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Rename

<html>
<head>
<title>pcre2_match specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre2_match man page</h1>

Return to the <a href="index.html">PCRE2 index page</a>.


This page is part of the PCRE2 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;pcre2.h&#62;


int pcre2_match(const pcre2_code *code, PCRE2_SPTR subject,
 PCRE2_SIZE length, PCRE2_SIZE startoffset,
 uint32_t options, pcre2_match_data *match_data,
 pcre2_match_context *mcontext);

 
DESCRIPTION
 

This function matches a compiled regular expression against a given subject
string, using a matching algorithm that is similar to Perl's. It returns
offsets to what it has matched and to captured substrings via the
match_data block, which can be processed by functions with names that
start with pcre2_get_ovector_...() or pcre2_substring_...(). The
return from pcre2_match() is one more than the highest numbered capturing
pair that has been set (for example, 1 if there are no captures), zero if the
vector of offsets is too small, or a negative error code for no match and other
errors. The function arguments are:
<pre>
 code Points to the compiled pattern
 subject Points to the subject string
 length Length of the subject string
 startoffset Offset in the subject at which to start matching
 options Option bits
 match_data Points to a match data block, for results
 mcontext Points to a match context, or is NULL
</pre>
A match context is needed only if you want to:
<pre>
 Set up a callout function
 Set a matching offset limit
 Change the heap memory limit
 Change the backtracking match limit
 Change the backtracking depth limit
 Set custom memory management specifically for the match
</pre>
The length and startoffset values are code
units, not characters. The length may be given as PCRE2_ZERO_TERMINATE for a
subject that is terminated by a binary zero code unit. The options are:
<pre>
 PCRE2_ANCHORED Match only at the first position
 PCRE2_ENDANCHORED Pattern can match only at end of subject
 PCRE2_NOTBOL Subject string is not the beginning of a line
 PCRE2_NOTEOL Subject string is not the end of a line
 PCRE2_NOTEMPTY An empty string is not a valid match
 PCRE2_NOTEMPTY_ATSTART An empty string at the start of the subject is not a valid match
 PCRE2_NO_JIT Do not use JIT matching
 PCRE2_NO_UTF_CHECK Do not check the subject for UTF validity (only relevant if PCRE2_UTF
 was set at compile time)
 PCRE2_PARTIAL_HARD Return PCRE2_ERROR_PARTIAL for a partial match even if there is a full match
 PCRE2_PARTIAL_SOFT Return PCRE2_ERROR_PARTIAL for a partial match if no full matches are found
</pre>
For details of partial matching, see the
<a href="pcre2partial.html">pcre2partial</a>
page. There is a complete description of the PCRE2 native API in the
<a href="pcre2api.html">pcre2api</a>
page and a description of the POSIX API in the
<a href="pcre2posix.html">pcre2posix</a>
page.

Return to the <a href="index.html">PCRE2 index page</a>.