Annotation of embedaddon/pcre/doc/html/pcre_dfa_exec.html, revision 1.1.1.1
1.1 misho 1: <html>
2: <head>
3: <title>pcre_dfa_exec specification</title>
4: </head>
5: <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
6: <h1>pcre_dfa_exec man page</h1>
7: <p>
8: Return to the <a href="index.html">PCRE index page</a>.
9: </p>
10: <p>
11: This page is part of the PCRE HTML documentation. It was generated automatically
12: from the original man page. If there is any nonsense in it, please consult the
13: man page, in case the conversion went wrong.
14: <br>
15: <br><b>
16: SYNOPSIS
17: </b><br>
18: <P>
19: <b>#include <pcre.h></b>
20: </P>
21: <P>
22: <b>int pcre_dfa_exec(const pcre *<i>code</i>, const pcre_extra *<i>extra</i>,</b>
23: <b>const char *<i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
24: <b>int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>,</b>
25: <b>int *<i>workspace</i>, int <i>wscount</i>);</b>
26: </P>
27: <br><b>
28: DESCRIPTION
29: </b><br>
30: <P>
31: This function matches a compiled regular expression against a given subject
32: string, using an alternative matching algorithm that scans the subject string
33: just once (<i>not</i> Perl-compatible). Note that the main, Perl-compatible,
34: matching function is <b>pcre_exec()</b>. The arguments for this function are:
35: <pre>
36: <i>code</i> Points to the compiled pattern
37: <i>extra</i> Points to an associated <b>pcre_extra</b> structure,
38: or is NULL
39: <i>subject</i> Points to the subject string
40: <i>length</i> Length of the subject string, in bytes
41: <i>startoffset</i> Offset in bytes in the subject at which to
42: start matching
43: <i>options</i> Option bits
44: <i>ovector</i> Points to a vector of ints for result offsets
45: <i>ovecsize</i> Number of elements in the vector
46: <i>workspace</i> Points to a vector of ints used as working space
47: <i>wscount</i> Number of elements in the vector
48: </pre>
49: The options are:
50: <pre>
51: PCRE_ANCHORED Match only at the first position
52: PCRE_BSR_ANYCRLF \R matches only CR, LF, or CRLF
53: PCRE_BSR_UNICODE \R matches all Unicode line endings
54: PCRE_NEWLINE_ANY Recognize any Unicode newline sequence
55: PCRE_NEWLINE_ANYCRLF Recognize CR, LF, & CRLF as newline sequences
56: PCRE_NEWLINE_CR Recognize CR as the only newline sequence
57: PCRE_NEWLINE_CRLF Recognize CRLF as the only newline sequence
58: PCRE_NEWLINE_LF Recognize LF as the only newline sequence
59: PCRE_NOTBOL Subject is not the beginning of a line
60: PCRE_NOTEOL Subject is not the end of a line
61: PCRE_NOTEMPTY An empty string is not a valid match
62: PCRE_NOTEMPTY_ATSTART An empty string at the start of the subject
63: is not a valid match
64: PCRE_NO_START_OPTIMIZE Do not do "start-match" optimizations
65: PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
66: validity (only relevant if PCRE_UTF8
67: was set at compile time)
68: PCRE_PARTIAL ) Return PCRE_ERROR_PARTIAL for a partial
69: PCRE_PARTIAL_SOFT ) match if no full matches are found
70: PCRE_PARTIAL_HARD Return PCRE_ERROR_PARTIAL for a partial match
71: even if there is a full match as well
72: PCRE_DFA_SHORTEST Return only the shortest match
73: PCRE_DFA_RESTART Restart after a partial match
74: </pre>
75: There are restrictions on what may appear in a pattern when using this matching
76: function. Details are given in the
77: <a href="pcrematching.html"><b>pcrematching</b></a>
78: documentation. For details of partial matching, see the
79: <a href="pcrepartial.html"><b>pcrepartial</b></a>
80: page.
81: </P>
82: <P>
83: A <b>pcre_extra</b> structure contains the following fields:
84: <pre>
85: <i>flags</i> Bits indicating which fields are set
86: <i>study_data</i> Opaque data from <b>pcre_study()</b>
87: <i>match_limit</i> Limit on internal resource use
88: <i>match_limit_recursion</i> Limit on internal recursion depth
89: <i>callout_data</i> Opaque data passed back to callouts
90: <i>tables</i> Points to character tables or is NULL
91: <i>mark</i> For passing back a *MARK pointer
92: <i>executable_jit</i> Opaque data from JIT compilation
93: </pre>
94: The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
95: PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA,
96: PCRE_EXTRA_TABLES, PCRE_EXTRA_MARK and PCRE_EXTRA_EXECUTABLE_JIT. For this
97: matching function, the <i>match_limit</i> and <i>match_limit_recursion</i> fields
98: are not used, and must not be set. The PCRE_EXTRA_EXECUTABLE_JIT flag and
99: the corresponding variable are ignored.
100: </P>
101: <P>
102: There is a complete description of the PCRE native API in the
103: <a href="pcreapi.html"><b>pcreapi</b></a>
104: page and a description of the POSIX API in the
105: <a href="pcreposix.html"><b>pcreposix</b></a>
106: page.
107: <p>
108: Return to the <a href="index.html">PCRE index page</a>.
109: </p>
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to pcre_dfa_exec.html CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / pcre / doc / html