pcre2/doc/html/pcre2_substring_length_bynu...

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<html>
<head>
<title>pcre2_substring_length_bynumber specification</title>
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<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre2_substring_length_bynumber man page</h1>
<p>
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<p>
This page is part of the PCRE2 HTML documentation. It was generated
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<br>
<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include &#60;pcre2.h&#62;</b>
</P>
<P>
<b>int pcre2_substring_length_bynumber(pcre2_match_data *<i>match_data</i>,</b>
<b> uint32_t <i>number</i>, PCRE2_SIZE *<i>length</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function returns the length of a matched substring, identified by number.
The arguments are:
<pre>
<i>match_data</i> The match data block for the match
<i>number</i> The substring number
<i>length</i> Where to return the length, or NULL
</pre>
The third argument may be NULL if all you want to know is whether or not a
substring is set. The yield is zero on success, or a negative error code
otherwise. After a partial match, only substring 0 is available.
</P>
<P>
There is a complete description of the PCRE2 native API in the
<a href="pcre2api.html"><b>pcre2api</b></a>
page and a description of the POSIX API in the
<a href="pcre2posix.html"><b>pcre2posix</b></a>
page.
<p>
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