2014-10-21 12:33:30 -04:00
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<head>
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<title>pcre2_substring_get_bynumber specification</title>
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</head>
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<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
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<h1>pcre2_substring_get_bynumber man page</h1>
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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<p>
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This page is part of the PCRE2 HTML documentation. It was generated
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automatically from the original man page. If there is any nonsense in it,
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please consult the man page, in case the conversion went wrong.
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<br>
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<br><b>
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SYNOPSIS
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</b><br>
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<P>
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<b>#include <pcre2.h></b>
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</P>
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<P>
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<b>int pcre2_substring_get_bynumber(pcre2_match_data *<i>match_data</i>,</b>
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2014-12-01 11:14:53 -05:00
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<b> uint32_t <i>number</i>, PCRE2_UCHAR **<i>bufferptr</i>, PCRE2_SIZE *<i>bufflen</i>);</b>
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2014-10-21 12:33:30 -04:00
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</P>
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<br><b>
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DESCRIPTION
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</b><br>
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<P>
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2014-12-01 11:14:53 -05:00
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This is a convenience function for extracting a captured substring by number
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into newly acquired memory. The arguments are:
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2014-10-21 12:33:30 -04:00
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<pre>
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<i>match_data</i> The match data for the match
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<i>number</i> Number of the required substring
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<i>bufferptr</i> Where to put the string pointer
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<i>bufflen</i> Where to put the string length
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</pre>
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The memory in which the substring is placed is obtained by calling the same
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memory allocation function that was used for the match data block. The
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convenience function <b>pcre2_substring_free()</b> can be used to free it when
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2014-12-19 04:55:25 -05:00
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it is no longer needed. The yield of the function is zero for success or one of
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the following error numbers:
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<pre>
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PCRE2_ERROR_NOSUBSTRING there are no groups of that number
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PCRE2_ERROR_UNAVAILBLE the ovector was too small for that group
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PCRE2_ERROR_UNSET the group did not participate in the match
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PCRE2_ERROR_NOMEMORY memory could not be obtained
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</PRE>
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2014-10-21 12:33:30 -04:00
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</P>
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<P>
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There is a complete description of the PCRE2 native API in the
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<a href="pcre2api.html"><b>pcre2api</b></a>
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page and a description of the POSIX API in the
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<a href="pcre2posix.html"><b>pcre2posix</b></a>
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page.
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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