PCRE2 — Perl-compatible regular expressions (revised API)
#include <pcre2.h> int pcre2_substring_copy_bynumber(pcre2_match_data *match_data, uint32_tnumber, PCRE2_UCHAR *buffer, PCRE2_SIZE *bufflen);
This is a convenience function for extracting a captured substring into a given buffer. The arguments are:
match_dataThe match data block for the matchnumberNumber of the required substringbufferBuffer to receive the stringbufflenLength of buffer
The bufflen variable is
updated with the length of the extracted string, excluding
the terminating zero. The yield of the function is zero for
success or one of the following error numbers:
PCRE2_ERROR_NOSUBSTRING there are no groups of that number PCRE2_ERROR_UNAVAILBLE the ovector was too small for that group PCRE2_ERROR_UNSET the group did not participate in the match PCRE2_ERROR_NOMEMORY the buffer is too small
There is a complete description of the PCRE2 native API in the pcre2api(3) page and a description of the POSIX API in the pcre2posix(3) page.
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This manual page is taken from the PCRE library, which is distributed under the BSD license. |