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<title>pcre_get_substring specification</title>
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<h1>pcre_get_substring man page</h1>
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<br>
<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include <pcre.h></b>
</P>
<P>
<b>int pcre_get_substring(const char *<i>subject</i>, int *<i>ovector</i>,</b>
<b> int <i>stringcount</i>, int <i>stringnumber</i>,</b>
<b> const char **<i>stringptr</i>);</b>
<br>
<br>
<b>int pcre16_get_substring(PCRE_SPTR16 <i>subject</i>, int *<i>ovector</i>,</b>
<b> int <i>stringcount</i>, int <i>stringnumber</i>,</b>
<b> PCRE_SPTR16 *<i>stringptr</i>);</b>
<br>
<br>
<b>int pcre32_get_substring(PCRE_SPTR32 <i>subject</i>, int *<i>ovector</i>,</b>
<b> int <i>stringcount</i>, int <i>stringnumber</i>,</b>
<b> PCRE_SPTR32 *<i>stringptr</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This is a convenience function for extracting a captured substring. The
arguments are:
<pre>
<i>subject</i> Subject that has been successfully matched
<i>ovector</i> Offset vector that <b>pcre[16|32]_exec()</b> used
<i>stringcount</i> Value returned by <b>pcre[16|32]_exec()</b>
<i>stringnumber</i> Number of the required substring
<i>stringptr</i> Where to put the string pointer
</pre>
The memory in which the substring is placed is obtained by calling
<b>pcre[16|32]_malloc()</b>. The convenience function
<b>pcre[16|32]_free_substring()</b> can be used to free it when it is no longer
needed. The yield of the function is the length of the substring,
PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, or
PCRE_ERROR_NOSUBSTRING if the string number is invalid.
</P>
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There is a complete description of the PCRE native API in the
<a href="pcreapi.html"><b>pcreapi</b></a>
page and a description of the POSIX API in the
<a href="pcreposix.html"><b>pcreposix</b></a>
page.
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