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Code Editor : pcre_jit_exec.html

<html>
<head>
<title>pcre_jit_exec specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre_jit_exec man page</h1>

Return to the <a href="index.html">PCRE index page</a>.


This page is part of the PCRE HTML documentation. It was generated automatically
from the original man page. If there is any nonsense in it, please consult the
man page, in case the conversion went wrong.
 
 
SYNOPSIS
 

#include &#60;pcre.h&#62;


int pcre_jit_exec(const pcre *code, const pcre_extra *extra,
const char *subject, int length, int startoffset,
int options, int *ovector, int ovecsize,
pcre_jit_stack *jstack);


int pcre16_jit_exec(const pcre16 *code, const pcre16_extra *extra,
PCRE_SPTR16 subject, int length, int startoffset,
int options, int *ovector, int ovecsize,
pcre_jit_stack *jstack);


int pcre32_jit_exec(const pcre32 *code, const pcre32_extra *extra,
PCRE_SPTR32 subject, int length, int startoffset,
int options, int *ovector, int ovecsize,
pcre_jit_stack *jstack);

 
DESCRIPTION
 

This function matches a compiled regular expression that has been successfully
studied with one of the JIT options against a given subject string, using a
matching algorithm that is similar to Perl's. It is a "fast path" interface to
JIT, and it bypasses some of the sanity checks that pcre_exec() applies.
It returns offsets to captured substrings. Its arguments are:
<pre>
 code Points to the compiled pattern
 extra Points to an associated pcre[16|32]_extra structure,
 or is NULL
 subject Points to the subject string
 length Length of the subject string, in bytes
 startoffset Offset in bytes in the subject at which to
 start matching
 options Option bits
 ovector Points to a vector of ints for result offsets
 ovecsize Number of elements in the vector (a multiple of 3)
 jstack Pointer to a JIT stack
</pre>
The allowed options are:
<pre>
 PCRE_NOTBOL Subject string is not the beginning of a line
 PCRE_NOTEOL Subject string is not the end of a line
 PCRE_NOTEMPTY An empty string is not a valid match
 PCRE_NOTEMPTY_ATSTART An empty string at the start of the subject
 is not a valid match
 PCRE_NO_UTF16_CHECK Do not check the subject for UTF-16
 validity (only relevant if PCRE_UTF16
 was set at compile time)
 PCRE_NO_UTF32_CHECK Do not check the subject for UTF-32
 validity (only relevant if PCRE_UTF32
 was set at compile time)
 PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
 validity (only relevant if PCRE_UTF8
 was set at compile time)
 PCRE_PARTIAL ) Return PCRE_ERROR_PARTIAL for a partial
 PCRE_PARTIAL_SOFT ) match if no full matches are found
 PCRE_PARTIAL_HARD Return PCRE_ERROR_PARTIAL for a partial match
 if that is found before a full match
</pre>
However, the PCRE_NO_UTF[8|16|32]_CHECK options have no effect, as this check
is never applied. For details of partial matching, see the
<a href="pcrepartial.html">pcrepartial</a>
page. A pcre_extra structure contains the following fields:
<pre>
 flags Bits indicating which fields are set
 study_data Opaque data from pcre[16|32]_study()
 match_limit Limit on internal resource use
 match_limit_recursion Limit on internal recursion depth
 callout_data Opaque data passed back to callouts
 tables Points to character tables or is NULL
 mark For passing back a *MARK pointer
 executable_jit Opaque data from JIT compilation
</pre>
The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA,
PCRE_EXTRA_TABLES, PCRE_EXTRA_MARK and PCRE_EXTRA_EXECUTABLE_JIT.


There is a complete description of the PCRE native API in the
<a href="pcreapi.html">pcreapi</a>
page and a description of the JIT API in the
<a href="pcrejit.html">pcrejit</a>
page.

Return to the <a href="index.html">PCRE index page</a>.

${this.title}

Code Editor : pcre_jit_exec.html