Annotation of embedaddon/pcre/doc/html/pcresample.html, revision 1.1
1.1 ! misho 1: <html>
! 2: <head>
! 3: <title>pcresample specification</title>
! 4: </head>
! 5: <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
! 6: <h1>pcresample man page</h1>
! 7: <p>
! 8: Return to the <a href="index.html">PCRE index page</a>.
! 9: </p>
! 10: <p>
! 11: This page is part of the PCRE HTML documentation. It was generated automatically
! 12: from the original man page. If there is any nonsense in it, please consult the
! 13: man page, in case the conversion went wrong.
! 14: <br>
! 15: <br><b>
! 16: PCRE SAMPLE PROGRAM
! 17: </b><br>
! 18: <P>
! 19: A simple, complete demonstration program, to get you started with using PCRE,
! 20: is supplied in the file <i>pcredemo.c</i> in the PCRE distribution. A listing of
! 21: this program is given in the
! 22: <a href="pcredemo.html"><b>pcredemo</b></a>
! 23: documentation. If you do not have a copy of the PCRE distribution, you can save
! 24: this listing to re-create <i>pcredemo.c</i>.
! 25: </P>
! 26: <P>
! 27: The program compiles the regular expression that is its first argument, and
! 28: matches it against the subject string in its second argument. No PCRE options
! 29: are set, and default character tables are used. If matching succeeds, the
! 30: program outputs the portion of the subject that matched, together with the
! 31: contents of any captured substrings.
! 32: </P>
! 33: <P>
! 34: If the -g option is given on the command line, the program then goes on to
! 35: check for further matches of the same regular expression in the same subject
! 36: string. The logic is a little bit tricky because of the possibility of matching
! 37: an empty string. Comments in the code explain what is going on.
! 38: </P>
! 39: <P>
! 40: If PCRE is installed in the standard include and library directories for your
! 41: operating system, you should be able to compile the demonstration program using
! 42: this command:
! 43: <pre>
! 44: gcc -o pcredemo pcredemo.c -lpcre
! 45: </pre>
! 46: If PCRE is installed elsewhere, you may need to add additional options to the
! 47: command line. For example, on a Unix-like system that has PCRE installed in
! 48: <i>/usr/local</i>, you can compile the demonstration program using a command
! 49: like this:
! 50: <pre>
! 51: gcc -o pcredemo -I/usr/local/include pcredemo.c -L/usr/local/lib -lpcre
! 52: </pre>
! 53: In a Windows environment, if you want to statically link the program against a
! 54: non-dll <b>pcre.a</b> file, you must uncomment the line that defines PCRE_STATIC
! 55: before including <b>pcre.h</b>, because otherwise the <b>pcre_malloc()</b> and
! 56: <b>pcre_free()</b> exported functions will be declared
! 57: <b>__declspec(dllimport)</b>, with unwanted results.
! 58: </P>
! 59: <P>
! 60: Once you have compiled and linked the demonstration program, you can run simple
! 61: tests like this:
! 62: <pre>
! 63: ./pcredemo 'cat|dog' 'the cat sat on the mat'
! 64: ./pcredemo -g 'cat|dog' 'the dog sat on the cat'
! 65: </pre>
! 66: Note that there is a much more comprehensive test program, called
! 67: <a href="pcretest.html"><b>pcretest</b>,</a>
! 68: which supports many more facilities for testing regular expressions and the
! 69: PCRE library. The
! 70: <a href="pcredemo.html"><b>pcredemo</b></a>
! 71: program is provided as a simple coding example.
! 72: </P>
! 73: <P>
! 74: If you try to run
! 75: <a href="pcredemo.html"><b>pcredemo</b></a>
! 76: when PCRE is not installed in the standard library directory, you may get an
! 77: error like this on some operating systems (e.g. Solaris):
! 78: <pre>
! 79: ld.so.1: a.out: fatal: libpcre.so.0: open failed: No such file or directory
! 80: </pre>
! 81: This is caused by the way shared library support works on those systems. You
! 82: need to add
! 83: <pre>
! 84: -R/usr/local/lib
! 85: </pre>
! 86: (for example) to the compile command to get round this problem.
! 87: </P>
! 88: <br><b>
! 89: AUTHOR
! 90: </b><br>
! 91: <P>
! 92: Philip Hazel
! 93: <br>
! 94: University Computing Service
! 95: <br>
! 96: Cambridge CB2 3QH, England.
! 97: <br>
! 98: </P>
! 99: <br><b>
! 100: REVISION
! 101: </b><br>
! 102: <P>
! 103: Last updated: 17 November 2010
! 104: <br>
! 105: Copyright © 1997-2010 University of Cambridge.
! 106: <br>
! 107: <p>
! 108: Return to the <a href="index.html">PCRE index page</a>.
! 109: </p>
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