| .TH PCRE2_SUBSTRING_COPY_BYNUMBER 3 "13 December 2014" "PCRE2 10.00" |
| .SH NAME |
| PCRE2 - Perl-compatible regular expressions (revised API) |
| .SH SYNOPSIS |
| .rs |
| .sp |
| .B #include <pcre2.h> |
| .PP |
| .nf |
| .B int pcre2_substring_copy_bynumber(pcre2_match_data *\fImatch_data\fP, |
| .B " uint32_t \fInumber\fP, PCRE2_UCHAR *\fIbuffer\fP," |
| .B " PCRE2_SIZE *\fIbufflen\fP);" |
| .fi |
| . |
| .SH DESCRIPTION |
| .rs |
| .sp |
| This is a convenience function for extracting a captured substring into a given |
| buffer. The arguments are: |
| .sp |
| \fImatch_data\fP The match data block for the match |
| \fInumber\fP Number of the required substring |
| \fIbuffer\fP Buffer to receive the string |
| \fIbufflen\fP Length of buffer |
| .sp |
| The \fIbufflen\fP 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: |
| .sp |
| 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 |
| .sp |
| .P |
| There is a complete description of the PCRE2 native API in the |
| .\" HREF |
| \fBpcre2api\fP |
| .\" |
| page and a description of the POSIX API in the |
| .\" HREF |
| \fBpcre2posix\fP |
| .\" |
| page. |
