pcre2_substring_copy_bynumber(3) — Linux manual page
PCRE2_SU..._BYNUMBER(3) Library Functions Manual PCRE2_SU..._BYNUMBER(3)
NAME
PCRE2 - Perl-compatible regular expressions (revised API)
SYNOPSIS
#include <pcre2.h>
int pcre2_substring_copy_bynumber(pcre2_match_data *match_data,
uint32_t number, PCRE2_UCHAR *buffer,
PCRE2_SIZE *bufflen);
DESCRIPTION
This is a convenience function for extracting a captured
substring into a given buffer. The arguments are:
match_data The match data block for the match
number Number of the required substring
buffer Buffer to receive the string
bufflen Length of buffer
The bufflen variable is updated with the length of the extracted
string, excluding the terminating zero. The yield of the function
is zero for success or one of the following error numbers:
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 the buffer is too small
There is a complete description of the PCRE2 native API in the
pcre2api page and a description of the POSIX API in the
pcre2posix page.
COLOPHON
This page is part of the PCRE (Perl Compatible Regular
Expressions) project. Information about the project can be found
at ⟨http://www.pcre.org/⟩. If you have a bug report for this
manual page, see
⟨http://bugs.exim.org/enter_bug.cgi?product=PCRE⟩. This page was
obtained from the tarball fetched from
⟨https://github.com/PhilipHazel/pcre2.git⟩ on 2024-06-14. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org