html5ever
lol-html
html5ever | lol-html | |
---|---|---|
5 | 8 | |
1,987 | 1,396 | |
1.3% | 1.1% | |
7.6 | 5.7 | |
10 days ago | about 2 months ago | |
Rust | Rust | |
GNU General Public License v3.0 or later | BSD 3-clause "New" or "Revised" License |
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html5ever
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I'm fed up with it, so I'm writing a browser
Would you consider using some libraries in your project? There are lots of good ones in the Rust ecosystem, and many of them are not part of any existing browsers.
For example:
- https://github.com/servo/html5ever (HTML parsing - note: this is used in Servo)
- https://github.com/parcel-bundler/lightningcss (CSS parsing)
- https://github.com/DioxusLabs/taffy (web layout)
- https://github.com/pop-os/cosmic-text (text layout and rendering)
Obviously you should be free to work on whatever you like, but just as a benchmark on the scope of your project: I spent ~6 months implementing just the CSS Grid algorithm in Taffy last year. An entire browser from literal scratch is probably a 10 year project for one person.
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Ask HN: A fast, Rust HTML parser that works?
So I'm doing some web scraping in Rust, and so I will need to parse HTML. [scraper](https://docs.rs/scraper/latest/scraper/) (which uses [html5ever](https://github.com/servo/html5ever)) is doing fine except that it's the bottleneck of my application.
So I need a faster parser. I've tried [tl](https://docs.rs/tl/latest/tl/) which would've been perfect except that it doesn't actually work on the HTML I have. When I try to `query_selector` the elements I need, it returns nothing.
[Kuchiki](https://docs.rs/kuchiki/latest/kuchiki/) is abandonded.
I couldn't figure out how to get [lol-html](https://github.com/cloudflare/lol-html) to work for me (it's designed for re-writing HTML, whatever that means). It doesn't seem to have an API to extract the inner text of an element.
[html5gum](https://github.com/untitaker/html5gum) seems to be just an HTML tokenizer, or otherwise just too low-level. I have not yet tried [quick-xml](https://github.com/tafia/quick-xml/) but judging from the README, it's pretty low-level too. I mean, if these are the only options left then I will try them. Otherwise, I would love to use a parser that's faster but as ergonomic as `scraper` or `tl`.
At this point, I would be happy with an Lxml bridge/port of some sort. I don't need to mutate HTML, just parse and read data from it.
- Any HTML parsing resources without going straight to W3C?
- I’m developing rust module like google pagespeed nginx module, which will rewrite html for each request it received for dynamic optimisation. what library is fastest to do this? I’m using this now
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What is the best way to parse HTML tags?
See https://github.com/servo/html5ever/tree/master/rcdom for an example implementation to imitate.
lol-html
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Ask HN: A fast, Rust HTML parser that works?
So I'm doing some web scraping in Rust, and so I will need to parse HTML. [scraper](https://docs.rs/scraper/latest/scraper/) (which uses [html5ever](https://github.com/servo/html5ever)) is doing fine except that it's the bottleneck of my application.
So I need a faster parser. I've tried [tl](https://docs.rs/tl/latest/tl/) which would've been perfect except that it doesn't actually work on the HTML I have. When I try to `query_selector` the elements I need, it returns nothing.
[Kuchiki](https://docs.rs/kuchiki/latest/kuchiki/) is abandonded.
I couldn't figure out how to get [lol-html](https://github.com/cloudflare/lol-html) to work for me (it's designed for re-writing HTML, whatever that means). It doesn't seem to have an API to extract the inner text of an element.
[html5gum](https://github.com/untitaker/html5gum) seems to be just an HTML tokenizer, or otherwise just too low-level. I have not yet tried [quick-xml](https://github.com/tafia/quick-xml/) but judging from the README, it's pretty low-level too. I mean, if these are the only options left then I will try them. Otherwise, I would love to use a parser that's faster but as ergonomic as `scraper` or `tl`.
At this point, I would be happy with an Lxml bridge/port of some sort. I don't need to mutate HTML, just parse and read data from it.
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How much Rust work is actually going on at Cloudflare?
I'm also in the Workers org but I have had a bit of interaction with Rust. There's some Rust in the Workers runtime using lol-html for HTMLRewriter as well as some tooling and there's the full blown workers-rs framework that I work on, but that's about it for the Rust I work on regularly.
- Is there a library for manipulating HTML?
- pup: Parsing HTML at the Command Line
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Texting Robots: Taming robots.txt with Rust and 34 million tests
Thanks again and happy to answer any questions! My current unreleased Rust projects include a web crawler that uses Tokio + Tokio Console + Reqwest with this crate for robots.txt and a fast text extraction library using lol-html that I am planning to sprinkle with some minimal ML to get Readability.js style intelligent extraction (with training in Python). See Fathom for an example of the ML approach I'll likely take.
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Like JQ, but for HTML
I’d like to see a tool using lol-html [0] and their CSS selector API as a streaming HTML editor.
[0] https://github.com/cloudflare/lol-html
- Things you can’t do in Rust (and what to do instead)
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Problems with building a backend app in Rust in 2020
Cloudflare has open sourced lol-html, a "Low output latency streaming HTML parser/rewriter with CSS selector-based API". Is that what you are looking for?
What are some alternatives?
rust-htmlescape - A HTML entity encoding library for Rust
actor-rust-scraper - Experimental scraper in Rust suited for running locally or on the Apify platform. Inspired by Apify SDK.
serde - Serialization framework for Rust
tq - Perform a lookup by CSS selector on an HTML input
byteorder - Rust library for reading/writing numbers in big-endian and little-endian.
yq - Command-line YAML, XML, TOML processor - jq wrapper for YAML/XML/TOML documents
retrokit - :joystick: Bring back the old Web(Kit) and make it secure
tools - all-in collection of productivity scripts, CLI tools, utility libraries, fuse filesystems, and also some stuff
bincode - A binary encoder / decoder implementation in Rust.
hq - lightweight command line HTML processor using CSS and XPath selectors
tersenet - A new type of JavaScript-free light-weight fast browser built on rst and web assembly. Does not actually exist.
cargo-expand - Subcommand to show result of macro expansion