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✏️ Editing: pcre2_substring_get_bynumber.html

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<title>pcre2_substring_get_bynumber specification</title>
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<h1>pcre2_substring_get_bynumber man page</h1>

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This page is part of the PCRE2 HTML documentation. It was generated
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please consult the man page, in case the conversion went wrong.
 
 
SYNOPSIS
 

#include &#60;pcre2.h&#62;


int pcre2_substring_get_bynumber(pcre2_match_data *match_data,
 uint32_t number, PCRE2_UCHAR **bufferptr, PCRE2_SIZE *bufflen);

 
DESCRIPTION
 

This is a convenience function for extracting a captured substring by number
into newly acquired memory. The arguments are:
<pre>
 match_data The match data for the match
 number Number of the required substring
 bufferptr Where to put the string pointer
 bufflen Where to put the string length
</pre>
The memory in which the substring is placed is obtained by calling the same
memory allocation function that was used for the match data block. The
convenience function pcre2_substring_free() can be used to free it when
it is no longer needed. The yield of the function is zero for success or one of
the following error numbers:
<pre>
 PCRE2_ERROR_NOSUBSTRING there are no groups of that number
 PCRE2_ERROR_UNAVAILBLE the ovector was too small for that group
 PCRE2_ERROR_UNSET the group did not participate in the match
 PCRE2_ERROR_NOMEMORY memory could not be obtained

</PRE>


There is a complete description of the PCRE2 native API in the
<a href="pcre2api.html">pcre2api</a>
page and a description of the POSIX API in the
<a href="pcre2posix.html">pcre2posix</a>
page.

Return to the <a href="index.html">PCRE2 index page</a>.

MR SKB