The unreasonable effectiveness of fâ€-â€strings and re.VERBOSE
... in which we look at one or two ways to make life easier when working with Python regular expressions. tl;dr: You can compose verbose regular expressions using fâ€-â€strings. Here's a real-world example – instead of this: 1pattern = r"((?:\(\s*)?[A-Z]*H\d+[a-z]*(?:\s*\+\s*[A-Z]*H\d+[a-z]*)*(?:\s*[\):+])?)(.*?)(?=(?:\(\s*)?[A-Z]*H\d+[a-z]*(?:\s*\+\s*[A-Z]*H\d+[a-z]*)*(?:\s*[\):+])?(?![^\w\s])|$)"
GitHub - pemistahl/grex: A command-line tool and Rust library with Python bindings for generating regular expressions from user-provided test cases
grex is a library as well as a command-line utility that is meant to simplify the often complicated and tedious task of creating regular expressions. It does so by automatically generating a single regular expression from user-provided test cases. The resulting expression is guaranteed to match the test cases which it was generated from. This project has started as a Rust port of the JavaScript to
GitHub - axiak/pyre2: Python wrapper for RE2
The stated goal of this module is to be a drop-in replacement for re. My hope is that some will be able to go to the top of their module and put: try: import re2 as re except ImportError: import re That being said, there are features of the re module that this module may never have. For example, RE2 does not handle lookahead assertions ((?=...)). For this reason, the module will automatically fall
GitHub - openresty/sregex: A non-backtracking NFA/DFA-based Perl-compatible regex engine matching on large data streams
This library is already quite usable and some people are already using it in production. Nevertheless this library is still under heavy development. The API is still in flux and may be changed quickly without notice. This is a pure C library that is designed to have zero dependencies. No pathological regexes exist for this regex engine because it does not use a backtracking algorithm at all. Alrea
ReDoS - Wikipedia
A regular expression denial of service (ReDoS)[1] is an algorithmic complexity attack that produces a denial-of-service by providing a regular expression and/or an input that takes a long time to evaluate. The attack exploits the fact that many[2] regular expression implementations have super-linear worst-case complexity; on certain regex-input pairs, the time taken can grow polynomially or expone
Ragel State Machine Compiler
Ragel compiles executable finite state machines from regular languages. Ragel targets C, C++ and ASM. Ragel state machines can not only recognize byte sequences as regular expression machines do, but can also execute code at arbitrary points in the recognition of a regular language. Code embedding is done using inline operators that do not disrupt the regular language syntax. The core language con
re2 - Project Hosting on Google Code
This is the source code repository for RE2, a regular expression library. For documentation about how to install and use RE2, visit https://github.com/google/re2/. The short version is: make make test make install make testinstall Building RE2 requires Abseil (https://github.com/abseil/abseil-cpp) to be installed on your system. Building the testing for RE2 requires GoogleTest (https://github.com/
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GitHub - nezaboodka/nevod: Nevod is a language and technology for pattern-based text search.
GitHub - nitely/nim-regex: Pure Nim regex engine. Guarantees linear time matching
Rosie Pattern Language / Rosie · GitLab
GitHub - k-takata/Onigmo: Onigmo is a regular expressions library forked from Oniguruma.
GitHub - BurntSushi/ripgrep: ripgrep recursively searches directories for a regex pattern
GitHub - google/redgrep: ♥ Janusz Brzozowski
beautiful.html - A Regular Expression Matcher - Code by Rob Pike - Exegesis by Brian Kernigha
GitHub - andychu/bwk: Kernighan's Awk a.k.a. "One True Awk"
GitHub - zeux/qgrep: Fast regular expression grep for source code with incremental index updates
GitHub - jonstewart/liblightgrep: not the worst forensics regexp—this is not the primary repo; caveat programmer
GitHub - kkos/oniguruma: regular expression library
google/codesearch: Fast, indexed regexp search over large file trees
GitHub - awslabs/git-secrets: Prevents you from committing secrets and credentials into git repositories
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