pcre_copy_substring man page
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SYNOPSIS
#include <pcre.h>
int pcre_copy_substring(const char *subject, int *ovector,int stringcount, int stringnumber, char *buffer,int buffersize);
DESCRIPTION
This is a convenience function for extracting a captured substring into a given
buffer. The arguments are:
  
subject       Subject that has been successfully matched
  
ovector       Offset vector that pcre_exec() used
  
stringcount   Value returned by pcre_exec()  
stringnumber  Number of the required substring
  
buffer        Buffer to receive the string
  
buffersize    Size of buffer
The yield is the legnth of the string, PCRE_ERROR_NOMEMORY if the buffer was
too small, or PCRE_ERROR_NOSUBSTRING if the string number is invalid.
There is a complete description of the PCRE native API in the
pcreapi.htmlpcreapi page and a description of the POSIX API in the
pcreposix.htmlpcreposix page.
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