/re2

RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
  1. C++ 95.7%
  2. Python 2.0%
  3. Makefile 1.0%
  4. Perl 0.6%
  5. CMake 0.3%
  6. Shell 0.3%
  7. Batchfile 0.1%
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Latest commit 09fc9ce Dec 13, 2016 @junyer junyer Make SimplifyWalker::SimplifyRepeat() use Regexp::Concat(). 
This builds a two-level tree for very large numbers of
subexpressions. When min is greater than 65535 due to
coalescing, for example.

This bug was discovered by the LLVM fuzzer.

Change-Id: I7e21d24f6546b9d8f3a3d844e0ed5c6af246aa1e
Reviewed-on: https://code-review.googlesource.com/9890
Reviewed-by: Paul Wankadia <[email protected]>
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benchlog benchlog: Add gnuplot support Jul 17, 2015
doc Update Unicode data to 8.0.0. Jan 31, 2016
kokoro Flatten the kokoro/ directory structure. (2 of 2) Nov 22, 2016
lib/git Cleanup: Remove hg codereview extension. Apr 9, 2015
re2 Make SimplifyWalker::SimplifyRepeat() use Regexp::Concat(). Dec 13, 2016
util Ignore -Wmisleading-indentation in util/pcre.cc only. Sep 28, 2016
.gitignore re2: exclude benchlog results in .gitignore Jul 10, 2015
AUTHORS re2: make tables const Jan 10, 2014
BUILD Correctly set testonly to test targets Oct 24, 2016
CMakeLists.txt The DLL conventionally goes into the bin/ directory. Nov 15, 2016
CONTRIBUTING.md re2: more Gerrit+GitHub integration Nov 20, 2014
CONTRIBUTORS Remove comparisons of this with NULL. Jun 26, 2014
LICENSE initial release Mar 3, 2010
Makefile Change two uses of LOG(FATAL) to LOG(DFATAL) or DCHECK. Sep 6, 2016
README Mention the R wrapper in the README file. Aug 12, 2016
WORKSPACE Add a workspace name based on Bazel guidelines Jul 1, 2016
libre2.symbols Make the re2_dfa_bail_when_slow knob not a flag. Sep 2, 2016
libre2.symbols.darwin Make the re2_dfa_bail_when_slow knob not a flag. Sep 2, 2016
re2.pc Plumb more variables from Makefile to re2.pc. May 9, 2016
re2_test.bzl Remove includes attributes that will break the build. Apr 14, 2016
runtests Make the dynamic binary tests work on Darwin. Sep 12, 2016
testinstall.cc Get rid of using-directives. Aug 7, 2016
ucs2.diff add ucs2.diff, showing old UCS-2 support Feb 7, 2012

README 

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

There is a fair amount of documentation (including code snippets) in
the re2.h header file.

More information can be found on the wiki:
https://github.com/google/re2/wiki

Issue tracker:
https://github.com/google/re2/issues

Mailing list:
https://groups.google.com/group/re2-dev

Unless otherwise noted, the RE2 source files are distributed
under the BSD-style license found in the LICENSE file.

RE2's native language is C++.

A C wrapper is at https://github.com/marcomaggi/cre2/.
An Erlang wrapper is at https://github.com/tuncer/re2/.
An Inferno wrapper is at https://github.com/powerman/inferno-re2/.
A Node.js wrapper is at https://github.com/uhop/node-re2/ and on NPM.
An OCaml wrapper is at https://github.com/janestreet/re2/ and on OPAM.
A Perl wrapper is at https://github.com/dgl/re-engine-RE2/ and on CPAN.
A Python wrapper is at https://github.com/facebook/pyre2/.
An R wrapper is at https://github.com/qinwf/re2r/.
A Ruby wrapper is at https://github.com/mudge/re2/.