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PCRE_GET_SUBSTRING(3)      Library Functions Manual      PCRE_GET_SUBSTRING(3)

NAME
       PCRE - Perl-compatible regular expressions
SYNOPSIS
       #include <pcre.h>
       int pcre_get_substring(const char *subject, int *ovector,
            int stringcount, int stringnumber,
            const char **stringptr);
       int pcre16_get_substring(PCRE_SPTR16 subject, int *ovector,
            int stringcount, int stringnumber,
            PCRE_SPTR16 *stringptr);
       int pcre32_get_substring(PCRE_SPTR32 subject, int *ovector,
            int stringcount, int stringnumber,
            PCRE_SPTR32 *stringptr);
DESCRIPTION
       This is a convenience function for extracting a captured substring. The
       arguments are:
         subject       Subject that has been successfully matched
         ovector       Offset vector that pcre[16|32]_exec() used
         stringcount   Value returned by pcre[16|32]_exec()
         stringnumber  Number of the required substring
         stringptr     Where to put the string pointer
       The memory in which the substring is  placed  is  obtained  by  calling
       pcre[16|32]_malloc().  The  convenience  function pcre[16|32]_free_sub-
       string() can be used to free it when it is no longer needed. The  yield
       of  the function is the length of the substring, PCRE_ERROR_NOMEMORY if
       sufficient memory could not be obtained, or  PCRE_ERROR_NOSUBSTRING  if
       the string number is invalid.
       There  is  a complete description of the PCRE native API in the pcreapi
       page and a description of the POSIX API in the pcreposix page.

PCRE 8.30                        24 June 2012            PCRE_GET_SUBSTRING(3)