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.
C++ Python Makefile Perl CMake Shell Batchfile
Latest commit d2b6395 Sep 12, 2017 @junyer junyer Add Clang 5.0 to the Travis CI matrix.
Change-Id: Idf299f63dfc7b95457158d2eb0a35598a3d0c8f4
Reviewed-on: https://code-review.googlesource.com/16810
Reviewed-by: Paul Wankadia <junyer@google.com>
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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/.