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(3) page and a description of the POSIX API in the pcreposix(3) page.


This manual page is taken from the PCRE library, which is distributed under the BSD license.