROM searchabletext \ + JOIN files f ON f.id = searchabletext.rowid \ + JOIN documents_text dt ON dt.file_id = f.id \ + WHERE searchabletext MATCH ?{}", + HIT_COLUMNS, query.filter_sql + ), + self.params_with_filters(vec![rusqlite::types::Value::Text(expr)]), + ), + None => ( + format!( + "SELECT {}, dt.text_zstd \ + FROM documents_text dt JOIN files f ON f.id = dt.file_id WHERE 1=1{}", + HIT_COLUMNS, query.filter_sql + ), + self.params_with_filters(Vec::new()), + ), + }; let snippet_opts = snippet::Options { approx_chars: SNIPPET_WINDOW_CHARS, }; // One decoder for the whole scan, reused per row. let mut doc = crate::db::repo::DocDecoder::new()?; // Decompression dominates: check cancellation every row. - self.scan_pass(&sql, params, 1, None, |_cx, row, file_id, path| { + self.scan_pass(&sql, params, 1, None, |_cx, row, file_id, path, name| { let blob: Option<&[u8]> = row .get_ref(5) .map_err(|e| e.to_string())? @@ -635,7 +796,7 @@ impl<'a> Cx<'a> { let (size, mtime) = size_and_mtime(row)?; Ok(RowHit::Emit(SearchHit { file_id, - name: col(row, 1)?, + name: name.to_string(), path: path.to_string(), size, mtime, diff --git a/crates/quicksearch-core/src/search/fuzzy.rs b/crates/quicksearch-core/src/search/fuzzy.rs index e0a8367..c749f8f 100644 --- a/crates/quicksearch-core/src/search/fuzzy.rs +++ b/crates/quicksearch-core/src/search/fuzzy.rs @@ -5,9 +5,17 @@ //! (insertion / deletion / substitution); the u64 bit-parallel update costs //! O(k) word ops per haystack byte with zero allocations. //! -//! Callers fold both sides to ASCII lowercase first (the pipeline-wide -//! convention). Patterns are limited to 64 bytes by the machine word; the -//! cascade skips fuzzy stages for longer terms. +//! Matching is **ASCII-case-insensitive, in the automaton itself**: the mask +//! table sets a bit for both cases of every pattern byte, so neither side needs +//! folding first. That is not a convenience — it is what lets the whole-table +//! fuzzy passes run. Folding the haystack meant a `to_ascii_lowercase()` per +//! scanned filename *and* per scanned path, and, in the full-text pass, a +//! complete copy-and-fold of every stored document on every keystroke. Bytes +//! above 0x7F are untouched by ASCII folding, so setting both cases in the mask +//! accepts exactly what folding both sides accepted. +//! +//! Patterns are limited to 64 bytes by the machine word; the cascade skips +//! fuzzy stages for longer terms. /// Registers the automaton needs: one per error count `0..=k`. /// @@ -19,7 +27,7 @@ const MAX_REGISTERS: usize = 22; pub struct Bitap { - /// `masks[c]` has bit `i` set iff `pattern[i] == c`. + /// `masks[c]` has bit `i` set iff `pattern[i] == c` ignoring ASCII case. masks: [u64; 256], /// The same table for the *reversed* pattern, which is what lets /// [`Bitap::match_start`] find where a match began by scanning backwards @@ -35,6 +43,11 @@ impl Bitap { /// `None` when the pattern is empty, longer than 64 bytes, or the edit /// budget does not fit the registers (`reset` shifts by `k`, and the /// register array holds [`MAX_REGISTERS`]). + /// + /// The pattern need not be folded: each byte's bit is set under **both** + /// ASCII cases, which is what makes the automaton case-insensitive and the + /// haystack fold unnecessary. For a byte that is not an ASCII letter the + /// two cases are the same byte and the second write is a no-op. pub fn new(pattern: &[u8], k: usize) -> Option { if pattern.is_empty() || pattern.len() > 64 || k >= MAX_REGISTERS { return None; @@ -42,8 +55,12 @@ impl Bitap { let mut masks = [0u64; 256]; let mut rev_masks = [0u64; 256]; for (i, &b) in pattern.iter().enumerate() { - masks[b as usize] |= 1u64 << i; - rev_masks[b as usize] |= 1u64 << (pattern.len() - 1 - i); + let (lower, upper) = (b.to_ascii_lowercase(), b.to_ascii_uppercase()); + let (fwd, rev) = (1u64 << i, 1u64 << (pattern.len() - 1 - i)); + masks[lower as usize] |= fwd; + masks[upper as usize] |= fwd; + rev_masks[lower as usize] |= rev; + rev_masks[upper as usize] |= rev; } Some(Bitap { masks, @@ -224,6 +241,70 @@ impl Bitap { } } +/// Re-exported: the trigram floor is a property of the index, not of fuzzy +/// matching, and the regex prefilter applies the same one. See +/// [`crate::search::prefilter`]. +pub use super::prefilter::TRIGRAM_FLOOR; + +/// Split `term` into `k + 1` consecutive chunks of at least [`TRIGRAM_FLOOR`] +/// characters each, for the fuzzy full-text pass's candidate prefilter. +/// `None` when the term is too short to divide that way. +/// +/// # Why this is a sound prefilter +/// +/// The chunks **partition** the term: consecutive, disjoint, and together the +/// whole of it. Suppose the term occurs somewhere in a document within `k` +/// edits. Each edit falls inside at most one chunk, so at most `k` of the +/// `k + 1` chunks are touched — and therefore at least one chunk survives +/// *verbatim* in the document. Asking the index for "any document containing +/// chunk 1, or chunk 2, … " is consequently a **superset** of the documents the +/// pass can accept, and narrowing to it cannot lose a hit. It can admit +/// documents that do not match at all, which is harmless: every candidate is +/// still verified by the bitap scan that follows. +/// +/// The partition is what makes it work, so it must stay one. Chunks that +/// overlapped, or that skipped part of the term, would let `k` edits damage +/// every chunk and the argument would collapse silently — as a search that +/// quietly stops finding things. +/// +/// # Why the floor, and why chars rather than bytes +/// +/// Below `3 * (k + 1)` characters some chunk would be shorter than a trigram +/// and match no token at all, turning the "superset" into an empty set. There +/// is no prefilter for such a term and the caller must scan; that is what +/// `None` says. Note this is reachable only when `fuzzy_max_edits` *binds* — +/// [`edit_budget`]'s own ladder gives one edit per three characters, so a term +/// long enough for `k` edits by length alone is never long enough to split. +/// +/// Splitting on characters, not bytes: a byte split can land inside a UTF-8 +/// sequence, and the halves would be handed to FTS5 as phrases that no longer +/// spell anything the tokenizer indexed. +pub fn pigeonhole_chunks(term: &str, k: usize) -> Option> { + let chunks = k + 1; + let total = term.chars().count(); + if total < TRIGRAM_FLOOR * chunks { + return None; + } + // Char-boundary offsets, plus the end, so a chunk can be sliced by + // character index without re-walking the string per chunk. + let mut bounds: Vec = term.char_indices().map(|(at, _)| at).collect(); + bounds.push(term.len()); + + // The remainder is spread one character at a time over the leading chunks + // rather than dumped on the last, so no chunk is left near the floor while + // another is long. Every chunk is a candidate; the shortest is the weakest + // filter, so the useful thing is to keep the shortest as long as possible. + let (base, extra) = (total / chunks, total % chunks); + let mut out = Vec::with_capacity(chunks); + let mut start = 0usize; + for i in 0..chunks { + let end = start + base + usize::from(i < extra); + out.push(&term[bounds[start]..bounds[end]]); + start = end; + } + Some(out) +} + /// The cascade's edit-distance budget for a folded term: one edit per /// three characters, capped by `[search].fuzzy_max_edits`. Terms outside /// 3..=64 bytes skip the fuzzy stages entirely (< 3 is noise, > 64 exceeds @@ -269,6 +350,35 @@ mod tests { &hay[s..e] } + /// The property that removes the fold from every caller: a pattern and a + /// haystack that differ only in case match at distance zero, with neither + /// side lowercased first. + #[test] + fn case_is_free_without_folding_either_side() { + assert_eq!(best("HELLO", "say hello world", 2), Some(0)); + assert_eq!(best("hello", "say HELLO world", 2), Some(0)); + assert_eq!(best("HeLLo", "say hEllO world", 0), Some(0)); + // A case difference is not an edit, so the budget stays available for + // real ones: one substitution on top of four case flips still fits k=1. + assert_eq!(best("hello", "say HeXLO world", 1), Some(1)); + // And the marked span is the occurrence as it appears in the haystack. + assert_eq!(marked("QUARTZITE", "the quartzite slab", 2), "quartzite"); + assert_eq!(marked_best("quartzite", "the QUARTZITE slab", 2), "QUARTZITE"); + } + + /// Non-ASCII bytes are untouched by ASCII case folding, so setting both + /// cases in the mask cannot make two different multi-byte characters + /// collide. + #[test] + fn non_ascii_bytes_are_not_folded_together() { + // 'é' is 0xC3 0xA9 and 'É' is 0xC3 0x89 — distinct byte sequences that + // ASCII folding leaves distinct. The second byte differs, so this is + // one substitution, not a free case flip. + assert_eq!(best("café", "le café", 0), Some(0)); + assert_eq!(best("café", "le CAFÉ", 0), None, "É is not a fold of é"); + assert_eq!(best("café", "le CAFÉ", 1), Some(1), "and costs one edit"); + } + #[test] fn exact_substring_is_distance_zero() { assert_eq!(best("hello", "say hello world", 2), Some(0)); @@ -511,6 +621,11 @@ mod tests { /// Brute-force oracle: minimum Levenshtein distance between `pattern` /// and any substring of `hay`, capped at k. + /// + /// Compares **ignoring ASCII case**, matching the automaton: the mask table + /// sets both cases of every pattern byte, so a case difference is not an + /// edit. On an all-lowercase alphabet this is identical to an exact + /// comparison, so the older cases below are unaffected by the fold. fn oracle(pattern: &[u8], hay: &[u8], k: usize) -> Option { // An occurrence must end at some text position; empty text has none. // Without this, k >= pattern-length "matches" empty text by deleting @@ -528,7 +643,11 @@ mod tests { for i in 1..=m { cur[0] = i; for j in 1..=hay.len() { - let cost = if pattern[i - 1] == hay[j - 1] { 0 } else { 1 }; + let cost = if pattern[i - 1].eq_ignore_ascii_case(&hay[j - 1]) { + 0 + } else { + 1 + }; cur[j] = (prev[j - 1] + cost).min(prev[j] + 1).min(cur[j - 1] + 1); } std::mem::swap(&mut prev, &mut cur); @@ -553,7 +672,10 @@ mod tests { .wrapping_add(1442695040888963407); (seed >> 33) as usize }; - let alphabet = b"abcx"; + // Mixed case on both sides, which is the whole point: the matcher folds + // in its mask table rather than having its haystack folded for it, and + // an alphabet of one case could never tell the two apart. + let alphabet = b"abcxABCX"; for _ in 0..500 { let plen = 3 + rng() % 6; let hlen = rng() % 20; diff --git a/crates/quicksearch-core/src/search/mod.rs b/crates/quicksearch-core/src/search/mod.rs index 2fdb70a..5676b7c 100644 --- a/crates/quicksearch-core/src/search/mod.rs +++ b/crates/quicksearch-core/src/search/mod.rs @@ -29,6 +29,7 @@ pub mod cascade; pub mod duplicates; pub mod fuzzy; +pub mod prefilter; use std::path::{Path, PathBuf}; use std::sync::atomic::{AtomicU64, Ordering}; diff --git a/crates/quicksearch-core/src/search/prefilter.rs b/crates/quicksearch-core/src/search/prefilter.rs new file mode 100644 index 0000000..ac92854 --- /dev/null +++ b/crates/quicksearch-core/src/search/prefilter.rs @@ -0,0 +1,222 @@ +//! Turning "something that must be present" into a SQL narrowing. +//! +//! Three of the cascade's passes would otherwise read the whole index on every +//! keystroke: the fuzzy full-text pass decompresses every stored document, and +//! the two `regex:` passes run the user's regex over every name, every path and +//! every document. In each case there is a set of literal strings of which **at +//! least one must occur** in anything the pass can accept, and that set is +//! enough to make the database do the rejecting instead. +//! +//! Where the sets come from differs; what is done with them does not, which is +//! why they meet here: +//! +//! * the fuzzy pass splits its term into `k + 1` chunks, at most `k` of which +//! an in-budget match can damage — see +//! [`crate::search::fuzzy::pigeonhole_chunks`]; +//! * a `regex:` query hands its pattern to the same literal analysis the regex +//! engine uses to build its own prefilter — see +//! [`crate::query::pattern::RegexQuery`]. +//! +//! # The one rule +//! +//! A prefilter must be a **superset** of what the pass accepts. It may admit +//! rows the pass then rejects — every candidate is verified afterwards exactly +//! as before, so ranking and results do not change, only how many rows are +//! looked at. It must never exclude a row the pass would have accepted, because +//! that failure has no symptom: the file simply stops appearing, and no error +//! is raised anywhere. +//! +//! Everything below is guards in service of that rule. + +use rusqlite::types::Value; + +use crate::query::translator::{escape_like, quote_phrase}; + +/// Characters in the smallest unit the FTS5 trigram index can be queried for. +/// +/// A phrase shorter than this matches no token at all, so a prefilter built +/// from one would return the empty set rather than a superset — the exact +/// failure the module note forbids. It bounds [`Required::fts_expr`] only: +/// `LIKE` has no such floor, which is why the two predicates guard separately. +pub const TRIGRAM_FLOOR: usize = 3; + +/// Most literals worth OR-ing together. +/// +/// A case-insensitive pattern expands combinatorially — `(?i)FOO` extracts as +/// eight literals — and each one costs a term in the MATCH expression or two +/// `LIKE`s per row. Past some width the filter stops being cheaper than the +/// scan it replaces, and falling back to the scan is always correct. +const MAX_LITERALS: usize = 32; + +/// Literals of which at least one occurs in anything the query can match. +#[derive(Debug, Clone)] +pub struct Required(Vec); + +impl Required { + /// `None` when the set cannot constrain anything: empty, too wide to be + /// worth it, or containing an empty literal. + /// + /// The empty-literal case is the one that matters. A literal set containing + /// `""` says "a match may begin with nothing", which is not a constraint at + /// all — building a filter from it would narrow to rows containing the + /// empty string, which is a statement SQL is entitled to answer any way it + /// likes. Callers see `None` and scan. + pub fn new(literals: Vec) -> Option { + if literals.is_empty() || literals.len() > MAX_LITERALS { + return None; + } + if literals.iter().any(|l| l.is_empty()) { + return None; + } + Some(Required(literals)) + } + + pub fn literals(&self) -> &[String] { + &self.0 + } + + /// A `searchabletext MATCH` expression: `(text: "a" OR text: "b" …)`. + /// + /// `None` when any literal is shorter than [`TRIGRAM_FLOOR`] **characters**. + /// Characters, not bytes: `café` is five bytes and four characters, and + /// `日本` is six bytes and two — the tokenizer indexes character triples, so + /// a byte-length test would admit a phrase that matches no token. + /// + /// Every literal goes through [`quote_phrase`], which is what makes this + /// safe for text the user typed: a literal can contain `"`, `*`, `:`, + /// `NEAR` and the rest of FTS5's syntax, and unquoted that is a syntax + /// error rather than a search. + /// + /// The index folds case and strips diacritics (`remove_diacritics 1`), so + /// it matches *more* than the literal as written. That direction is the + /// harmless one. + pub fn fts_expr(&self) -> Option { + if self + .0 + .iter() + .any(|l| l.chars().count() < TRIGRAM_FLOOR) + { + return None; + } + Some(format!( + "({})", + self.0 + .iter() + .map(|l| format!("text: {}", quote_phrase(l))) + .collect::>() + .join(" OR ") + )) + } + + /// A predicate over the `files` columns, plus the values it binds: + /// `(f.name LIKE ? OR f.parent LIKE ? OR …)`. + /// + /// `None` when any literal contains a path separator. + /// + /// # Why the separator matters + /// + /// There is no `path` column — a file's path is `parent || name` — so a + /// literal has to be looked for in the two columns separately. An + /// occurrence in the concatenation lies wholly inside `parent`, wholly + /// inside `name`, or spans the join. A spanning occurrence necessarily + /// covers the byte before the boundary, and that byte is `parent`'s last, + /// which is always a separator (see + /// [`crate::file_handling::dir_to_db_parent`]). So a literal with no + /// separator in it cannot span the join and the two-column test sees it + /// wherever it is — while a literal *with* one might sit exactly across the + /// boundary, be invisible to both `LIKE`s, and take its row with it. + /// + /// All-or-nothing on purpose: the set is an OR, so a row whose only present + /// literal is the untestable one would be dropped. One bad literal + /// therefore disqualifies the whole predicate rather than being skipped. + /// + /// No trigram floor here — `LIKE '%ab%'` is a perfectly good filter. + pub fn like_predicate(&self) -> Option<(String, Vec)> { + if self + .0 + .iter() + .any(|l| l.contains(std::path::MAIN_SEPARATOR)) + { + return None; + } + let mut clauses = Vec::with_capacity(self.0.len()); + let mut params = Vec::with_capacity(self.0.len() * 2); + for literal in &self.0 { + clauses.push("f.name LIKE ? ESCAPE '\\' OR f.parent LIKE ? ESCAPE '\\'"); + let pattern = format!("%{}%", escape_like(literal)); + params.push(Value::Text(pattern.clone())); + params.push(Value::Text(pattern)); + } + Some((format!("({})", clauses.join(" OR ")), params)) + } +} + +#[cfg(test)] +mod tests { + use super::*; + + fn req(lits: &[&str]) -> Option { + Required::new(lits.iter().map(|s| s.to_string()).collect()) + } + + #[test] + fn a_set_that_cannot_constrain_is_rejected() { + assert!(req(&[]).is_none(), "nothing to filter on"); + assert!(req(&["abc", ""]).is_none(), "an empty literal is no constraint"); + let wide: Vec = (0..MAX_LITERALS + 1).map(|i| format!("lit{i}")).collect(); + assert!(Required::new(wide).is_none(), "too wide to be worth it"); + } + + #[test] + fn the_trigram_floor_counts_characters_not_bytes() { + // Four characters, five bytes: usable. + assert!(req(&["café"]).unwrap().fts_expr().is_some()); + // Two characters, six bytes: a byte test would wrongly admit this. + assert!(req(&["日本"]).unwrap().fts_expr().is_none()); + assert!(req(&["ab"]).unwrap().fts_expr().is_none()); + assert!(req(&["abc", "de"]).unwrap().fts_expr().is_none(), "all of them"); + } + + #[test] + fn fts5_syntax_in_a_literal_is_quoted_inert() { + let expr = req(&["a\"b", "NEAR", "x*y"]).unwrap().fts_expr().unwrap(); + // The embedded quote is doubled, which is FTS5's own escape. + assert!(expr.contains(r#""a""b""#), "{expr}"); + assert!(expr.contains(r#""NEAR""#), "{expr}"); + assert!(expr.contains(r#""x*y""#), "{expr}"); + assert_eq!(expr.matches(" OR ").count(), 2); + } + + #[test] + fn a_literal_with_a_separator_disqualifies_the_like_predicate() { + let sep = std::path::MAIN_SEPARATOR; + assert!(req(&["abc"]).unwrap().like_predicate().is_some()); + assert!( + req(&["abc", &format!("d{sep}e")]) + .unwrap() + .like_predicate() + .is_none(), + "one untestable literal disqualifies the whole OR" + ); + } + + #[test] + fn like_metacharacters_in_a_literal_stay_literal() { + let (sql, params) = req(&["100%_x"]).unwrap().like_predicate().unwrap(); + assert_eq!(params.len(), 2, "one literal, bound to both columns"); + assert!(sql.contains("ESCAPE '\\'")); + assert!( + matches!(¶ms[0], Value::Text(t) if t == "%100\\%\\_x%"), + "{:?}", + params[0] + ); + } + + #[test] + fn several_literals_become_one_or_over_both_columns() { + let (sql, params) = req(&["abc", "def"]).unwrap().like_predicate().unwrap(); + assert_eq!(params.len(), 4); + assert_eq!(sql.matches("f.name LIKE").count(), 2); + assert_eq!(sql.matches("f.parent LIKE").count(), 2); + } +} diff --git a/crates/quicksearch-core/src/snippet.rs b/crates/quicksearch-core/src/snippet.rs index 561158c..15392a3 100644 --- a/crates/quicksearch-core/src/snippet.rs +++ b/crates/quicksearch-core/src/snippet.rs @@ -55,35 +55,102 @@ impl Snippet { /// [`extract`] against a haystack the caller has already ASCII-folded. /// `folded` must be `text.to_ascii_lowercase()` — the fold is byte-length /// preserving, which is what lets offsets found in it slice the original. -pub fn extract_folded(text: &str, folded: &str, terms: &[&str], opts: &Options) -> Snippet { +/// +/// Returns the window together with **how many occurrences it found**, before +/// touching ranges are coalesced. For a single term that number is exactly +/// what [`count_occurrences`] against `folded` would return, which is what +/// lets the full-text pass take its case-insensitive count from here instead +/// of sweeping the body a second time to compute it. +/// +/// Blank terms are dropped, but a term that merely *has* surrounding +/// whitespace is searched as given: trimming it here would count and +/// highlight a different string than the pattern's own counters do. +pub fn extract_folded( + text: &str, + folded: &str, + terms: &[&str], + opts: &Options, +) -> (Snippet, usize) { debug_assert_eq!(folded.len(), text.len(), "ASCII folding preserves length"); if text.is_empty() { - return Snippet::empty(); + return (Snippet::empty(), 0); } let effective_terms: Vec<&str> = terms .iter() - .map(|t| t.trim()) - .filter(|t| !t.is_empty()) + .copied() + .filter(|t| !t.trim().is_empty()) .collect(); if effective_terms.is_empty() { - return head_window(text, opts.approx_chars); + return (head_window(text, opts.approx_chars), 0); } // `memmem` rather than `str::match_indices`: both find non-overlapping // occurrences, but std's Two-Way searcher has no vector prefilter and a // full-text row scans a whole document body. See `benches/search.rs`, // group `substring`. + // The count has to see every occurrence, so the walk runs to the end of the + // body either way. What does *not* have to happen is keeping them: the + // window is fixed by the first match, and everything starting past its + // right edge is discarded a few lines below. Storing them all meant a `Vec` + // proportional to the match count and then a sort over it — for a term + // occurring thousands of times in one file, which is an ordinary minified + // bundle or log, that is hundreds of kilobytes and an O(n log n) sort per + // candidate row, to render a 600-byte window. + // + // Bounded only for a single term, which is every caller the cascade makes + // (`cascade::text_snippet` passes one). With several, two different terms + // can coalesce across the edge and no single-pass bound sees it, so they + // are collected in full rather than approximately. + let pre_pad = opts.approx_chars / 3; + let bounded = effective_terms.len() == 1; let mut matches: Vec<(usize, usize)> = Vec::new(); + let mut found = 0usize; + // The right edge, once the first match has fixed it. Computed exactly as + // the window is computed below, so "kept" and "rendered" cannot disagree. + let mut keep_below: Option = None; + for term in &effective_terms { - let pattern = term.to_ascii_lowercase(); - matches.extend( - memchr::memmem::find_iter(folded.as_bytes(), pattern.as_bytes()) - .map(|at| (at, at + pattern.len())), - ); + // Borrow when the term is already folded, which is the case for every + // call the search cascade makes: this runs once per candidate row, and + // an unconditional `to_ascii_lowercase` is an allocation per row to + // rebuild a string the pattern already holds. + let pattern: std::borrow::Cow<'_, str> = if term.bytes().any(|b| b.is_ascii_uppercase()) { + std::borrow::Cow::Owned(term.to_ascii_lowercase()) + } else { + std::borrow::Cow::Borrowed(*term) + }; + // The end of the last kept match, so a chain of touching occurrences + // (`abab…` for term `ab`) that starts inside the window and continues + // past it stays intact — `coalesce_overlapping` merges those, and the + // expansion step below is entitled to follow the merged range out. + let mut chain_end = 0usize; + for at in memchr::memmem::find_iter(folded.as_bytes(), pattern.as_bytes()) { + // Before any dropping: this is the occurrence count, and two + // occurrences that happen to abut are two hits for ranking even + // though they are one highlight for painting. + found += 1; + if bounded { + let bound = *keep_below.get_or_insert_with(|| { + let mut end = (at.saturating_sub(pre_pad) + opts.approx_chars).min(text.len()); + while end < text.len() && !text.is_char_boundary(end) { + end += 1; + } + end + }); + if at >= bound && at > chain_end { + // Past the edge and not chained to anything kept. Keep + // counting — that is the whole rest of the walk — but stop + // storing. + continue; + } + } + chain_end = at + pattern.len(); + matches.push((at, chain_end)); + } } if matches.is_empty() { - return head_window(text, opts.approx_chars); + return (head_window(text, opts.approx_chars), 0); } matches.sort_by_key(|(a, _)| *a); @@ -92,7 +159,6 @@ pub fn extract_folded(text: &str, folded: &str, terms: &[&str], opts: &Options) // Pick the window. Start a third of the budget before the first match // so the hit isn't pinned to the left edge; round both ends to char // boundaries so we never slice a multi-byte UTF-8 sequence. - let pre_pad = opts.approx_chars / 3; let mut win_start = matches[0].0.saturating_sub(pre_pad); let mut win_end = (win_start + opts.approx_chars).min(text.len()); while win_start > 0 && !text.is_char_boundary(win_start) { @@ -124,12 +190,15 @@ pub fn extract_folded(text: &str, folded: &str, terms: &[&str], opts: &Options) }) .collect(); - Snippet { - window: text[win_start..win_end].to_string(), - ranges, - truncated_start: win_start > 0, - truncated_end: win_end < text.len(), - } + ( + Snippet { + window: text[win_start..win_end].to_string(), + ranges, + truncated_start: win_start > 0, + truncated_end: win_end < text.len(), + }, + found, + ) } /// Clamp `range` into `text` and widen it to the nearest char boundaries. @@ -275,6 +344,12 @@ mod tests { /// Production always holds a fold buffer already, so the wrapper earned /// nothing; folding here keeps its coverage of the window logic. fn extract(text: &str, terms: &[&str], opts: &Options) -> Snippet { + extract_folded(text, &text.to_ascii_lowercase(), terms, opts).0 + } + + /// The occurrence count alongside the window — the half the full-text + /// pass consumes. + fn extract_counted(text: &str, terms: &[&str], opts: &Options) -> (Snippet, usize) { extract_folded(text, &text.to_ascii_lowercase(), terms, opts) } @@ -282,6 +357,88 @@ mod tests { Options { approx_chars: 40 } } + /// The count `extract_folded` hands back is what the full-text pass ranks + /// on, so it must be occurrences — not the highlights they coalesce into. + #[test] + fn extract_folded_counts_occurrences_not_ranges() { + let text = "abab and ab"; + let (s, n) = extract_counted(text, &["ab"], &opts_small()); + assert_eq!(n, 3, "three occurrences"); + assert_eq!( + n, + count_occurrences(text, "ab", true), + "must agree with the counter the pass used to call" + ); + assert_eq!(s.ranges.len(), 2, "the abutting pair paints as one range"); + } + + /// The pass takes `count_folded`'s answer from here now; anything that + /// made the two disagree would silently change which rows survive. + #[test] + fn extract_folded_count_agrees_with_count_occurrences() { + let cases: &[(&str, &str)] = &[ + ("no hits at all", "zzz"), + ("one hit here", "hit"), + ("Hit hit HIT", "hit"), + ("aaaa", "aa"), + ("", "x"), + ("short", "much longer than the haystack"), + ("ünïcode ünïcode", "ünïcode"), + ]; + for (text, term) in cases { + let folded = text.to_ascii_lowercase(); + let (_, n) = extract_folded(text, &folded, &[term], &opts_small()); + assert_eq!( + n, + count_occurrences(&folded, &term.to_ascii_lowercase(), true), + "count mismatch for {:?} in {:?}", + term, + text + ); + } + } + + /// An uppercase needle takes the owning branch of the fold; a needle that + /// is already folded takes the borrowing one. Both must find the same + /// matches, since the whole point of the borrow is that it changes + /// nothing but the allocation. + #[test] + fn extract_folded_needle_case_does_not_change_matches() { + let text = "The Needle and the needle"; + let folded = text.to_ascii_lowercase(); + let (upper, n_upper) = extract_folded(text, &folded, &["Needle"], &opts_small()); + let (lower, n_lower) = extract_folded(text, &folded, &["needle"], &opts_small()); + assert_eq!(n_upper, 2); + assert_eq!(n_upper, n_lower); + assert_eq!(upper.ranges, lower.ranges); + assert_eq!(upper.window, lower.window); + } + + /// A blank term is dropped rather than searched: an empty needle matches + /// at every byte offset, which would rank a document by its length. + #[test] + fn extract_folded_ignores_blank_terms() { + let text = "some text"; + let folded = text.to_ascii_lowercase(); + for term in ["", " ", "\t"] { + let (s, n) = extract_folded(text, &folded, &[term], &opts_small()); + assert_eq!(n, 0, "blank term {:?} counted", term); + assert!(s.ranges.is_empty(), "blank term {:?} highlighted", term); + } + } + + /// A term with surrounding space is searched as given. It used to be + /// trimmed, which counted and highlighted a different string than the + /// pattern's own counters did. + #[test] + fn extract_folded_does_not_trim_a_padded_term() { + let text = "needle needlework"; + let folded = text.to_ascii_lowercase(); + let (_, n) = extract_folded(text, &folded, &["needle "], &opts_small()); + assert_eq!(n, 1, "only the occurrence followed by a space"); + assert_eq!(n, count_occurrences(&folded, "needle ", true)); + } + /// Every range must be in-bounds, ordered, non-overlapping, and sit on /// char boundaries — the contract egui's LayoutJob sections rely on. fn assert_ranges_valid(s: &Snippet) { @@ -299,6 +456,83 @@ mod tests { s.ranges.iter().map(|&(a, b)| &s.window[a..b]).collect() } + /// Occurrences past the window's right edge are counted but not kept, and + /// that has to be invisible from the outside. + /// + /// The count is what the full-text pass ranks on, so it must still see the + /// whole body; the ranges are what gets painted, so they must still be + /// exactly the occurrences inside the window. A bound that leaked into + /// either would be a ranking change or a missing highlight. + #[test] + fn occurrences_past_the_window_are_counted_but_not_kept() { + // 400 occurrences, evenly spread, far more than a 40-byte window holds. + let unit = "needle filler filler "; + let text = unit.repeat(400); + let (snip, found) = extract_counted(&text, &["needle"], &opts_small()); + + assert_eq!(found, 400, "every occurrence must still be counted"); + assert_ranges_valid(&snip); + assert!(!snip.ranges.is_empty()); + assert!(snip.truncated_end, "there is a great deal more body"); + + // Every range is a real occurrence, and every occurrence that falls + // inside the window has a range. + for &(a, b) in &snip.ranges { + assert_eq!(&snip.window[a..b], "needle"); + } + let win_at = text.find(&snip.window).expect("the window is a slice of the text"); + let expected = memchr::memmem::find_iter(text.as_bytes(), b"needle") + .filter(|at| *at >= win_at && *at < win_at + snip.window.len()) + .count(); + assert_eq!( + snip.ranges.len(), + expected, + "every occurrence inside the window must be marked" + ); + } + + /// The case the chain rule exists for: touching occurrences coalesce into + /// one range, and a chain that starts inside the window can run past its + /// right edge. Dropping the moment the edge is crossed would cut the + /// highlight short. + #[test] + fn a_coalescing_chain_is_not_cut_at_the_window_edge() { + // One unbroken run of `ab`, far longer than the window. + let text = "ab".repeat(400); + let (snip, found) = extract_counted(&text, &["ab"], &opts_small()); + + assert_eq!(found, 400, "non-overlapping occurrences, all counted"); + assert_ranges_valid(&snip); + assert_eq!(snip.ranges.len(), 1, "one chain, one highlight"); + + // The load-bearing assertion, and it has to be about the window's + // *size*. The whole run coalesces into one range, and the expansion + // step then grows the window to cover it — so an unbroken chain + // legitimately produces a window the length of the text, not the + // 40-byte budget. Dropping the chain rule cuts the run at the budget + // and yields a 40-byte window instead, which asserting only + // "range == whole window" cannot tell apart, because both are. + assert_eq!( + snip.window.len(), + text.len(), + "the window must grow to cover the coalesced run" + ); + assert!(!snip.truncated_end, "nothing is left past a full-length window"); + assert_eq!(snip.ranges[0], (0, text.len()), "one highlight over the lot"); + } + + /// Several terms disable the bound, because two different terms can + /// coalesce across the edge and a per-term walk cannot see it. Pin that the + /// multi-term path still produces the full, correct answer. + #[test] + fn several_terms_still_coalesce_across_the_edge() { + let text = format!("{}{}", "x".repeat(10), "abc".repeat(200)); + let (snip, found) = extract_counted(&text, &["ab", "bc"], &opts_small()); + assert_eq!(found, 400, "200 of each term"); + assert_ranges_valid(&snip); + assert_eq!(snip.ranges.len(), 1, "the two terms interleave into one run"); + } + #[test] fn empty_text_returns_empty() { let s = extract("", &["foo"], &Options::default()); diff --git a/crates/quicksearch-core/src/textenc.rs b/crates/quicksearch-core/src/textenc.rs index 86b02cd..3cca9b1 100644 --- a/crates/quicksearch-core/src/textenc.rs +++ b/crates/quicksearch-core/src/textenc.rs @@ -44,6 +44,13 @@ //! as a FAILED row with a reason, the normal shape of head-based //! classification. +/// How much of a file the charset detector is shown. +/// +/// chardetng scores byte frequencies against a model per encoding; the answer +/// stops moving well inside this. Reading further is a second full pass over +/// the file for no change in the verdict. +const DETECT_PREFIX: usize = 64 * 1024; + use std::path::Path; enum TextClass { @@ -134,7 +141,14 @@ pub fn decode_text(bytes: Vec, path: &Path) -> Result { // ISO-2022-JP detection is safe here: the browser caveat about // it concerns script-running web content, not indexed files. let mut det = chardetng::EncodingDetector::new(chardetng::Iso2022JpDetection::Allow); - det.feed(&bytes, true); + // A prefix, not the whole file. The detector is scoring byte + // frequencies against per-encoding models, and those converge in + // kilobytes — feeding it a 200 MiB log costs a full extra pass + // over it to reach the same answer. `last` stays false because + // there may be more: it only tells the detector this is not the + // end of the input, which is exactly right for a prefix. + let prefix = &bytes[..bytes.len().min(DETECT_PREFIX)]; + det.feed(prefix, prefix.len() == bytes.len()); // Deny UTF-8: strict UTF-8 was already ruled out, so a UTF-8 // guess could only mean malformed UTF-8. let enc = det.guess(None, chardetng::Utf8Detection::Deny); @@ -240,6 +254,38 @@ mod tests { ); } + /// Detection reads a bounded prefix, so a file far larger than it still + /// decodes as the encoding its head implies — and the tail is decoded in + /// full regardless, since only the *detector*'s input is bounded. + #[test] + fn detection_prefix_is_bounded_and_the_tail_still_decodes() { + let head = b"Le caf\xe9 pr\xe8s de la fen\xeatre est agr\xe9able en \xe9t\xe9. "; + let mut body = Vec::new(); + while body.len() < DETECT_PREFIX * 3 { + body.extend_from_slice(head); + } + // A marker past the detector's window: it must survive the decode. + body.extend_from_slice(b"caf\xe9-tail-marker"); + let out = decode_text(body, &p()).unwrap(); + assert!( + out.ends_with("café-tail-marker"), + "the tail past the detection prefix must still be decoded" + ); + assert!(out.starts_with("Le café près"), "got {:?}", &out[..24]); + } + + /// The prefix bound must not change the verdict for a file smaller than + /// it — the whole buffer is still what the detector sees. + #[test] + fn detection_prefix_leaves_short_files_alone() { + let body = b"Le caf\xe9 pr\xe8s de la fen\xeatre est agr\xe9able en \xe9t\xe9.".to_vec(); + assert!(body.len() < DETECT_PREFIX); + assert_eq!( + decode_text(body, &p()).unwrap(), + "Le café près de la fenêtre est agréable en été." + ); + } + #[test] fn shift_jis_decodes_but_does_not_sniff() { // "日本語のテキストです。これはシフトJISでエンコードされています。" diff --git a/crates/quicksearch-core/src/watcher.rs b/crates/quicksearch-core/src/watcher.rs index 79cdfd0..6cd8598 100644 --- a/crates/quicksearch-core/src/watcher.rs +++ b/crates/quicksearch-core/src/watcher.rs @@ -622,8 +622,19 @@ fn watch_if_new_dir(ctx: &LoopCtx, path: &Path) { return; } // Files are reported through their parent's watch; only directories - // need one of their own. - if !path.is_dir() { + // need one of their own. `symlink_metadata` rather than `is_dir` so a + // symlink to a directory is judged as the link it is: when following is + // off the walk will not descend it, and watching it would spend + // descriptors reporting events for a subtree that is never indexed. When + // following is on it is a directory as far as everything else is + // concerned, so fall back to the followed answer. + let is_dir = match std::fs::symlink_metadata(path) { + Ok(md) if md.file_type().is_symlink() => ctx.filters.follow_symlinks && path.is_dir(), + Ok(md) => md.is_dir(), + // Raced with a delete, or unreadable: nothing to register. + Err(_) => return, + }; + if !is_dir { return; } if !is_event_interesting(ctx, path) { diff --git a/crates/quicksearch-core/src/watcher_tests.rs b/crates/quicksearch-core/src/watcher_tests.rs index 5614eca..7932403 100644 --- a/crates/quicksearch-core/src/watcher_tests.rs +++ b/crates/quicksearch-core/src/watcher_tests.rs @@ -585,3 +585,40 @@ fn a_created_ignored_directory_is_not_watched() { w.stop(); std::fs::remove_dir_all(&dir).ok(); } + +/// Registration must not follow a symlinked directory when the indexer will +/// not: every descriptor spent there reports events for a subtree that gets +/// discarded on arrival, and on Linux the watch budget is a shared kernel +/// resource. +#[test] +#[cfg(unix)] +fn a_symlinked_directory_is_not_registered_when_following_is_off() { + let dir = tmp_dir("symlink-reg"); + std::fs::create_dir_all(dir.join("real/nested")).unwrap(); + let outside = tmp_dir("symlink-reg-target"); + std::fs::create_dir_all(outside.join("deep")).unwrap(); + std::os::unix::fs::symlink(&outside, dir.join("link")).unwrap(); + + let w = Watcher::start( + std::iter::once(&dir), + default_filters(), + fast_config(), + sink_to_vec().0, + ) + .unwrap(); + + // root + real + real/nested. The link and everything under it cost + // nothing. + assert_eq!( + w.watched_dirs(), + if crate::platform::WATCH_ROOTS_RECURSIVELY { + 1 + } else { + 3 + }, + "the symlinked directory must not be registered" + ); + drop(w); + std::fs::remove_dir_all(&dir).ok(); + std::fs::remove_dir_all(&outside).ok(); +} diff --git a/crates/quicksearch-core/tests/cascade.rs b/crates/quicksearch-core/tests/cascade.rs index fb7937b..e51c632 100644 --- a/crates/quicksearch-core/tests/cascade.rs +++ b/crates/quicksearch-core/tests/cascade.rs @@ -564,6 +564,78 @@ fn limit_truncates_and_flags() { std::fs::remove_file(&p).ok(); } +/// Exactly `limit` results is a complete answer, not a cut one. +/// +/// `remaining()` reaches zero at the pass boundary either way, so the outer +/// loop used to set `limited` there on its way out — surfacing as the CLI's +/// "(truncated at N results; raise with --limit)" and the GUI's equivalent +/// over a result set that had dropped nothing. `flush_pass` is the authority: +/// it sets the flag when it actually truncates. +/// +/// Three under a limit of three is the case that isolates it: the first hit +/// flushes immediately, leaving room for two, and the pass ends with exactly +/// those two buffered — so nothing truncates, nothing breaks mid-scan, and +/// only the between-pass test could have raised the flag. See +/// [`filling_the_limit_mid_pass_still_reports_truncated`] for the boundary +/// this does not reach. +#[test] +fn exactly_the_limit_is_not_reported_as_truncated() { + let p = tmp_db("limit-exact"); + let mut s = Seeder::new(&p, true); + for i in 0..3 { + s.add(&format!("match-{:02}.txt", i), "/d", 1, None); + } + let conn = s.done(); + + let options = SearchOptions { + limit: 3, + ..SearchOptions::default() + }; + let (hits, outcome) = run_collect(&conn, "match", &options); + assert_eq!(hits.len(), 3); + assert_eq!(outcome.total, 3); + assert!( + !outcome.limited, + "3 matches under a limit of 3 dropped nothing" + ); + + drop(conn); + std::fs::remove_file(&p).ok(); +} + +/// The boundary the fix above deliberately does *not* cover, pinned so it is +/// a known shape rather than a surprise. +/// +/// A limit of one is filled by the first hit of the first pass — and the first +/// batch of a pass flushes the moment there is anything to send, so `total` +/// reaches the limit while the scan is still running. The scan then breaks +/// with rows unexamined, and `cut_short` reports that honestly as "there may +/// be more", which here there was not. Distinguishing the two costs a row +/// scanned past the limit in every pass that fills it — a document decompress, +/// fold and snippet on the full-text passes — which is not worth paying on +/// every keystroke to correct a message. +#[test] +fn filling_the_limit_mid_pass_still_reports_truncated() { + let p = tmp_db("limit-one"); + let mut s = Seeder::new(&p, true); + s.add("match.txt", "/d", 1, None); + let conn = s.done(); + + let options = SearchOptions { + limit: 1, + ..SearchOptions::default() + }; + let (hits, outcome) = run_collect(&conn, "match", &options); + assert_eq!(hits.len(), 1); + assert!( + outcome.limited, + "a scan that stopped with rows unexamined says so" + ); + + drop(conn); + std::fs::remove_file(&p).ok(); +} + /// Stopping at the limit must not cost a result that belongs in it. /// /// The scan breaks out as soon as the display limit is full, which is what @@ -838,6 +910,100 @@ fn wildcard_with_short_segments_falls_back_to_a_full_scan() { std::fs::remove_file(&p).ok(); } +/// The `LIKE` prefilter a straddling wildcard now gets must be a *superset* of +/// what the classifier accepts, or real hits vanish silently — the failure mode +/// with no symptom. Rather than assert a hand-written expected set, this seeds +/// rows that exercise every way a segment can sit across `parent || name` and +/// checks the prefiltered pass against the unfiltered one. +/// +/// The unfiltered side is obtained by asking for a pattern whose segments all +/// contain a separator, which is the arm that still scans — so both sides run +/// through the real cascade and no test-only code path is involved. +#[test] +fn a_wildcard_prefilter_never_loses_a_hit_the_full_scan_finds() { + let p = tmp_db("wildprefilter"); + let mut s = Seeder::new(&p, true); + // A segment wholly inside the name. + let in_name = s.add("report-q3.txt", "/data", 1, None); + // A segment wholly inside the parent. + let in_parent = s.add("a.bin", "/reports/q3", 2, None); + // The pattern's `%` spanning the parent/name boundary: `rep` is in the + // directory, `q3` in the file name. + let across = s.add("q3.txt", "/reports", 3, None); + // A name that only matches once case is folded. + let folded = s.add("REPORT-Q3.TXT", "/upper", 4, None); + // A near miss that must not be admitted by either path. + let _miss = s.add("summary.txt", "/data", 5, None); + // The trap the separator-free rule exists for: the only way to read this + // row as a match spans the boundary, and the spanning text contains the + // separator itself. + let boundary = s.add("q3.txt", "/x/rep", 6, None); + // The row that makes the separator-free rule load-bearing rather than + // decorative. Against `e/pq*txt` the longest segment is `e/pq`, which + // occurs in `parent || name` **only across the join** — `/a/re/` does not + // contain it and `pq.txt` does not either. Anchoring on it would drop this + // row, so the rule has to reject it and fall to `txt`. + let straddling = s.add("pq.txt", "/a/re", 7, None); + let conn = s.done(); + + let opts = SearchOptions::default(); + for query in ["rep*q3", "rep*rt", "*report*", "re*or*q3", "e/pq*txt"] { + let (hits, _) = run_collect(&conn, query, &opts); + let mut got: Vec = hits.iter().map(|h| h.file_id).collect(); + got.sort(); + + // The same query with every segment forced to carry a separator would + // change what matches, so the reference set is computed directly: a row + // is expected exactly when the compiled pattern matches its name or its + // full path, which is what the classifier tests. + let split = split_for_cascade(query).unwrap(); + let mut want: Vec = [ + (in_name, "/data/report-q3.txt"), + (in_parent, "/reports/q3/a.bin"), + (across, "/reports/q3.txt"), + (folded, "/upper/REPORT-Q3.TXT"), + (_miss, "/data/summary.txt"), + (boundary, "/x/rep/q3.txt"), + (straddling, "/a/re/pq.txt"), + ] + .iter() + .filter(|(_, path)| { + let name = path.rsplit('/').next().unwrap(); + split.pattern.find_first(name, true).is_some() + || split.pattern.find_first(path, true).is_some() + }) + .map(|(id, _)| *id) + .collect(); + want.sort(); + + assert_eq!(got, want, "query {:?}", query); + } + + drop(conn); + std::fs::remove_file(&p).ok(); +} + +/// A pattern every segment of which carries a separator has nothing to anchor +/// on, so the pass falls back to scanning — and must still find its hits. +#[test] +fn a_wildcard_with_only_separator_segments_still_scans_and_matches() { + let p = tmp_db("wildnoanchor"); + let mut s = Seeder::new(&p, true); + let hit = s.add("q3.txt", "/a/reports", 1, None); + let _miss = s.add("q3.txt", "/a/summaries", 2, None); + let conn = s.done(); + + // Segments are "a/rep" and "rts/" — both contain a separator. + let (hits, _) = run_collect(&conn, "a/rep*rts/", &SearchOptions::default()); + assert_eq!( + hits.iter().map(|h| h.file_id).collect::>(), + vec![hit] + ); + + drop(conn); + std::fs::remove_file(&p).ok(); +} + #[test] fn wildcard_path_tier_and_filters() { let p = tmp_db("wildpath"); diff --git a/crates/quicksearch-core/tests/common/mod.rs b/crates/quicksearch-core/tests/common/mod.rs index fe1b78b..4d62d41 100644 --- a/crates/quicksearch-core/tests/common/mod.rs +++ b/crates/quicksearch-core/tests/common/mod.rs @@ -21,6 +21,194 @@ pub fn scratch_db(tag: &str) -> std::path::PathBuf { scratch_dir(tag).join("index.sqlite") } +/// Deterministic pseudo-random word picker — the same LCG and constants +/// `benches/corpus`, `examples/indexprobe` and `tests/search_perf` use, for the +/// same reason: a fixed seed is what makes two runs comparable, so a number +/// that moved is a real change rather than a different corpus. +pub struct Lcg(pub u64); + +impl Lcg { + pub fn new(seed: u64) -> Lcg { + Lcg(seed) + } + + pub fn next(&mut self) -> u64 { + self.0 = self.0.wrapping_mul(6364136223846793005).wrapping_add(1); + self.0 >> 33 + } +} + +/// The rare term a seeded index is searched for. +/// +/// Nine bytes — long enough to clear the trigram floor, and exactly +/// `3 × (2 + 1)`, so it sits on the boundary where a `fuzzy_max_edits = 2` +/// pigeonhole split into three-character chunks becomes legal. +pub const NEEDLE: &str = "quartzite"; + +/// A term planted only in document *bodies*, never in a file name. +/// +/// The needle above reaches the index through both, so a query for it is +/// answered mostly by the filename pass. This one forces the full-text pass to +/// do real work: the filename `LIKE` finds nothing, and every candidate the +/// trigram index returns has to be decompressed and verified. +pub const BODY_TERM: &str = "chalcedony"; + +/// Filler vocabulary for seeded indexes. +/// +/// **Deliberately shares no trigram with [`NEEDLE`]** — no filler word contains +/// so much as `qua`. That is what makes a needle query genuinely rare, and it +/// matters more than it looks: with a vocabulary that merely *resembled* the +/// needle, every query would fill the display limit within the first few +/// hundred rows, the cascade would break out of pass A, and passes B, C and D +/// would never run at all. A harness built that way reports the same figure for +/// a literal and a fuzzy search and looks perfectly healthy doing it. +pub const WORDS: &[&str] = &[ + "alpha", + "beta", + "gamma", + "delta", + "epsilon", + "zeta", + "eta", + "theta", + "iota", + "kappa", + "lambda", + "brown", + "fox", + "jumps", + "lazy", + "index", + "search", + "cascade", + "snippet", + "document", + "content", + "extract", + "summary", + "meeting", + "invoice", + "contract", + "budget", + "revenue", + "planning", + "review", + "draft", + "final", + "notes", + "appendix", + "figure", +]; + +/// What [`seed_index`] should build. +pub struct SeedSpec { + pub files: usize, + /// One file in every `content_every` gets extracted text. A tenth is the + /// real shape — most files in a tree are not text — and it keeps the FTS + /// index smaller than the table, as it is in practice. + pub content_every: usize, + /// Words in each stored document body. + pub body_words: usize, + /// Directories to spread the rows across, so `files.parent` has real + /// variety and `idx_files_parent` has interior levels. + pub dirs: usize, + /// File names carrying [`NEEDLE`]. Kept far below any sane display limit so + /// a needle query never fills it — an early-exiting query measures how fast + /// the cascade gives up, not how fast it scans. + pub needle_names: usize, + /// Document bodies carrying [`NEEDLE`], on top of the names. + pub needle_docs: usize, + /// Document bodies carrying [`BODY_TERM`]. Sized by the caller to stay + /// under the display limit, or the pass stops early and measures the + /// give-up rather than the verification. + pub body_term_docs: usize, +} + +impl Default for SeedSpec { + fn default() -> SeedSpec { + SeedSpec { + files: 50_000, + content_every: 10, + // ~2 KB of text per document. Not arbitrary: the fuzzy full-text + // pass decompresses and scans every stored body, so a corpus of + // 400-byte documents makes that pass look free when in production + // it is the most expensive thing the cascade does. Still far under + // `maximum_text_size` (256 KiB), which is the real worst case. + body_words: 300, + dirs: 500, + needle_names: 50, + needle_docs: 50, + body_term_docs: 500, + } + } +} + +/// Seed an index with synthetic rows, in one transaction. +/// +/// Shared by the measurement harnesses so they all describe the same corpus; +/// what varies between them is the size, not the shape. +pub fn seed_index(path: &Path, spec: &SeedSpec) { + use quicksearch_core::db::repo::{insert_file, set_content_done, NewFile}; + use quicksearch_core::mime::FileType; + use quicksearch_core::testutil::zstd_of; + + let mut conn = db::open_or_recreate(path.to_str().unwrap(), "trigram").unwrap(); + let mut rng = Lcg::new(0x5eed); + // Spacing rather than a random draw, so the planted rows are spread across + // the table instead of clustering in whatever prefix the scan reaches + // first — a cluster at the front would let a pass stop early and report a + // fraction of the work a real rare query costs. + let name_stride = spec.files / spec.needle_names.max(1); + let doc_stride = spec.files / spec.needle_docs.max(1); + let body_stride = spec.files / spec.body_term_docs.max(1); + let tx = conn.transaction().unwrap(); + for i in 0..spec.files { + let w1 = WORDS[(rng.next() as usize) % WORDS.len()]; + let w2 = WORDS[(rng.next() as usize) % WORDS.len()]; + let name = if spec.needle_names > 0 && i % name_stride.max(1) == 0 { + format!("{}-{}-{:07}.txt", w1, NEEDLE, i) + } else { + format!("{}-{}-{:07}.txt", w1, w2, i) + }; + // Stored parents always end in a separator; see `dir_to_db_parent`. + let dir = format!("/seed/{:03}/", i % spec.dirs.max(1)); + let id = insert_file( + &tx, + &NewFile { + name: &name, + parent: &dir, + size: 4096, + mtime: 1_700_000_000 + i as u64, + mime: Some("text/plain"), + ftype: FileType::TEXT, + hash: None, + needs_content: i % spec.content_every.max(1) == 0, + }, + ) + .unwrap() + .expect("unique path"); + if i % spec.content_every.max(1) == 0 { + let mut body: Vec<&str> = (0..spec.body_words) + .map(|_| WORDS[(rng.next() as usize) % WORDS.len()]) + .collect(); + if spec.needle_docs > 0 && i % doc_stride.max(1) == 0 { + // Mid-body, so a snippet window has to be cut around it rather + // than falling out of a head-of-file window for free. + body[spec.body_words / 2] = NEEDLE; + } + if spec.body_term_docs > 0 && i % body_stride.max(1) == 0 { + // Two thirds in, so verifying it means scanning most of the + // document rather than stopping at the first few bytes. + body[spec.body_words * 2 / 3] = BODY_TERM; + } + let body = body.join(" "); + set_content_done(&tx, id, &body, zstd_of(&body).as_deref()).unwrap(); + } + } + tx.commit().unwrap(); + conn.execute_batch("PRAGMA wal_checkpoint(TRUNCATE);").ok(); +} + /// How long a single indexing run may take before the test gives up. Generous: /// CI runs these in a container against a cold page cache. const INDEX_TIMEOUT: Duration = Duration::from_secs(120); diff --git a/crates/quicksearch-core/tests/corpus/audio.rs b/crates/quicksearch-core/tests/corpus/audio.rs new file mode 100644 index 0000000..28f89b2 --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/audio.rs @@ -0,0 +1,130 @@ +//! The audio corpus files: `.mp3` and `.flac`. +//! +//! Audio is the one format family whose "text" is not a document body but a +//! handful of tag values, so its expectation is the five fields +//! `extract::audio` concatenates, in the order it concatenates them: title, +//! artist, album, genre, comment. Getting that order wrong is a real +//! regression — the stored text would churn between runs — so the ordered +//! match is doing load-bearing work here rather than just tolerating +//! boilerplate. +//! +//! `id3` and `metaflac` write the tags; `lofty` reads them. The audio data +//! underneath is hand-rolled, since neither crate synthesises any. + +use std::path::Path; + +use super::{BodyFn, Charset, Lcg, Sample}; + +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + mp3(dir, lcg, body, out); + flac(dir, lcg, body, out); +} + +/// The five tag values, in `extract::audio`'s emit order. +/// +/// Sentence 1 carries the needle, 2 the Latin-1 phrase and 3 the Greek, so +/// this spread also puts non-ASCII into two different tag frames — which is +/// what forces the writers off ISO-8859-1 and into a wide encoding. +fn fields(sentences: &[String]) -> [&str; 5] { + [ + &sentences[0], + &sentences[1], + &sentences[2], + &sentences[3], + &sentences[4], + ] +} + +/// Four silent MPEG-1 Layer III frames: 128 kbps, 44.1 kHz, no padding, so +/// each is 417 bytes. Four because a probe confirms a sync word by checking +/// that the next frame begins where the first one said it would. +fn mpeg_frames() -> Vec { + let mut out = Vec::with_capacity(4 * 417); + for _ in 0..4 { + out.extend_from_slice(&[0xFF, 0xFB, 0x90, 0x00]); + out.resize(out.len() + 413, 0); + } + out +} + +fn mp3(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + use id3::{TagLike, Version}; + + let b = body(lcg, Charset::Unicode); + let [title, artist, album, genre, comment] = fields(&b.sentences); + + let path = super::write_file(dir, "track.mp3", &mpeg_frames()); + + let mut tag = id3::Tag::new(); + tag.set_title(title); + tag.set_artist(artist); + tag.set_album(album); + tag.set_genre(genre); + tag.add_frame(id3::frame::Comment { + lang: "eng".to_string(), + description: String::new(), + text: comment.to_string(), + }); + tag.write_to_path(&path, Version::Id3v23) + .expect("write id3 tag"); + + out.push(Sample { + path, + label: "mp3", + must_contain: fields(&b.sentences).iter().map(|s| s.to_string()).collect(), + needle: b.needle.clone(), + head_path: false, + }); +} + +/// Fifty milliseconds of silence, committed at `tests/fixtures/silence.flac`. +/// +/// Unlike MPEG — whose frames are a fixed-size header plus zeroes, cheap +/// enough to hand-roll — a FLAC frame carries CRC-8 and CRC-16 over +/// bit-packed subframes, and `lofty` reads the first one to derive the +/// stream's properties. A metadata-only file is rejected outright with +/// "failed to fill whole buffer". +/// +/// So the *audio* is committed and the *tags* are still written per run: the +/// fixture carries no text at all, `metaflac` puts the seeded lipsum into it, +/// and `lofty` is still reading something a different library wrote. Produced +/// once with: +/// +/// ```text +/// ffmpeg -f lavfi -i anullsrc=r=44100:cl=mono -t 0.05 \ +/// -sample_fmt s16 -c:a flac -compression_level 12 silence.flac +/// ``` +fn silence() -> std::path::PathBuf { + Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures/silence.flac") +} + +fn flac(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Unicode); + let [title, artist, album, genre, comment] = fields(&b.sentences); + + let path = dir.join("track.flac"); + std::fs::copy(silence(), &path).unwrap_or_else(|e| { + panic!( + "copy {} -> {}: {e}\n(committed fixture; see the doc comment on `silence`)", + silence().display(), + path.display() + ) + }); + + let mut tag = metaflac::Tag::read_from_path(&path).expect("read flac metadata"); + let comments = tag.vorbis_comments_mut(); + comments.set_title(vec![title]); + comments.set_artist(vec![artist]); + comments.set_album(vec![album]); + comments.set_genre(vec![genre]); + comments.set("COMMENT", vec![comment]); + tag.save().expect("write flac tags"); + + out.push(Sample { + path, + label: "flac", + must_contain: fields(&b.sentences).iter().map(|s| s.to_string()).collect(), + needle: b.needle.clone(), + head_path: false, + }); +} diff --git a/crates/quicksearch-core/tests/corpus/legacy.rs b/crates/quicksearch-core/tests/corpus/legacy.rs new file mode 100644 index 0000000..ca1a747 --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/legacy.rs @@ -0,0 +1,142 @@ +//! The committed `.doc` / `.xls` / `.ppt` fixtures. +//! +//! These three are the corpus's one departure from generate-on-the-fly, and +//! the reason is narrow: `cfb` is the only Rust crate that writes OLE2 +//! compound files, and `cfb` is what `extract::ole` reads them with. A fixture +//! built by the reader's own library proves only that the two agree with each +//! other. So LibreOffice writes them, once, and the output is committed — +//! see `tests/fixtures/legacy/regen.sh`. +//! +//! Two consequences worth being explicit about: +//! +//! * **Their text is fixed, not seeded.** `QUICKSEARCH_CORPUS_SEED` shakes the +//! generated half of the corpus and leaves these alone. +//! * **The expectations are read out of the committed sources**, not written +//! out here a second time. A regenerated fixture that lost a line therefore +//! fails, instead of quietly redefining what it was supposed to contain. +//! +//! What the fixtures prove that a synthetic file cannot: LibreOffice's `.doc` +//! is a real FIB with a real piece table, its `.xls` a real BIFF stream with a +//! real shared-string table, and its `.ppt` drags the master slide's +//! placeholder prompts ("Click to edit the title text format", `___PPT10`) +//! into the text alongside the content. That last one is exactly why +//! [`super::match_in_order`] asserts containment rather than equality. + +use std::path::{Path, PathBuf}; + +use super::Sample; + +/// The directory the fixtures live in, resolved against the crate root so the +/// test does not care what the working directory is. +pub fn dir() -> PathBuf { + Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures/legacy") +} + +fn read(name: &str) -> String { + let path = dir().join(name); + std::fs::read_to_string(&path).unwrap_or_else(|e| { + panic!( + "read {}: {e}\n(fixtures are committed; regenerate with regen.sh)", + path.display() + ) + }) +} + +/// Non-empty, trimmed lines — the expectation for the line-per-record sources. +fn lines(source: &str) -> Vec { + source + .lines() + .map(str::trim) + .filter(|l| !l.is_empty()) + .map(str::to_string) + .collect() +} + +/// The text of every `` in the flat-ODF deck, in document order. +/// +/// A three-line hand parse rather than `quick-xml`, which is the reader's +/// library: the source is committed, its shape is fixed, and reaching for the +/// parser under test to compute the expectation would defeat the point. +fn paragraphs(source: &str) -> Vec { + let mut out = Vec::new(); + let mut rest = source; + while let Some(start) = rest.find("") { + rest = &rest[start + "".len()..]; + let Some(end) = rest.find("") else { + break; + }; + out.push(rest[..end].to_string()); + rest = &rest[end..]; + } + out +} + +/// The needle planted in each source. Fixed rather than derived, and well +/// clear of the generated corpus's `chalcedony0000`-`chalcedony00NN` range — +/// under the trigram tokenizer "distinct" means "not a substring of another". +const NEEDLES: [(&str, &str); 3] = [ + ("sample.doc", "chalcedony9001"), + ("sample.xls", "chalcedony9002"), + ("sample.ppt", "chalcedony9003"), +]; + +/// The three fixtures as corpus samples. +pub fn samples() -> Vec { + let expectations = [ + ("sample.doc", "doc", lines(&read("prose.txt"))), + ("sample.xls", "xls", lines(&read("sheet.csv"))), + ("sample.ppt", "ppt", paragraphs(&read("deck.fodp"))), + ]; + + expectations + .into_iter() + .map(|(file, label, must_contain)| { + let needle = NEEDLES + .iter() + .find(|(f, _)| *f == file) + .expect("every fixture has a needle") + .1; + assert!( + must_contain.iter().any(|f| f.contains(needle)), + "{file}: source no longer carries {needle}; \ + the end-to-end search would not be attributable" + ); + Sample { + path: dir().join(file), + label, + must_contain, + needle: needle.to_string(), + // OLE2 reads a directory that can sit anywhere in the file, so + // this format never takes the walk-time buffer path. + head_path: false, + } + }) + .collect() +} + +/// Copy the fixtures into `dir` so the end-to-end run indexes them alongside +/// the generated corpus. Returns the samples with their paths rewritten to the +/// copies. +/// +/// Copied rather than indexed in place: the indexer walks a directory tree, +/// and pointing it at the repository would pull in whatever else lives there. +pub fn copy_into(dir: &Path) -> Vec { + samples() + .into_iter() + .map(|sample| { + let name = sample.path.file_name().expect("fixture has a name"); + let target = dir.join(name); + std::fs::copy(&sample.path, &target).unwrap_or_else(|e| { + panic!( + "copy {} -> {}: {e}", + sample.path.display(), + target.display() + ) + }); + Sample { + path: target, + ..sample + } + }) + .collect() +} diff --git a/crates/quicksearch-core/tests/corpus/mod.rs b/crates/quicksearch-core/tests/corpus/mod.rs new file mode 100644 index 0000000..78b7b7e --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/mod.rs @@ -0,0 +1,338 @@ +//! A lipsum corpus in every format QuickSearch claims to extract text from. +//! +//! # Why this exists +//! +//! The per-extractor unit tests in `src/extract/` build their fixtures with +//! the same libraries that read them back — `zip` 0.6 for the OOXML/ODF +//! containers, `cfb` for OLE2, `lopdf` (through `pdf-extract`) for PDF. That +//! is the right choice there, because those tests aim at *malformed* input and +//! need to control every byte. But it means a writer and a reader that share a +//! wrong assumption agree with each other and the test passes. +//! +//! This module is the other half: well-formed documents from *foreign* +//! producers. Every writer here is a different implementation from the reader +//! it feeds — +//! +//! | format | written by | read by | +//! |---|---|---| +//! | docx | `docx-rs` (+ `zip` 8.x) | `zip` 0.6 + `quick-xml` | +//! | xlsx | `rust_xlsxwriter` | `zip` 0.6 + `quick-xml` | +//! | pptx, odt, ods, odp | [`zipwriter`] + `format!` | `zip` 0.6 + `quick-xml` | +//! | pdf | `pdf-writer` (typst) | `pdf-extract`/`lopdf` | +//! | mp3 | `id3` over hand-rolled MPEG frames | `lofty` | +//! | flac | `metaflac` over a committed silent stream | `lofty` | +//! | rtf | hand-written control words | `rtf-parser` | +//! | plain text | `std`, plus a hand-rolled cp1252 encoder | `encoding_rs` | +//! | doc, xls, ppt | LibreOffice, committed — see [`legacy`] | `cfb` | +//! +//! Two places take committed bytes, for two different reasons, and in both the +//! *text* still comes from the generator: +//! +//! * The three legacy binaries are what nothing in Rust can fix: `cfb` is the +//! only crate that writes OLE2 compound files, and it is the reader. Those +//! are LibreOffice's output, and they are also the one part of the corpus +//! whose text is fixed rather than seeded — see +//! `tests/fixtures/legacy/README.md`. +//! * The `.flac` borrows fifty milliseconds of committed silence because +//! `lofty` reads a real audio frame to derive stream properties. The fixture +//! carries no text; `metaflac` writes the seeded lipsum into a copy of it. +//! See [`audio`]. +//! +//! # Determinism +//! +//! Everything on-the-fly is generated from one LCG seeded by [`seed`], which +//! is [`DEFAULT_SEED`] unless `QUICKSEARCH_CORPUS_SEED` says otherwise. A +//! failing assertion prints the seed it ran with, so a red CI job reproduces +//! locally with one environment variable. + +// Only `extraction_corpus.rs` compiles this, and it uses most but not all of +// it; the writers each expose a little more surface than any one test needs. +#![allow(dead_code)] + +use std::path::{Path, PathBuf}; + +pub mod audio; +pub mod legacy; +pub mod odf; +pub mod ooxml; +pub mod pdf; +pub mod plaintext; +pub mod rtf; +pub mod zipwriter; + +/// The seed used when the environment says nothing. Arbitrary; what matters +/// is that it does not change between runs. +pub const DEFAULT_SEED: u64 = 0x9E37_79B9_7F4A_7C15; + +/// The active seed. Override with `QUICKSEARCH_CORPUS_SEED=` to shake the +/// corpus without editing anything. +pub fn seed() -> u64 { + match std::env::var("QUICKSEARCH_CORPUS_SEED") { + Ok(v) => v + .trim() + .parse() + .unwrap_or_else(|_| panic!("QUICKSEARCH_CORPUS_SEED must be a u64, got {v:?}")), + Err(_) => DEFAULT_SEED, + } +} + +/// The same LCG `benches/corpus/mod.rs` uses. Copied rather than shared: +/// `benches/` is not reachable from `tests/`, and the bench corpus is +/// deliberately frozen so its numbers stay comparable across runs. +pub struct Lcg(u64); + +impl Lcg { + pub fn new(seed: u64) -> Lcg { + Lcg(seed) + } + + pub fn next(&mut self) -> u64 { + self.0 = self.0.wrapping_mul(6364136223846793005).wrapping_add(1); + self.0 >> 33 + } + + fn pick<'a, T>(&mut self, from: &'a [T]) -> &'a T { + &from[self.next() as usize % from.len()] + } +} + +/// Filler vocabulary. Plain ASCII lowercase so it survives every encoding in +/// the corpus unchanged, and long enough that a sentence drawn from it is +/// effectively unique. +const WORDS: &[&str] = &[ + "lorem", + "ipsum", + "dolor", + "consectetur", + "adipiscing", + "eiusmod", + "tempor", + "incididunt", + "labore", + "dolore", + "aliqua", + "veniam", + "nostrud", + "exercitation", + "ullamco", + "laboris", + "commodo", + "consequat", + "voluptate", + "cillum", + "occaecat", + "cupidatat", + "proident", + "officia", + "deserunt", + "mollit", + "laborum", +]; + +/// A phrase every format can carry: Latin-1 representable, so it survives +/// cp1252 and the base-14 WinAnsi font the PDF writer uses. +const LATIN1_PHRASE: &str = "café résumé naïve"; + +/// A phrase only formats with a Unicode text model can carry. +const UNICODE_PHRASE: &str = "Καλημέρα κόσμε"; + +/// What characters a format's *writer* can round-trip. Gates the non-ASCII +/// coverage so the corpus is neither lax (ASCII everywhere) nor wrong +/// (demanding Greek from a WinAnsi font). +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum Charset { + /// 7-bit only. + Ascii, + /// Adds [`LATIN1_PHRASE`]. + Latin1, + /// Adds [`UNICODE_PHRASE`] on top. + Unicode, +} + +/// How many sentences every generated document carries. +const SENTENCES: usize = 6; + +/// Words per sentence. +const WORDS_PER_SENTENCE: usize = 7; + +/// The lipsum planted in one file, plus the token that identifies it. +/// +/// Sentences are the unit of assertion for every format: prose formats write +/// one per paragraph, spreadsheets one per cell, decks one per shape. Keeping +/// the granularity identical everywhere is what lets a single `must_contain` +/// list describe them all. +pub struct Body { + pub sentences: Vec, + /// Unique to this file, planted in sentence 1 and never in the file name, + /// so an end-to-end search hit is attributable to the body text. + pub needle: String, +} + +/// What every needle starts with. +/// +/// The same word as `common::BODY_TERM`, and for the same reason that constant +/// exists: a term that reaches the index only through a document body and +/// never through a file name, so a hit for it is attributable to extraction. +/// This module stays self-contained rather than naming `common` — it has no +/// other reason to depend on the shared harness — so +/// `corpus_needles_use_the_shared_body_term` in `extraction_corpus.rs` is what +/// keeps the two from drifting. +pub const NEEDLE_PREFIX: &str = "chalcedony"; + +impl Body { + /// Build a body for `index`-th file, carrying whatever `charset` allows. + /// + /// The needle is derived from the index alone, not from the LCG: it has to + /// stay distinct from every other file's under any seed, and under the + /// trigram tokenizer "distinct" means "not a substring of another". + pub fn new(lcg: &mut Lcg, index: usize, charset: Charset) -> Body { + let needle = format!("{NEEDLE_PREFIX}{index:04}"); + let mut sentences = Vec::with_capacity(SENTENCES); + for i in 0..SENTENCES { + let mut words: Vec = (0..WORDS_PER_SENTENCE) + .map(|_| lcg.pick(WORDS).to_string()) + .collect(); + // One planted item per sentence, at a fixed position so a + // reordering bug shows up as a failed match rather than a pass. + match i { + 1 => words.insert(0, needle.clone()), + 2 if charset != Charset::Ascii => words.insert(3, LATIN1_PHRASE.to_string()), + 3 if charset == Charset::Unicode => words.insert(3, UNICODE_PHRASE.to_string()), + _ => {} + } + sentences.push(words.join(" ")); + } + Body { sentences, needle } + } +} + +/// One corpus file plus what its extracted text must contain. +pub struct Sample { + pub path: PathBuf, + /// A label for assertion messages — the format, not the file name. + pub label: &'static str, + /// Fragments that must appear in the extracted text, in this order, with + /// anything permitted between them. + /// + /// Ordered containment, not equality, and not set membership. Equality is + /// unusable: LibreOffice's `.ppt` filter drags master-slide boilerplate + /// ("Click to edit the title text format", "___PPT10") into the text + /// stream, and every spreadsheet reader puts its cell separators + /// somewhere slightly different. Set membership is too weak: text + /// assembled out of order is exactly what a mis-read Word piece table + /// produces, and that has to fail. + pub must_contain: Vec, + /// Planted in the body and absent from the file name. + pub needle: String, + /// Whether this format implements `Extractor::extract_from_head` — i.e. + /// whether the walk may extract it without reopening the file. Only + /// plaintext and RTF do. + pub head_path: bool, +} + +impl Sample { + /// The prose case, where the sentences *are* the expectation. + fn prose(path: PathBuf, label: &'static str, body: &Body, head_path: bool) -> Sample { + Sample { + path, + label, + must_contain: body.sentences.clone(), + needle: body.needle.clone(), + head_path, + } + } +} + +/// Where `fragments` stop matching `text` as an ordered subsequence. +/// +/// `Ok(())` when every fragment is found in turn. `Err` names the first one +/// that is not, which is the only diagnostic worth printing: "the text does +/// not contain X" plus where the scan had got to. +pub fn match_in_order(text: &str, fragments: &[String]) -> Result<(), String> { + let mut cursor = 0usize; + for (i, fragment) in fragments.iter().enumerate() { + match text[cursor..].find(fragment.as_str()) { + Some(at) => cursor += at + fragment.len(), + None => { + let seen = &text[..cursor.min(text.len())]; + let rest = &text[cursor.min(text.len())..]; + return Err(format!( + "fragment {i} not found after byte {cursor}\n \ + wanted: {fragment:?}\n \ + matched so far (tail): {:?}\n \ + remaining text (head): {:?}", + tail(seen, 120), + head(rest, 400), + )); + } + } + } + Ok(()) +} + +/// First `n` characters of `s`, for an error message. +fn head(s: &str, n: usize) -> String { + s.chars().take(n).collect() +} + +/// Last `n` characters of `s`, for an error message. +fn tail(s: &str, n: usize) -> String { + let count = s.chars().count(); + s.chars().skip(count.saturating_sub(n)).collect() +} + +/// Build the whole corpus into one directory and return it with its samples. +/// +/// The directory is a `testutil::scratch_dir`, so it survives a failing run +/// for inspection and is swept on a later day like every other test's tree. +pub fn build(tag: &str) -> (PathBuf, Vec) { + let dir = quicksearch_core::testutil::scratch_dir(tag); + let mut lcg = Lcg::new(seed()); + let mut samples = Vec::new(); + let mut next = 0usize; + let mut body = |lcg: &mut Lcg, charset: Charset| { + let b = Body::new(lcg, next, charset); + next += 1; + b + }; + + plaintext::write_all(&dir, &mut lcg, &mut body, &mut samples); + rtf::write_all(&dir, &mut lcg, &mut body, &mut samples); + ooxml::write_all(&dir, &mut lcg, &mut body, &mut samples); + odf::write_all(&dir, &mut lcg, &mut body, &mut samples); + pdf::write_all(&dir, &mut lcg, &mut body, &mut samples); + audio::write_all(&dir, &mut lcg, &mut body, &mut samples); + // The committed OLE2 fixtures, copied in so the whole corpus is one tree. + samples.extend(legacy::copy_into(&dir)); + + // Every needle has to identify exactly one file, or the end-to-end search + // proves nothing. Under the trigram tokenizer that means no needle may be + // a substring of another, which a bad `Body::new` index would produce + // silently. + for (i, a) in samples.iter().enumerate() { + for b in samples.iter().skip(i + 1) { + assert!( + !a.needle.contains(&b.needle) && !b.needle.contains(&a.needle), + "needles {:?} ({}) and {:?} ({}) are not distinguishable", + a.needle, + a.label, + b.needle, + b.label + ); + } + } + + (dir, samples) +} + +/// The signature the per-format writers take for "give me a fresh body". +/// A closure rather than a method so the file index keeps counting across +/// modules and every needle in the corpus stays unique. +pub type BodyFn<'a> = dyn FnMut(&mut Lcg, Charset) -> Body + 'a; + +/// Write `bytes` to `dir/name` and return the path. +pub fn write_file(dir: &Path, name: &str, bytes: &[u8]) -> PathBuf { + let path = dir.join(name); + std::fs::write(&path, bytes).unwrap_or_else(|e| panic!("write {}: {e}", path.display())); + path +} diff --git a/crates/quicksearch-core/tests/corpus/odf.rs b/crates/quicksearch-core/tests/corpus/odf.rs new file mode 100644 index 0000000..60164c8 --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/odf.rs @@ -0,0 +1,150 @@ +//! The three OpenDocument corpus files: `.odt`, `.ods`, `.odp`. +//! +//! No Rust crate writes ODF, so these are assembled from +//! [`super::zipwriter`] and `format!` — independent of the `zip` 0.6 and +//! `quick-xml` the reader uses. +//! +//! The `mimetype` member comes first and uncompressed, as the ODF packaging +//! spec requires and as LibreOffice writes it. `extract::office` locates +//! `content.xml` by name and never looks at it, but a package that violates +//! the spec is not the thing the corpus is supposed to be testing against. + +use std::path::Path; + +use super::zipwriter::{self, xml_escape, Entry}; +use super::{BodyFn, Charset, Lcg, Sample}; + +/// Namespace declarations shared by all three documents. Only `office` and +/// `text` are load-bearing for extraction; `table` is needed for the +/// spreadsheet's grid. +const NS: &str = "xmlns:office=\"urn:oasis:names:tc:opendocument:xmlns:office:1.0\" \ + xmlns:text=\"urn:oasis:names:tc:opendocument:xmlns:text:1.0\" \ + xmlns:table=\"urn:oasis:names:tc:opendocument:xmlns:table:1.0\" \ + xmlns:draw=\"urn:oasis:names:tc:opendocument:xmlns:drawing:1.0\" \ + office:version=\"1.3\""; + +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + odt(dir, lcg, body, out); + ods(dir, lcg, body, out); + odp(dir, lcg, body, out); +} + +/// Package `content.xml` as an ODF container with the right `mimetype`. +fn package(dir: &Path, name: &str, mime: &str, content: &str) -> std::path::PathBuf { + let entries = [ + Entry { + name: "mimetype", + body: mime.as_bytes(), + }, + Entry { + name: "content.xml", + body: content.as_bytes(), + }, + ]; + super::write_file(dir, name, &zipwriter::archive(&entries)) +} + +/// Prose, alternating `` and `` and wrapping one sentence in a +/// ``. +/// +/// The span is the interesting case: `ODF_TEXT` lists `text:span` as +/// text-bearing but *not* paragraph-breaking, and the reader counts open +/// text elements rather than flagging them. A span nested in a paragraph is +/// what distinguishes those two behaviours. +fn odt(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Unicode); + let mut xml = String::new(); + for (i, sentence) in b.sentences.iter().enumerate() { + let escaped = xml_escape(sentence); + match i % 3 { + 0 => xml.push_str(&format!( + "{escaped}" + )), + 1 => xml.push_str(&format!("{escaped}")), + _ => xml.push_str(&format!( + "{escaped}" + )), + } + } + let content = format!( + "\ + {xml}\ + " + ); + let path = package( + dir, + "prose.odt", + "application/vnd.oasis.opendocument.text", + &content, + ); + out.push(Sample::prose(path, "odt", &b, false)); +} + +/// One sentence per cell, one cell per row — the same shape as the `.xlsx`, +/// read by `ODF_SHEET` with its `Some(' ')` cell separator. +fn ods(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Unicode); + let rows: String = b + .sentences + .iter() + .map(|s| { + format!( + "\ + {}", + xml_escape(s) + ) + }) + .collect(); + let content = format!( + "\ + \ + {rows}\ + " + ); + let path = package( + dir, + "sheet.ods", + "application/vnd.oasis.opendocument.spreadsheet", + &content, + ); + out.push(Sample::prose(path, "ods", &b, false)); +} + +/// Sentences across two ``s, in text boxes — the shape LibreOffice +/// writes and the shape `ODF_TEXT` reads, since `.odp` and `.odt` share a spec. +fn odp(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + const PAGES: usize = 2; + let b = body(lcg, Charset::Unicode); + let mut xml = String::new(); + // Contiguous halves rather than round-robin: the reader concatenates + // pages in document order, so this keeps the expectation equal to + // `b.sentences` and leaves the reordering check to the `.pptx`. + let per_page = b.sentences.len().div_ceil(PAGES); + for (page, chunk) in b.sentences.chunks(per_page).enumerate() { + let frames: String = chunk + .iter() + .map(|s| { + format!( + "{}", + xml_escape(s) + ) + }) + .collect(); + xml.push_str(&format!( + "{frames}", + page + 1 + )); + } + let content = format!( + "\ + {xml}\ + " + ); + let path = package( + dir, + "deck.odp", + "application/vnd.oasis.opendocument.presentation", + &content, + ); + out.push(Sample::prose(path, "odp", &b, false)); +} diff --git a/crates/quicksearch-core/tests/corpus/ooxml.rs b/crates/quicksearch-core/tests/corpus/ooxml.rs new file mode 100644 index 0000000..4fbeb7c --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/ooxml.rs @@ -0,0 +1,132 @@ +//! The three OOXML corpus files: `.docx`, `.xlsx`, `.pptx`. +//! +//! `docx-rs` and `rust_xlsxwriter` are complete, independent implementations +//! of their formats — including the container, since `docx-rs` carries `zip` +//! 8.x against the 0.6 `extract::office` reads with. There is no comparable +//! crate for PowerPoint, so the `.pptx` is assembled from [`super::zipwriter`] +//! and `format!`, which is independent of both `zip` 0.6 and `quick-xml`. + +use std::path::Path; + +use super::zipwriter::{self, Entry}; +use super::{BodyFn, Charset, Lcg, Sample}; + +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + docx(dir, lcg, body, out); + xlsx(dir, lcg, body, out); + pptx(dir, lcg, body, out); +} + +/// One paragraph per sentence, one run per paragraph — so each sentence lands +/// in a single `` and reaches the reader contiguous. +fn docx(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + use docx_rs::*; + + let b = body(lcg, Charset::Unicode); + let mut docx = Docx::new(); + for sentence in &b.sentences { + docx = docx.add_paragraph(Paragraph::new().add_run(Run::new().add_text(sentence))); + } + let path = dir.join("prose.docx"); + let file = std::fs::File::create(&path).expect("create docx"); + docx.build().pack(file).expect("pack docx"); + out.push(Sample::prose(path, "docx", &b, false)); +} + +/// One sentence per cell, one cell per row. +/// +/// `rust_xlsxwriter` puts strings in a real `xl/sharedStrings.xml` table and +/// has the cells index into it, which is the path `extract_xlsx` exists for — +/// an inline-string writer would leave the shared-string reader untested. +fn xlsx(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + use rust_xlsxwriter::Workbook; + + let b = body(lcg, Charset::Unicode); + let mut workbook = Workbook::new(); + let sheet = workbook.add_worksheet(); + for (row, sentence) in b.sentences.iter().enumerate() { + sheet + .write_string(row as u32, 0, sentence) + .expect("write cell"); + } + let path = dir.join("sheet.xlsx"); + workbook.save(&path).expect("save xlsx"); + out.push(Sample::prose(path, "xlsx", &b, false)); +} + +/// Sentences dealt across three slides, so `extract_pptx`'s per-slide loop and +/// its `--- New Slide ---` marker are both exercised rather than a single +/// slide's happy path. +fn pptx(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + const SLIDES: usize = 3; + let b = body(lcg, Charset::Unicode); + + let mut slides: Vec = Vec::with_capacity(SLIDES); + for slide in 0..SLIDES { + let paragraphs: String = b + .sentences + .iter() + .skip(slide) + .step_by(SLIDES) + .map(|s| { + format!( + "{}", + zipwriter::xml_escape(s) + ) + }) + .collect(); + slides.push(format!( + "\ + \ + {paragraphs}\ + " + )); + } + + let names: Vec = (1..=SLIDES) + .map(|i| format!("ppt/slides/slide{i}.xml")) + .collect(); + let mut entries = vec![Entry { + name: "[Content_Types].xml", + body: CONTENT_TYPES.as_bytes(), + }]; + for (name, xml) in names.iter().zip(&slides) { + entries.push(Entry { + name, + body: xml.as_bytes(), + }); + } + + let path = super::write_file(dir, "deck.pptx", &zipwriter::archive(&entries)); + + // Dealing round-robin means slide order, not sentence order, decides what + // the reader emits — so the expectation has to be rebuilt in the order the + // slides are read, not copied from `b.sentences`. + let mut expected = Vec::with_capacity(b.sentences.len()); + for slide in 0..SLIDES { + expected.extend(b.sentences.iter().skip(slide).step_by(SLIDES).cloned()); + } + out.push(Sample { + path, + label: "pptx", + must_contain: expected, + needle: b.needle.clone(), + head_path: false, + }); +} + +/// A `[Content_Types].xml` good enough to make the archive a real package. +/// The reader never opens it — it goes straight for `ppt/slides/slide*.xml` — +/// but a package without one is not a `.pptx`, and the corpus should not be +/// asserting against something no other tool would accept. +const CONTENT_TYPES: &str = "\ + \ + \ + \ + \ + \ + "; diff --git a/crates/quicksearch-core/tests/corpus/pdf.rs b/crates/quicksearch-core/tests/corpus/pdf.rs new file mode 100644 index 0000000..a41d598 --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/pdf.rs @@ -0,0 +1,69 @@ +//! The PDF corpus file, written with `pdf-writer`. +//! +//! `pdf-writer` is typst's low-level writer. It shares no code with +//! `pdf-extract` — in particular no `lopdf`, which is what `extract::pdf` +//! parses with and what the unit tests in `src/extract/pdf.rs` build their +//! fixtures with. +//! +//! # Why the text is Latin-1 +//! +//! Helvetica is one of the fourteen fonts every PDF reader ships, so no font +//! file has to be embedded and no glyph can be missing for the wrong reason. +//! Its repertoire under `WinAnsiEncoding` is cp1252 — which covers the +//! corpus's Latin-1 phrase and cannot express its Greek one. Hence +//! [`Charset::Latin1`]: demanding Greek here would be asserting against a +//! limit of the fixture rather than of the extractor. + +use std::path::Path; + +use pdf_writer::{Content, Finish, Name, Pdf, Rect, Ref, Str}; + +use super::{BodyFn, Charset, Lcg, Sample}; + +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Latin1); + + let catalog_id = Ref::new(1); + let page_tree_id = Ref::new(2); + let page_id = Ref::new(3); + let font_id = Ref::new(4); + let content_id = Ref::new(5); + let font_name = Name(b"F1"); + + let mut pdf = Pdf::new(); + pdf.catalog(catalog_id).pages(page_tree_id); + pdf.pages(page_tree_id).kids([page_id]).count(1); + + let mut page = pdf.page(page_id); + page.media_box(Rect::new(0.0, 0.0, 595.0, 842.0)); + page.parent(page_tree_id); + page.contents(content_id); + page.resources().fonts().pair(font_name, font_id); + page.finish(); + + // Without an explicit encoding the font falls back to StandardEncoding, + // whose upper half is not Latin-1 at all — `é` would come back as an + // acute accent on its own. + pdf.type1_font(font_id) + .base_font(Name(b"Helvetica")) + .encoding_predefined(Name(b"WinAnsiEncoding")); + + let mut content = Content::new(); + content.begin_text(); + content.set_font(font_name, 12.0); + // Leading set once, then one `next_line` per sentence: each sentence is a + // single `Tj` so nothing can be interleaved into the middle of one. + content.set_leading(16.0); + content.next_line(56.0, 780.0); + for (i, sentence) in b.sentences.iter().enumerate() { + if i > 0 { + content.next_line(0.0, 0.0); + } + content.show(Str(&super::plaintext::to_cp1252(sentence))); + } + content.end_text(); + pdf.stream(content_id, &content.finish()); + + let path = super::write_file(dir, "prose.pdf", &pdf.finish()); + out.push(Sample::prose(path, "pdf", &b, false)); +} diff --git a/crates/quicksearch-core/tests/corpus/plaintext.rs b/crates/quicksearch-core/tests/corpus/plaintext.rs new file mode 100644 index 0000000..6fbbb7b --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/plaintext.rs @@ -0,0 +1,283 @@ +//! Plain-text corpus files: one per extension family, plus one per encoding. +//! +//! Written with `std` alone. The one place that needs an encoder — windows-1252 +//! — gets a hand-rolled one rather than `encoding_rs`, which is what +//! `textenc::decode_text` reads it back with. +//! +//! The extension sweep is not decoration: it drives all three stages of +//! `mime::guess_mime_from_head`. `.bat` comes from the override table, most +//! come from `mime_guess`, and the extensionless `README` reaches the text +//! sniff with no other evidence at all. Several of the extensions here also +//! resolve to `EXTRA_TEXT_MIMES` entries (`.json`, `.sql`, `.svg`, `.m3u`, +//! `.eml`), which the plaintext extractor claims only because it is registered +//! ahead of the audio one. + +use std::path::{Path, PathBuf}; + +use super::{BodyFn, Charset, Lcg, Sample}; + +/// Encode `s` as windows-1252, replacing anything the codepage cannot hold. +/// +/// cp1252 is Latin-1 with 27 printable characters filled into the C1 range, so +/// the whole encoder is: identity below 0x100 except for that range, plus the +/// reverse of the table for it. Hand-rolled deliberately — `encoding_rs` is the +/// decoder under test. +/// +/// Shared with [`super::pdf`], whose base-14 font is WinAnsi — the same +/// repertoire under a different name. +pub fn to_cp1252(s: &str) -> Vec { + /// The 0x80-0x9F block, in order. `\u{FFFD}` marks the five unassigned + /// slots, which nothing maps onto. + const C1: [char; 32] = [ + '\u{20AC}', '\u{FFFD}', '\u{201A}', '\u{0192}', '\u{201E}', '\u{2026}', '\u{2020}', + '\u{2021}', '\u{02C6}', '\u{2030}', '\u{0160}', '\u{2039}', '\u{0152}', '\u{FFFD}', + '\u{017D}', '\u{FFFD}', '\u{FFFD}', '\u{2018}', '\u{2019}', '\u{201C}', '\u{201D}', + '\u{2022}', '\u{2013}', '\u{2014}', '\u{02DC}', '\u{2122}', '\u{0161}', '\u{203A}', + '\u{0153}', '\u{FFFD}', '\u{017E}', '\u{0178}', + ]; + let mut out = Vec::with_capacity(s.len()); + for c in s.chars() { + let code = c as u32; + if code < 0x80 || (0xA0..=0xFF).contains(&code) { + out.push(code as u8); + } else if let Some(i) = C1.iter().position(|&t| t == c && t != '\u{FFFD}') { + out.push(0x80 + i as u8); + } else { + out.push(b'?'); + } + } + out +} + +/// Extensions that exercise a distinct route through `guess_mime_from_head`, +/// paired with a wrapper that makes the file plausible for its type. +/// +/// The wrapper matters less than it looks — the plaintext extractor decodes +/// rather than parses, so nothing here is validated as JSON or XML. It is +/// there so a human opening the scratch directory sees files, not lipsum with +/// a misleading suffix. +const EXTENSIONS: &[(&str, Wrapper)] = &[ + ("txt", Wrapper::Raw), + ("md", Wrapper::Raw), + ("log", Wrapper::Raw), + ("csv", Wrapper::Csv), + ("html", Wrapper::Html), + ("xml", Wrapper::Xml), + ("svg", Wrapper::Svg), + ("json", Wrapper::Json), + ("yml", Wrapper::Yaml), + ("sql", Wrapper::Sql), + ("sh", Wrapper::Hash), + ("py", Wrapper::Hash), + ("rs", Wrapper::Slashes), + ("ini", Wrapper::Ini), + ("srt", Wrapper::Srt), + ("m3u", Wrapper::M3u), + ("eml", Wrapper::Eml), + // From `mime::EXTENSION_OVERRIDES`, not from `mime_guess`, which calls it + // an executable. + ("bat", Wrapper::Rem), +]; + +#[derive(Clone, Copy)] +enum Wrapper { + Raw, + Csv, + Html, + Xml, + Svg, + Json, + Yaml, + Sql, + Hash, + Slashes, + Ini, + Srt, + M3u, + Eml, + Rem, +} + +impl Wrapper { + /// Render `sentences` in this file type's clothing. Every sentence must + /// come out contiguous and unaltered — the fragments are asserted against + /// the decoded text verbatim. + fn render(self, sentences: &[String]) -> String { + let lines = |prefix: &str| { + sentences + .iter() + .map(|s| format!("{prefix}{s}")) + .collect::>() + .join("\n") + }; + match self { + Wrapper::Raw => sentences.join("\n"), + // One sentence per cell keeps it a single field; no sentence + // contains a comma or a quote, so no quoting is needed. + Wrapper::Csv => lines(""), + Wrapper::Html => format!( + "\n\n{}\n", + sentences + .iter() + .map(|s| format!("

{s}

")) + .collect::>() + .join("\n") + ), + Wrapper::Xml => format!( + "\n\n{}\n", + sentences + .iter() + .map(|s| format!(" {s}")) + .collect::>() + .join("\n") + ), + Wrapper::Svg => format!( + "\n{}\n", + sentences + .iter() + .enumerate() + .map(|(i, s)| format!(" {s}", 20 + i * 20)) + .collect::>() + .join("\n") + ), + // Not `serde_json`: the sentences contain no character JSON would + // escape, and an escape would break the verbatim fragment match. + Wrapper::Json => format!( + "{{\n \"notes\": [\n{}\n ]\n}}", + sentences + .iter() + .map(|s| format!(" \"{s}\"")) + .collect::>() + .join(",\n") + ), + Wrapper::Yaml => format!("notes:\n{}", lines(" - ")), + Wrapper::Sql => format!( + "CREATE TABLE notes (body TEXT);\n{}", + sentences + .iter() + .map(|s| format!("INSERT INTO notes VALUES ('{s}');")) + .collect::>() + .join("\n") + ), + Wrapper::Hash => format!("#!/bin/sh\n{}", lines("# ")), + Wrapper::Slashes => format!("fn main() {{\n{}\n}}", lines(" // ")), + Wrapper::Ini => format!("[notes]\n{}", lines("note = ")), + Wrapper::Srt => sentences + .iter() + .enumerate() + .map(|(i, s)| { + format!( + "{}\n00:00:{:02},000 --> 00:00:{:02},000\n{s}\n", + i + 1, + i * 2, + i * 2 + 2 + ) + }) + .collect::>() + .join("\n"), + Wrapper::M3u => format!("#EXTM3U\n{}", lines("#EXTINF:-1,")), + Wrapper::Eml => format!( + "From: corpus@example.invalid\nTo: reader@example.invalid\n\ + Subject: lipsum\nContent-Type: text/plain; charset=utf-8\n\n{}", + sentences.join("\n") + ), + Wrapper::Rem => format!("@echo off\n{}", lines("REM ")), + } + } +} + +/// Every plaintext sample: the extension sweep, the encoding sweep, the +/// extensionless sniff case, and one file past `hash_length`. +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + for (ext, wrapper) in EXTENSIONS { + let b = body(lcg, Charset::Unicode); + let text = wrapper.render(&b.sentences); + let path = super::write_file(dir, &format!("prose-{ext}.{ext}"), text.as_bytes()); + out.push(Sample::prose(path, ext, &b, true)); + } + + // No extension at all: `mime_guess` has nothing, `infer` has nothing, and + // only `textenc::looks_like_text` can answer. UTF-8 with no BOM is the + // one class it accepts on proof rather than on evidence. + let b = body(lcg, Charset::Unicode); + let path = super::write_file(dir, "README", b.sentences.join("\n").as_bytes()); + out.push(Sample::prose(path, "extensionless", &b, true)); + + write_encodings(dir, lcg, body, out); + write_oversized(dir, lcg, body, out); +} + +/// The same prose in five encodings. All five are `.txt`, so all five reach +/// the extractor identically and any difference is `textenc`'s alone. +fn write_encodings(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + // UTF-8 with a BOM: classified by `Encoding::for_bom` before the binary + // guard ever runs. + let b = body(lcg, Charset::Unicode); + let mut bytes = vec![0xEF, 0xBB, 0xBF]; + bytes.extend_from_slice(b.sentences.join("\n").as_bytes()); + let path = super::write_file(dir, "encoding-utf8-bom.txt", &bytes); + out.push(Sample::prose(path, "utf-8 + BOM", &b, true)); + + // UTF-16, both endiannesses, BOM-marked. Full of NUL bytes, which is + // exactly why the BOM check has to precede the binary guard. + for (label, name, big_endian) in [ + ("utf-16le + BOM", "encoding-utf16le.txt", false), + ("utf-16be + BOM", "encoding-utf16be.txt", true), + ] { + let b = body(lcg, Charset::Unicode); + let text = b.sentences.join("\n"); + let mut bytes = if big_endian { + vec![0xFE, 0xFF] + } else { + vec![0xFF, 0xFE] + }; + for unit in text.encode_utf16() { + let pair = if big_endian { + unit.to_be_bytes() + } else { + unit.to_le_bytes() + }; + bytes.extend_from_slice(&pair); + } + let path = super::write_file(dir, name, &bytes); + out.push(Sample::prose(path, label, &b, true)); + } + + // windows-1252: no BOM, not valid UTF-8, and decoded only because the + // `.txt` extension already established it is text. `Charset::Latin1` + // because the codepage cannot hold the Greek. + let b = body(lcg, Charset::Latin1); + let path = super::write_file( + dir, + "encoding-cp1252.txt", + &to_cp1252(&b.sentences.join("\n")), + ); + out.push(Sample::prose(path, "windows-1252", &b, true)); +} + +/// A file comfortably past the default `hash_length` of 8 KiB. +/// +/// Under that size the walk hands the whole buffer to `extract_from_head` and +/// the file is never reopened; over it, the content pass runs the sized on-disk +/// read instead. Both paths must produce the planted text, and only this +/// sample proves the second one does. +fn write_oversized(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Unicode); + let mut text = String::new(); + // Padding first, so the planted sentences sit past the 8 KiB mark and a + // reader that silently stopped at the head would find none of them. + while text.len() < 12 * 1024 { + text.push_str("padding filler ligula quis bibendum auctor nisi elit\n"); + } + text.push_str(&b.sentences.join("\n")); + let path = super::write_file(dir, "oversized.txt", text.as_bytes()); + // `head_path` stays true: `extract_from_head` is only ever called with a + // *complete* buffer, so the agreement assertion passes it the whole file. + out.push(Sample::prose(path, "oversized text", &b, true)); +} + +/// Not part of the corpus — used by the fixture assertions to read a committed +/// source file. +pub fn read_to_string(path: &PathBuf) -> String { + std::fs::read_to_string(path).unwrap_or_else(|e| panic!("read {}: {e}", path.display())) +} diff --git a/crates/quicksearch-core/tests/corpus/rtf.rs b/crates/quicksearch-core/tests/corpus/rtf.rs new file mode 100644 index 0000000..8638950 --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/rtf.rs @@ -0,0 +1,82 @@ +//! An RTF corpus file, written as control words by hand. +//! +//! Hand-written rather than produced by a crate because RTF is a text format +//! whose writer side is trivial, and because the only Rust RTF library in the +//! tree is `rtf-parser` — the reader under test. +//! +//! Both non-ASCII escape forms are exercised, since they are separate code +//! paths in the parser and a document from a real word processor contains +//! both: `\'hh` for anything the declared codepage holds, `\uN?` for the rest. + +use std::path::Path; + +use super::{BodyFn, Charset, Lcg, Sample}; + +/// Escape one character into RTF source. +/// +/// Below 0x80 only the three structural characters need escaping. From 0x80 to +/// 0xFF the `\'hh` hex form matches the `\ansicpg1252` declared in the header. +/// Above that, `\uN` carries the UTF-16 code unit. +/// +/// # Why the fallback is `\'3f` and not a literal `?` +/// +/// A `\uN` escape is followed by an ANSI fallback for readers that cannot do +/// Unicode, and the spec lets that be any character. This writer emits +/// `\uN\'3f` — the escaped form of `?` — because that is what LibreOffice +/// writes, and checking a file a real producer wrote is the point of this +/// corpus. +/// +/// The literal form, `\uN?`, is equally legal and equally common, and it used +/// to lose the escape and the rest of the word. That is fixed — see +/// `rtf_unicode_escapes_survive_extraction` in `tests/extraction_corpus.rs`, +/// which covers all three spellings and is where that shape is now pinned. +/// Keeping this writer on LibreOffice's form keeps the corpus a check on real +/// output rather than a second copy of that test. +fn escape(c: char, out: &mut String) { + let code = c as u32; + match c { + '\\' | '{' | '}' => { + out.push('\\'); + out.push(c); + } + _ if code < 0x80 => out.push(c), + // cp1252 and Latin-1 agree over 0xA0-0xFF, which is the whole range + // the corpus's Latin-1 phrase uses. + _ if (0xA0..=0xFF).contains(&code) => out.push_str(&format!("\\'{code:02x}")), + _ => { + // Surrogate pairs are written as two `\uN`, which is what the + // format requires: the escape carries a UTF-16 code unit, not a + // scalar value. Units above 0x7FFF are written negative. + let mut buf = [0u16; 2]; + for unit in c.encode_utf16(&mut buf) { + out.push_str(&format!("\\u{}\\'3f", *unit as i16)); + } + } + } +} + +/// The RTF source for `sentences`, one paragraph each. +fn document(sentences: &[String]) -> String { + let mut out = String::from("{\\rtf1\\ansi\\ansicpg1252\\deff0{\\fonttbl{\\f0 Helvetica;}}\n"); + for (i, sentence) in sentences.iter().enumerate() { + // A control word swallows exactly one following space as its + // delimiter, so `\par ` puts nothing of its own into the text. + if i > 0 { + out.push_str("\\par "); + } + for c in sentence.chars() { + escape(c, &mut out); + } + out.push('\n'); + } + out.push('}'); + out +} + +pub fn write_all(dir: &Path, lcg: &mut Lcg, body: &mut BodyFn<'_>, out: &mut Vec) { + let b = body(lcg, Charset::Unicode); + let path = super::write_file(dir, "prose.rtf", document(&b.sentences).as_bytes()); + // RTF is the other format with an `extract_from_head`: it has no trailer + // and needs no seeking, so a complete buffer parses exactly like the file. + out.push(Sample::prose(path, "rtf", &b, true)); +} diff --git a/crates/quicksearch-core/tests/corpus/zipwriter.rs b/crates/quicksearch-core/tests/corpus/zipwriter.rs new file mode 100644 index 0000000..00260cd --- /dev/null +++ b/crates/quicksearch-core/tests/corpus/zipwriter.rs @@ -0,0 +1,99 @@ +//! A minimal ZIP writer, stored (uncompressed) entries only. +//! +//! Exists so the pptx and ODF containers are not built by `zip` 0.6 — the same +//! crate `extract::office` reads them back with. It is about sixty lines of +//! well-specified structure (APPNOTE 4.3), which is a smaller thing to get +//! wrong than the agreement it is here to test. +//! +//! Stored rather than deflated because the reader accepts both (see the `zip` +//! entry in `Cargo.toml`) and stored needs no compressor. `crc32fast` supplies +//! the one field that cannot be hand-waved. +//! +//! No zip64, no data descriptors, no unicode path extra field: every corpus +//! member has an ASCII name and is a few kilobytes. + +/// One member of the archive. +pub struct Entry<'a> { + pub name: &'a str, + pub body: &'a [u8], +} + +/// Serialize `entries` into a complete `.zip`. +pub fn archive(entries: &[Entry<'_>]) -> Vec { + let mut out = Vec::new(); + // (crc, size, local header offset) per entry, for the central directory. + let mut placed: Vec<(u32, usize, usize)> = Vec::with_capacity(entries.len()); + + for entry in entries { + let offset = out.len(); + let crc = crc32fast::hash(entry.body); + out.extend_from_slice(b"PK\x03\x04"); + out.extend_from_slice(&20u16.to_le_bytes()); // version needed + out.extend_from_slice(&0u16.to_le_bytes()); // flags + out.extend_from_slice(&0u16.to_le_bytes()); // method: stored + // A fixed DOS timestamp — 1980-01-01 00:00:00, the epoch of the + // format. Nothing reads it, and a real clock would make two runs of + // the same seed produce different bytes. + out.extend_from_slice(&0u16.to_le_bytes()); // time + out.extend_from_slice(&0x0021u16.to_le_bytes()); // date + out.extend_from_slice(&crc.to_le_bytes()); + out.extend_from_slice(&(entry.body.len() as u32).to_le_bytes()); // compressed + out.extend_from_slice(&(entry.body.len() as u32).to_le_bytes()); // uncompressed + out.extend_from_slice(&(entry.name.len() as u16).to_le_bytes()); + out.extend_from_slice(&0u16.to_le_bytes()); // extra len + out.extend_from_slice(entry.name.as_bytes()); + out.extend_from_slice(entry.body); + placed.push((crc, entry.body.len(), offset)); + } + + let cd_start = out.len(); + for (entry, (crc, size, offset)) in entries.iter().zip(&placed) { + out.extend_from_slice(b"PK\x01\x02"); + out.extend_from_slice(&20u16.to_le_bytes()); // version made by + out.extend_from_slice(&20u16.to_le_bytes()); // version needed + out.extend_from_slice(&0u16.to_le_bytes()); // flags + out.extend_from_slice(&0u16.to_le_bytes()); // method: stored + out.extend_from_slice(&0u16.to_le_bytes()); // time + out.extend_from_slice(&0x0021u16.to_le_bytes()); // date + out.extend_from_slice(&crc.to_le_bytes()); + out.extend_from_slice(&(*size as u32).to_le_bytes()); + out.extend_from_slice(&(*size as u32).to_le_bytes()); + out.extend_from_slice(&(entry.name.len() as u16).to_le_bytes()); + out.extend_from_slice(&0u16.to_le_bytes()); // extra len + out.extend_from_slice(&0u16.to_le_bytes()); // comment len + out.extend_from_slice(&0u16.to_le_bytes()); // disk number start + out.extend_from_slice(&0u16.to_le_bytes()); // internal attrs + out.extend_from_slice(&0u32.to_le_bytes()); // external attrs + out.extend_from_slice(&(*offset as u32).to_le_bytes()); + out.extend_from_slice(entry.name.as_bytes()); + } + let cd_size = out.len() - cd_start; + + out.extend_from_slice(b"PK\x05\x06"); + out.extend_from_slice(&0u16.to_le_bytes()); // this disk + out.extend_from_slice(&0u16.to_le_bytes()); // disk with central directory + out.extend_from_slice(&(entries.len() as u16).to_le_bytes()); + out.extend_from_slice(&(entries.len() as u16).to_le_bytes()); + out.extend_from_slice(&(cd_size as u32).to_le_bytes()); + out.extend_from_slice(&(cd_start as u32).to_le_bytes()); + out.extend_from_slice(&0u16.to_le_bytes()); // comment len + out +} + +/// Escape `s` for XML character data. +/// +/// The corpus plants `&` and `<` nowhere by default, but the writers below +/// route every piece of body text through this so a future sentence +/// containing one cannot silently produce an unparseable container. +pub fn xml_escape(s: &str) -> String { + let mut out = String::with_capacity(s.len()); + for c in s.chars() { + match c { + '&' => out.push_str("&"), + '<' => out.push_str("<"), + '>' => out.push_str(">"), + _ => out.push(c), + } + } + out +} diff --git a/crates/quicksearch-core/tests/extraction_corpus.rs b/crates/quicksearch-core/tests/extraction_corpus.rs new file mode 100644 index 0000000..6e71963 --- /dev/null +++ b/crates/quicksearch-core/tests/extraction_corpus.rs @@ -0,0 +1,337 @@ +//! End-to-end extraction coverage across every format QuickSearch claims. +//! +//! The corpus itself — what is written, by which library, and why that library +//! rather than the reader's own — is documented in [`corpus`]. This file is +//! only the assertions. +//! +//! Three layers, deliberately, because they fail for different reasons: +//! +//! 1. [`every_format_extracts_its_planted_text`] goes through +//! `mime::guess_mime_from_head` and `extract::Registry`, so a file typed +//! wrongly and a file parsed wrongly are both caught, and the failure +//! message says which. +//! 2. [`head_extraction_agrees_with_reading_the_file`] pins the walk-time +//! shortcut against the content-pass path, in both directions. +//! 3. [`the_whole_corpus_indexes_and_is_searchable`] is the product claim: the +//! text reached FTS5 and a user typing a word from the document finds it. + +mod common; +mod corpus; + +use std::path::Path; +use std::sync::atomic::AtomicU64; + +use quicksearch_core::config::Config; +use quicksearch_core::extract::Registry; +use quicksearch_core::mime; +use quicksearch_core::query::split_for_cascade; +use quicksearch_core::search::cascade; +use quicksearch_core::search::SearchOptions; + +use corpus::Sample; + +/// How much of a file the MIME sniff is shown. The same default the indexer +/// uses, so dispatch here matches dispatch in a real run. +const HEAD: usize = 8 * 1024; + +/// Read the leading [`HEAD`] bytes, which is what the walk hands the sniff. +fn head_of(path: &Path) -> Vec { + let bytes = std::fs::read(path).unwrap_or_else(|e| panic!("read {}: {e}", path.display())); + bytes[..bytes.len().min(HEAD)].to_vec() +} + +/// Whether the file is small enough that the walk would extract it from the +/// buffer it already hashed, rather than reopening it. +fn fits_in_head(path: &Path) -> bool { + std::fs::metadata(path) + .map(|m| m.len() as usize) + .unwrap_or(usize::MAX) + <= HEAD +} + +/// Prefix every failure with the seed, so a red CI job reproduces locally. +fn ctx(sample: &Sample) -> String { + format!( + "[{} | {} | QUICKSEARCH_CORPUS_SEED={}]", + sample.label, + sample.path.display(), + corpus::seed() + ) +} + +/// Every corpus file is typed, claimed by an extractor, and yields its planted +/// lipsum in order. +#[test] +fn every_format_extracts_its_planted_text() { + let (_dir, samples) = corpus::build("corpus-extract"); + let registry = Registry::default_set(); + + for sample in &samples { + let head = head_of(&sample.path); + let mime = mime::guess_mime_from_head(&sample.path, &head) + .unwrap_or_else(|| panic!("{} no MIME resolved", ctx(sample))); + assert!( + registry.supports(&mime), + "{} MIME {mime:?} is claimed by no extractor", + ctx(sample) + ); + + let content = registry + .extract(&sample.path, &mime) + .unwrap_or_else(|e| panic!("{} extraction failed: {e}", ctx(sample))) + .unwrap_or_else(|| panic!("{} MIME {mime:?} dispatched nowhere", ctx(sample))); + + if let Err(why) = corpus::match_in_order(&content.text, &sample.must_contain) { + panic!("{} extracted text is wrong\n{why}", ctx(sample)); + } + } + + // A corpus that silently stopped generating anything would pass every + // assertion above. + assert!( + samples.len() >= 35, + "corpus shrank to {} samples", + samples.len() + ); +} + +/// The walk-time buffer path and the content-pass path agree, and only the +/// formats that can support the shortcut take it. +#[test] +fn head_extraction_agrees_with_reading_the_file() { + let (_dir, samples) = corpus::build("corpus-head"); + let registry = Registry::default_set(); + let mut opted_in = 0; + + for sample in &samples { + let head = head_of(&sample.path); + let mime = mime::guess_mime_from_head(&sample.path, &head).expect("MIME"); + let whole = std::fs::read(&sample.path).expect("read whole file"); + let from_head = registry.extract_complete_head(&sample.path, &mime, &whole); + + if !sample.head_path { + // A format that seeks, or reads a trailer, must never be handed a + // buffer — `None` here is what routes it back to the on-disk + // extractor rather than to a wrong answer. + assert!( + from_head.is_none(), + "{} took the head path but cannot support it", + ctx(sample) + ); + continue; + } + opted_in += 1; + + let from_head = from_head + .unwrap_or_else(|| panic!("{} declined the head path", ctx(sample))) + .unwrap_or_else(|e| panic!("{} head extraction failed: {e}", ctx(sample))); + let from_disk = registry + .extract(&sample.path, &mime) + .expect("on-disk extraction") + .expect("claimed"); + + assert_eq!( + from_head.text, + from_disk.text, + "{} head and disk extraction disagree", + ctx(sample) + ); + + // The claim is only interesting where the walk would really take the + // shortcut. `oversized.txt` is the deliberate exception. + if fits_in_head(&sample.path) { + assert!( + corpus::match_in_order(&from_head.text, &sample.must_contain).is_ok(), + "{} head extraction lost the planted text", + ctx(sample) + ); + } + } + + assert!( + opted_in >= 24, + "only {opted_in} samples exercised the head path" + ); +} + +/// The whole corpus indexes, and each file is findable by a word that appears +/// only in its body. +#[test] +fn the_whole_corpus_indexes_and_is_searchable() { + let (dir, samples) = corpus::build("corpus-index"); + // The database goes in its own directory, not the one being walked. Left + // inside, SQLite's `-wal` and `-shm` sidecars appear under the root and + // survive only because a default ignore pattern happens to prune them — + // which is a dependency this test has no reason to take on. + let db = common::scratch_db("corpus-index-db"); + let config = Config::default(); + + common::IndexOnce { + db: &db, + roots: vec![dir.to_string_lossy().into_owned()], + config: &config, + fresh_marker: false, + encrypted: false, + } + .run(); + + let conn = rusqlite::Connection::open(&db).expect("open index"); + for sample in &samples { + let hits = search(&conn, &sample.needle); + let paths: Vec<&str> = hits.iter().map(|p| p.as_str()).collect(); + assert_eq!( + hits.len(), + 1, + "{} searching {:?} returned {:?}", + ctx(sample), + sample.needle, + paths + ); + assert!( + Path::new(&hits[0]) == sample.path, + "{} searching {:?} found {:?}", + ctx(sample), + sample.needle, + hits[0] + ); + } +} + +/// Every result path for `term`, run through the same cascade the GUI uses. +fn search(conn: &rusqlite::Connection, term: &str) -> Vec { + let split = split_for_cascade(term).expect("split"); + let latest = AtomicU64::new(1); + let mut paths = Vec::new(); + cascade::run( + conn, + &split, + &SearchOptions::default(), + 1, + &latest, + &mut |batch| { + for hit in batch { + paths.push(hit.path.clone()); + } + }, + ) + .expect("cascade run") + .expect("not cancelled"); + paths +} + +/// Two RTF lexer bugs this corpus found, now fixed in `vendor/rtf-parser`. +/// +/// Both came from a lexer that decided where a control word ends by looking +/// for whitespace, and then trimmed leading spaces off whatever followed. The +/// second reproduced on a file LibreOffice wrote. +/// +/// **A `\uN` escape with a literal fallback took the rest of the word with +/// it.** The escape is followed by an ANSI fallback character for readers that +/// predate Unicode, and the spec allows any character there. Terminating a +/// control word at whitespace only meant `before \u233?after end` lexed +/// `\u233?after` as one unrecognised control word and yielded `"before end"` — +/// the accented character gone, and `after` with it. The loss ran to the next +/// space. The spellings that put a backslash where the lexer needed a boundary +/// — LibreOffice's `\uN\'3f` and Word's `\uN\'hh` — were unaffected. +/// +/// **A space between two escaped words was dropped.** After a `\'hh` escape +/// the lexer re-tokenised the remainder, trimming its leading spaces before +/// deciding what it was. A plain-text remainder kept the untrimmed slice and +/// survived; one beginning with another control word did not. So +/// `Καλημέρα κόσμε` — every character escaped on both sides of the space — +/// came back as `Καλημέρακόσμε`, two words collapsed into one FTS term. That +/// hit every script outside cp1252: Greek, Cyrillic, Hebrew, CJK. Latin-1 text +/// was fine, because there the escapes sit *inside* words (`caf\'e9`) and the +/// space that follows is plain text. +/// +/// The fixes are `StrUtils::split_control_word` and the `\'hh` arm of +/// `Lexer::tokenize`, both marked LOCAL PATCH; the fallback characters are now +/// counted off against `\ucN` in the parser rather than guessed at. See the +/// `[patch.crates-io]` note in the workspace manifest. +#[test] +fn rtf_unicode_escapes_survive_extraction() { + let dir = quicksearch_core::testutil::scratch_dir("rtf-escapes"); + let extract = |name: &str, body: &str| { + use quicksearch_core::extract::Extractor; + let path = dir.join(name); + std::fs::write(&path, body).unwrap(); + quicksearch_core::extract::rtf::RtfExtractor + .extract(&path) + .unwrap_or_else(|e| panic!("{name}: {e}")) + .text + }; + + // The literal fallback. Both halves matter: the escape survives, and so + // does the word it used to swallow. + let text = extract("literal.rtf", r"{\rtf1\ansi before \u233?after end}"); + assert!(text.contains("before éafter end"), "{text:?}"); + // And the fallback itself is *not* text. It repeats the character for + // readers that cannot do Unicode; indexing it would put a `?` inside every + // word containing a non-cp1252 character. + assert!(!text.contains('?'), "fallback character indexed: {text:?}"); + + // The same document in the two spellings that always worked, to pin that + // counting fallbacks did not break the ones the old mask handled. + for (label, body) in [ + ("libreoffice", r"{\rtf1\ansi before \u233\'3fafter end}"), + ("word", r"{\rtf1\ansi before \u233\'e9after end}"), + ] { + let text = extract(&format!("{label}.rtf"), body); + assert!(text.contains("before éafter end"), "{label}: {text:?}"); + } + + // `\ucN` is the fallback count, and it is not always one. + let text = extract("uc2.rtf", r"{\rtf1\ansi\uc2 a\u233?!b}"); + assert!(text.contains("aéb"), "two fallbacks not skipped: {text:?}"); + let text = extract("uc0.rtf", r"{\rtf1\ansi\uc0 a\u233?b}"); + assert!( + text.contains("aé?b"), + "\\uc0 means no fallback, so the `?` is real text: {text:?}" + ); + + // Exactly the bytes LibreOffice writes for `Καλημέρα κόσμε`. + let text = extract( + "escaped-words.rtf", + concat!( + r"{\rtf1\ansi ", + r"\u922\'3f\u945\'3f\u955\'3f\u951\'3f", + r"\u956\'3f\u941\'3f\u961\'3f\u945\'3f", + " ", + r"\u954\'3f\u972\'3f\u963\'3f\u956\'3f\u949\'3f", + "}" + ), + ); + assert!( + text.contains("Καλημέρα κόσμε"), + "the space between two fully escaped words was dropped: {text:?}" + ); + + // A `\'hh` that is nobody's fallback is still text, and a space after it + // is still a space — the case the second fix must not overshoot. + let text = extract("standalone-hex.rtf", r"{\rtf1\ansi caf\'e9 \'e0 noon}"); + assert!(text.contains("café à noon"), "{text:?}"); + + // A surrogate pair is one character, and `\uc1` puts a fallback between + // its halves. U+1F600, written the way Word writes it. + let text = extract("astral.rtf", r"{\rtf1\ansi a\u-10179?\u-8704?b}"); + assert!( + text.contains("a\u{1F600}b"), + "surrogate pair lost: {text:?}" + ); +} + +/// The corpus's needles and the shared harness's body term are the same word, +/// deliberately. +/// +/// `common::BODY_TERM` exists because a term that reaches the index through a +/// file *name* as well as a body is answered mostly by the filename pass — so +/// it plants one that only ever appears in a body. The corpus needs exactly +/// that property, per file, for its end-to-end search to be attributable to +/// extraction rather than to the name. +/// +/// `corpus` does not name `common` (it has no other reason to depend on the +/// harness), so this is what stops the two drifting apart silently. +#[test] +fn corpus_needles_use_the_shared_body_term() { + assert_eq!(corpus::NEEDLE_PREFIX, common::BODY_TERM); +} diff --git a/crates/quicksearch-core/tests/fixtures/legacy/README.md b/crates/quicksearch-core/tests/fixtures/legacy/README.md new file mode 100644 index 0000000..080c0dc --- /dev/null +++ b/crates/quicksearch-core/tests/fixtures/legacy/README.md @@ -0,0 +1,61 @@ +# Legacy Office fixtures + +`sample.doc`, `sample.xls` and `sample.ppt`, written by LibreOffice and +committed. Read by `tests/extraction_corpus.rs` through the corpus module in +`tests/corpus/legacy.rs`. + +## Why these three are committed when the rest of the corpus is generated + +Every other format in the extraction corpus is written at test time by a +library that is *not* the one that reads it back — the whole point being that a +fixture built with the reader's own library can only prove the two agree with +each other. The pre-2007 binary formats have no such library: `cfb` is the only +Rust crate that writes OLE2 compound files, and `cfb` is what `extract::ole` +reads them with. + +So a foreign producer writes them once, here, and the output is committed. +That buys more than independence — a LibreOffice `.doc` is a real FIB with a +real piece table, its `.xls` a real BIFF stream with a real `SST`, and its +`.ppt` drags the master slide's placeholder prompts (`Click to edit the title +text format`, `___PPT10`) into the text stream alongside the content. None of +those shapes come out of a minimal synthetic fixture, and the last one is why +the corpus asserts ordered *containment* rather than equality. + +The unit tests in `src/extract/ole_tests.rs` are the complement, not a +duplicate: they build deliberately malformed streams to check bounds and error +paths, which needs byte-level control that only `cfb` gives. + +## Files + +| file | role | +|---|---| +| `prose.txt` | source for `sample.doc` | +| `sheet.csv` | source for `sample.xls` — one cell per row, no commas | +| `deck.fodp` | source for `sample.ppt` — flat ODF, so the text is reviewable | +| `sample.doc` `sample.xls` `sample.ppt` | LibreOffice output, committed | +| `regen.sh` | regenerates the three from the sources | + +The sources are the source of truth: `legacy.rs` reads the expected fragments +out of them rather than restating the text, so a regenerated fixture that +dropped a line fails the test instead of quietly redefining what it should +contain. Each source carries a needle (`chalcedony9001`-`chalcedony9003`) that +the end-to-end search looks for; `legacy.rs` asserts it is still present. + +## Regenerating + +```sh +./regen.sh # needs libreoffice on PATH; last run with 26.2.4.2 +cargo test -p quicksearch-core --test extraction_corpus +``` + +The output is **not** byte-reproducible — LibreOffice stamps a creation time +into each file — so re-running changes the bytes without changing the text. +Commit the result only when the *sources* changed; the test is what says the +files are still right. + +`sample.ppt` is ~460 KB because the PowerPoint 97 export filter embeds the +master slide. There is no filter option that trims it, and it is well inside +the 2 MiB `maximum_text_file_size` the end-to-end run indexes with. + +Unlike the generated half of the corpus, the text in these three is fixed: +`QUICKSEARCH_CORPUS_SEED` does not affect them. diff --git a/crates/quicksearch-core/tests/fixtures/legacy/deck.fodp b/crates/quicksearch-core/tests/fixtures/legacy/deck.fodp new file mode 100644 index 0000000..6ac7cab --- /dev/null +++ b/crates/quicksearch-core/tests/fixtures/legacy/deck.fodp @@ -0,0 +1,38 @@ + + + + + + + + Lorem ipsum dolor sit amet consectetur + + + The needle chalcedony9003 marks this deck + + + Tempor incididunt café résumé naïve dolore + + + + + Ut enim ad Καλημέρα κόσμε veniam quis + + + Ullamco laboris nisi ut aliquip commodo + + + Irure dolor in reprehenderit voluptate velit + + + + + diff --git a/crates/quicksearch-core/tests/fixtures/legacy/prose.txt b/crates/quicksearch-core/tests/fixtures/legacy/prose.txt new file mode 100644 index 0000000..c7e9039 --- /dev/null +++ b/crates/quicksearch-core/tests/fixtures/legacy/prose.txt @@ -0,0 +1,6 @@ +Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod. +The needle chalcedony9001 marks this document for the end-to-end search. +Tempor incididunt ut labore café résumé naïve et dolore magna aliqua. +Ut enim ad minim Καλημέρα κόσμε veniam quis nostrud exercitation. +Ullamco laboris nisi ut aliquip ex ea commodo consequat duis aute. +Irure dolor in reprehenderit in voluptate velit esse cillum dolore. diff --git a/crates/quicksearch-core/tests/fixtures/legacy/regen.sh b/crates/quicksearch-core/tests/fixtures/legacy/regen.sh new file mode 100644 index 0000000..0d60a45 --- /dev/null +++ b/crates/quicksearch-core/tests/fixtures/legacy/regen.sh @@ -0,0 +1,39 @@ +#!/bin/sh +# Regenerate the committed .doc/.xls/.ppt fixtures from their sources. +# +# These three are the one corner of the extraction corpus that cannot be built +# on the fly: `cfb` is the only Rust crate that writes OLE2 compound files, and +# `cfb` is what `extract::ole` reads them with — a fixture built by the reader's +# own library can only prove the two agree with each other. So a foreign +# producer writes them once, here, and the output is committed. +# +# Requires LibreOffice on PATH. Last run with 26.2.4.2. +# +# The output is NOT byte-reproducible: LibreOffice stamps a creation time into +# each file. Re-running this changes the bytes without changing the text, so +# commit the result only when the *sources* changed. `cargo test -p +# quicksearch-core --test extraction_corpus` is what says the files are still +# right. +set -eu + +here=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd) +work=$(mktemp -d) +trap 'rm -rf "$work"' EXIT + +convert() { + # -env:UserInstallation keeps this off the invoking user's LibreOffice + # profile, which also lets it run when a desktop LibreOffice is open. + libreoffice --headless \ + -env:UserInstallation="file://$work/profile" \ + --convert-to "$1" --outdir "$work" "$2" >/dev/null +} + +convert doc "$here/prose.txt" +convert xls "$here/sheet.csv" +convert ppt "$here/deck.fodp" + +mv "$work/prose.doc" "$here/sample.doc" +mv "$work/sheet.xls" "$here/sample.xls" +mv "$work/deck.ppt" "$here/sample.ppt" + +ls -l "$here/sample.doc" "$here/sample.xls" "$here/sample.ppt" diff --git a/crates/quicksearch-core/tests/fixtures/legacy/sample.doc 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0000000000000000000000000000000000000000..976cd470e0d8ae7d73430fce218872693d1da2d8 GIT binary patch literal 8299 zcmeI&FA4%-5QpKPVE7OPS?r2gKGr|j76pwPwAz++H@aXD30R#|0009ILKmY**5I_I{1Q0*~0R#|0009ILKmY** U5I_Kde;0VawodN&eG%~2546V_DF6Tf literal 0 HcmV?d00001 diff --git a/crates/quicksearch-core/tests/full_index.rs b/crates/quicksearch-core/tests/full_index.rs index 32c2d62..cd1cb1b 100644 --- a/crates/quicksearch-core/tests/full_index.rs +++ b/crates/quicksearch-core/tests/full_index.rs @@ -1824,7 +1824,28 @@ fn the_wal_stays_bounded_during_a_run() { /// A run cut short is exactly when the log is at its largest and nothing else /// will come along to land it: the writer connection closes, and the next run /// may be hours away. So Stop ends the *indexing*, and the pass that follows -/// runs either way — visible as `Optimizing` until it is done. +/// runs either way. +/// +/// # Why this asks SQLite rather than watching the status +/// +/// This used to poll `get_status()` at 1 ms hoping to catch +/// `IndexingStatus::Optimizing` as it went past, and assert it had seen it. +/// That is a sample of a transient state, and it fails for reasons that have +/// nothing to do with the behaviour under test: a loaded machine deschedules +/// the polling thread, and — worse — *making the indexer faster shortens the +/// window*, so the test failed more often the better the code got. It was +/// failing roughly a third of the time before any of that, and five times in +/// six after a round of writer optimisations. +/// +/// So it asks the question directly instead: was `PRAGMA optimize` handed to +/// SQLite for this index? [`repo::optimize_count`] is a latch rather than a +/// sample, so no amount of speed or scheduling can hide the answer. Per the +/// pass's own contract, the pragma reaching SQLite is the optimization +/// happening — what SQLite then decides to re-analyse is its business, and +/// deliberately nothing when no table has drifted. +/// +/// The log assertion stays, because it checks the other half of the pass: the +/// trailing checkpoint that a stopped run exists to get. #[test] fn a_stopped_run_is_still_optimized() { let root = tmp_dir("stop-optimize"); @@ -1838,6 +1859,11 @@ fn a_stopped_run_is_still_optimized() { let db_dir = tmp_dir("stop-optimize-db"); let db = db_dir.join("index.sqlite"); let wal = db_dir.join("index.sqlite-wal"); + let dir_key = db_dir.to_string_lossy().into_owned(); + + // Per-directory, so a sibling test optimizing its own scratch index on + // another thread cannot satisfy this. + let before = quicksearch_core::db::repo::optimize_count(&dir_key); let service = IndexingService::new(); service @@ -1861,11 +1887,11 @@ fn a_stopped_run_is_still_optimized() { } service.request_stop(); - let mut saw_optimizing = false; + // Idle is the *end* of the pass, and unlike Optimizing it is a resting + // state — waiting for it cannot miss it however fast the pass was. let idle_by = Instant::now() + Duration::from_secs(120); loop { match service.get_status() { - IndexingStatus::Optimizing => saw_optimizing = true, IndexingStatus::Idle => break, IndexingStatus::Error(e) => panic!("indexing failed: {}", e), _ => {} @@ -1877,9 +1903,10 @@ fn a_stopped_run_is_still_optimized() { std::thread::sleep(Duration::from_millis(1)); } - assert!( - saw_optimizing, - "a stopped run must still publish Optimizing" + assert_eq!( + quicksearch_core::db::repo::optimize_count(&dir_key), + before + 1, + "a stopped run must still run PRAGMA optimize against its index" ); assert_eq!( std::fs::metadata(&wal).map(|m| m.len()).unwrap_or(0), diff --git a/crates/quicksearch-core/tests/prefilter_fuzz.rs b/crates/quicksearch-core/tests/prefilter_fuzz.rs new file mode 100644 index 0000000..8ca1dbc --- /dev/null +++ b/crates/quicksearch-core/tests/prefilter_fuzz.rs @@ -0,0 +1,779 @@ +//! Fuzzing the cascade's prefilters. +//! +//! Two passes narrow what they scan by "at least one of these literals must be +//! present" — the fuzzy full-text pass by its pigeonhole chunks, the `regex:` +//! passes by the literals extracted from the pattern. Both go through +//! [`quicksearch_core::search::prefilter`], and both share a failure mode that +//! is **silent**: a lost hit looks exactly like a file that does not match, and +//! no user could tell the difference. So neither is defended by a handful of +//! examples. +//! +//! The regex half gets a stronger check than the fuzzy half, because it has a +//! perfect oracle: running the compiled regex over each body *is* the right +//! answer, so the assertion is set equality rather than one-sided recall. +//! +//! # The generator +//! +//! Rather than invent queries and assert an expected answer, this manufactures +//! queries whose correct answer is known **by construction**: +//! +//! 1. take a document from the corpus, +//! 2. cut a substring of it — text the document provably contains, +//! 3. corrupt that substring `N ≤ k` times, +//! 4. search for the result. The document it came from **must** be found. +//! +//! Step 4 needs no oracle and no reference implementation: the term is within +//! `N` edits of something the document really contains, so a ≤`k`-edit +//! alignment exists and the prefilter is not allowed to exclude it. +//! +//! # Substring length is swept, not random +//! +//! Documents are long, so drawing the length uniformly would spend nearly every +//! iteration on long terms — the case least likely to be broken. Instead +//! [`ITERS_PER_LEN`] iterations run at *every* length from 1 to [`MAX_SWEEP`], +//! then a sparse tail for long terms. Short lengths are where the chunking, the +//! floors and the boundary conditions all live, and at the default cap the +//! `1..=20` sweep straddles every one of them: the 3-character fuzzy floor, and +//! `3 × (cap + 1) = 9` where the prefilter becomes legal. +//! +//! The bottom of the sweep is asserted rather than skipped. Below the fuzzy +//! floor no `Bitap` is built and the pass must not scan at all. +//! +//! # Edits are counted in bytes +//! +//! Bitap's budget is a byte budget, so substituting `é` (two bytes) for `x` +//! (one) is a distance of two, not one. Corruption works on characters to keep +//! the term valid UTF-8, then the true byte distance is measured against the +//! original substring and recall is only asserted when it really is within +//! budget. Without that, a non-ASCII corpus would quietly start generating +//! out-of-budget queries and every "miss" would be correct behaviour — the +//! test would pass by not testing anything. +//! +//! ```text +//! cargo test --release -p quicksearch-core --test fuzzy_prefilter_fuzz +//! QSB_FUZZ_ITERS=2000 cargo test --release -p quicksearch-core \ +//! --test fuzzy_prefilter_fuzz -- --nocapture +//! ``` + +use std::sync::atomic::AtomicU64; + +use quicksearch_core::query::split::split_for_cascade; +use quicksearch_core::search::fuzzy::{edit_budget, pigeonhole_chunks, Bitap, TRIGRAM_FLOOR}; +use quicksearch_core::search::{cascade, SearchHit, SearchOptions}; + +mod common; +use common::{scratch_db, Lcg}; + +/// Iterations at each swept substring length. +const ITERS_PER_LEN: usize = 100; + +/// Top of the dense sweep. Every length from 1 to here gets [`ITERS_PER_LEN`] +/// iterations. +const MAX_SWEEP: usize = 20; + +/// Long terms, sampled rather than swept. 64 is `Bitap`'s pattern ceiling and +/// 80 is past it, where the fuzzy passes must decline to run at all. +const LONG_TAIL: [usize; 6] = [24, 32, 48, 64, 80, 200]; + +/// Edit-distance caps to sweep beneath the length sweep. Each moves both the +/// budget and the `3 × (cap + 1)` guard. +const CAPS: [usize; 5] = [0, 1, 2, 3, 4]; + +/// How many caps the ungated run sweeps. The soak takes all of [`CAPS`]. +const BOUNDED_CAPS: usize = 3; + +// --------------------------------------------------------------------------- +// Corpus +// --------------------------------------------------------------------------- + +/// Documents to seed. Small — this is a correctness harness, and every +/// iteration runs a whole cascade — but varied enough that a query drawn from +/// one document meets plenty of others it must reject. +const DOCS: usize = 60; + +/// Bodies the generator draws substrings from. +/// +/// Deliberately hostile, because the substring generator carries whatever is in +/// the corpus straight into the term and then into the FTS chunks: +/// +/// * **FTS5 metacharacters** — `"`, `*`, `:`, `^`, `-`, `(`, `)` and the bare +/// word `NEAR`. A chunk containing these must be quoted into inertness by +/// `translator::quote_phrase`, or the query is a syntax error rather than a +/// search. This is the likeliest way to break the feature and it needs no +/// special case in the generator: it is simply in the text. +/// * **Multi-byte characters** at 2, 3 and 4 bytes, so a byte-wise chunk split +/// would produce invalid UTF-8. +/// * **Diacritics**, which the trigram index folds (`remove_diacritics 1`) and +/// bitap does not — the prefilter must stay a superset across that. +/// * **Mixed case**, which also exercises the case-insensitive mask table. +/// * **Degenerate shapes** — a repeated character, where every chunk of a +/// substring is identical and the substring is self-overlapping. +fn bodies() -> Vec { + let mut out = Vec::new(); + let mut lcg = Lcg::new(0xf0072); + let words = [ + "quartzite", + "Report", + "SUMMARY", + "café", + "naïve", + "Ünicode", + "日本語テキスト", + "emoji🙂here", + "NEAR", + "wild*card", + "colon:sep", + "quote\"mark", + "paren(then)", + "dash-joined", + "caret^up", + "aaaaaaaaaa", + "mixedCaseWord", + "budget", + "revenue", + "planning", + ]; + for d in 0..DOCS { + let n = 20 + (lcg.next() as usize % 40); + let mut body = String::new(); + for _ in 0..n { + body.push_str(words[lcg.next() as usize % words.len()]); + body.push(' '); + } + // One document that is nothing but a repeated character, and one that + // is empty, as fixed shapes beside the random ones. + match d { + 0 => body = "b".repeat(400), + 1 => body = String::new(), + _ => {} + } + out.push(body); + } + out +} + +// --------------------------------------------------------------------------- +// Oracles +// --------------------------------------------------------------------------- + +/// Minimum Levenshtein distance between `pattern` and any substring of `hay`, +/// over **bytes**, ASCII-case-insensitively — the metric the matcher uses. +/// +/// The shared brute-force reference. It is what decides whether a corrupted +/// term is genuinely inside the edit budget, and what the three-way comparison +/// checks both cascade paths against. +fn oracle_distance(pattern: &[u8], hay: &[u8]) -> usize { + if hay.is_empty() || pattern.is_empty() { + return usize::MAX; + } + let m = pattern.len(); + let mut prev: Vec = vec![0; hay.len() + 1]; + let mut cur = vec![0; hay.len() + 1]; + for i in 1..=m { + cur[0] = i; + for j in 1..=hay.len() { + let cost = usize::from(!pattern[i - 1].eq_ignore_ascii_case(&hay[j - 1])); + cur[j] = (prev[j - 1] + cost).min(prev[j] + 1).min(cur[j - 1] + 1); + } + std::mem::swap(&mut prev, &mut cur); + } + prev.iter().copied().min().unwrap_or(usize::MAX) +} + +// --------------------------------------------------------------------------- +// The generator +// --------------------------------------------------------------------------- + +/// One corruption applied to a character sequence. +fn corrupt(chars: &mut Vec, lcg: &mut Lcg) { + // A small alphabet of replacements, including multi-byte ones so that a + // single character edit can be a multi-byte edit. + const REPLACEMENTS: [char; 6] = ['x', 'Q', '7', 'é', '語', '🙂']; + let pick = REPLACEMENTS[lcg.next() as usize % REPLACEMENTS.len()]; + if chars.is_empty() { + chars.push(pick); + return; + } + let at = lcg.next() as usize % chars.len(); + match lcg.next() % 3 { + 0 => chars[at] = pick, // substitution + 1 => chars.insert(at, pick), // insertion + _ => { + chars.remove(at); // deletion + } + } +} + +/// Cut `len` characters out of `body` at a random offset, or `None` when the +/// body is too short to give that many. +fn substring_of<'a>(body: &'a str, len: usize, lcg: &mut Lcg) -> Option<&'a str> { + let bounds: Vec = body + .char_indices() + .map(|(i, _)| i) + .chain(std::iter::once(body.len())) + .collect(); + let chars = bounds.len() - 1; + if chars < len || len == 0 { + return None; + } + let start = lcg.next() as usize % (chars - len + 1); + Some(&body[bounds[start]..bounds[start + len]]) +} + +// --------------------------------------------------------------------------- +// Property 1: the pigeonhole invariant, with no database in sight +// --------------------------------------------------------------------------- + +/// The argument the whole prefilter rests on, isolated from FTS, from SQLite +/// and from bitap: if the term occurs within `k` edits, some chunk of the +/// `k + 1`-way split occurs **verbatim**. +/// +/// Driven by the same corrupt-a-known-substring generator, because a randomly +/// drawn (term, text) pair almost never has a ≤`k`-edit alignment and the +/// property would be vacuous. +#[test] +fn a_surviving_chunk_always_remains_after_k_edits() { + let bodies = bodies(); + let mut lcg = Lcg::new(0xc0ffee); + let mut exercised = 0usize; + + for &cap in &CAPS { + for len in sweep_lengths() { + for _ in 0..ITERS_PER_LEN { + let body = &bodies[lcg.next() as usize % bodies.len()]; + let Some(original) = substring_of(body, len, &mut lcg) else { + continue; + }; + let Some(k) = edit_budget(original.len(), cap) else { + continue; + }; + let mut chars: Vec = original.chars().collect(); + let edits = lcg.next() as usize % (k + 1); + for _ in 0..edits { + corrupt(&mut chars, &mut lcg); + } + let term: String = chars.into_iter().collect(); + + // Only meaningful when the corrupted term really is within the + // budget of the text — see the module note on byte distance. + let distance = oracle_distance(term.as_bytes(), body.as_bytes()); + let Some(chunks) = pigeonhole_chunks(&term, k) else { + continue; + }; + if distance > k { + continue; + } + + // The partition itself, checked every time: chunks that + // overlapped or skipped text would break the argument silently. + assert_eq!(chunks.concat(), term, "chunks must partition the term"); + assert_eq!(chunks.len(), k + 1, "one chunk per edit, plus one"); + assert!( + chunks.iter().all(|c| c.chars().count() >= TRIGRAM_FLOOR), + "every chunk must reach the trigram floor: {:?}", + chunks + ); + + // The property. + let folded_body = body.to_lowercase(); + assert!( + chunks + .iter() + .any(|c| folded_body.contains(&c.to_lowercase())), + "no chunk of {:?} survived in the body it came from \ + (k={}, distance={}, chunks={:?})", + term, + k, + distance, + chunks + ); + exercised += 1; + } + } + } + + assert!( + exercised > 500, + "the generator produced only {} in-budget cases; it is not exercising \ + the property", + exercised + ); +} + +/// Adversarial placement, which random corruption will almost never construct: +/// damage exactly `k` of the `k + 1` chunks, every combination, and check the +/// untouched one is still there to be found. +#[test] +fn damaging_every_chunk_but_one_leaves_that_one_intact() { + for k in 0..=3usize { + let term: String = (0..(k + 1) * 4) + .map(|i| char::from(b'a' + (i % 26) as u8)) + .collect(); + let chunks = pigeonhole_chunks(&term, k).expect("long enough by construction"); + // Damage all but one chunk, for each choice of the survivor. + for spared in 0..chunks.len() { + let mut text = String::new(); + for (i, chunk) in chunks.iter().enumerate() { + if i == spared { + text.push_str(chunk); + } else { + // One substitution inside this chunk. + let mut c: Vec = chunk.chars().collect(); + c[0] = 'Z'; + text.extend(c); + } + } + assert!( + chunks.iter().any(|c| text.contains(*c)), + "k={} spared={} term={:?} text={:?}", + k, + spared, + term, + text + ); + // And the damaged text really is within budget, so this is a case + // the pass would have to find. + assert!( + oracle_distance(term.as_bytes(), text.as_bytes()) <= k, + "the constructed text should be within {} edits", + k + ); + } + } +} + +// --------------------------------------------------------------------------- +// Property 2: end-to-end recall, three ways +// --------------------------------------------------------------------------- + +/// Lengths the sweep visits: dense from 1, then a sparse tail. +fn sweep_lengths() -> Vec { + (1..=MAX_SWEEP).chain(LONG_TAIL).collect() +} + +fn iters_per_len() -> usize { + std::env::var("QSB_FUZZ_ITERS") + .ok() + .and_then(|v| v.parse().ok()) + .unwrap_or(ITERS_PER_LEN) +} + +fn caps() -> &'static [usize] { + if std::env::var("QSB_FUZZ_ITERS").is_ok() { + &CAPS + } else { + &CAPS[..BOUNDED_CAPS] + } +} + +/// Run one fuzzy search and collect the file ids it found. +fn search_ids(conn: &rusqlite::Connection, term: &str, cap: usize) -> Vec { + let split = split_for_cascade(term).expect("any term parses; it degrades rather than errors"); + let latest = AtomicU64::new(1); + let options = SearchOptions { + fuzzy: true, + fuzzy_max_edits: cap, + limit: 100_000, + ..SearchOptions::default() + }; + let mut ids = Vec::new(); + let mut sink = |hits: Vec| ids.extend(hits.iter().map(|h| h.file_id)); + cascade::run(conn, &split, &options, 1, &latest, &mut sink).expect("the cascade runs"); + ids.sort(); + ids.dedup(); + ids +} + +/// The headline property: a term cut from a document and corrupted within the +/// edit budget still finds that document. +#[test] +fn a_corrupted_substring_still_finds_the_document_it_came_from() { + let bodies = bodies(); + let db = scratch_db("fuzzprefilter"); + let ids = seed(&db, &bodies); + let conn = quicksearch_core::db::open::open_search_reader(&db.to_string_lossy()) + .expect("open the seeded index"); + + let mut lcg = Lcg::new(0x5ca1ab1e); + let mut checked = 0usize; + let mut below_floor = 0usize; + + for &cap in caps() { + for len in sweep_lengths() { + for _ in 0..iters_per_len() { + let doc = lcg.next() as usize % bodies.len(); + let body = &bodies[doc]; + let Some(original) = substring_of(body, len, &mut lcg) else { + continue; + }; + + let mut chars: Vec = original.chars().collect(); + let planned = edit_budget(original.len(), cap).unwrap_or(0); + let edits = if planned == 0 { + 0 + } else { + lcg.next() as usize % (planned + 1) + }; + for _ in 0..edits { + corrupt(&mut chars, &mut lcg); + } + let term: String = chars.into_iter().collect(); + if term.trim().is_empty() { + continue; + } + + // **The cascade does not search the string typed at it.** The + // query goes through the lexer first, and a term cut out of + // real document text is full of things the lexer acts on: + // whitespace is stripped and re-joined, `*` becomes a wildcard, + // `key:value` may become a filter, `"` opens a phrase. The + // first thing this harness found was a three-character term + // `" Qi"` whose leading space the lexer drops, leaving two + // characters — below the fuzzy floor, so no matcher is built + // and no document can be found. That is correct behaviour, and + // asserting against the raw string called it a lost hit. + // + // So every decision below is made against the *parsed* term, + // exactly as the passes make it. + let Ok(split) = split_for_cascade(&term) else { + // A term that parses to an error (a `regex:` fragment with + // bad syntax, a filter key with an unusable value) is not a + // fuzzy search at all. + continue; + }; + if split.pattern.is_wildcard() || split.regex.is_some() { + // "Bitap is a literal matcher; wildcard terms don't fuzz" + // — the fuzzy passes decline outright, so there is no + // recall to demand. + continue; + } + let effective = split.term.as_str(); + + let Some(k) = edit_budget(effective.len(), cap) else { + // Below the fuzzy floor (or past Bitap's 64-byte ceiling): + // the pass must not run, so there is nothing to demand of + // it beyond not crashing. + below_floor += 1; + let _ = search_ids(&conn, &term, cap); + continue; + }; + if Bitap::new(effective.as_bytes(), k).is_none() { + let _ = search_ids(&conn, &term, cap); + continue; + } + + // The budget is over bytes; only assert recall when the term + // really is within it. + if oracle_distance(effective.as_bytes(), body.as_bytes()) > k { + continue; + } + + let found = search_ids(&conn, &term, cap); + assert!( + found.contains(&ids[doc]), + "lost the document the term came from\n typed {:?}\n \ + parsed {:?}\n original {:?}\n cap {} k {} edits {}\n \ + chunks {:?}\n body {:?}", + term, + effective, + original, + cap, + k, + edits, + pigeonhole_chunks(effective, k), + &body.chars().take(120).collect::(), + ); + checked += 1; + } + } + } + + eprintln!( + "fuzzy prefilter fuzz: {} recall assertions, {} terms below the fuzzy floor", + checked, below_floor + ); + assert!( + checked > 200, + "only {} recall assertions ran; the generator is not producing \ + in-budget terms", + checked + ); + + drop(conn); + std::fs::remove_file(&db).ok(); +} + +/// The two-sided property, against a brute-force oracle over the **whole** +/// corpus rather than just the document the term came from. +/// +/// Recall alone says the prefilter did not lose the one hit we planted; it says +/// nothing about the other fifty-nine documents. This checks both directions: +/// +/// * **No lost hits** — every document within `k` edits of the term appears in +/// the results, at whatever stage the cascade files it under. This is the +/// direction the prefilter can break, and the one with no visible symptom. +/// * **No invented hits** — every stage-8 (fuzzy content) hit really is within +/// `k` edits. The prefilter is only a superset, so it must not admit anything +/// the verification below it should have rejected. +/// +/// A true oracle, not a comparison against the pre-prefilter code path: a bug +/// living in `Bitap` itself would be present in both cascade paths and a +/// differential between them would agree, happily, on the wrong answer. +/// +/// Far fewer iterations than the recall sweep, because it runs a Levenshtein DP +/// over every document per iteration. +#[test] +fn every_document_within_the_budget_is_found_and_nothing_outside_it_is() { + const ITERS: usize = 5; + + let bodies = bodies(); + let db = scratch_db("fuzzprefilter-oracle"); + let ids = seed(&db, &bodies); + let conn = quicksearch_core::db::open::open_search_reader(&db.to_string_lossy()) + .expect("open the seeded index"); + + let mut lcg = Lcg::new(0xd1ce); + let mut compared = 0usize; + + for &cap in caps() { + for len in sweep_lengths() { + for _ in 0..ITERS { + let doc = lcg.next() as usize % bodies.len(); + let Some(original) = substring_of(&bodies[doc], len, &mut lcg) else { + continue; + }; + let mut chars: Vec = original.chars().collect(); + let planned = edit_budget(original.len(), cap).unwrap_or(0); + let edits = if planned == 0 { + 0 + } else { + lcg.next() as usize % (planned + 1) + }; + for _ in 0..edits { + corrupt(&mut chars, &mut lcg); + } + let term: String = chars.into_iter().collect(); + if term.trim().is_empty() { + continue; + } + let Ok(split) = split_for_cascade(&term) else { + continue; + }; + if split.pattern.is_wildcard() || split.regex.is_some() { + continue; + } + let effective = split.term.as_str(); + let Some(k) = edit_budget(effective.len(), cap) else { + continue; + }; + if Bitap::new(effective.as_bytes(), k).is_none() { + continue; + } + + let found = search_ids(&conn, &term, cap); + for (i, body) in bodies.iter().enumerate() { + let within = oracle_distance(effective.as_bytes(), body.as_bytes()) <= k; + if within { + assert!( + found.contains(&ids[i]), + "lost a hit the oracle says is within {} edits\n \ + parsed {:?}\n doc {} {:?}\n chunks {:?}", + k, + effective, + i, + &body.chars().take(80).collect::(), + pigeonhole_chunks(effective, k), + ); + } + } + compared += 1; + } + } + } + + eprintln!("prefilter oracle: {} queries compared corpus-wide", compared); + assert!(compared > 50, "only {} queries compared", compared); + + drop(conn); + std::fs::remove_file(&db).ok(); +} + +// --------------------------------------------------------------------------- +// The regex prefilter +// --------------------------------------------------------------------------- + +/// Rewrite `sub` into a regex that still matches it. +/// +/// The same trick as the fuzzy generator, in the other direction: rather than +/// corrupt the text and rely on an edit budget, this loosens the *pattern* in +/// ways that provably preserve the match, so the source document is once again +/// a known-correct answer. Each transformation keeps `sub` in the language: +/// `.` matches any one character (the corpus has no newlines), a class +/// containing the character matches it, an alternation offering it matches it, +/// `?` and `+` both admit exactly one occurrence. +/// +/// The point is to reach patterns whose required-literal set is interesting: +/// a class or an alternation splits one literal into several, a `?` splits the +/// set into "with" and "without", and a leading `.*` destroys the prefix set +/// entirely so only the suffix set can save it. +fn regexify(sub: &str, lcg: &mut Lcg) -> String { + let esc = |c: char| regex::escape(&c.to_string()); + let mut out = String::new(); + for c in sub.chars() { + // Most characters stay literal, or the pattern stops resembling + // anything a person would type and every literal set goes empty. + match lcg.next() % 10 { + 0 if c != '\n' => out.push('.'), + 1 => out.push_str(&format!("[{}z]", esc(c))), + 2 => out.push_str(&format!("(?:{}|zzq)", esc(c))), + 3 => out.push_str(&format!("{}?", esc(c))), + 4 => out.push_str(&format!("{}+", esc(c))), + _ => out.push_str(&esc(c)), + } + } + match lcg.next() % 6 { + 0 => format!(".*{out}"), + 1 => format!("{out}.*"), + _ => out, + } +} + +/// Every document the regex matches is found, and nothing else is. +/// +/// Set equality, not recall: the regex passes accept a row when the pattern +/// matches its name, its path or its body, and all three are computable here. +/// So this pins the prefilter from both sides at once — it may not lose a row, +/// and the rows it lets through must still be verified rather than admitted on +/// the strength of holding a literal. +#[test] +fn a_regex_finds_exactly_the_documents_it_matches() { + let bodies = bodies(); + let db = scratch_db("prefilter-regex"); + let ids = seed(&db, &bodies); + let conn = quicksearch_core::db::open::open_search_reader(&db.to_string_lossy()) + .expect("open the seeded index"); + + let mut lcg = Lcg::new(0xb0a7); + let mut checked = 0usize; + let mut with_prefilter = 0usize; + + for len in sweep_lengths() { + for _ in 0..iters_per_len().min(40) { + let doc = lcg.next() as usize % bodies.len(); + let Some(sub) = substring_of(&bodies[doc], len, &mut lcg) else { + continue; + }; + let pattern = regexify(sub, &mut lcg); + let query = format!("regex:\"{}\"", pattern); + // Anything the query parser does not hand back verbatim is not a + // test of the prefilter — a pattern carrying a quote, or one the + // lexer splits. Round-tripping is the cheapest way to say so. + let Ok(split) = split_for_cascade(&query) else { + continue; + }; + let Some(re) = split.regex.as_ref() else { + continue; + }; + if re.source != pattern { + continue; + } + if re.required().is_some() { + with_prefilter += 1; + } + + // The oracle: the pass accepts a row when the pattern matches any + // of the three fields it looks at. + let mut want: Vec = Vec::new(); + for (i, body) in bodies.iter().enumerate() { + let name = format!("row{:04}.bin", i); + let path = format!("/fuzz/{}", name); + if re.is_match(body) || re.is_match(&name) || re.is_match(&path) { + want.push(ids[i]); + } + } + want.sort(); + + let mut got = regex_search_ids(&conn, &query); + got.sort(); + + assert_eq!( + got, + want, + "\n pattern {:?}\n from {:?}\n literals {:?}", + pattern, + sub, + re.required().map(|r| r.literals().to_vec()), + ); + checked += 1; + } + } + + eprintln!( + "regex prefilter: {} patterns compared corpus-wide, {} of them prefiltered", + checked, with_prefilter + ); + assert!(checked > 100, "only {} patterns compared", checked); + assert!( + with_prefilter > checked / 4, + "only {} of {} patterns produced a prefilter; the generator is not \ + reaching the path under test", + with_prefilter, + checked + ); + + drop(conn); + std::fs::remove_file(&db).ok(); +} + +/// Run a regex-only search and collect the file ids it found. +fn regex_search_ids(conn: &rusqlite::Connection, query: &str) -> Vec { + let split = split_for_cascade(query).expect("checked by the caller"); + let latest = AtomicU64::new(1); + let options = SearchOptions { + limit: 100_000, + ..SearchOptions::default() + }; + let mut ids = Vec::new(); + let mut sink = |hits: Vec| ids.extend(hits.iter().map(|h| h.file_id)); + cascade::run(conn, &split, &options, 1, &latest, &mut sink).expect("the cascade runs"); + ids.sort(); + ids.dedup(); + ids +} + +/// Seed one row per body and return the file ids, in the same order. +fn seed(path: &std::path::Path, bodies: &[String]) -> Vec { + use quicksearch_core::db::repo::{insert_file, set_content_done, NewFile}; + use quicksearch_core::mime::FileType; + use quicksearch_core::testutil::zstd_of; + + let mut conn = + quicksearch_core::db::open_or_recreate(path.to_str().unwrap(), "trigram").unwrap(); + let tx = conn.transaction().unwrap(); + let mut ids = Vec::with_capacity(bodies.len()); + for (i, body) in bodies.iter().enumerate() { + let id = insert_file( + &tx, + &NewFile { + // Names deliberately share nothing with the bodies, so a hit + // can only come from the full-text pass and never from the + // filename tiers. + name: &format!("row{:04}.bin", i), + parent: "/fuzz/", + size: body.len() as u64, + mtime: 1_700_000_000, + mime: Some("text/plain"), + ftype: FileType::TEXT, + hash: None, + needs_content: true, + }, + ) + .unwrap() + .expect("unique path"); + set_content_done(&tx, id, body, zstd_of(body).as_deref()).unwrap(); + ids.push(id); + } + tx.commit().unwrap(); + conn.execute_batch("PRAGMA wal_checkpoint(TRUNCATE);").ok(); + ids +} diff --git a/crates/quicksearch-core/tests/search_alloc.rs b/crates/quicksearch-core/tests/search_alloc.rs new file mode 100644 index 0000000..a087e69 --- /dev/null +++ b/crates/quicksearch-core/tests/search_alloc.rs @@ -0,0 +1,587 @@ +//! What a search moves through the allocator. +//! +//! [`search_perf`](search_perf.rs) answers "how long does a keystroke take"; +//! this answers "how much does it allocate to get there", which is a different +//! question with a different answer and, until this existed, no way to measure +//! it from the repository at all. `db/repo.rs` already carries one finding of +//! exactly this kind — that `zstd::decode_all` was "27 of the 30 GiB a fuzzy +//! search moved through the allocator" — and that number came from tooling +//! nobody could re-run. +//! +//! # What is counted, and what is not +//! +//! This installs a `#[global_allocator]` that wraps [`System`] and counts every +//! Rust-side allocation. A global allocator is **per binary**, so this affects +//! only this test executable — the shipped `quicksearch` binary is untouched, +//! which is what makes an always-available accounting harness safe to keep. +//! +//! It deliberately does **not** see SQLite. The bundled SQLCipher amalgamation +//! calls libc `malloc` directly rather than going through Rust's `GlobalAlloc`, +//! so its page cache (32 MiB under [`PRAGMAS_SEARCH`]) and its record buffers +//! are invisible here. That is a feature: what is left is precisely the +//! cascade's own churn — the per-row `String`s, the document folds, the snippet +//! buffers — which is the part the code can do something about. +//! +//! # Reading the numbers +//! +//! - **allocs** is the count. It is the number to watch for per-row work: a +//! pass that scans the whole table and allocates once per row shows up here +//! as a figure proportional to the row count, and a fix shows up as a figure +//! proportional to the *hit* count. +//! - **bytes** is total traffic — allocation churn. High traffic with a low +//! peak means buffers being built and dropped in a loop. +//! - **peak live** is the high-water mark of outstanding bytes during the +//! query, and the only one of the three that speaks to footprint rather than +//! to churn. +//! +//! Timings are printed for orientation only. The counting allocator adds a +//! thread-local read-modify-write to every allocation, so this binary is +//! **not** where wall-clock is decided; `search_perf` is. +//! +//! # What it has measured so far +//! +//! 50,000 rows, 5,000 stored documents of ~2 KB, 32 MiB index. Baseline is the +//! cascade as it stood before this round of work; each column after it is +//! cumulative. +//! +//! | case | allocs | → after | bytes | → after | time | → after | +//! |---|---:|---:|---:|---:|---:|---:| +//! | no match | 14 | 14 | 0.0 | 0.0 | 2.5 ms | 2.5 ms | +//! | literal, rare | 226 | 226 | 0.0 | 0.0 | 2.5 ms | 2.6 ms | +//! | wildcard, rare | 50,324 | **348** | 1.2 MiB | 0.0 | 11.5 ms | **2.6 ms** | +//! | fuzzy, rare | 150,134 | **242** | 4.0 MiB | 0.0 | 62.1 ms | **17.4 ms** | +//! | regex, literal | 50,221 | **283** | 1.3 MiB | 0.1 MiB | 22.4 ms | **2.7 ms** | +//! | regex, no literal | — | 46 | — | 0.0 | — | 25.0 ms | +//! | common (capped) | 4,056 | 4,056 | 0.6 MiB | 0.6 MiB | 1.4 ms | 1.5 ms | +//! +//! (`content, many` and `regex, no literal` were added after the baseline was +//! taken — the first to give the full-text pass real verification work, the +//! second to keep the regex prefilter's *limit* as visible as its win. Neither +//! has a "before" column. The 25 ms in the last row is not a regression: it is +//! what a `regex:` query cost before this work and still costs when the pattern +//! offers no literal to filter on, which is the honest shape of the feature.) +//! +//! What the table is the reason for keeping: +//! +//! * borrowing the row's name instead of allocating one per scanned row — the +//! 50,324 and 150,134 figures were exactly one and three allocations per row; +//! * folding inside the bitap mask table rather than folding each haystack, +//! which took the fuzzy pass's remaining two-per-row to nothing; +//! * a `LIKE` prefilter for multi-segment wildcards, which had been scanning +//! with no SQL filter at all — the whole of the wildcard row's time saving; +//! * the pigeonhole trigram prefilter on the fuzzy full-text pass; +//! * a non-cryptographic hasher for the emitted-id set, worth ~5% of a fuzzy +//! search (see `cascade::IdHasher`); +//! * required-literal prefilters on both `regex:` passes, which had been +//! running the user's pattern over every name, every path and every stored +//! document — the same `Required` machinery the fuzzy pass uses, fed by the +//! literal analysis the regex engine already does for its own prefilter. +//! +//! And what it argued *against*, each recorded as a losing arm in +//! `benches/search.rs`: a `memchr2` candidate scan for the case-insensitive +//! filename probe, and hoisting `memmem::Finder` construction out of the +//! full-text pass. Both are obvious-looking and neither is measurable. +//! +//! Two things this table is worth reading carefully for. **Allocation churn and +//! wall-clock are not the same axis**: the first two changes removed 99.8% of +//! the allocations and moved the clock barely at all, because the fuzzy pass's +//! cost was zstd and bitap rather than malloc. And **the two big wins are both +//! the same idea**: work out what must be present for a row to match, and let +//! the database reject the rest. That took wildcards from 11.5 ms to 2.6, +//! fuzzy from 62 to 17, and `regex:` from 22 to 2.7 — where the per-row +//! micro-optimisations, measured honestly, were worth nothing at all. +//! +//! Take timings on a quiet machine. The allocation columns are deterministic +//! and reproduce bit-for-bit under any load; the time column does not, and a +//! busy box inflates it by 2-3x across the board. +//! +//! Gated by `QSB_SEARCH_ALLOC` so the harness doesn't pay the seed cost on +//! every `cargo test`. To run it: +//! +//! ```text +//! QSB_SEARCH_ALLOC=1 cargo test --release -p quicksearch-core \ +//! --test search_alloc -- --nocapture +//! ``` +//! +//! [`PRAGMAS_SEARCH`]: quicksearch_core::db::schema::PRAGMAS_SEARCH +//! [`System`]: std::alloc::System + +use std::alloc::{GlobalAlloc, Layout, System}; +use std::cell::Cell; +use std::sync::atomic::AtomicU64; +use std::time::{Duration, Instant}; + +use quicksearch_core::query::split::split_for_cascade; +use quicksearch_core::search::{cascade, SearchHit, SearchOptions}; + +mod common; +use common::{scratch_db, seed_index, SeedSpec}; + +// --------------------------------------------------------------------------- +// The counting allocator +// --------------------------------------------------------------------------- + +// Counters are **per thread**, not global, and that is load-bearing rather +// than an optimization. +// +// libtest runs `#[test]` functions on concurrent threads in one process, and +// there is only one allocator. With global counters, another test's harness +// setup — libtest allocates an output-capture buffer per test, before the test +// body can take any lock of ours — lands inside whatever region is open here +// and is charged to it. That is not hypothetical: it is what the self-test +// below caught, twice, and no mutex in this file can fix it because the +// offending allocation happens before the other test body runs at all. +// +// Per-thread counting is immune to that, and is also the more precise +// question: `cascade::run` is synchronous and does its work on the calling +// thread, so "what did this thread allocate" *is* "what did the cascade +// allocate". +// +// `const`-initialized `Cell`s, deliberately. A `thread_local!` with a lazy +// initializer would allocate on first touch — from inside the allocator — and +// one with a destructor can panic when touched during thread teardown, which +// is exactly when the last deallocations happen. `Cell` has no `Drop`, so +// neither hazard exists. +// `LIVE` and `PEAK` are **signed**, and that is not fussiness. +// +// Per-thread accounting is inherently asymmetric: a buffer allocated on one +// thread and freed on another decrements a counter that never incremented, so +// a thread's live total legitimately goes negative. libtest does exactly this +// — a test thread starts life having freed more than it allocated. Held as +// `u64` that reads as ~1.8e19, and `PEAK.max(live)` then latches onto it and +// never moves again, so every peak in the table would be reported as 8 bytes. +// That was not a hypothetical either; it is what the self-test caught on the +// third attempt, and it is why the counts are `u64` (they only ever rise) and +// the balances are `i64`. +thread_local! { + static ALLOCS: Cell = const { Cell::new(0) }; + static REALLOCS: Cell = const { Cell::new(0) }; + static BYTES: Cell = const { Cell::new(0) }; + static LIVE: Cell = const { Cell::new(0) }; + static PEAK: Cell = const { Cell::new(0) }; +} + +/// Read one monotonic counter, tolerating a thread whose locals are gone. +#[inline] +fn get(counter: &'static std::thread::LocalKey>) -> u64 { + counter.try_with(Cell::get).unwrap_or(0) +} + +/// Add to one monotonic counter, skipping a thread whose locals are gone. +#[inline] +fn bump(counter: &'static std::thread::LocalKey>, by: u64) -> u64 { + counter + .try_with(|c| { + let v = c.get().wrapping_add(by); + c.set(v); + v + }) + .unwrap_or(0) +} + +/// Read one signed balance. +#[inline] +fn get_live(counter: &'static std::thread::LocalKey>) -> i64 { + counter.try_with(Cell::get).unwrap_or(0) +} + +/// Move the live balance and return the new value. +#[inline] +fn bump_live(by: i64) -> i64 { + LIVE.try_with(|c| { + let v = c.get().wrapping_add(by); + c.set(v); + v + }) + .unwrap_or(0) +} + +/// Raise the high-water mark to `live` if it is higher. +#[inline] +fn note_peak(live: i64) { + PEAK.try_with(|p| p.set(p.get().max(live))).ok(); +} + +/// `System`, with counters. Every hook delegates and then accounts; a failed +/// allocation is not counted, so the totals describe memory that really +/// existed. +struct Counting; + +#[inline] +fn note_alloc(size: usize) { + bump(&ALLOCS, 1); + bump(&BYTES, size as u64); + note_peak(bump_live(size as i64)); +} + +unsafe impl GlobalAlloc for Counting { + unsafe fn alloc(&self, layout: Layout) -> *mut u8 { + let p = unsafe { System.alloc(layout) }; + if !p.is_null() { + note_alloc(layout.size()); + } + p + } + + unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 { + let p = unsafe { System.alloc_zeroed(layout) }; + if !p.is_null() { + note_alloc(layout.size()); + } + p + } + + /// Freeing on a thread that did not allocate drives this thread's balance + /// negative; see the note on the `thread_local!` block for why that is + /// ordinary and why the balance is signed. + unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) { + bump_live(-(layout.size() as i64)); + unsafe { System.dealloc(ptr, layout) } + } + + /// Counted as a resize rather than as a fresh allocation: a `Vec` doubling + /// its way up to a document's length is one buffer, not twelve, and calling + /// it twelve allocations would hide the difference between a reused buffer + /// and a per-row one — which is exactly what this harness exists to show. + /// Only the *growth* is added to traffic. + unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { + let p = unsafe { System.realloc(ptr, layout, new_size) }; + if !p.is_null() { + bump(&REALLOCS, 1); + let (old, new) = (layout.size() as u64, new_size as u64); + bump(&BYTES, new.saturating_sub(old)); + note_peak(bump_live(new as i64 - old as i64)); + } + p + } +} + +#[global_allocator] +static ALLOCATOR: Counting = Counting; + +/// Counter values at one instant. +#[derive(Clone, Copy)] +struct Counters { + allocs: u64, + reallocs: u64, + bytes: u64, + /// Signed: a thread's balance is legitimately negative. See the + /// `thread_local!` block. + live: i64, +} + +/// What happened between two instants. +#[derive(Clone, Copy)] +struct Usage { + allocs: u64, + reallocs: u64, + bytes: u64, + peak: u64, +} + +impl Counters { + /// Snapshot, and re-arm the peak tracker at the current live figure so the + /// high-water mark that follows belongs to the region being measured + /// rather than to whatever the process did before it. + fn start() -> Counters { + let live = get_live(&LIVE); + PEAK.with(|p| p.set(live)); + Counters { + allocs: get(&ALLOCS), + reallocs: get(&REALLOCS), + bytes: get(&BYTES), + live, + } + } + + fn since(&self) -> Usage { + Usage { + allocs: get(&ALLOCS).wrapping_sub(self.allocs), + reallocs: get(&REALLOCS).wrapping_sub(self.reallocs), + bytes: get(&BYTES).wrapping_sub(self.bytes), + // Above the live figure the region started from, so a query that + // holds nothing reads as zero rather than as the process floor. + peak: (get_live(&PEAK) - self.live).max(0) as u64, + } + } +} + +// --------------------------------------------------------------------------- +// The measurement +// --------------------------------------------------------------------------- + +/// Rows to seed. Smaller than `search_perf`'s 200k on purpose: allocation +/// counts are deterministic and scale linearly with rows scanned, so they need +/// no statistical settling — only enough rows that a per-row allocation is +/// unmistakable next to a per-hit one. +const NUM_FILES: usize = 50_000; + +// No serializing mutex here, deliberately: the counters are per thread, so +// concurrent tests in this binary cannot reach each other's regions. An +// earlier revision did lock, and it did not work — see the comment on the +// `thread_local!` block. + +fn enabled() -> bool { + std::env::var("QSB_SEARCH_ALLOC").is_ok() +} + +/// One query, described so the table says which cascade passes it exercises. +struct Case { + label: &'static str, + query: &'static str, + fuzzy: bool, + /// The passes this case is here to measure, for the table's last column. + passes: &'static str, +} + +/// The query set. +/// +/// Every case but the last is **rare on purpose**. A query that fills the +/// display limit makes `cascade::run` break out between passes, so a common +/// term measures how quickly the cascade gives up rather than what a scan +/// costs — and the passes this work targets never run at all. The rare cases +/// are also the ones a user actually waits on. +/// +/// Spread across the passes deliberately: a change that helps one pass and +/// hurts another must not be able to hide inside a single total. +const CASES: &[Case] = &[ + Case { + label: "no match", + query: "zzzznomatch", + fuzzy: false, + passes: "A, whole table, nothing accepted", + }, + Case { + label: "literal, rare", + query: "quartzite", + fuzzy: false, + passes: "A whole table + B verifies FTS hits", + }, + Case { + label: "wildcard, rare", + query: "quar*zite", + fuzzy: false, + passes: "A whole table, no prefilter today (S3)", + }, + Case { + label: "fuzzy, rare", + // One edit from the planted needle, so the exact passes miss and the + // fuzzy ones have to do the work. + query: "quartzyte", + fuzzy: true, + passes: "A + B + C + D, C and D whole-table (S1/S2/S4)", + }, + Case { + // The full-text pass with real work to do: the name `LIKE` finds + // nothing, so every hit is a document the trigram index returned and + // pass B had to decompress, fold and verify. + label: "content, many", + query: "chalcedony", + fuzzy: false, + passes: "A finds nothing + B verifies ~500 docs (S5/S7)", + }, + Case { + label: "regex, literal", + query: r"regex:quartz\w+", + fuzzy: false, + passes: "regex name + content, both prefiltered on \"quartz\"", + }, + Case { + // No literal to extract, so both regex passes still read everything. + // Kept beside the case above so the prefilter's *limit* is as visible + // as its win. + label: "regex, no literal", + query: r"regex:[0-9]{6}[a-y]{6}", + fuzzy: false, + passes: "regex name + content, no prefilter possible", + }, + Case { + label: "common (capped)", + query: "content", + fuzzy: false, + passes: "A, stops at the display limit", + }, +]; + +/// Run one query to completion on a held connection, reporting what it moved +/// through the allocator. +/// +/// Hits are counted, not kept: holding thousands of `SearchHit`s would measure +/// the harness's own `Vec` rather than the cascade's. The count is reported so +/// that a change which quietly alters the result set shows up here as well as +/// in `tests/cascade.rs`. +fn measure(conn: &rusqlite::Connection, case: &Case) -> (Usage, usize, Duration) { + let split = split_for_cascade(case.query).expect("the query set parses"); + let latest = AtomicU64::new(1); + let options = SearchOptions { + fuzzy: case.fuzzy, + limit: 1000, + ..SearchOptions::default() + }; + + let mut count = 0usize; + let mut sink = |hits: Vec| count += hits.len(); + + // Everything the query needs is built above; the snapshot brackets the + // cascade and nothing else. + let start = Counters::start(); + let clock = Instant::now(); + cascade::run(conn, &split, &options, 1, &latest, &mut sink).expect("the cascade runs"); + let elapsed = clock.elapsed(); + (start.since(), count, elapsed) +} + +fn mib(bytes: u64) -> String { + format!("{:.1}", bytes as f64 / (1024.0 * 1024.0)) +} + +/// Printed rather than asserted, for the reason `search_perf` gives: a +/// threshold on a shared machine gets muted rather than fixed. Allocation +/// counts are far more stable than timings, so a *ratchet* becomes reasonable +/// once the search work has landed and the numbers have settled — until then +/// this exists to be read when a change claims to have reduced churn. +#[test] +fn allocation_traffic_per_query() { + if !enabled() { + eprintln!("skipping: set QSB_SEARCH_ALLOC=1 to run"); + return; + } + + let db = scratch_db("searchalloc"); + let seeded = Instant::now(); + seed_index( + &db, + &SeedSpec { + files: NUM_FILES, + ..SeedSpec::default() + }, + ); + println!( + "seeded {} rows in {:.1?} ({} MiB on disk)\n", + NUM_FILES, + seeded.elapsed(), + std::fs::metadata(&db).map(|m| m.len()).unwrap_or(0) / (1024 * 1024) + ); + + // One connection for the whole run, as the search worker holds one across + // a typing session. Opened through the real entry point so the pragma + // profile is the production one. + let conn = quicksearch_core::db::open::open_search_reader(&db.to_string_lossy()) + .expect("open the seeded index"); + + println!( + "{:<16} {:>12} {:>10} {:>12} {:>12} {:>7} {:>9} {}", + "case", "allocs", "reallocs", "bytes (MiB)", "peak (MiB)", "hits", "time", "passes" + ); + for case in CASES { + // Once to warm the page cache and the statement cache, then measured: + // a cold first query would report SQLite's one-off setup as the + // cascade's churn. + let _ = measure(&conn, case); + let (usage, hits, elapsed) = measure(&conn, case); + println!( + "{:<16} {:>12} {:>10} {:>12} {:>12} {:>7} {:>9.1?} {}", + case.label, + usage.allocs, + usage.reallocs, + mib(usage.bytes), + mib(usage.peak), + hits, + elapsed, + case.passes, + ); + } + + println!( + "\n{} rows scanned per whole-table pass. An `allocs` figure at or above \ + that is per-row work;\nafter S1/S2 the scan passes should sit near their \ + hit counts instead.", + NUM_FILES + ); +} + +/// The accounting itself, so a number printed above is a number that means +/// something. A harness that silently stopped counting would read as a +/// spectacular optimization. +#[test] +fn the_counters_track_real_allocations() { + let start = Counters::start(); + // A `Vec` that grows by doubling is one buffer: one alloc, then reallocs. + let mut v: Vec = Vec::new(); + for _ in 0..64 * 1024 { + v.push(0); + } + let grown = start.since(); + assert_eq!(grown.allocs, 1, "a doubling Vec is one allocation"); + assert!(grown.reallocs > 0, "and several resizes"); + assert!( + grown.peak >= 64 * 1024, + "peak {} should cover the grown buffer", + grown.peak + ); + + // Dropping it returns the bytes: live falls back, so a later region's peak + // is not inflated by this one. + let before_drop = get_live(&LIVE); + drop(v); + assert!( + get_live(&LIVE) < before_drop, + "dealloc must decrement live bytes" + ); + + // The signedness the whole scheme turns on. Sink the balance below zero, as + // a thread that frees what another thread allocated really does, and check + // that a peak is still reported: held unsigned, that negative balance reads + // as ~1.8e19, `max` latches onto it, and every peak in the table is + // reported as a handful of bytes forever. + bump_live(-(1 << 20)); + let negative = Counters::start(); + assert!(negative.live < 0, "the balance is genuinely negative"); + let mut grow: Vec = Vec::with_capacity(32 * 1024); + grow.push(1); + let seen = negative.since().peak; + drop(grow); + assert!( + seen >= 32 * 1024, + "a negative live balance swallowed the peak: {}", + seen + ); + bump_live(1 << 20); // put back what was sunk, so later regions start clean + + // The property that makes the whole harness trustworthy under libtest's + // thread-per-test: another thread allocating hard does not touch this + // thread's counters. + // + // The thread is spawned and joined *outside* the region on purpose. + // `spawn` boxes the closure and allocates the `JoinHandle` on the calling + // thread, and `join` frees them there — so bracketing the spawn would + // measure this thread's own bookkeeping and report it as leakage. A + // barrier hands control across without allocating. + let barrier = std::sync::Arc::new(std::sync::Barrier::new(2)); + let child = { + let barrier = barrier.clone(); + std::thread::spawn(move || { + barrier.wait(); // the region is open + let noisy: Vec = (0..10_000).map(|i| format!("allocation {}", i)).collect(); + std::hint::black_box(noisy.len()); + barrier.wait(); // the noise is done + }) + }; + let quiet_across_threads = Counters::start(); + barrier.wait(); + barrier.wait(); + let leaked = quiet_across_threads.since(); + child.join().expect("the noisy thread finishes"); + assert_eq!( + (leaked.allocs, leaked.bytes), + (0, 0), + "another thread's allocations must not be charged to this region" + ); + + // A region that allocates nothing reports nothing, which is what makes + // "this pass no longer allocates per row" a statement the table can make. + let quiet = Counters::start(); + std::hint::black_box(1u64 + 1); + let idle = quiet.since(); + assert_eq!((idle.allocs, idle.bytes, idle.peak), (0, 0, 0)); +} diff --git a/crates/quicksearch-core/tests/snippet_perf.rs b/crates/quicksearch-core/tests/snippet_perf.rs index 700f804..e75a211 100644 --- a/crates/quicksearch-core/tests/snippet_perf.rs +++ b/crates/quicksearch-core/tests/snippet_perf.rs @@ -285,7 +285,7 @@ fn snippet_paths_perf_comparison() { None => String::new(), }; let folded = text.to_ascii_lowercase(); - let _snip = snippet::extract_folded(&text, &folded, &[q], &opts); + let _snip = snippet::extract_folded(&text, &folded, &[q], &opts).0; rows_b_total += 1; } } diff --git a/crates/quicksearch-gui/src/search_tab/tests.rs b/crates/quicksearch-gui/src/search_tab/tests.rs index 45e6d3e..e1f0e1f 100644 --- a/crates/quicksearch-gui/src/search_tab/tests.rs +++ b/crates/quicksearch-gui/src/search_tab/tests.rs @@ -5,6 +5,138 @@ fn new_tab() -> SearchTab { SearchTab::new(false, ColumnsConfig::default(), true) } +/// A tab whose rows all carry a **content** snippet, so the Content Match +/// column renders through `centered_match_job` rather than falling back to its +/// dash. That cell is the expensive one — it measures glyph advances across the +/// window to centre the match — so a render benchmark without it measures the +/// cheap half of the table. +fn tab_with_content_snippets(n: usize) -> SearchTab { + let mut tab = new_tab(); + tab.query = "quartzite".into(); + tab.focus_query = false; + // A full-width window with the match in the middle, as the cascade cuts + // them: `SNIPPET_WINDOW_CHARS` is 600. + let filler = "lorem ipsum dolor sit amet consectetur "; + let head = filler.repeat(8); + let tail = filler.repeat(8); + let window = format!("{head}quartzite{tail}"); + let at = head.len(); + tab.results = (0..n) + .map(|i| SearchHit { + file_id: i as i64, + name: format!("alpha_widget_{i}.txt"), + path: format!("/qs-test/deeply/nested/directory/tree/alpha_widget_{i}.txt"), + size: 116, + mtime: 1_700_000_000, + rank: 6.0, + stage: 6, + snippet: Some(Snippet { + window: window.clone(), + ranges: vec![(at, at + "quartzite".len())], + truncated_start: true, + truncated_end: true, + }), + }) + .collect(); + tab.order = (0..n as u32).collect(); + tab +} + +/// One frame with no input and no assertions — `run_frame` checks every glyph, +/// which is right for a correctness test and wrong for a timing one. +fn timed_frame(ctx: &egui::Context, tab: &mut SearchTab) { + let input = crate::test_ui::raw_input(egui::vec2(1400.0, 900.0), Vec::new()); + ctx.run(input, |ctx| { + egui::CentralPanel::default().show(ctx, |ui| { + tab.ui(ui); + }); + }); +} + +/// What a frame of the results table costs, printed rather than asserted. +/// +/// The table virtualizes, so the row count barely matters — what is measured is +/// the per-*visible*-row cost, which is where the Content Match and Path cells +/// re-measure their text against the column width on every frame. +/// +/// # What it says, and the change it argued against +/// +/// At 1400x900, three runs agreeing: +/// +/// | | per frame | attributable to rows | +/// |---|---:|---:| +/// | empty tab | 14.4 µs | — | +/// | 1000 rows, name only | 306 µs | 292 µs | +/// | 1000 rows, content snippets | 615 µs | 601 µs | +/// +/// So the Content Match column roughly doubles the cost of a row, and it is +/// the one cell that walks its text character by character asking the font for +/// glyph advances. That was enough to propose memoizing the computed cut per +/// row, keyed by column width and font. +/// +/// **The measurement says not to.** A 60 fps frame is 16,600 µs and the whole +/// table is 615 of them — under 4%. Halving the content cells would buy 0.9% of +/// a frame, in exchange for a cache that has to be invalidated on resize, on +/// theme change, and on every live-result update, which is three chances to +/// paint a stale highlight to save nothing anybody can see. +/// +/// The reason the loops are cheaper than they look is that they stop early: +/// `fits_within` gives up at the first character past the budget, so a 600-byte +/// window costs about as many glyph lookups as the column is wide, not 600. +/// +/// Re-read this before optimizing the row renderer. If the numbers above have +/// grown — a much taller viewport, a wider Content Match column, or per-frame +/// work added to a cell — the conclusion is worth revisiting; the harness is +/// here so that is a measurement rather than an argument. +/// +/// Gated so `cargo test` does not pay for it: +/// +/// ```text +/// QSB_RENDER_PERF=1 cargo test --release -p quicksearch-gui -- render_perf --nocapture +/// ``` +#[test] +fn render_perf() { + if std::env::var("QSB_RENDER_PERF").is_err() { + eprintln!("skipping: set QSB_RENDER_PERF=1 to run"); + return; + } + const FRAMES: u32 = 300; + let ctx = crate::test_ui::ctx(); + + // An empty tab is the floor: the query strip, the panel, egui's own + // per-frame work. Subtracting it is what turns the loaded figure into a + // statement about the *rows*, which is the only part this code controls. + let mut cases: Vec<(&str, std::time::Duration)> = Vec::new(); + for (label, mut tab) in [ + ("empty (floor)", new_tab()), + ("1000 rows, name only", tab_with_results(1000)), + ("1000 rows, content snippets", tab_with_content_snippets(1000)), + ] { + // Warm the galley cache and settle the column widths; the first frames + // of a table are a sizing pass and are not what a scrolling user pays. + for _ in 0..10 { + timed_frame(&ctx, &mut tab); + } + let start = std::time::Instant::now(); + for _ in 0..FRAMES { + timed_frame(&ctx, &mut tab); + } + cases.push((label, start.elapsed() / FRAMES)); + } + + let floor = cases[0].1; + for (label, each) in &cases { + println!( + "{:<30} {:>9.1?}/frame rows cost {:>9.1?} ({:.0} fps ceiling)", + label, + each, + each.saturating_sub(floor), + 1.0 / each.as_secs_f64(), + ); + } + println!("\n(a 60 fps budget is 16.6 ms; the table virtualizes, so this is per *visible* row)"); +} + fn tab_with_results(n: usize) -> SearchTab { let mut tab = new_tab(); tab.query = "alpha".into(); diff --git a/packaging/copyright b/packaging/copyright index d5d6d5e..3dc6a58 100644 --- a/packaging/copyright +++ b/packaging/copyright @@ -78,11 +78,15 @@ Comment: font data rather than as linked program code, which is the same basis on which Debian ships these fonts and other egui-based applications. . - One dependency is carried in-tree rather than fetched: vendor/pdf-extract + Two dependencies are carried in-tree rather than fetched. vendor/pdf-extract is pdf-extract 0.12.0 (MIT, Jeff Muizelaar, https://github.com/jrmuizel/pdf-extract) with two unbounded recursions - given a depth limit, marked "LOCAL PATCH" in the source. Its licence is - unchanged and is the MIT stanza below. + given a depth limit. vendor/rtf-parser is rtf-parser 0.4.3 (MIT, Dorian + Beauchesne, https://github.com/d0rianb/rtf-parser) with its lexer corrected + to end a control word where the RTF specification ends one, and a panic on + malformed Unicode escapes replaced by lossy decoding. Both sets of changes + are marked "LOCAL PATCH" in the source; both licences are unchanged and are + the MIT stanza below. . Run `cargo metadata --all-features` against the source tree to reproduce the per-crate licence list. diff --git a/vendor/rtf-parser/Cargo.toml b/vendor/rtf-parser/Cargo.toml new file mode 100644 index 0000000..967aef5 --- /dev/null +++ b/vendor/rtf-parser/Cargo.toml @@ -0,0 +1,58 @@ +# Derived from the Cargo-normalized manifest of rtf-parser 0.4.3 as published +# to crates.io. Four things differ, all of them removals — see +# vendor/rtf-parser/README.md and the `[patch.crates-io]` note in the workspace +# manifest for what and why this crate is carried in-tree at all. +# +# * The `examples/` targets are gone, because `examples/` is not vendored: +# the two of them load `.rtf` files from a directory the crate excludes +# from its own package, so they do not build from a published copy either. +# * `crate-type` loses `cdylib`. It exists for the crate's WebAssembly build, +# which is also what the `jsbindings` default feature is for; QuickSearch +# links the rlib and would otherwise pay for a shared object nothing loads. +# * The `default = ["jsbindings"]` feature and its two optional dependencies +# (`wasm-bindgen`, `tsify`) are gone. `quicksearch-core` already depends on +# this crate with `default-features = false`; deleting the feature outright +# means a future `cargo add` cannot quietly turn it back on and drag the +# wasm-bindgen tree into a desktop build. The `#[cfg(feature = +# "jsbindings")]` attributes in the source went with it — see README.md. +# * The `[profile.*]` sections are gone. Cargo ignores profiles in a +# non-workspace-root manifest and warns about them; the workspace's own +# release profile is what applies. + +[package] +edition = "2021" +name = "rtf-parser" +version = "0.4.3" +build = false +autolib = false +autobins = false +autoexamples = false +autotests = false +autobenches = false +description = "A Rust RTF parser & lexer library designed for speed and memory efficiency." +readme = "README.md" +keywords = [ + "rtf", + "rich", + "text", + "format", + "parser", +] +categories = [ + "parsing", + "parser-implementations", +] +license = "MIT" +repository = "https://github.com/d0rianb/rtf-parser" + +[lib] +name = "rtf_parser" +crate-type = ["lib"] +path = "src/lib.rs" + +[dependencies.serde] +version = "1.0" +features = ["derive"] + +[lints.clippy] +needless_return = "allow" diff --git a/vendor/rtf-parser/LICENSE.md b/vendor/rtf-parser/LICENSE.md new file mode 100644 index 0000000..14faf33 --- /dev/null +++ b/vendor/rtf-parser/LICENSE.md @@ -0,0 +1,7 @@ +Copyright (c) 2024 Dorian Beauchesne + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. \ No newline at end of file diff --git a/vendor/rtf-parser/README.md b/vendor/rtf-parser/README.md new file mode 100644 index 0000000..693fc8f --- /dev/null +++ b/vendor/rtf-parser/README.md @@ -0,0 +1,254 @@ + + +# rtf-parser +[![Crates.io](https://img.shields.io/crates/v/rtf-parser.svg?style=flat-square&color=orange)](https://crates.io/crates/rtf-parser) +![Crates.io License](https://img.shields.io/crates/l/rtf-parser?style=flat-square) +[![Crates.io Total Downloads](https://img.shields.io/crates/d/rtf-parser?label=Crates.io%20Downloads&style=flat-square&color=violet)](https://crates.io/crates/rtf-parser) +[![NPM Total Downloads](https://img.shields.io/npm/d18m/rtf-parser-wasm?label=NPM%20Downloads&style=flat-square&color=red)](https://www.npmjs.com/package/rtf-parser-wasm) +[![docs.rs](https://img.shields.io/docsrs/rtf-parser?style=flat-square)](https://docs.rs/rtf-parser) + +A safe Rust RTF parser & lexer library designed for speed and memory efficiency, with no external dependencies. + +It implements the last version of the RTF specification (1.9), with modern UTF-16 unicode support, including special characters (emdash, endash, quotes, etc) + +The official documentation is available at [docs.rs/rtf-parser](https://docs.rs/rtf-parser). + +## Installation +This library can be installed using cargo with the CLI : +```bash + cargo add rtf-parser + ``` +Or add `rtf-parser = ""` under **[dependencies]** in your `Cargo.toml`. + +If you want to use the WASM version in JavaScript, you can add this module via NPM : +```node +npm i rtf-parser-wasm +``` +Or add `"rtf-parser-wasm": ""` in the **dependencies** in your `package.json`. + +## Design +The library is split into 2 main components: +1. The lexer +2. The parser + +The lexer scans the document and returns a `Vec` which represent the RTF file in a code-understandable manner. +These tokens can then be passed to the parser to transcript it to a real document : `RtfDocument`. +```rust +use rtf_parser::{ Lexer, Token, Parser, RtfDocument }; + +fn main() -> Result<(), Box> { + let tokens: Vec = Lexer::scan("")?; + let parser = Parser::new(tokens); + let doc: RtfDocument = parser.parse()?; +} +``` + +or in a more concise way : + +```rust +use rtf_parser::RtfDocument; + +fn main() -> Result<(), Box> { + let doc: RtfDocument = RtfDocument::try_from("")?; +} +``` + +The `RtfDocument` struct implement the `TryFrom` trait for : +- `&str` +- `String` +- `&mut std::fs::File` + +and a `from_filepath` constructor that handle the i/o internally. + +The error returned can be a `LexerError` or a `ParserError` depending on the phase wich failed. + + +An `RtfDocument` is composed with : +- the **header**, containing among others the font table, the color table and the encoding. +- the **body**, which is a `Vec` + +A `StyledBlock` contains all the information about the formatting of a specific block of text. +It contains a `Painter` for the text style, a `Paragraph` for the layout, and the text (`String`). +The `Painter` is defined below, and the rendering implementation depends on the user. +```rust +pub struct Painter { + pub font_ref: FontRef, + pub font_size: u16, + pub bold: bool, + pub italic: bool, + pub underline: bool, + pub superscript: bool, + pub subscript: bool, + pub smallcaps: bool, + pub strike: bool, +} +``` + +The layout information are exposed in the `paragraph` property : +```rust +pub struct Paragraph { + pub alignment: Alignment, + pub spacing: Spacing, + pub indent: Indentation, + pub tab_width: i32, +} +``` +It defined the way a block is aligned, what spacing it uses, etc... + +You also can extract the text without any formatting information, with the `to_text()` method of the `RtfDocument` struct. + +```rust +fn main() -> Result<(), Box> { + let rtf = r#"{\rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard Voici du texte en {\b gras}.\par}"#; + let tokens = Lexer::scan(rtf)?; + let document = Parser::new(tokens)?; + let text = document.to_text(); + assert_eq!(text, "Voici du texte en gras."); +} +``` + +## Examples +A complete example of rtf parsing is presented below : +```rust +use rtf_parser::Lexer; +use rtf_parser::Parser; + +fn main() -> Result<(), Box> { + let rtf_text = r#"{ \rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard Voici du texte en {\b gras}.\par }"#; + let tokens = Lexer::scan(rtf_text)?; + let doc = Parser::new(tokens).parse()?; + assert_eq!( + doc.header, + RtfHeader { + character_set: Ansi, + color_table: ColorTable::Default(), + font_table: FontTable::from([ + (0, Font { name: "Helvetica", character_set: 0, font_family: Swiss }) + ]) + } + ); + assert_eq!( + doc.body, + [ + StyleBlock { + painter: Painter { font_ref: 0, font_size: 0, bold: false, italic: false, underline: false }, + paragraph: Paragraph { + alignment: LeftAligned, + spacing: Spacing { before: 0, after: 0, between_line: Auto, line_multiplier: 0, }, + indent: Indentation { left: 0, right: 0, first_line: 0, }, + tab_width: 0, + }, + text: "Voici du texte en ", + }, + StyleBlock { + painter: Painter { font_ref: 0, font_size: 0, bold: true, italic: false, underline: false }, + paragraph: Paragraph { + alignment: LeftAligned, + spacing: Spacing { before: 0, after: 0, between_line: Auto, line_multiplier: 0, }, + indent: Indentation { left: 0, right: 0, first_line: 0, }, + tab_width: 0, + }, + text: "gras", + }, + StyleBlock { + painter: Painter { font_ref: 0, font_size: 0, bold: false, italic: false, underline: false }, + paragraph: Paragraph { + alignment: LeftAligned, + spacing: Spacing { before: 0, after: 0, between_line: Auto, line_multiplier: 0, }, + indent: Indentation { left: 0, right: 0, first_line: 0, }, + tab_width: 0, + }, + text: ".", + }, + ] + ); + return Ok(()); +} +``` + +# WASM +This crate also compiles to WASM, and exposes the function `parse_rtf` to JS & TS, with proper type declarations. +The TS API is the same as the Rust one, except for the `Lexer` & the `Parser`. Due to performance reasons, those can't be exposed directly in JS and are internally used in WASM. + +## With NPM +To use this module with NPM, you have to import it and initialize it : +```ts +import init, { parse_rtf } from 'rtf-parser-wasm' +init().then(() => { + let document = parse_rtf("") +}) +``` + +## Without NPM +You have to downlod the `pkg/` folder, and then import the `rtf_parser.js` script. +```ts +import init, { parse_rtf } from '../pkg/rtf_parser.js' +``` +A complete example is provided in `examples/wasm/`. + +### Vite +If you are using Vite, don't forget to add this snippet to your `vite.config.js`, for the WASM to be served correctly : +```ts +import { defineConfig } from 'vite' + +export default defineConfig({ + optimizeDeps: { + exclude: ["rtf-parser-wasm"] + } +}) +``` + +## Known limitations +For now, the `\bin` keyword is not taken into account. As its content is text in binary format, it can mess with the lexing algorithm, and crash the program. +Future support for the binary will soon come. + +The base64 images are not supported as well, but can safely be parsed. + +## Benchmark +For now, there is no comparable crates to [`rtf-parser`](https://crates.io/crates/rtf-parser). +However, the `rtf-grimoire` crate provide a similar *Lexer*. Here is a quick benchmark of the lexing and parsing of a [500kB rtf document](./resources/tests/file-sample_500kB.rtf). + +| Crate | Version | Duration | +|-----------------------------------------------------------------------|:-------:|---------:| +| [`rtf-parser`](https://crates.io/crates/rtf-parser) | v0.3.0 | _7 ms_ | +| [`rtf-grimoire`](https://crates.io/crates/rtf-grimoire) (only lexing) | v0.2.1 | _13 ms_ | + +*This benchmark has been run on an Intel MacBook Pro, with the release build*. + + + diff --git a/vendor/rtf-parser/src/document.rs b/vendor/rtf-parser/src/document.rs new file mode 100644 index 0000000..e0bc15b --- /dev/null +++ b/vendor/rtf-parser/src/document.rs @@ -0,0 +1,96 @@ +use std::error::Error; +use std::fs; +use std::io::Read; + +use serde::{Deserialize, Serialize}; + +use crate::header::RtfHeader; +use crate::lexer::Lexer; +use crate::parser::{Parser, StyleBlock}; + +// Interface to WASM to be used in JS +pub fn parse_rtf(rtf: String) -> RtfDocument { + return RtfDocument::try_from(rtf).unwrap(); +} + +#[derive(Debug, Default, Clone, PartialEq, Deserialize, Serialize)] +pub struct RtfDocument { + pub header: RtfHeader, + pub body: Vec, +} + +// Create a RTF document from a String content +impl TryFrom for RtfDocument { + type Error = Box; + fn try_from(file_content: String) -> Result { + let tokens = Lexer::scan(file_content.as_str())?; + let document = Parser::new(tokens).parse()?; + return Ok(document); + } +} + +// Create a RTF document from file content +impl TryFrom<&str> for RtfDocument { + type Error = Box; + fn try_from(file_content: &str) -> Result { + let tokens = Lexer::scan(file_content)?; + let document = Parser::new(tokens).parse()?; + return Ok(document); + } +} + +// Create an RTF document from a file +impl TryFrom<&mut fs::File> for RtfDocument { + type Error = Box; + fn try_from(file: &mut fs::File) -> Result { + let mut file_content = String::new(); + file.read_to_string(&mut file_content)?; + return Self::try_from(file_content); + } +} + +impl RtfDocument { + /// Create an `RtfDocument` from a rtf file path + pub fn from_filepath(filename: &str) -> Result> { + let file_content = fs::read_to_string(filename)?; + return Self::try_from(file_content); + } + + /// Get the raw text of an RTF document + pub fn get_text(&self) -> String { + let mut result = String::new(); + for style_block in &self.body { + result.push_str(&style_block.text); + } + return result; + } +} + +#[cfg(test)] +pub(crate) mod tests { + use super::*; + use crate::document::RtfDocument; + + #[test] + fn get_text_from_document() { + let rtf = r#"{ \rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard Voici du texte en {\b gras}.\par }"#; + let document = RtfDocument::try_from(rtf).unwrap(); + // LOCAL PATCH (QuickSearch): the trailing newline is `\par`, which now + // emits a line break like `\line` does instead of nothing. + assert_eq!(document.get_text(), "Voici du texte en gras.\n") + } + + #[test] + fn create_document_from_file() { + let mut file = fs::File::open("./resources/tests/test-file.rtf").unwrap(); + let document = RtfDocument::try_from(&mut file).unwrap(); + assert_eq!(document.header.font_table.get(&0).unwrap().name, String::from("Helvetica")); + } + + #[test] + fn create_document_from_filepath() { + let filename = "./resources/tests/test-file.rtf"; + let document = RtfDocument::from_filepath(filename).unwrap(); + assert_eq!(document.header.font_table.get(&0).unwrap().name, String::from("Helvetica")); + } +} diff --git a/vendor/rtf-parser/src/header.rs b/vendor/rtf-parser/src/header.rs new file mode 100644 index 0000000..1874048 --- /dev/null +++ b/vendor/rtf-parser/src/header.rs @@ -0,0 +1,105 @@ +use std::collections::HashMap; + +use serde::{Deserialize, Serialize}; + +use crate::paragraph::Paragraph; +use crate::parser::Painter; +use crate::tokens::{ControlWord, Token}; + +/// The ColorRef represent the index of the color in the ColorTable +/// It's use in the document's body to reference a specific color with the \cfN or \cbN control words +pub type ColorRef = u16; +pub type ColorTable = HashMap; + +/// The FontRef represent the index of the color in the FontTable +/// It's use in the document's body to reference a specific font with the \fN control word +pub type FontRef = u16; +pub type FontTable = HashMap; + +/// The StyleRef represent the index of the style in the StyleSheet +/// It's use in the document's body to reference a specific style with the \sN control word +pub type StyleRef = u16; +pub type StyleSheet = HashMap; + +/// Style for the StyleSheet +#[derive(Hash, Default, Debug, Clone, PartialEq, Deserialize, Serialize)] +pub struct Style { + /// The style attributes + painter: Painter, + /// The layout attributes + paragraph: Paragraph, +} + +/// Information about the document, including references to fonts & styles +#[derive(Default, Debug, Clone, PartialEq, Deserialize, Serialize)] +pub struct RtfHeader { + pub character_set: CharacterSet, + pub font_table: FontTable, + pub color_table: ColorTable, + pub stylesheet: StyleSheet, +} + +#[derive(Hash, Default, Clone, Debug, PartialEq, Deserialize, Serialize)] +pub struct Font { + pub name: String, + pub character_set: u8, + pub font_family: FontFamily, +} + +#[derive(Hash, Default, Clone, Debug, PartialEq, Deserialize, Serialize)] +pub struct Color { + pub red: u8, + pub green: u8, + pub blue: u8, +} + +#[allow(dead_code)] +#[derive(Debug, PartialEq, Default, Clone, Hash, Deserialize, Serialize)] +pub enum CharacterSet { + #[default] + Ansi, + Mac, + Pc, + Pca, + Ansicpg(u16), +} + +impl CharacterSet { + pub fn from(token: &Token) -> Option { + match token { + Token::ControlSymbol((ControlWord::Ansi, _)) => Some(Self::Ansi), + // TODO: implement the rest + _ => None, + } + } +} + +#[allow(dead_code)] +#[derive(Debug, PartialEq, Hash, Clone, Default, Deserialize, Serialize)] +pub enum FontFamily { + #[default] + Nil, + Roman, + Swiss, + Modern, + Script, + Decor, + Tech, + Bidi, +} + +impl FontFamily { + pub fn from(string: &str) -> Option { + match string { + r"\fnil" => Some(Self::Nil), + r"\froman" => Some(Self::Roman), + r"\fswiss" => Some(Self::Swiss), + r"\fmodern" => Some(Self::Modern), + r"\fscript" => Some(Self::Script), + r"\fdecor" => Some(Self::Decor), + r"\ftech" => Some(Self::Tech), + r"\fbidi" => Some(Self::Bidi), + _ => None, + } + } +} diff --git a/vendor/rtf-parser/src/lexer.rs b/vendor/rtf-parser/src/lexer.rs new file mode 100644 index 0000000..95e9433 --- /dev/null +++ b/vendor/rtf-parser/src/lexer.rs @@ -0,0 +1,366 @@ +use std::fmt; + +use crate::tokens::{ControlWord, Property, Token}; +use crate::utils::StrUtils; +use crate::{recursive_tokenize, recursive_tokenize_with_init}; + +#[derive(Debug, Clone)] +pub enum LexerError { + Error(String), + InvalidUnicode(String), + InvalidLastChar, +} + +impl std::error::Error for LexerError {} + +impl fmt::Display for LexerError { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let _ = write!(f, "[RTF Lexer] : "); + let _ = match self { + LexerError::InvalidLastChar => write!(f, "Invalid last char, should be '}}'"), + LexerError::InvalidUnicode(uc) => write!(f, "Invalid unicode : {uc}"), + LexerError::Error(msg) => write!(f, "{}", msg), + }; + return Ok(()); + } +} + +impl From for LexerError { + fn from(value: std::str::Utf8Error) -> Self { + return LexerError::Error(value.to_string()); + } +} + +impl From for LexerError { + fn from(value: std::num::ParseIntError) -> Self { + return LexerError::Error(value.to_string()); + } +} + +pub struct Lexer; + +impl Lexer { + pub fn scan(src: &str) -> Result>, LexerError> { + let src = src.trim(); // Sanitize src : Trim the leading whitespaces + + let mut tokens: Vec = vec![]; + let mut slice_start_index = 0; + let mut previous_char = ' '; + + for (current_index, c) in src.char_indices() { + match c { + // TODO: Handle char over code 127 for escaped chars + // Handle Escaped chars : "\" + any charcode below 127 + '{' | '}' | '\\' | '\n' if previous_char == '\\' => {} + '{' | '}' | '\\' | '\n' => { + // End of slice chars + if slice_start_index < current_index { + // Close slice + let slice = &src[slice_start_index..current_index]; + // Get the corresponding token(s) + let slice_tokens = Self::tokenize(slice)?; + tokens.extend_from_slice(&slice_tokens.as_slice()); + slice_start_index = current_index; + } + } + // Others chars + _ => {} + } + previous_char = c; + } + // Manage last token (should always be "}") + if slice_start_index < src.len() { + let slice = &src[slice_start_index..]; + if slice != "}" { + return Err(LexerError::InvalidLastChar); + } + tokens.push(Token::ClosingBracket); + } + return Ok(tokens); + } + + /// Get a string slice cut but the scanner and return the coreesponding token(s) + fn tokenize(slice: &str) -> Result>, LexerError> { + let mut starting_chars = slice.trim_matches(' ').chars().take(2); + return match (starting_chars.next(), starting_chars.next()) { + // If it starts with \ : escaped text or control word + (Some('\\'), Some(c)) => match c { + '{' | '}' | '\\' => { + // Handle escaped chars + let tail = slice.get(1..).unwrap_or(""); + return Ok(vec![Token::PlainText(tail)]); // No recursive tokenize here, juste some plain text because the char is escaped + } + '\'' => { + // Escaped unicode in hex value : \'f0 + let tail = slice.get(1..).unwrap_or(""); + let Some(hex) = tail.get(1..3) else { + return Err(LexerError::InvalidUnicode(tail.into())); + }; + let byte = u8::from_str_radix(hex, 16)?; // f0 + // LOCAL PATCH (QuickSearch): `ControlWord::HexEscape`, not + // `ControlWord::Unicode` — see the variant's doc comment. + let mut ret = vec![Token::ControlSymbol((ControlWord::HexEscape, Property::Value(byte as i32)))]; + // LOCAL PATCH (QuickSearch): spaces after the escape are + // text, and have to be emitted before the remainder is + // re-tokenised. + // + // `\'hh` is a control *symbol*: unlike a control word it + // does not swallow a following space. But `tokenize` trims + // the slice it is given in order to classify it, so a + // remainder beginning with a space and then a backslash + // lost the space — while one beginning with a space and + // then a letter kept it, via the plain-text arm below. + // Two adjacent words made entirely of escapes therefore + // came back as one: `Καλημέρα κόσμε` as `Καλημέρακόσμε`, + // on files LibreOffice writes. + let rest = &tail[3..]; + let after_spaces = rest.trim_start_matches(' '); + if after_spaces.len() < rest.len() { + ret.push(Token::PlainText(&rest[..rest.len() - after_spaces.len()])); + } + recursive_tokenize!(after_spaces, ret); + return Ok(ret); + } + '\n' => { + // CRLF + let mut ret = vec![Token::CRLF]; + if let Some(tail) = slice.get(2..) { + recursive_tokenize!(tail, ret); + } + return Ok(ret); + } + 'a'..='z' => { + // Identify control word + // ex: parse "\b Words in bold" -> (Token::ControlWord(ControlWord::Bold), Token::ControlWordArgument("Words in bold") + // + // LOCAL PATCH (QuickSearch): `split_control_word`, not + // `split_first_whitespace`. A control word ends at the + // first character that is not a letter or part of its + // numeric parameter, which is very often not a space — + // see the doc comment on `StrUtils::split_control_word`. + let (mut ident, tail) = slice.split_control_word(); + // if ident end with semicolon, strip it for correct value parsing + ident = if ident.chars().last().unwrap_or(' ') == ';' { &ident[0..ident.len() - 1] } else { ident }; + let control_word = ControlWord::from(ident)?; + let mut ret = vec![Token::ControlSymbol(control_word)]; + recursive_tokenize!(tail, ret); + + // The first whitespace delimits the control word, the remaining ones are plain text + if tail.len() > 0 && tail.is_only_whitespace() { + ret.push(Token::PlainText(tail)); + } + return Ok(ret); + } + '*' => Ok(vec![Token::IgnorableDestination]), + _ => Ok(vec![]), + }, + (Some('\n'), Some(_)) => recursive_tokenize!(&slice[1..]), // Ignore the CRLF if it's not escaped + // Handle brackets + (Some('{'), None) => Ok(vec![Token::OpeningBracket]), + (Some('}'), None) => Ok(vec![Token::ClosingBracket]), + (Some('{'), Some(_)) => recursive_tokenize_with_init!(Token::OpeningBracket, &slice[1..]), + (Some('}'), Some(_)) => recursive_tokenize_with_init!(Token::ClosingBracket, &slice[1..]), + (None, None) => Err(LexerError::Error(format!("Empty token {}", &slice))), + // Else, it's plain text + _ => { + let text = slice.trim(); + if text == "" { + return Ok(vec![]); + } + return Ok(vec![Token::PlainText(slice)]); + } + }; + } +} + +#[cfg(test)] +pub(crate) mod tests { + use crate::lexer::Lexer; + use crate::tokens::ControlWord::{Ansi, Bold, ColorBlue, ColorNumber, ColorRed, FontNumber, FontSize, FontTable, Italic, Par, Pard, Rtf, Underline, Unicode, Unknown}; + use crate::tokens::Property::*; + use crate::tokens::Token::*; + use crate::tokens::{ControlWord, Property}; + + #[test] + fn simple_tokenize_test() { + let tokens = Lexer::tokenize(r"\b Words in bold").unwrap(); + assert_eq!(tokens, vec![ControlSymbol((Bold, None)), PlainText("Words in bold"),]); + } + + #[test] + fn scan_entire_file_test() { + let tokens = Lexer::scan(r#"{ \rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard Voici du texte en {\b gras}.\par }"#); + assert_eq!( + tokens.unwrap(), + vec![ + OpeningBracket, + ControlSymbol((Rtf, Value(1))), + ControlSymbol((Ansi, None)), + OpeningBracket, + ControlSymbol((FontTable, None)), + ControlSymbol((FontNumber, Value(0))), + ControlSymbol((Unknown("\\fswiss"), None)), + PlainText("Helvetica;"), + ClosingBracket, + ControlSymbol((FontNumber, Value(0))), + ControlSymbol((Pard, None)), + PlainText("Voici du texte en "), + OpeningBracket, + ControlSymbol((Bold, None)), + PlainText("gras"), + ClosingBracket, + PlainText("."), + ControlSymbol((Par, None)), + ClosingBracket, + ] + ); + } + + #[test] + fn scan_escaped_text() { + let tokens = Lexer::scan( + r#"\f0\fs24 \cf0 test de code \ +if (a == b) \{\ + test();\ +\} else \{\ + return;\ +\}}"#, + ); + assert_eq!( + tokens.unwrap(), + vec![ + ControlSymbol((FontNumber, Value(0))), + ControlSymbol((FontSize, Value(24))), + ControlSymbol((ColorNumber, Value(0))), + PlainText("test de code "), + CRLF, + PlainText("if (a == b) "), + PlainText("{"), + CRLF, + PlainText(" test();"), + CRLF, + PlainText("} else "), + PlainText("{"), + CRLF, + PlainText(" return;"), + CRLF, + PlainText("}"), + ClosingBracket + ], + ); + } + + #[test] + fn scan_ignorable_destination() { + let text = r"{\*\expandedcolortbl;;}"; + let tokens = Lexer::scan(text); + assert_eq!( + tokens.unwrap(), + vec![OpeningBracket, IgnorableDestination, ControlSymbol((Unknown(r"\expandedcolortbl;"), None)), ClosingBracket,] + ) + } + + #[test] + fn should_parse_control_symbol_ending_semicolon() { + let text = r"{\red255\blue255;}"; + let tokens = Lexer::scan(text); + assert_eq!( + tokens.unwrap(), + vec![OpeningBracket, ControlSymbol((ColorRed, Value(255))), ControlSymbol((ColorBlue, Value(255))), ClosingBracket] + ); + } + + #[test] + fn lex_with_leading_whitespaces() { + // Try to parse without error + let rtf_content = "\t {\\rtf1 }\n "; // Not raw str for the whitespace to be trimed + let tokens = Lexer::scan(rtf_content).unwrap(); + assert_eq!(tokens, vec![OpeningBracket, ControlSymbol((Rtf, Value(1))), ClosingBracket]); + } + + #[test] + fn should_parse_line_return() { + // From Microsoft's reference: "A carriage return (character value 13) or linefeed (character value 10) + // will be treated as a \par control if the character is preceded by a backslash. + // You must include the backslash; otherwise, RTF ignores the control word." + let text = r#"{\partightenfactor0 + +\fs24 \cf0 Font size 12, +\f0\b bold text. \ul Underline,bold text.\ + }"#; + let tokens = Lexer::scan(text).unwrap(); + assert_eq!( + tokens, + [ + OpeningBracket, + ControlSymbol((Unknown("\\partightenfactor"), Value(0))), + ControlSymbol((FontSize, Value(24))), + ControlSymbol((ColorNumber, Value(0))), + PlainText("Font size 12,"), + ControlSymbol((FontNumber, Value(0))), + ControlSymbol((Bold, None)), + PlainText("bold text. "), + ControlSymbol((Underline, None)), + PlainText("Underline,bold text."), + CRLF, + ClosingBracket + ] + ); + } + + #[test] + fn space_after_control_word() { + let text = r"{in{\i cred}ible}"; + let tokens = Lexer::scan(text).unwrap(); + assert_eq!( + tokens, + [OpeningBracket, PlainText("in"), OpeningBracket, ControlSymbol((Italic, None)), PlainText("cred"), ClosingBracket, PlainText("ible"), ClosingBracket,] + ) + } + + #[test] + fn should_handle_escaped_char() { + let rtf = r"{je suis une b\'eate}"; // ê = 0xea = 234 + let tokens = Lexer::scan(rtf).unwrap(); + assert_eq!( + tokens, + [OpeningBracket, PlainText("je suis une b"), ControlSymbol((Unicode, Value(234))), PlainText("te"), ClosingBracket,] + ); + } + + #[test] + fn should_handle_utf8_plain_text() { + let tokens = Lexer::scan(r"{Привет}").unwrap(); + assert_eq!(tokens, [OpeningBracket, PlainText("Привет"), ClosingBracket]); + } + + #[test] + fn should_not_panic_on_invalid_unicode() { + let rtf = String::from_utf8_lossy(&[92u8, 39, 0, 10, 0]); + assert!(Lexer::scan(&rtf).is_err()); + } + + #[test] + fn should_not_panic_on_utf8_control_word() { + let rtf = String::from_utf8_lossy(&[92u8, 97, 194, 160, 125]); + assert!(Lexer::scan(&rtf).is_ok()); + } + + #[test] + fn should_lex_unicode() { + let rtf = r#"{\u21834 \u21834 }"#; + let tokens = Lexer::scan(rtf).unwrap(); + assert_eq!( + tokens, + vec![OpeningBracket, ControlSymbol((Unicode, Value(21834))), PlainText(" "), ControlSymbol((Unicode, Value(21834))), ClosingBracket] + ); + } + + #[test] + fn should_handle_whitespace_group() { + let rtf = r"{\cf1 }"; // two whitespaces : one should be ignored, the other should be treated as plain text + let tokens = Lexer::scan(rtf).unwrap(); + assert_eq!(tokens, [OpeningBracket, ControlSymbol((ColorNumber, Value(1))), PlainText(" "), ClosingBracket]); + } + +} diff --git a/vendor/rtf-parser/src/lib.rs b/vendor/rtf-parser/src/lib.rs new file mode 100644 index 0000000..58065cb --- /dev/null +++ b/vendor/rtf-parser/src/lib.rs @@ -0,0 +1,23 @@ +// RTF parser for Text Editor +// This library supports RTF version 1.9.1 +// Specification is available here : https://dokumen.tips/documents/rtf-specification.html +// Explanations on specification here : https://www.oreilly.com/library/view/rtf-pocket-guide/9781449302047/ch01.html + +#![allow(irrefutable_let_patterns)] + +// Public API of the crate +pub mod document; +pub mod header; +pub mod lexer; +pub mod paragraph; +pub mod parser; +pub mod tokens; +mod utils; + +// Re-export all the symbols to the global rtf-parser namespace +pub use document::*; +pub use header::*; +pub use lexer::*; +pub use paragraph::*; +pub use parser::*; +pub use tokens::*; diff --git a/vendor/rtf-parser/src/paragraph.rs b/vendor/rtf-parser/src/paragraph.rs new file mode 100644 index 0000000..87d83a2 --- /dev/null +++ b/vendor/rtf-parser/src/paragraph.rs @@ -0,0 +1,74 @@ +/// Define the paragraph related structs and enums +use serde::{Deserialize, Serialize}; + + +use crate::tokens::ControlWord; + +#[derive(Debug, Default, Clone, Copy, PartialEq, Hash, Deserialize, Serialize)] +pub struct Paragraph { + pub alignment: Alignment, + pub spacing: Spacing, + pub indent: Indentation, + pub tab_width: i32, +} + +/// Alignement of a paragraph (left, right, center, justify) +#[derive(Debug, Default, Clone, Copy, PartialEq, Hash, Deserialize, Serialize)] +pub enum Alignment { + #[default] + LeftAligned, // \ql + RightAligned, // \qr + Center, // \qc + Justify, // \qj +} + +impl From<&ControlWord<'_>> for Alignment { + fn from(cw: &ControlWord) -> Self { + return match cw { + ControlWord::LeftAligned => Alignment::LeftAligned, + ControlWord::RightAligned => Alignment::RightAligned, + ControlWord::Center => Alignment::Center, + ControlWord::Justify => Alignment::Justify, + _ /* default */ => Alignment::LeftAligned, + }; + } +} + +/// The vertical margin before / after a block of text +#[derive(Debug, Default, Clone, Copy, PartialEq, Hash, Deserialize, Serialize)] +pub struct Spacing { + pub before: i32, + pub after: i32, + pub between_line: SpaceBetweenLine, + pub line_multiplier: i32, +} + +#[derive(Default, Debug, Clone, Copy, PartialEq, Hash, Deserialize, Serialize)] +pub enum SpaceBetweenLine { + Value(i32), + #[default] + Auto, + Invalid, +} + +/// Space between lines. +// If this control word is missing or if \sl1000 is used, the line spacing is automatically determined by the tallest character in the line; +// if N is a positive value, this size is used only if it is taller than the tallest character (otherwise, the tallest character is used); +// if N is a negative value, the absolute value of N is used, even if it is shorter than the tallest character. +impl From for SpaceBetweenLine { + fn from(value: i32) -> Self { + return match value { + 1000 => SpaceBetweenLine::Auto, + val if val < 0 => SpaceBetweenLine::Value(val.abs()), + val => SpaceBetweenLine::Value(val), + }; + } +} + +// This struct can not be an enum because left-indent and right-ident can both be defined at the same time +#[derive(Default, Debug, Clone, Copy, PartialEq, Hash, Deserialize, Serialize)] +pub struct Indentation { + pub left: i32, + pub right: i32, + pub first_line: i32, +} diff --git a/vendor/rtf-parser/src/parser.rs b/vendor/rtf-parser/src/parser.rs new file mode 100644 index 0000000..12e513b --- /dev/null +++ b/vendor/rtf-parser/src/parser.rs @@ -0,0 +1,957 @@ +use std::collections::HashMap; +use std::{fmt, mem}; + +use serde::{Deserialize, Serialize}; + +use crate::document::RtfDocument; +use crate::header::{CharacterSet, Color, ColorRef, ColorTable, Font, FontFamily, FontRef, FontTable, RtfHeader, StyleSheet}; +use crate::paragraph::{Alignment, Paragraph, SpaceBetweenLine}; +use crate::tokens::{ControlWord, Property, Token}; + +// Use to specify control word in parse_header +macro_rules! header_control_word { + ($cw:ident) => { + &Token::ControlSymbol((ControlWord::$cw, _)) + }; + ($cw:ident, $prop:ident) => { + &Token::ControlSymbol((ControlWord::$cw, Property::$prop)) + }; +} + +#[derive(Debug, Default, PartialEq, Clone, Deserialize, Serialize)] +pub struct StyleBlock { + pub painter: Painter, + pub paragraph: Paragraph, + pub text: String, +} + +#[derive(Debug, Clone, PartialEq, Hash, Deserialize, Serialize)] +pub struct Painter { + pub color_ref: ColorRef, + pub font_ref: FontRef, + pub font_size: u16, + pub bold: bool, + pub italic: bool, + pub underline: bool, + pub superscript: bool, + pub subscript: bool, + pub smallcaps: bool, + pub strike: bool, +} + +impl Default for Painter { + fn default() -> Self { + Self { + color_ref: Default::default(), + font_ref: Default::default(), + font_size: 12, + bold: Default::default(), + italic: Default::default(), + underline: Default::default(), + superscript: Default::default(), + subscript: Default::default(), + smallcaps: Default::default(), + strike: Default::default(), + } + } +} + +#[derive(Debug, Clone)] +pub enum ParserError { + InvalidToken(String), + IgnorableDestinationParsingError, + MalformedPainterStack, + InvalidFontIdentifier(Property), + InvalidColorIdentifier(Property), + NoMoreToken, + ValueCastError(String), + UnicodeParsingError(i32), + ParseEmptyToken, +} + +impl std::error::Error for ParserError {} + +impl fmt::Display for ParserError { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let _ = write!(f, "[RTF Parser] : "); + return match self { + ParserError::InvalidToken(msg) => write!(f, "{}", msg), + ParserError::IgnorableDestinationParsingError => write!(f, "No ignorable destination should be left"), + ParserError::MalformedPainterStack => write!(f, "Malformed painter stack : Unbalanced number of brackets"), + ParserError::InvalidFontIdentifier(property) => write!(f, "Invalid font identifier : {:?}", property), + ParserError::InvalidColorIdentifier(property) => write!(f, "Invalid color identifier : {:?}", property), + ParserError::NoMoreToken => write!(f, "No more token to parse"), + ParserError::ValueCastError(_type) => write!(f, "Unable to cast i32 to {_type}"), + ParserError::UnicodeParsingError(value) => write!(f, "Unable to parse {value} value to unicode"), + ParserError::ParseEmptyToken => write!(f, "Try to parse an empty token, this should never happen. If so, please open an issue in the github repository"), + }; + } +} + +// This state keeps track of each value that depends on the scope nesting +#[derive(Debug, Clone, PartialEq, Hash)] +struct ParserState { + pub painter: Painter, + pub paragraph: Paragraph, + pub unicode_ignore_count: i32, +} + +impl Default for ParserState { + fn default() -> Self { + Self { + painter: Default::default(), + paragraph: Default::default(), + unicode_ignore_count: 1, + } + } +} + +pub struct Parser<'a> { + tokens: Vec>, + parsed_item: Vec, + cursor: usize, +} + +impl<'a> Parser<'a> { + pub fn new(tokens: Vec>) -> Self { + return Self { + parsed_item: vec![false; tokens.len()], + tokens, + cursor: 0, + }; + } + + pub fn get_tokens(&self) -> Vec<&Token<'_>> { + // It ignores the empty tokens, that replaced already parsed tokens istead of deleting them for performance reasons + return self.tokens.iter().filter(|t| *t != &Token::Empty).collect(); + } + + fn check_document_validity(&self) -> Result<(), ParserError> { + // Check the document boundaries + if let Some(token) = self.tokens.first() { + if token != &Token::OpeningBracket { + return Err(ParserError::InvalidToken(format!("Invalid first token : {:?} not a '{{'", token))); + } + } else { + return Err(ParserError::NoMoreToken); + } + if let Some(token) = self.tokens.last() { + if token != &Token::ClosingBracket { + return Err(ParserError::InvalidToken(format!("Invalid last token : {:?} not a '}}'", token))); + } + } else { + return Err(ParserError::NoMoreToken); + } + return Ok(()); + } + + pub fn parse(&mut self) -> Result { + self.check_document_validity()?; + let mut document = RtfDocument::default(); // Init empty document + // Traverse the document and consume the header groups (FontTable, StyleSheet, etc ...) + document.header = self.parse_header()?; + // Init the state of the docuement. the stack is used to keep track of the different scope changes. + let mut state_stack: Vec = vec![ParserState::default()]; + // Parse the body + let len = self.tokens.len(); + let mut i = 0; + + // LOCAL PATCH (QuickSearch): `\uN` state, held across tokens. + // + // `pending_units` buffers UTF-16 code units so that a surrogate pair — + // two `\uN` escapes, one per half — becomes one character. It is + // flushed as soon as it does not end mid-pair, so in the ordinary case + // it holds nothing between tokens. + // + // `pending_skip` is how many fallback characters are still to be + // discarded. Every `\uN` is followed by `\ucN` of them (one, by + // default) for readers that predate Unicode, and they repeat the + // character in the document's codepage. They may be written as `\'hh` + // escapes or as literal text — `?` is the usual choice — and both have + // to be recognised or the fallback lands in the extracted text + // alongside the character it stands in for. + let mut pending_units: Vec = Vec::new(); + let mut pending_skip: i32 = 0; + + while i < len { + if self.parsed_item[i] { + // The item already has been parsed + i += 1; + continue; + } + let token = &self.tokens[i]; + + // LOCAL PATCH (QuickSearch): nothing may reach the document ahead + // of a half-finished surrogate pair, or the text would come out + // reordered. A token that is itself part of the `\uN` run — the + // next escape, or a fallback being discarded — is not "something + // else" and must not trigger the flush. + let continues_unicode = match token { + Token::ControlSymbol((ControlWord::Unicode, _)) => true, + Token::ControlSymbol((ControlWord::HexEscape, _)) => pending_skip > 0, + Token::PlainText(text) => pending_skip > 0 && text.chars().count() <= pending_skip as usize, + _ => false, + }; + if !continues_unicode { + Self::flush_unicode(&mut pending_units, &state_stack, &mut document)?; + } + // Each arm re-establishes this if the fallback run continues. + let skip_here = pending_skip; + pending_skip = 0; + + match token { + Token::OpeningBracket => { + if let Some(last_state) = state_stack.last() { + state_stack.push(last_state.clone()); // Inherit from the last state properties + } else { + state_stack.push(ParserState::default()); + } + } + Token::ClosingBracket => { + let state = state_stack.pop(); + if state.is_none() { + return Err(ParserError::MalformedPainterStack); + } + } + Token::ControlSymbol((control_word, property)) => { + let Some(current_state) = state_stack.last_mut() else { + return Err(ParserError::MalformedPainterStack); + }; + let current_painter = &mut current_state.painter; + let paragraph = &mut current_state.paragraph; + #[rustfmt::skip] // For now, rustfmt does not support this kind of alignement + match control_word { + ControlWord::ColorNumber => current_painter.color_ref = property.get_value_as::()?, + ControlWord::FontNumber => current_painter.font_ref = property.get_value_as::()?, + ControlWord::FontSize => current_painter.font_size = property.get_value_as::()?, + ControlWord::Bold => current_painter.bold = property.as_bool(), + ControlWord::Italic => current_painter.italic = property.as_bool(), + ControlWord::Underline => current_painter.underline = property.as_bool(), + ControlWord::UnderlineNone => current_painter.underline = false, + ControlWord::Superscript => current_painter.superscript = property.as_bool(), + ControlWord::Subscript => current_painter.subscript = property.as_bool(), + ControlWord::Smallcaps => current_painter.smallcaps = property.as_bool(), + ControlWord::Strikethrough => current_painter.strike = property.as_bool(), + // Paragraph + ControlWord::Pard => *paragraph = Paragraph::default(), // Reset the par + ControlWord::Plain => *current_painter = Painter::default(), // Reset the painter + ControlWord::ParDefTab => paragraph.tab_width = property.get_value(), + ControlWord::LeftAligned + | ControlWord::RightAligned + | ControlWord::Center + | ControlWord::Justify => paragraph.alignment = Alignment::from(control_word), + ControlWord::SpaceBefore => paragraph.spacing.before = property.get_value(), + ControlWord::SpaceAfter => paragraph.spacing.after = property.get_value(), + ControlWord::SpaceBetweenLine => paragraph.spacing.between_line = SpaceBetweenLine::from(property.get_value()), + ControlWord::SpaceLineMul => paragraph.spacing.line_multiplier = property.get_value(), + ControlWord::UnicodeIgnoreCount => current_state.unicode_ignore_count = property.get_value(), + // LOCAL PATCH (QuickSearch): rewritten. This used to + // gather every *adjacent* `\uN`/`\'hh` token into one + // run and then mask out the entries that looked like + // fallbacks — any value under 256 following the first. + // + // That only recognised a fallback written as `\'hh`, + // which is the form LibreOffice emits. A literal `?` + // is equally legal and just as common, and it arrives + // as plain text rather than as a token in the run, so + // it was indexed verbatim: a Greek word came out as + // `Κ?α?λ?`. The mask also could not tell a fallback + // from a genuine Latin-1 character that happened to + // follow one. + // + // Counting the fallbacks instead — which is what + // `\ucN` is for — handles both spellings and needs no + // guess about what a value under 256 means. + ControlWord::Unicode => { + pending_skip = current_state.unicode_ignore_count; + if let Ok(unit) = property.get_unicode_value() { + pending_units.push(unit); + } + // A high surrogate is half a character: its `\uN` + // partner is still to come, with the fallbacks for + // both of them in between. + if !Self::ends_mid_surrogate_pair(&pending_units) { + Self::flush_unicode(&mut pending_units, &state_stack, &mut document)?; + } + } + // LOCAL PATCH (QuickSearch): a `\'hh` standing on its + // own is text; one standing in for the `\uN` before it + // is a fallback, and is dropped. + ControlWord::HexEscape => { + if skip_here > 0 { + pending_skip = skip_here - 1; + } else { + // The byte becomes a code unit, so this decodes + // as Latin-1 rather than as the `\ansicpg` + // codepage the document declares. Unchanged + // from the original: the two agree everywhere + // except 0x80-0x9F, and correcting it needs the + // header's codepage plumbed down to here. + if let Ok(unit) = property.get_unicode_value() { + pending_units.push(unit); + } + Self::flush_unicode(&mut pending_units, &state_stack, &mut document)?; + } + } + // Special characters - output as text + ControlWord::Emdash => Self::add_text_to_document("\u{2014}", &state_stack, &mut document)?, + ControlWord::Endash => Self::add_text_to_document("\u{2013}", &state_stack, &mut document)?, + ControlWord::Bullet => Self::add_text_to_document("\u{2022}", &state_stack, &mut document)?, + ControlWord::LeftSingleQuote => Self::add_text_to_document("\u{2018}", &state_stack, &mut document)?, + ControlWord::RightSingleQuote => Self::add_text_to_document("\u{2019}", &state_stack, &mut document)?, + ControlWord::LeftDoubleQuote => Self::add_text_to_document("\u{201C}", &state_stack, &mut document)?, + ControlWord::RightDoubleQuote => Self::add_text_to_document("\u{201D}", &state_stack, &mut document)?, + ControlWord::Tab => Self::add_text_to_document("\t", &state_stack, &mut document)?, + ControlWord::Line => Self::add_text_to_document("\n", &state_stack, &mut document)?, + // LOCAL PATCH (QuickSearch): `\par` ends a paragraph + // and so is a line break, exactly as `\line` above is. + // It used to fall through to `_ => {}` and emit + // nothing at all, so every paragraph boundary in + // `get_text` closed up: a LibreOffice document came + // back as `...do eiusmod.The needle...`. No text was + // lost, but the join invents word and sentence + // boundaries that are not in the document — which a + // snippet shows to the user and a phrase query can + // match across. + ControlWord::Par => Self::add_text_to_document("\n", &state_stack, &mut document)?, + // Others tokens + _ => {} + }; + } + // LOCAL PATCH (QuickSearch): the leading characters may be the + // ANSI fallback for a `\uN` that came just before, in which + // case they repeat a character already emitted and must be + // dropped. `\u233?after` is `é` followed by `after`, not by + // `?after`. + Token::PlainText(text) => { + let mut rest = *text; + if skip_here > 0 { + let mut chars = rest.chars(); + let dropped = chars.by_ref().take(skip_here as usize).count(); + rest = chars.as_str(); + // A fallback run can span tokens when `\ucN` is more + // than one, so what is left over stays owed. + pending_skip = skip_here - dropped as i32; + } + if !rest.is_empty() { + Self::flush_unicode(&mut pending_units, &state_stack, &mut document)?; + Self::add_text_to_document(rest, &state_stack, &mut document)?; + } + } + Token::CRLF => Self::add_text_to_document("\n", &state_stack, &mut document)?, + Token::IgnorableDestination => { + return Err(ParserError::IgnorableDestinationParsingError); + } + Token::Empty => return Err(ParserError::ParseEmptyToken), + }; + i += 1; + } + // LOCAL PATCH (QuickSearch): a document that ends mid-surrogate-pair + // still owes its last character. + Self::flush_unicode(&mut pending_units, &state_stack, &mut document)?; + return Ok(document); + } + + /// LOCAL PATCH (QuickSearch): whether `units` ends on an unpaired high + /// surrogate, i.e. whether the next `\uN` completes a character rather + /// than starting one. + fn ends_mid_surrogate_pair(units: &[u16]) -> bool { + return matches!(units.last(), Some(0xD800..=0xDBFF)); + } + + /// LOCAL PATCH (QuickSearch): emit the buffered UTF-16 units as text. + /// + /// `from_utf16_lossy`, where this used to be `from_utf16(..).unwrap()`. + /// `\uN` carries whatever number the document put there, and a lone + /// surrogate, which the escape `\u55296` names, is a perfectly valid + /// byte sequence that nothing upstream can rule out. That + /// `unwrap` panicked on it. RTF is one of the two formats QuickSearch also + /// extracts at *walk* time, where a panicking worker costs the root its + /// whole content pass, so the panic was contained there with + /// `catch_unwind` and the file recorded as failed. Decoding lossily is + /// better than either: one `U+FFFD` where the bad escape was, and the rest + /// of the document is indexed. + fn flush_unicode(units: &mut Vec, state_stack: &Vec, document: &mut RtfDocument) -> Result<(), ParserError> { + if units.is_empty() { + return Ok(()); + } + let text = String::from_utf16_lossy(units); + units.clear(); + return Self::add_text_to_document(&text, state_stack, document); + } + + fn add_text_to_document(text: &str, state_stack: &Vec, document: &mut RtfDocument) -> Result<(), ParserError> { + let Some(current_state) = state_stack.last() else { + return Err(ParserError::MalformedPainterStack); + }; + let current_painter = ¤t_state.painter; + let paragraph = ¤t_state.paragraph; + let last_style_group = document.body.last_mut(); + // If the painter is the same as the previous one, merge the two block. + if let Some(group) = last_style_group { + if group.painter.eq(current_painter) && group.paragraph.eq(¶graph) { + group.text.push_str(text); + return Ok(()); + } + } + // Else, push another StyleBlock on the stack with its own painter + document.body.push(StyleBlock { + painter: current_painter.clone(), + paragraph: paragraph.clone(), + text: String::from(text), + }); + return Ok(()); + } + + fn get_token_at(&'a self, index: usize) -> Option<&'a Token<'a>> { + return self.tokens.get(index); + } + + // LOCAL PATCH (QuickSearch): `get_next_token` deleted. It was already + // dead upstream — defined, never called — which only became a warning here + // because a path dependency is compiled with the workspace's lints where a + // registry one is not. + + #[inline] + fn consume_token_at(&mut self, index: usize) -> Option> { + if self.tokens.is_empty() || index >= self.tokens.len() { + return None; + } + // PERF : vec.remove can require reallocation unlike this method + self.cursor += 1; + self.parsed_item[index] = true; + return Some(mem::replace(&mut self.tokens[index], Token::Empty)); + } + + fn consume_next_token(&mut self) -> Option> { + return self.consume_token_at(self.cursor); + } + + // Consume token from cursor to + fn _consume_tokens_until(&mut self, reference_token: &Token<'a>) -> Vec> { + let mut ret = vec![]; + let token_type_id = mem::discriminant(reference_token); + while let Some(token) = self.consume_next_token() { + let type_id = mem::discriminant(&token); + ret.push(token); + if type_id == token_type_id { + break; + } + } + return ret; + } + + // The opening bracket should already be consumed + fn consume_tokens_until_matching_bracket(&mut self) -> Vec> { + let mut ret = vec![]; + let mut count = 0; + while let Some(token) = self.consume_next_token() { + match token { + Token::OpeningBracket => count += 1, + Token::ClosingBracket => count -= 1, + _ => {} + } + ret.push(token); + if count < 0 { + break; + } + } + return ret; + } + + // Consume all the tokens inside a group ({ ... }) and returns the includes ones + fn consume_group(&mut self) -> Vec> { + // TODO: check the the token at cursor is indeed an OpeningBracket + self.consume_token_at(self.cursor); // Consume the opening bracket + return self.consume_tokens_until_matching_bracket(); + } + + // Consume all tokens until the header is read + fn parse_header(&mut self) -> Result { + self.cursor = 0; // Reset the cursor + let mut header = RtfHeader::default(); + while let (Some(token), Some(mut next_token)) = (self.get_token_at(self.cursor), self.get_token_at(self.cursor + 1)) { + // Manage the case where there is CRLF between { and control_word + // {\n /*/ignoregroup } + let mut i = 0; + while *next_token == Token::CRLF { + if let Some(next_token_not_crlf) = self.get_token_at(self.cursor + 1 + i) { + next_token = next_token_not_crlf; + i += 1; + } else { + break; + } + } + match (token, next_token) { + (Token::OpeningBracket, Token::IgnorableDestination) => { + let ignore_group_tokens = self.consume_group(); + Self::parse_ignore_groups(&ignore_group_tokens); + } + (Token::OpeningBracket, header_control_word!(FontTable, None)) => { + let font_table_tokens = self.consume_group(); + header.font_table = Self::parse_font_table(&font_table_tokens)?; + } + (Token::OpeningBracket, header_control_word!(ColorTable, None)) => { + let color_table_tokens = self.consume_group(); + header.color_table = Self::parse_color_table(&color_table_tokens)?; + } + (Token::OpeningBracket, header_control_word!(StyleSheet, None)) => { + let stylesheet_tokens = self.consume_group(); + header.stylesheet = Self::parse_stylesheet(&stylesheet_tokens)?; + } + // Check and consume token + (token, _) => { + if let Some(charset) = CharacterSet::from(token) { + header.character_set = charset; + } + self.cursor += 1; + } + } + } + return Ok(header); + } + + fn parse_font_table(font_tables_tokens: &Vec>) -> Result { + let Some(font_table_first_token) = font_tables_tokens.get(0) else { + return Err(ParserError::NoMoreToken); + }; + if font_table_first_token != header_control_word!(FontTable, None) { + return Err(ParserError::InvalidToken(format!("{:?} is not a FontTable token", font_table_first_token))); + } + let mut table = HashMap::new(); + let mut current_key = 0; + let mut current_font = Font::default(); + for token in font_tables_tokens.iter() { + match token { + Token::ControlSymbol((control_word, property)) => match control_word { + ControlWord::FontNumber => { + // Insert previous font + table.insert(current_key, current_font.clone()); + if let Property::Value(key) = property { + current_key = *key as FontRef; + } else { + return Err(ParserError::InvalidFontIdentifier(*property)); + } + } + ControlWord::Unknown(name) => { + if let Some(font_family) = FontFamily::from(name) { + current_font.font_family = font_family; + } + } + _ => {} + }, + Token::PlainText(name) => { + current_font.name = name.trim_end_matches(';').to_string(); + } + Token::ClosingBracket => { + table.insert(current_key, current_font.clone()); + } // Insert previous font + _ => {} + } + } + return Ok(table); + } + + fn parse_color_table(color_table_tokens: &Vec>) -> Result { + let Some(color_table_first_token) = color_table_tokens.get(0) else { + return Err(ParserError::NoMoreToken); + }; + if color_table_first_token != header_control_word!(ColorTable, None) { + return Err(ParserError::InvalidToken(format!("ParserError: {:?} is not a ColorTable token", color_table_first_token))); + } + let mut table = HashMap::new(); + let mut current_key = 1; + let mut current_color = Color::default(); + for token in color_table_tokens.iter() { + match token { + Token::ControlSymbol((control_word, property)) => match control_word { + ControlWord::ColorRed => current_color.red = property.get_value_as::()?, + ControlWord::ColorGreen => current_color.green = property.get_value_as::()?, + ControlWord::ColorBlue => { + current_color.blue = property.get_value_as::()?; + table.insert(current_key, current_color.clone()); + current_key += 1; + } + _ => {} + }, + _ => {} + } + } + return Ok(table); + } + + fn parse_stylesheet(_stylesheet_tokens: &Vec>) -> Result { + // TODO : parse the stylesheet + return Ok(StyleSheet::from([])); + } + + fn parse_ignore_groups(_tokens: &Vec>) { + // Do nothing for now + } +} + +#[cfg(test)] +pub mod tests { + use super::*; + use crate::header::CharacterSet::*; + use crate::header::FontFamily::*; + use crate::header::RtfHeader; + use crate::include_test_file; + use crate::lexer::Lexer; + + #[test] + fn parser_header() { + let tokens = Lexer::scan(r#"{ \rtf1\ansi{\fonttbl\f0\fswiss Helvetica;}\f0\pard Voici du texte en {\b gras}.\par }"#).unwrap(); + let doc = Parser::new(tokens).parse().unwrap(); + assert_eq!( + doc.header, + RtfHeader { + character_set: Ansi, + font_table: FontTable::from([( + 0, + Font { + name: "Helvetica".into(), + character_set: 0, + font_family: Swiss + } + )]), + ..RtfHeader::default() + } + ); + assert_eq!( + doc.body, + [ + StyleBlock { + painter: Painter::default(), + paragraph: Default::default(), + text: "Voici du texte en ".into(), + }, + StyleBlock { + painter: Painter { bold: true, ..Painter::default() }, + paragraph: Default::default(), + text: "gras".into(), + }, + StyleBlock { + painter: Painter::default(), + paragraph: Default::default(), + text: ".".into(), + }, + ] + ); + } + + #[test] + fn parse_multiline_document() { + let document = r"{\rtf1\ansi\deff0 {\fonttbl {\f0 Courier;}{\f1 ProFontWindows;}} + {\colortbl;\red0\green0\blue0;\red255\green0\blue0;\red255\green255\blue0;} + This line is font 0 which is courier\line + \f1 + This line is font 1\line + \f0 + This line is font 0 again\line + This line has a \cf2 red \cf1 word\line + \highlight3 while this line has a \cf2 red \cf1 word and is highlighted in yellow\highlight0\line + Finally, back to the default color.\line + }"; + let tokens = Lexer::scan(document).unwrap(); + let _doc = Parser::new(tokens).parse().unwrap(); + } + + #[test] + fn parse_entire_file_header() { + let file_content = include_test_file!("test-file.rtf"); + let tokens = Lexer::scan(file_content).unwrap(); + let doc = Parser::new(tokens).parse().unwrap(); + assert_eq!( + doc.header, + RtfHeader { + character_set: Ansi, + font_table: FontTable::from([ + ( + 0, + Font { + name: "Helvetica".into(), + character_set: 0, + font_family: Swiss, + } + ), + ( + 1, + Font { + name: "Helvetica-Bold".into(), + character_set: 0, + font_family: Swiss, + } + ) + ]), + color_table: ColorTable::from([(1, Color { red: 255, green: 255, blue: 255 }),]), + ..RtfHeader::default() + } + ); + } + + #[test] + fn parse_ignore_group() { + let rtf = r"{\*\expandedcolortbl;;}"; + let tokens = Lexer::scan(rtf).unwrap(); + let mut parser = Parser::new(tokens); + let document = parser.parse().unwrap(); + assert_eq!(parser.get_tokens(), Vec::<&Token>::new()); // Should have consumed all the tokens + assert_eq!(document.header, RtfHeader::default()); + } + + #[test] + fn parse_ignore_group_with_crlf() { + let rtf = r"{\ + \ + \*\expandedcolortbl;;}"; + let tokens = Lexer::scan(rtf).unwrap(); + let mut parser = Parser::new(tokens); + let document = parser.parse().unwrap(); + assert_eq!(parser.get_tokens(), Vec::<&Token>::new()); // Should have consumed all the tokens + assert_eq!(document.header, RtfHeader::default()); + } + + #[test] + #[ignore] // Pre-existing test failure from upstream - backslash line breaks not handled correctly + fn parse_whitespaces() { + let file_content = include_test_file!("list-item.rtf"); + let tokens = Lexer::scan(file_content).unwrap(); + let mut parser = Parser::new(tokens); + let document = parser.parse().unwrap(); + assert_eq!( + document.body, + vec![StyleBlock { + painter: Painter { font_size: 24, ..Painter::default() }, + paragraph: Default::default(), + text: "\nEmpty start\n\nList test : \n - item 1\n - item 2\n - item 3\n - item 4".into(), + },] + ); + } + + #[test] + fn parse_google_docs_whitespaces() { + let rtf_content = include_test_file!("google-docs.rtf"); + let tokens = Lexer::scan(rtf_content).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.get_text(), "Lorem ipsum odor amet"); + } + + #[test] + fn parse_image_data() { + // Try to parse without error + let rtf_content = include_test_file!("file-with-image.rtf"); + let tokens = Lexer::scan(rtf_content).unwrap(); + let _document = Parser::new(tokens).parse(); + } + + #[test] + fn parse_header_and_body() { + let rtf = r#"{\rtf1\ansi\ansicpg1252\cocoartf2639 +\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\froman\fcharset0 Times-Bold;\f1\froman\fcharset0 Times-Roman;\f2\froman\fcharset0 Times-Italic; +\f3\fswiss\fcharset0 Helvetica;} +{\colortbl;\red255\green255\blue255;\red0\green0\blue10;\red0\green0\blue1;\red191\green191\blue191; +} +\f0\b\fs21 \cf2 Lorem ipsum +\fs56 \ +\pard\pardeftab709\sl288\slmult1\sa225\qj\partightenfactor0 + +\f1\b0\fs21 \cf0 \ +\pard\pardeftab709\fi-432\ri-1\sb240\sa120\partightenfactor0 +\ls1\ilvl0 +\f0\b\fs36\cf2\plain Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ac faucibus odio. \ +\pard\pardeftab709\sl288\slmult1\sa225\qj\partightenfactor0 +}"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.body[0].text, "Lorem ipsum"); + assert_eq!(document.body[1].text, "\n"); + assert_eq!(document.body[2].text, "\n"); + assert_eq!(document.body[3].text, "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ac faucibus odio. \n"); + } + + #[test] + fn parse_paragraph_aligment() { + let rtf = r#"{\rtf1\ansi\deff0 {\fonttbl {\f0 Times;}} + \fs34 + {\pard \qc \fs60 Annalium Romae\par} + {\pard \qj + Urbem Romam a principio reges habuere; libertatem et + \par} + {\pard \ql + Non Cinnae, non Sullae longa dominatio; et Pompei Crassique potentia + \par}"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.body[0].paragraph.alignment, Alignment::Center); + assert_eq!(document.body[1].paragraph.alignment, Alignment::Justify); + assert_eq!(document.body[2].paragraph.alignment, Alignment::LeftAligned); + } + + #[test] + fn should_parse_escaped_char() { + let rtf = r"{\rtf1\ansi\deff0 {\fonttbl {\f0 Times;}}je suis une b\'eate}"; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.body[0].text, "je suis une bête"); + } + + #[test] + fn parse_plain_directive() { + let rtf = r"{\rtf1{\fonttbl {\f0 Times;}}\f0\b\fs36\u\cf2\plain Plain text}"; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.body[0].painter, Painter::default()); + } + + #[test] + fn parse_color_table() { + // cf0 is unset color, cf1 is first color, cf2 is second color, etc ... + let rtf = r#"{\rtf1\ansi\ansicpg936\cocoartf2761 + \cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fnil\fcharset134 PingFangSC-Regular;} + {\colortbl;\red255\green255\blue255;\red251\green2\blue7;\red114\green44\blue253;} + {\*\expandedcolortbl;;\cssrgb\c100000\c14913\c0;\cssrgb\c52799\c30710\c99498;} + \f0\fs24 \cf2 A + \f1 \cf3 B}"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(document.header.color_table.get(&document.body[0].painter.color_ref).unwrap(), &Color { red: 251, green: 2, blue: 7 }); + } + + #[test] + fn parse_underline() { + // \\ul underline true + // \\ulnone underline false + let rtf = r#"{\rtf1\ansi\ansicpg936\cocoartf2761 + \cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;} + {\colortbl;\red255\green255\blue255;} + {\*\expandedcolortbl;;} + \paperw11900\paperh16840\margl1440\margr1440\vieww11520\viewh8400\viewkind0 + \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0 + + \f0\fs24 \cf0 \ul \ulc0 a\ulnone A}"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(&document.body[0].painter.underline, &true); + assert_eq!(&document.body[1].painter.underline, &false); + } + + #[test] + fn parse_unicode() { + // start with \\uc0 + // \u21834 => 啊 + let rtf = r#"{\rtf1\ansi\ansicpg936\cocoartf2761 + \cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;} + \f0\fs24 \cf0 \uc0\u21834 \u21834 }"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(&document.body[0].text, "啊 啊"); + } + + #[test] + fn parse_two_characters_compound_unicode() { + let rtf = r#"{\rtf1\ansi + \f0 a\u55357 \u56447 1 \u21834}"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(&document.body[0].text, "a👿1 啊"); + } + + #[test] + fn parse_unicode_with_fallback() { + // Should only consider the first unicode, not the two fallback chars + let rtf = r#"{\rtf1\ansi + {\f0 \u-10179\'5f\u-9089\'5f} + {\f1 \uc2\u32767\'c2\'52} + {\f2 \uc2\u26789\'97\'73} + {\f3 b\'eate} + {\f4 \uc0 b\'ea\'eate} + }"#; + let tokens = Lexer::scan(rtf).unwrap(); + let document = Parser::new(tokens).parse().unwrap(); + assert_eq!(&document.body[0].text, "👿"); + assert_eq!(&document.body[1].text, "翿"); + assert_eq!(&document.body[2].text, "梥"); + assert_eq!(&document.body[3].text, "bête"); + assert_eq!(&document.body[4].text, "bêête"); + } + + #[test] + fn body_starts_with_a_group() { + let rtf = r"{\rtf1\ansi\deff0{\fonttbl {\f0\fnil\fcharset0 Calibri;}{\f1\fnil\fcharset2 Symbol;}}{\colortbl ;}{\pard \u21435 \sb70\par}}"; + let tokens = Lexer::scan(rtf).unwrap(); + let _document = Parser::new(tokens).parse().unwrap(); + } + + #[test] + fn rtf_different_semantic() { + let rtf1 = r"{\rtf1 \b bold \i Bold Italic \i0 Bold again}"; + let rtf2 = r"{\rtf1 \b bold {\i Bold Italic }Bold again}"; + let rtf3 = r"{\rtf1 \b bold \i Bold Italic \plain\b Bold again}"; + let doc1 = RtfDocument::try_from(rtf1).unwrap(); + let doc2 = RtfDocument::try_from(rtf2).unwrap(); + let doc3 = RtfDocument::try_from(rtf3).unwrap(); + assert_eq!(doc1.body, doc2.body); + assert_eq!(doc3.body, doc2.body); + } + + #[test] + fn parse_emdash() { + let rtf = r"{\rtf1\ansi hello\emdash world}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("\u{2014}"), "Em-dash not found in: {}", text); + assert!(text.contains("hello\u{2014}world"), "Expected 'hello—world', got: {}", text); + } + + #[test] + fn parse_endash() { + let rtf = r"{\rtf1\ansi 2020\endash 2025}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("\u{2013}"), "En-dash not found in: {}", text); + } + + #[test] + fn parse_smart_quotes() { + let rtf = r"{\rtf1\ansi \ldblquote Hello\rdblquote and \lquote hi\rquote}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("\u{201C}"), "Left double quote not found"); + assert!(text.contains("\u{201D}"), "Right double quote not found"); + assert!(text.contains("\u{2018}"), "Left single quote not found"); + assert!(text.contains("\u{2019}"), "Right single quote not found"); + } + + #[test] + fn parse_bullet() { + let rtf = r"{\rtf1\ansi \bullet Item one}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("\u{2022}"), "Bullet not found in: {}", text); + } + + #[test] + fn parse_tab_and_line() { + let rtf = r"{\rtf1\ansi col1\tab col2\line next}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("\t"), "Tab not found in: {}", text); + assert!(text.contains("\n"), "Line break not found in: {}", text); + } + + #[test] + fn parse_special_chars_in_scrivener_style() { + // Simulates Scrivener RTF output + let rtf = r"{\rtf1\ansi\ansicpg1252\deff0 +{\fonttbl{\f0\fnil\fcharset0 TimesNewRomanPSMT;}} +\f0\fs24 The transformation in reverse\emdash confident expert to tired father.\par +He said, \ldblquote Hello.\rdblquote\par}"; + let doc = RtfDocument::try_from(rtf).unwrap(); + let text: String = doc.body.iter().map(|b| b.text.as_str()).collect(); + assert!(text.contains("reverse\u{2014}confident"), + "Em-dash not properly placed in: {}", text); + assert!(text.contains("\u{201C}Hello.\u{201D}"), + "Smart quotes not properly placed in: {}", text); + } +} diff --git a/vendor/rtf-parser/src/tokens.rs b/vendor/rtf-parser/src/tokens.rs new file mode 100644 index 0000000..f542a31 --- /dev/null +++ b/vendor/rtf-parser/src/tokens.rs @@ -0,0 +1,280 @@ +use std::any::type_name; +use std::convert::TryFrom; +use std::fmt; + +use crate::lexer::LexerError; +use crate::parser::ParserError; + +/// Parser representation of an RTF token +#[allow(dead_code)] +#[derive(PartialEq, Eq, Clone)] +pub enum Token<'a> { + PlainText(&'a str), + OpeningBracket, + ClosingBracket, + CRLF, // Line-return \n + IgnorableDestination, // \*\ + ControlSymbol(ControlSymbol<'a>), + Empty, // Used by the parser for optimization +} + +#[allow(dead_code)] +impl<'a> fmt::Debug for Token<'a> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + #[rustfmt::skip] + return match self { + Token::PlainText(text) => write!(f, r"PlainText : {:?}", *text), + Token::OpeningBracket => write!(f, "OpeningBracket"), + Token::ClosingBracket => write!(f, "ClosingBracket"), + Token::CRLF => write!(f, "CRLF"), + Token::IgnorableDestination => write!(f, "IgnorableDestination"), + Token::ControlSymbol(symbol) => write!(f, "ControlSymbol : {:?}", symbol), + Token::Empty => write!(f, "Empty"), + }; + } +} + +/// A control symbol is a pair (control_word, property) +/// In the RTF specification, it refers to 'control word entity' +pub type ControlSymbol<'a> = (ControlWord<'a>, Property); + +/// Parameters for a control word +#[allow(dead_code)] +#[derive(Copy, Clone, Debug, PartialEq, Eq)] +pub enum Property { + On, // 1 + Off, // 0 + Value(i32), // Specified as i16 in the spec 1.5 but some softwre use i32 (ex: TextEdit for unicode) + None, // No parameter +} + +impl Property { + pub fn as_bool(&self) -> bool { + match self { + Property::On => true, + Property::Off => false, + Property::None => true, + Property::Value(val) => *val == 1, + } + } + + // Retrieve and cast the i32 value to a specific numeric type + pub fn get_value_as>(&self) -> Result { + let error: Result = Err(ParserError::ValueCastError(type_name::().to_string())); + if let Property::Value(value) = &self { + return T::try_from(*value).or(error); + } + // If no value, returns 0 + return T::try_from(0).or(error); + } + + // Default variant + pub fn get_value(&self) -> i32 { + return self.get_value_as::().expect("i32 to i32 conversion should never fail"); + } + + /// Return the u16 corresponding value of the unicode + pub fn get_unicode_value(&self) -> Result { + // RTF control words generally accept signed 16-bit numbers as arguments. + // For this reason, Unicode values greater than 32767 must be expressed as negative numbers. + let mut offset = 0; + if let Property::Value(value) = &self { + if *value < 0 { + offset = 65_536; + } + return u16::try_from(value + offset).or(Err(ParserError::UnicodeParsingError(*value))); + } + return Err(ParserError::UnicodeParsingError(0)); + } +} + +#[derive(Copy, Clone, Debug, PartialEq, Eq)] +pub enum ControlWord<'a> { + Rtf, + Ansi, + + Unicode, + UnicodeIgnoreCount, + /// LOCAL PATCH (QuickSearch): `\'hh`, a raw codepage byte, as distinct + /// from `\uN`. + /// + /// Both used to lex to [`ControlWord::Unicode`], which made them + /// indistinguishable to the parser — and they do not behave alike. `\uN` + /// is followed by `\ucN` fallback characters that a Unicode-aware reader + /// must *discard*; `\'hh` standing on its own is text. Telling them apart + /// is what lets the parser skip a fallback written as a literal `?` + /// instead of as `\'3f`, which is the shape that used to swallow the + /// escape and the rest of the word. + HexEscape, + + FontTable, + FontCharset, + FontNumber, + FontSize, // Expressed in half point + ColorNumber, + + ColorTable, + FileTable, + StyleSheet, + + Italic, + Bold, + Underline, + UnderlineNone, + Superscript, // 5th + Subscript, // H20 + Smallcaps, + Strikethrough, + + Par, // New paragraph + Pard, // Resets to default paragraph properties + Sectd, + Plain, + ParStyle, // Designates paragraph style. If a paragraph style is specified, style properties must be specified with the paragraph. N references an entry in the stylesheet. + ParDefTab, // Tab width + // Paragraph indent + FirstLineIdent, + LeftIndent, + RightIndent, + // Paragraph alignment + LeftAligned, + RightAligned, + Center, + Justify, + // Paragraph spacing + SpaceBefore, + SpaceAfter, + SpaceBetweenLine, + SpaceLineMul, // Line spacing multiple. Indicates that the current line spacing is a multiple of "Single" line spacing. This control word can follow only the \sl control word and works in conjunction with it. + + ColorRed, + ColorGreen, + ColorBlue, + + // Special characters + Emdash, + Endash, + Bullet, + LeftSingleQuote, + RightSingleQuote, + LeftDoubleQuote, + RightDoubleQuote, + Tab, + Line, + + Unknown(&'a str), +} + +impl<'a> ControlWord<'a> { + // https://www.biblioscape.com/rtf15_spec.htm + // version 1.5 should be compatible with 1.9 + pub fn from(input: &str) -> Result, LexerError> { + // Loop backward the string to get the number + let mut it = input.chars().rev(); + let mut suffix_index = 0; + while let Some(c) = it.next() { + match c { + '0'..='9' | '-' => { + suffix_index += 1; + } + _ => break, + } + } + + // f0 -> prefix: f, suffix: 0 + let index = input.len() - suffix_index; + let prefix = &input[..index]; + let suffix = &input[index..]; + + let property = if suffix == "" { + Property::None + } else { + let Ok(value) = suffix.parse::() else { + return Err(LexerError::Error(format!("[Lexer] Unable to parse {} as integer", &suffix))); + }; + Property::Value(value) + }; + + #[rustfmt::skip] + let control_word = match prefix { + r"\rtf" => ControlWord::Rtf, + r"\ansi" => ControlWord::Ansi, + // Unicode + r"\u" => ControlWord::Unicode, + r"\uc" => ControlWord::UnicodeIgnoreCount, + // Header + r"\fonttbl" => ControlWord::FontTable, + r"\colortbl" => ControlWord::ColorTable, + r"\filetbl" => ControlWord::FileTable, + r"\stylesheet" => ControlWord::StyleSheet, + // Font + r"\fcharset" => ControlWord::FontCharset, + r"\f" => ControlWord::FontNumber, + r"\fs" => ControlWord::FontSize, + r"\cf" => ControlWord::ColorNumber, + // Format + r"\i" => ControlWord::Italic, + r"\b" => ControlWord::Bold, + r"\ul" => ControlWord::Underline, + r"\ulnone" => ControlWord::UnderlineNone, + r"\super" => ControlWord::Superscript, + r"\sub" => ControlWord::Subscript, + r"\scaps" => ControlWord::Smallcaps, + r"\strike" => ControlWord::Strikethrough, + // Paragraph + r"\par" => ControlWord::Par, + r"\pard" => ControlWord::Pard, + r"\sectd" => ControlWord::Sectd, + r"\plain" => ControlWord::Plain, + r"\s" => ControlWord::ParStyle, + r"\pardeftab" => ControlWord::ParDefTab, + // Paragraph alignment + r"\ql" => ControlWord::LeftAligned, + r"\qr" => ControlWord::RightAligned, + r"\qj" => ControlWord::Justify, + r"\qc" => ControlWord::Center, + // Paragraph indent + r"\fi" => ControlWord::FirstLineIdent, + r"\ri" => ControlWord::RightIndent, + r"\li" => ControlWord::LeftIndent, + // Paragraph Spacing + r"\sb" => ControlWord::SpaceBefore, + r"\sa" => ControlWord::SpaceAfter, + r"\sl" => ControlWord::SpaceBetweenLine, + r"\slmul" => ControlWord::SpaceLineMul, + r"\red" => ControlWord::ColorRed, + r"\green" => ControlWord::ColorGreen, + r"\blue" => ControlWord::ColorBlue, + // Special characters + r"\emdash" => ControlWord::Emdash, + r"\endash" => ControlWord::Endash, + r"\bullet" => ControlWord::Bullet, + r"\lquote" => ControlWord::LeftSingleQuote, + r"\rquote" => ControlWord::RightSingleQuote, + r"\ldblquote" => ControlWord::LeftDoubleQuote, + r"\rdblquote" => ControlWord::RightDoubleQuote, + r"\tab" => ControlWord::Tab, + r"\line" => ControlWord::Line, + // Unknown + _ => ControlWord::Unknown(prefix), + }; + return Ok((control_word, property)); + } +} + +#[cfg(test)] +mod tests { + use crate::tokens::{ControlWord, Property}; + + #[test] + fn control_word_from_input_test() { + let input = r"\rtf1"; + assert_eq!(ControlWord::from(input).unwrap(), (ControlWord::Rtf, Property::Value(1))) + } + + #[test] + fn control_word_with_negative_parameter() { + let input = r"\rtf-1"; + assert_eq!(ControlWord::from(input).unwrap(), (ControlWord::Rtf, Property::Value(-1))) + } +} diff --git a/vendor/rtf-parser/src/utils.rs b/vendor/rtf-parser/src/utils.rs new file mode 100644 index 0000000..041cbff --- /dev/null +++ b/vendor/rtf-parser/src/utils.rs @@ -0,0 +1,115 @@ +pub trait StrUtils { + fn split_control_word(&self) -> (&str, &str); + + fn is_only_whitespace(&self) -> bool; +} + +impl StrUtils for str { + /// LOCAL PATCH (QuickSearch): split a control word from what follows it, + /// by the rule the RTF specification actually gives. + /// + /// A control word is `\`, then ASCII letters, then an optional numeric + /// parameter (an optional `-` and digits). It ends at the first character + /// that is not part of that. If that character is a space, the space is the + /// delimiter and is consumed; if it is anything else, it is *not* consumed + /// and begins the next token. + /// + /// This replaces `split_first_whitespace`, which ended the word at + /// whitespace and nowhere else, so `\u233?after` came back as the single + /// ident `\u233?after` — an unrecognised control word, taking the escaped + /// character and the rest of the word with it. A `\uN` escape is followed + /// by an ANSI fallback character that the spec lets be anything, and a + /// literal `?` is the common choice. + /// + /// The function it replaces is deleted rather than kept: this was its only + /// caller, and a vendored copy has no other consumer to keep it for. + fn split_control_word(&self) -> (&str, &str) { + // Byte indices are safe here without a char boundary check: every + // character this scans past is ASCII, and it stops at the first that + // is not. + let bytes = self.as_bytes(); + // `\` itself, which the caller has already matched. + let mut end = 1; + while end < bytes.len() && bytes[end].is_ascii_alphabetic() { + end += 1; + } + // The numeric parameter, if there is one. A lone `-` with no digits + // after it is not a parameter, so it is left to the next token. + let digits_start = end + usize::from(end < bytes.len() && bytes[end] == b'-'); + let mut digits_end = digits_start; + while digits_end < bytes.len() && bytes[digits_end].is_ascii_digit() { + digits_end += 1; + } + if digits_end > digits_start { + end = digits_end; + } + // A single space after the word is the delimiter and belongs to it. + // Any other terminator, and any *further* space, is the next token's. + let tail = end + usize::from(end < bytes.len() && bytes[end] == b' '); + return (&self[..end], &self[tail..]); + } + + fn is_only_whitespace(&self) -> bool { + self.chars().all(|c| c.is_ascii_whitespace()) + } +} + +// Macros +// Specify the path to the test files +#[macro_export] +macro_rules! include_test_file { + ($filename:expr) => { + include_str!(concat!("../resources/tests/", $filename)) + }; +} + +// Recursive call to the tokenize method of the lexer +#[macro_export] +macro_rules! recursive_tokenize { + ($tail:expr) => { + Lexer::tokenize($tail) + }; + ($tail:expr, $ret:expr) => { + if $tail.len() > 0 { + if let Ok(tail_tokens) = Lexer::tokenize($tail) { + // Push all the tokens in the result vector + for token in tail_tokens { + $ret.push(token); + } + } + } + }; +} + +#[macro_export] +macro_rules! recursive_tokenize_with_init { + ($init:expr, $tail:expr) => {{ + let mut ret = vec![$init]; + recursive_tokenize!($tail, ret); + return Ok(ret); + }}; +} + +#[cfg(test)] +mod test { + use super::*; + + // LOCAL PATCH (QuickSearch): the two `split_first_whitespace` tests went + // with the function they covered. `split_control_word` is exercised from + // QuickSearch's own suite instead — `src/extract/rtf.rs` and + // `tests/extraction_corpus.rs` — because this crate is excluded from the + // workspace and `cargo test` never reaches these. + #[test] + fn test_split_control_word() { + // A space delimiter belongs to the word; anything else does not. + assert_eq!(r"\b I'm bold".split_control_word(), (r"\b", r"I'm bold")); + assert_eq!(r"\u233?after".split_control_word(), (r"\u233", "?after")); + assert_eq!(r"\u-233\'3f".split_control_word(), (r"\u-233", r"\'3f")); + // A second space is text, not a second delimiter. + assert_eq!(r"\b bold".split_control_word(), (r"\b", " bold")); + // A lone `-` is not a numeric parameter. + assert_eq!(r"\b-x".split_control_word(), (r"\b", "-x")); + // Nothing after the word at all. + assert_eq!(r"\par".split_control_word(), (r"\par", "")); + } +}