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-<html>
-<head>
-<title>pcre_dfa_exec specification</title>
-</head>
-<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
-<h1>pcre_dfa_exec man page</h1>
-<p>
-Return to the <a href="index.html">PCRE index page</a>.
-</p>
-<p>
-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.
-<br>
-<br><b>
-SYNOPSIS
-</b><br>
-<P>
-<b>#include <pcre.h></b>
-</P>
-<P>
-<b>int pcre_dfa_exec(const pcre *<i>code</i>, const pcre_extra *<i>extra</i>,</b>
-<b>const char *<i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
-<b>int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>,</b>
-<b>int *<i>workspace</i>, int <i>wscount</i>);</b>
-</P>
-<br><b>
-DESCRIPTION
-</b><br>
-<P>
-This function matches a compiled regular expression against a given subject
-string, using an alternative matching algorithm that scans the subject string
-just once (<i>not</i> Perl-compatible). Note that the main, Perl-compatible,
-matching function is <b>pcre_exec()</b>. The arguments for this function are:
-<pre>
- <i>code</i> Points to the compiled pattern
- <i>extra</i> Points to an associated <b>pcre_extra</b> structure,
- or is NULL
- <i>subject</i> Points to the subject string
- <i>length</i> Length of the subject string, in bytes
- <i>startoffset</i> Offset in bytes in the subject at which to
- start matching
- <i>options</i> Option bits
- <i>ovector</i> Points to a vector of ints for result offsets
- <i>ovecsize</i> Number of elements in the vector
- <i>workspace</i> Points to a vector of ints used as working space
- <i>wscount</i> Number of elements in the vector
-</pre>
-The options are:
-<pre>
- PCRE_ANCHORED Match only at the first position
- PCRE_BSR_ANYCRLF \R matches only CR, LF, or CRLF
- PCRE_BSR_UNICODE \R matches all Unicode line endings
- PCRE_NEWLINE_ANY Recognize any Unicode newline sequence
- PCRE_NEWLINE_ANYCRLF Recognize CR, LF, & CRLF as newline sequences
- PCRE_NEWLINE_CR Recognize CR as the only newline sequence
- PCRE_NEWLINE_CRLF Recognize CRLF as the only newline sequence
- PCRE_NEWLINE_LF Recognize LF as the only newline sequence
- PCRE_NOTBOL Subject is not the beginning of a line
- PCRE_NOTEOL Subject 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_START_OPTIMIZE Do not do "start-match" optimizations
- 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
- even if there is a full match as well
- PCRE_DFA_SHORTEST Return only the shortest match
- PCRE_DFA_RESTART Restart after a partial match
-</pre>
-There are restrictions on what may appear in a pattern when using this matching
-function. Details are given in the
-<a href="pcrematching.html"><b>pcrematching</b></a>
-documentation. For details of partial matching, see the
-<a href="pcrepartial.html"><b>pcrepartial</b></a>
-page.
-</P>
-<P>
-A <b>pcre_extra</b> structure contains the following fields:
-<pre>
- <i>flags</i> Bits indicating which fields are set
- <i>study_data</i> Opaque data from <b>pcre_study()</b>
- <i>match_limit</i> Limit on internal resource use
- <i>match_limit_recursion</i> Limit on internal recursion depth
- <i>callout_data</i> Opaque data passed back to callouts
- <i>tables</i> Points to character tables or is NULL
-</pre>
-The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
-PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA, and
-PCRE_EXTRA_TABLES. For this matching function, the <i>match_limit</i> and
-<i>match_limit_recursion</i> fields are not used, and must not be set.
-</P>
-<P>
-There is a complete description of the PCRE native API in the
-<a href="pcreapi.html"><b>pcreapi</b></a>
-page and a description of the POSIX API in the
-<a href="pcreposix.html"><b>pcreposix</b></a>
-page.
-<p>
-Return to the <a href="index.html">PCRE index page</a>.
-</p>
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