forked from Mirrors/freeswitch
43 lines
1.1 KiB
Groff
43 lines
1.1 KiB
Groff
|
.TH PCRE_STUDY 3
|
||
|
|
.SH NAME
|
||
|
|
PCRE - Perl-compatible regular expressions
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.rs
|
||
|
|
.sp
|
||
|
|
.B #include <pcre.h>
|
||
|
|
.PP
|
||
|
|
.SM
|
||
|
|
.B pcre_extra *pcre_study(const pcre *\fIcode\fP, int \fIoptions\fP,
|
||
|
|
.ti +5n
|
||
|
|
.B const char **\fIerrptr\fP);
|
||
|
|
.
|
||
|
|
.SH DESCRIPTION
|
||
|
|
.rs
|
||
|
|
.sp
|
||
|
|
This function studies a compiled pattern, to see if additional information can
|
||
|
|
be extracted that might speed up matching. Its arguments are:
|
||
|
|
.sp
|
||
|
|
\fIcode\fP A compiled regular expression
|
||
|
|
\fIoptions\fP Options for \fBpcre_study()\fP
|
||
|
|
\fIerrptr\fP Where to put an error message
|
||
|
|
.sp
|
||
|
|
If the function succeeds, it returns a value that can be passed to
|
||
|
|
\fBpcre_exec()\fP via its \fIextra\fP argument.
|
||
|
|
.P
|
||
|
|
If the function returns NULL, either it could not find any additional
|
||
|
|
information, or there was an error. You can tell the difference by looking at
|
||
|
|
the error value. It is NULL in first case.
|
||
|
|
.P
|
||
|
|
There are currently no options defined; the value of the second argument should
|
||
|
|
always be zero.
|
||
|
|
.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.
|