Annotation of embedaddon/pcre/doc/html/pcre_dfa_exec.html, revision 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>
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