PCRE(3)

NAME
PCRE - Perl-compatible regular expressions

SYNOPSIS

#include <pcre.h>

int pcre_copy_named_substring(const pcre *code,
const char *subject, int *ovector,
int stringcount, const char *stringname,
char *buffer, int buffersize);

DESCRIPTION

This is a convenience function for extracting a captured substring, identified by name, into a given buffer. The arguments are:
  code Pattern that was successfully matched
  subject Subject that has been successfully matched
  ovector Offset vector that pcre_exec() used
  stringcount Value returned by pcre_exec()
  stringname Name of the required substring
  buffer Buffer to receive the string
  buffersize Size of buffer The yield is the length of the substring, PCRE_ERROR_NOMEMORY if the buffer was too small, or PCRE_ERROR_NOSUBSTRING if the string name is invalid. There is a complete description of the PCRE API in the pcreapi page.