Modest
lexbor
| Modest | lexbor | |
|---|---|---|
| 1 | 10 | |
| 714 | 891 | |
| - | 2.0% | |
| 10.0 | 8.3 | |
| over 2 years ago | 10 days ago | |
| C | C | |
| GNU Lesser General Public License v3.0 only | Apache License 2.0 |
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Modest
lexbor
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Modest: A fast HTML renderer implemented as a pure C99 library
Project is deprecated in favour of the same developer's lexbor project[0].
[0]: https://github.com/lexbor/lexbor
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Created a performance-focused HTML5 parser for Ruby, trying to be API-compatible with Nokogiri
It supports both CSS selectors and XPath like Nokogiri, but with separate engines - parsing and CSS engine by Lexbor, XPath engine by libxml2. (Nokogiri internally converts CSS selectors to XPath syntax, and uses XPath engine for all searches).
- Lexbor: Fast HTML Renderer library in C
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Andreas Kling (of SerenityOS fame) is building a new Linux browser using SerenityOS libraries
An HTML parser, probably the simplest relatively modern example I could find is 1MB https://github.com/lexbor/lexbor (haven't used it, but might look more into it now that I know it exists.)
- Lexbor: Open-source HTML Renderer library in C
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The State of Web Scraping in 2021
Lazyweb link: https://github.com/rushter/selectolax
although I don't follow the need to have what appears to be two completely separate HTML parsing C libraries as dependencies; seeing this in the readme for Modest gives me the shivers because lxml has _seen some shit_
> Modest is a fast HTML renderer implemented as a pure C99 library with no outside dependencies.
although its other dep seems much more cognizant about the HTML5 standard, for whatever that's worth: https://github.com/lexbor/lexbor#lexbor
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> It looks like the author of the article just googled some libraries for each language and didn't research the topic
Heh, oh, new to the Internet, are you? :-D
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Libraries for retrivieng html data from website
Lexbor is here: https://github.com/lexbor/lexbor
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What second language to learn after Python?
Well, regarding HTML5, what I've found was libxml (does not support tag-soup HTML5), https://github.com/lexbor/lexbor, for which I was unable to find good documentation ( see https://lexbor.com/docs/lexbor/#dom), Apache Xerces (appears to not support tag-soup HTML5 as well), and Gumbo, which does not appear to be active and to support selectors and XPath (although there are libraries that add that).
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You can't parse [X]HTML with regex
I think we've all (mostly?) tried it. It really is the Wild West of the web when you're trying to parse other people's HTML, though.
I've played around with this parser which is extremely quick. https://github.com/lexbor/lexbor
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How SerpApi sped up data extraction from HTML from 3s to 800ms (or How to profile and optimize Ruby code and C extension)
I’m glad to have the opportunity to contribute to an open-source project that is used by thousands of people. Hopefully, we will speed up Nokogiri (or XML parser it uses) to match the performance of html5ever or lexbor at some point in the future. 800 ms to extract data from HTML is still too much.
What are some alternatives?
myhtml - Fast C/C++ HTML 5 Parser. Using threads.
selectolax - Python binding to Modest and Lexbor engines (fast HTML5 parser with CSS selectors).
gumbo-parser - An HTML5 parsing library in pure C99
Xerces-C++ - Apache Xerces-C validating XML parser
nokogiri-rust - Ruby FFI wrapper around scraper crate to be used instead of Nokogiri. Status: proof of concept.
pyppeteer - Headless chrome/chromium automation library (unofficial port of puppeteer)
bcc - BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more
CPython - The Python programming language
colly - Elegant Scraper and Crawler Framework for Golang
lambdasoup - Functional HTML scraping and rewriting with CSS in OCaml
linux - Linux kernel source tree
utls - Fork of the Go standard TLS library, providing low-level access to the ClientHello for mimicry purposes.