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//opt/pcre/share/man/man3/pcre_get_substring.3
.TH PCRE_GET_SUBSTRING 3 "24 June 2012" "PCRE 8.30" .SH NAME PCRE - Perl-compatible regular expressions .SH SYNOPSIS .rs .sp .B #include <pcre.h> .PP .nf .B int pcre_get_substring(const char *\fIsubject\fP, int *\fIovector\fP, .B " int \fIstringcount\fP, int \fIstringnumber\fP," .B " const char **\fIstringptr\fP);" .sp .B int pcre16_get_substring(PCRE_SPTR16 \fIsubject\fP, int *\fIovector\fP, .B " int \fIstringcount\fP, int \fIstringnumber\fP," .B " PCRE_SPTR16 *\fIstringptr\fP);" .sp .B int pcre32_get_substring(PCRE_SPTR32 \fIsubject\fP, int *\fIovector\fP, .B " int \fIstringcount\fP, int \fIstringnumber\fP," .B " PCRE_SPTR32 *\fIstringptr\fP);" .fi . .SH DESCRIPTION .rs .sp This is a convenience function for extracting a captured substring. The arguments are: .sp \fIsubject\fP Subject that has been successfully matched \fIovector\fP Offset vector that \fBpcre[16|32]_exec()\fP used \fIstringcount\fP Value returned by \fBpcre[16|32]_exec()\fP \fIstringnumber\fP Number of the required substring \fIstringptr\fP Where to put the string pointer .sp The memory in which the substring is placed is obtained by calling \fBpcre[16|32]_malloc()\fP. The convenience function \fBpcre[16|32]_free_substring()\fP can be used to free it when it is no longer needed. The yield of the function is the length of the substring, PCRE_ERROR_NOMEMORY if sufficient memory could not be obtained, 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.
