62 lines
2.2 KiB
Markdown
62 lines
2.2 KiB
Markdown
# PCRE2 - Perl-Compatible Regular Expressions
|
|
|
|
The PCRE2 library is a set of C functions that implement regular expression
|
|
pattern matching using the same syntax and semantics as Perl 5. PCRE2 has its
|
|
own native API, as well as a set of wrapper functions that correspond to the
|
|
POSIX regular expression API. The PCRE2 library is free, even for building
|
|
proprietary software. It comes in three forms, for processing 8-bit, 16-bit,
|
|
or 32-bit code units, in either literal or UTF encoding.
|
|
|
|
PCRE2 was first released in 2015 to replace the API in the original PCRE
|
|
library, which is now obsolete and no longer maintained. As well as a more
|
|
flexible API, the code of PCRE2 has been much improved since the fork.
|
|
|
|
## Download
|
|
|
|
As well as downloading from this site, you can download PCRE2 or the older,
|
|
unmaintained PCRE1 library from an *unofficial* mirror at SourceForge:
|
|
|
|
https://sourceforge.net/projects/pcre/files/
|
|
|
|
You can check out the PCRE2 source code via Git or Subversion:
|
|
|
|
git clone https://github.com/PhilipHazel/pcre2.git
|
|
svn co https://github.com/PhilipHazel/pcre2.git
|
|
|
|
## Contributed Ports
|
|
|
|
If you just need the command-line PCRE2 tools on Windows, precompiled binary
|
|
versions are available here:
|
|
|
|
http://www.rexegg.com/pcregrep-pcretest.html
|
|
|
|
A PCRE2 port for z/OS, a mainframe operating system which uses EBCDIC as its
|
|
default character encoding, can be found here:
|
|
|
|
http://www.cbttape.org/ (File 939)
|
|
|
|
## Documentation
|
|
|
|
You can read the PCRE2 documentation here:
|
|
|
|
https://philiphazel.github.io/pcre2/doc/html/index.html
|
|
|
|
Comparisons to Perl's regular expression semantics can be found in the
|
|
community authored Wikipedia entry for PCRE.
|
|
|
|
There is a curated summary of changes for each PCRE release, copies of
|
|
documentation from older releases, and other useful information from the third
|
|
party authored RexEgg PCRE Documentation and Change Log page:
|
|
|
|
http://www.rexegg.com/pcre-documentation.html
|
|
|
|
## Contact
|
|
|
|
To report a problem with the PCRE2 library, or to make a feature request, please
|
|
use the PCRE2 GitHub issues tracker. There is a mailing list for discussion of
|
|
PCRE2 issues and development at pcre2-dev@googlegroups.com, which is where any
|
|
announcements will be made. You can browse the list archives here:
|
|
|
|
https://groups.google.com/g/pcre2-dev
|
|
|