pcresample man page on Aros

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PCRE(3)								       PCRE(3)

       PCRE - Perl-compatible regular expressions


       A simple, complete demonstration program, to get you started with using
       PCRE, is supplied in the file pcredemo.c in the PCRE distribution.

       The program compiles the regular expression that is its first argument,
       and  matches  it	 against the subject string in its second argument. No
       PCRE options are set, and default character tables are used. If	match‐
       ing  succeeds,  the  program  outputs  the  portion of the subject that
       matched, together with the contents of any captured substrings.

       If the -g option is given on the command line, the program then goes on
       to check for further matches of the same regular expression in the same
       subject string. The logic is a little bit tricky because of the	possi‐
       bility  of  matching an empty string. Comments in the code explain what
       is going on.

       On a Unix system that has PCRE installed in /usr/local, you can compile
       the demonstration program using a command like this:

	 gcc -o pcredemo pcredemo.c -I/usr/local/include \
	     -L/usr/local/lib -lpcre

       Then you can run simple tests like this:

	 ./pcredemo 'cat|dog' 'the cat sat on the mat'
	 ./pcredemo -g 'cat|dog' 'the dog sat on the cat'

       Note  that  there  is  a	 much  more comprehensive test program, called
       pcretest, which supports	 many  more  facilities	 for  testing  regular
       expressions and the PCRE library. The pcredemo program is provided as a
       simple coding example.

       On some operating systems (e.g. Solaris) you may get an error like this
       when you try to run pcredemo:

	 ld.so.1:  a.out:  fatal:  libpcre.so.0:  open failed: No such file or

       This is caused by the way shared library support works  on  those  sys‐
       tems. You need to add


       to the compile command to get round this problem.

Last updated: 28 January 2003
Copyright (c) 1997-2003 University of Cambridge.


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