Top 7 HTML Parser Projects

Crafting Interpreters

45 8,103 0.0 HTML

Repository for the book "Crafting Interpreters"

Project mention: Crafting Interpreters | news.ycombinator.com | 2023-12-26

datefinder

3 625 0.0 HTML

Find dates inside text using Python and get back datetime objects

Project mention: Sneller Regex vs Ripgrep | news.ycombinator.com | 2023-05-18

That's with DFA minimization. Also, '\w' has 311 states while '(?-u)\w' has 5 states.
I don't have a precise definition of enormous or impractical. Does it matter? I suppose one obvious one is when DFA construction time starts having a significant impact on total search times.
> Additionally, the results are not the same: the number of matches is not equal to 7882. How could I make `\w` conform to other regex implementations in ripgrep?
By following UTS#18: https://unicode.org/reports/tr18/#word
Most regex engines make \w be ASCII-only by default. But most also have a way to opt into Unicode-aware mode. RE2, Go's regexp and ECMAScript are popular regex engines that have no way to change the interpretation of \w.
> Fair question how regex compilers handle nefarious regexes. Go does not handle NFA with more than 1000 states, and, as you observed, we added some more restrictions when processing the NFA. It can be an interesting academic exercise to find monstrous regexes, but we haven't encountered useful regexes that hit these limits. But I guess you know some...
It's definitely not academic. People use regexes for lexers. People use big regexes to recognize certain things like email addresses and dates. Here's a real regex used in real software to identify dates in unstructured text for example: https://github.com/akoumjian/datefinder/blob/5376ece0a522c44...
Otherwise, as I hinted at above, the thing that can make regexes very large very quickly is when you mix Unicode classes with counted repetitions. It doesn't take a lot to make them "big."

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
html-query

2 605 7.8 HTML

jq, but for HTML
traprange

1 321 2.1 HTML

(Java)A Method to Extract Tabular Content from PDF Files
RatS

3 254 7.9 HTML

Movie Ratings Synchronization with Python
jaxon

1 193 0.0 HTML

Streaming JSON parser for Elixir
htoml

0 38 0.0 HTML

TOML file format parser in Haskell
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).