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Man Pages


Manual Reference Pages  -  PCRE2_SUBSTRING_COPY_BYNUMBER (3)

NAME

PCRE2 - Perl-compatible regular expressions (revised API)

CONTENTS

Synopsis
Description

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.

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PCRE2 10.00 PCRE2_SUBSTRING_COPY_BYNUMBER (3) 13 December 2014

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