pcre2_match_data_create_from_pattern(3) Library Functions Manual
NAME
PCRE2 - Perl-compatible regular expressions (revised API)
SYNOPSIS
#include <pcre2.h>
pcre2_match_data_create_from_pattern(3)
const pcre2_code *code, pcre2_general_context *gcontext);
DESCRIPTION
This function creates a new match data block for holding the result of
a match. If the first argument is NULL, this function returns NULL,
otherwise the first argument points to a compiled pattern. The number
of capturing parentheses within the pattern is used to compute the
number of pairs of offsets that are required in the match data block.
These form the "output vector" (ovector) within the match data block,
and are used to identify the matched string and any captured substrings
when matching with pcre2_match(). If you are using pcre2_dfa_match(),
which uses the output vector in a different way, you should use
pcre2_match_data_create() instead of this function.
The second argument points to a general context, for custom memory
management, or is NULL to use the same memory allocator that was used
for the compiled pattern. The result of the function is NULL if the
memory for the block could not be obtained or if NULL was provided as
the first argument.
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.
PCRE2 10.47 11 August 2025
pcre2_match_data_create_from_pattern(3)
pcre2 10.47 - Generated Fri Dec 12 07:36:48 CST 2025