2014年3月21日 · For MacOS monterey amd64 (darwin), it is necessary to create a symlink. First, locate where the pcre.h was installed by Brew:

2011年1月19日 · I was wondering if anyone can list/point me to a list of actual syntax differences between POSIX and PCRE. Or maybe a function that converts a POSIX regex to PCRE regex. This is so that I can convert only the purges going to the newer server - without affecting the current regex syntax that is implemented in the system for the other servers.

2010年9月16日 · I'm trying to compile PCRE (v8.02) for Windows x64, using Vs2008. The "NON-UNIX-USE" file tells me to use cmake to generate a .sln fle. That works. When I run the build it succeeds, with 91 warn...

PCRE_DUPNAMES allows you to assign the same name to two or more groups, even if those groups have different numbers. When the match is finished, there will still be only one value associated with that name, same as with group numbers. PCRE still doesn't provide a way retrieve intermediate captures of repeated groups like .NET does. –

Here's a PCRE regex that will work: \{\w+\} Here's how it works: It's basically looking for {followed by one ore more word characters followed by }. The interesting part is that the word character class actually includes an underscore as well. \w is essentially shorthand for [A-Za-z0-9_]

2020年12月22日 · You can use PCRE: The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE has its own native API, as well as a set of wrapper functions that correspond to the POSIX regular expression API. The PCRE library is free, even for building commercial software.

2021年2月22日 · PCRE doesn't support floating lookbehind because it can cause major performance problems. This is because of the lack of right-to-left matching capability: PCRE can start a branch only from a fixed left, but left of a variable-length lookbehind can not be fixed. Generally, try to branch your lookbehind part to fixed length patterns if possible.

2010年9月19日 · In PCRE (like Python, but unlike Perl), a recursive subpattern call is always treated as an atomic group. That is, once it has matched some of the subject string, it is never re-entered, even if it contains untried alternatives and there is a subsequent matching failure .

2011年2月9日 · Yes, that's right; this is how (?(DEFINE)…) works. It’d like declaring subroutines. I sometimes use all-caps for named capture groups outside the define and lowercase for callable non-capturing groups within it, to help keep the two straight in my head.

2017年8月31日 · Thanks but that will not work for me. I am trying to achieve exactly what the pcre version does. What you showed me will not work if I have > or < or ! or * , also \% is literal for % if not the interpreted will be confused. The string above is just an example. we can have something like 'buddy%'>0 and 'friend%'!=1 then we do not this to much.