Manpages - pcre_get_named_substring.3

PCRE - Perl-compatible regular expressions

#include <pcre.h>

  int pcre_get_named_substring(const pcre *code,
   const char *subject, int *ovector,
   int stringcount, const char *stringname,
   const char **stringptr);

  int pcre16_get_named_substring(const pcre16 *code,
   PCRE_SPTR16 subject, int *ovector,
   int stringcount, PCRE_SPTR16 stringname,
   PCRE_SPTR16 *stringptr);

  int pcre32_get_named_substring(const pcre32 *code,
   PCRE_SPTR32 subject, int *ovector,
   int stringcount, PCRE_SPTR32 stringname,
   PCRE_SPTR32 *stringptr);

This is a convenience function for extracting a captured substring by name. The arguments are:

code Compiled pattern subject Subject that has been successfully matched ovector Offset vector that pcre[16|32]_exec() used stringcount Value returned by pcre[16|32]_exec() stringname Name 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_substring() can be used to free it when it is no longer needed. The yield of the function is the length of the extracted substring, PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, or PCRE_ERROR_NOSUBSTRING if the string name 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.