tantivy
regex
tantivy | regex | |
---|---|---|
18 | 91 | |
5,829 | 3,355 | |
- | 1.4% | |
9.3 | 8.9 | |
over 2 years ago | 12 days ago | |
Rust | Rust | |
MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
tantivy
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Hey y'all back again w/ the personal, self-hosted search engine
Backend uses tantivy to index the web pages, sqlite3 to hold metadata / crawl queue
- Ask HN: What are some good rust code to read to learn the language?
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Looking for recommendations of well maintained open source rust codebases that I can look through/contribute to
Tantivy is a very well made library and also follows alot of the best practices if you like search you'll like this: https://github.com/quickwit-inc/tantivy
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self hosted elasticsearch alternative
tantivy - More of a search engine library than out of the box solution
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Whats your favourite open source Rust project that needs more recognition?
Tantivy search engine.
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Is there a library for instant arbitrary text searching?
You could try the Tantivy crate, with an n-gram tokenizer, which would split and index your text in sliding groups of n characters.
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Zest: a CLI tool for zettelkasten-like note management
I had to look up the "tantivy" that README mentions. https://github.com/tantivy-search/tantivy. Might want to add a link to the project in your README.
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Are you using Rust at work? If yes, for what?
We're using Rust for a domain-specific search engine. When I first learned Rust some years ago my first thought was that this language is perfect for heavy text processing. IMO, &str is that single killer feature that got me sold :) The search engine that we're building is based on https://github.com/tantivy-search/tantivy.
- Tantivy, a full-text search engine library in Rust inspired by Apache Lucene
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Tantivy v0.15 released! Now backed by Quickwit Inc.!
Well spotted. Like IPFS, there's a comment about that here: https://github.com/tantivy-search/tantivy/pull/1067#issuecomment-853139923 that points to the distributed wikipedia mirror project https://github.com/ipfs/distributed-wikipedia-mirror/issues/76
regex
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Zed is now open source
The homepage has a benchmark that compares Zed's "insertion latency" to other editors, and this is the description:
> Open input.rs at the end of line 21 in rust-lang/regex. Type z 10 times, measure how long it takes for each z to display since hitting the z key.
Could someone clarify what that means? My interpretation of that was to go to https://github.com/rust-lang/regex/blob/master/regex-cli/arg... and start typing 'z' at the end of line 21, but that doesn't seem to make any sense. I guess that repo got refactored and those instructions are out of date?
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CryptoFlow: Building a secure and scalable system with Axum and SvelteKit - Part 3
We also used the avenue to sluggify the question title. We used regex to fish out and replace all occurrences of punctuation and symbol characters with an empty string and using the itertools crate, we joined the words back together into a single string, where each word is separated by a hyphen ("-").
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Command Line Rust is a great book
Command-Line Rust taught me how to use crates like clap, assert_cmd, and regex. I felt lost before because I didn't know about Rust's ecosystem--which is arguably as important as the language itself. Also, looking up and comparing libraries is a tiring task! blessed.rs is nice but Command-Line Rust really saved me from analysis paralysis.
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Common Rust Lifetime Misconceptions
burntsushi actually regrets making regex replace return a Cow: https://github.com/rust-lang/regex/issues/676#issuecomment-6.... I’m glad it does, and wish it took an impl Into> there, for the reasons discussed in the issue, but burntsushi has a lot more experience of the practical outcomes of this. Just something more to think about.
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Advent of Code 2023 is nigh
I'm not familiar with the AoC problem. You might be able to. But RegexSet doesn't give you match offsets.
You can drop down to regex-automata, which does let you do multi-regex search and it will tell you which patterns match[1]. The docs have an example of a simple lexer[2]. But... that will only give you non-overlapping matches.
You can drop down to an even lower level of abstraction and get multi-pattern overlapping matches[3], but it's awkward. The comment there explains that I had initially tried to provide a higher level API for it, but was unsure of what the semantics should be. Getting the starting position in particular is a bit of a wrinkle.
[1]: https://docs.rs/regex-automata/latest/regex_automata/meta/in...
[2]: https://docs.rs/regex-automata/latest/regex_automata/meta/st...
[3]: https://github.com/rust-lang/regex/blob/837fd85e79fac2a4ea64...
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Text Showdown: Gap Buffers vs. Ropes
It’s not quite that simple, but folks are working on it.
https://github.com/rust-lang/regex/issues/425#issuecomment-1...
https://github.com/helix-editor/helix/pull/211#issuecomment-...
- Please ask questions (rust-lang/regex)
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ScripterC - Rust-lang set
Dependencies used: - regex - unicode_reader - rust decimal - tokio
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Regex Engine Internals as a Library
https://www.cs.princeton.edu/courses/archive/fall19/cos226/l... and https://kean.blog/post/lets-build-regex are excellent introductions to implementing a (very) simplified regex engine: construct a nondetermistic finite state automaton for the regex, then perform a graph search on the resulting digraph; if the vertex corresponding to your end state is reachable, you have a match.
I think this exercise is valuable for anyone writing regexes to not only understand that there's less magic than one might think, but also to visualize a bunch of balls bouncing along an NFA - that bug you inevitably hit in production due to catastrophic backtracking now takes on a physical meaning!
Separately re: the OP, https://github.com/rust-lang/regex/issues/822 (and specifically BurntSushi's comment at the very end of the issue) adds really useful context to the paragraph in the OP about niche APIs: https://blog.burntsushi.net/regex-internals/#problem-request... - searching with multiple regexes simultaneously against a text is both incredibly complex and incredibly useful, and I can't wait to see what the community comes up with for this pattern!
What are some alternatives?
sonic - 🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.
re2 - modern regular expression syntax everywhere with a painless upgrade path [Moved to: https://github.com/SonOfLilit/kleenexp]
tantivy-wasm
node-re2 - node.js bindings for RE2: fast, safe alternative to backtracking regular expression engines.
pueue - :stars: Manage your shell commands.
zig - General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
neon - Rust bindings for writing safe and fast native Node.js modules.
ngrams - (Read-only) Generate n-grams
neuron - Future-proof note-taking and publishing based on Zettelkasten (superseded by Emanote: https://github.com/srid/emanote)
regex-benchmark - It's just a simple regex benchmark of different programming languages.
zk - A plain text note-taking assistant
whatlang-rs - Natural language detection library for Rust. Try demo online: https://whatlang.org/