Section: C Library Functions (3)
Updated: 13 January 2012
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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);  


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]_exec() used
  stringcount   Value returned by pcre[16]_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]_malloc(). The convenience function pcre[16]_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.




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Time: 06:35:13 GMT, January 20, 2018