.TH PCRE_COPY_SUBSTRING 3 .SH NAME PCRE - Perl-compatible regular expressions .SH SYNOPSIS .rs .sp .B #include .PP .SM .B int pcre_copy_substring(const char *\fIsubject\fP, int *\fIovector\fP, .ti +5n .B int \fIstringcount\fP, int \fIstringnumber\fP, char *\fIbuffer\fP, .ti +5n .B int \fIbuffersize\fP); . .SH DESCRIPTION .rs .sp This is a convenience function for extracting a captured substring into a given buffer. The arguments are: .sp \fIsubject\fP Subject that has been successfully matched \fIovector\fP Offset vector that \fBpcre_exec()\fP used \fIstringcount\fP Value returned by \fBpcre_exec()\fP \fIstringnumber\fP Number of the required substring \fIbuffer\fP Buffer to receive the string \fIbuffersize\fP Size of buffer .sp The yield is the length of the string, PCRE_ERROR_NOMEMORY if the buffer was too small, or PCRE_ERROR_NOSUBSTRING if the string number is invalid. .P There is a complete description of the PCRE native API in the .\" HREF \fBpcreapi\fP .\" page and a description of the POSIX API in the .\" HREF \fBpcreposix\fP .\" page.