pcre2_substring_length_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_length_bynumber(pcre2_match_data *match_data,
uint32_t number, PCRE2_SIZE *length);
DESCRIPTION
This function returns the length of a matched substring,
identified by number. The arguments are:
match_data The match data block for the match
number The substring number
length Where to return the length, or NULL
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.
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