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revision 92 by nigel, Sat Feb 24 21:41:34 2007 UTC revision 93 by nigel, Sat Feb 24 21:41:42 2007 UTC
# Line 23  man page, in case the conversion went wr Line 23  man page, in case the conversion went wr
23  <li><a name="TOC8" href="#SEC8">OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION</a>  <li><a name="TOC8" href="#SEC8">OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION</a>
24  <li><a name="TOC9" href="#SEC9">RESTARTING AFTER A PARTIAL MATCH</a>  <li><a name="TOC9" href="#SEC9">RESTARTING AFTER A PARTIAL MATCH</a>
25  <li><a name="TOC10" href="#SEC10">CALLOUTS</a>  <li><a name="TOC10" href="#SEC10">CALLOUTS</a>
26  <li><a name="TOC11" href="#SEC11">SAVING AND RELOADING COMPILED PATTERNS</a>  <li><a name="TOC11" href="#SEC11">NON-PRINTING CHARACTERS</a>
27  <li><a name="TOC12" href="#SEC12">AUTHOR</a>  <li><a name="TOC12" href="#SEC12">SAVING AND RELOADING COMPILED PATTERNS</a>
28    <li><a name="TOC13" href="#SEC13">SEE ALSO</a>
29    <li><a name="TOC14" href="#SEC14">AUTHOR</a>
30  </ul>  </ul>
31  <br><a name="SEC1" href="#TOC1">SYNOPSIS</a><br>  <br><a name="SEC1" href="#TOC1">SYNOPSIS</a><br>
32  <P>  <P>
# Line 43  documentation. Line 45  documentation.
45  </P>  </P>
46  <br><a name="SEC2" href="#TOC1">OPTIONS</a><br>  <br><a name="SEC2" href="#TOC1">OPTIONS</a><br>
47  <P>  <P>
48    <b>-b</b>
49    Behave as if each regex has the <b>/B</b> (show bytecode) modifier; the internal
50    form is output after compilation.
51    </P>
52    <P>
53  <b>-C</b>  <b>-C</b>
54  Output the version number of the PCRE library, and all available information  Output the version number of the PCRE library, and all available information
55  about the optional features that are included, and then exit.  about the optional features that are included, and then exit.
# Line 50  about the optional features that are inc Line 57  about the optional features that are inc
57  <P>  <P>
58  <b>-d</b>  <b>-d</b>
59  Behave as if each regex has the <b>/D</b> (debug) modifier; the internal  Behave as if each regex has the <b>/D</b> (debug) modifier; the internal
60  form is output after compilation.  form and information about the compiled pattern is output after compilation;
61    <b>-d</b> is equivalent to <b>-b -i</b>.
62  </P>  </P>
63  <P>  <P>
64  <b>-dfa</b>  <b>-dfa</b>
# Line 59  alternative matching function, pcre_d Line 67  alternative matching function, pcre_d
67  standard <b>pcre_exec()</b> function (more detail is given below).  standard <b>pcre_exec()</b> function (more detail is given below).
68  </P>  </P>
69  <P>  <P>
70    <b>-help</b>
71    Output a brief summary these options and then exit.
72    </P>
73    <P>
74  <b>-i</b>  <b>-i</b>
75  Behave as if each regex has the <b>/I</b> modifier; information about the  Behave as if each regex has the <b>/I</b> modifier; information about the
76  compiled pattern is given after compilation.  compiled pattern is given after compilation.
# Line 72  with earlier versions of pcretest, -s Line 84  with earlier versions of pcretest, -s
84  <P>  <P>
85  <b>-o</b> <i>osize</i>  <b>-o</b> <i>osize</i>
86  Set the number of elements in the output vector that is used when calling  Set the number of elements in the output vector that is used when calling
87  <b>pcre_exec()</b> to be <i>osize</i>. The default value is 45, which is enough  <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b> to be <i>osize</i>. The default value
88  for 14 capturing subexpressions. The vector size can be changed for individual  is 45, which is enough for 14 capturing subexpressions for <b>pcre_exec()</b> or
89  matching calls by including \O in the data line (see below).  22 different matches for <b>pcre_dfa_exec()</b>. The vector size can be
90    changed for individual matching calls by including \O in the data line (see
91    below).
92  </P>  </P>
93  <P>  <P>
94  <b>-p</b>  <b>-p</b>
# Line 96  megabytes. Line 110  megabytes.
110  Run each compile, study, and match many times with a timer, and output  Run each compile, study, and match many times with a timer, and output
111  resulting time per compile or match (in milliseconds). Do not set <b>-m</b> with  resulting time per compile or match (in milliseconds). Do not set <b>-m</b> with
112  <b>-t</b>, because you will then get the size output a zillion times, and the  <b>-t</b>, because you will then get the size output a zillion times, and the
113  timing will be distorted.  timing will be distorted. You can control the number of iterations that are
114    used for timing by following <b>-t</b> with a number (as a separate item on the
115    command line). For example, "-t 1000" would iterate 1000 times. The default is
116    to iterate 500000 times.
117    </P>
118    <P>
119    <b>-tm</b>
120    This is like <b>-t</b> except that it times only the matching phase, not the
121    compile or study phases.
122  </P>  </P>
123  <br><a name="SEC3" href="#TOC1">DESCRIPTION</a><br>  <br><a name="SEC3" href="#TOC1">DESCRIPTION</a><br>
124  <P>  <P>
# Line 114  lines to be matched against the pattern. Line 136  lines to be matched against the pattern.
136  <P>  <P>
137  Each data line is matched separately and independently. If you want to do  Each data line is matched separately and independently. If you want to do
138  multi-line matches, you have to use the \n escape sequence (or \r or \r\n,  multi-line matches, you have to use the \n escape sequence (or \r or \r\n,
139  depending on the newline setting) in a single line of input to encode the  etc., depending on the newline setting) in a single line of input to encode the
140  newline characters. There is no limit on the length of data lines; the input  newline sequences. There is no limit on the length of data lines; the input
141  buffer is automatically extended if it is too small.  buffer is automatically extended if it is too small.
142  </P>  </P>
143  <P>  <P>
# Line 179  not correspond to anything in Perl: Line 201  not correspond to anything in Perl:
201    <b>/&#60;cr&#62;</b>    PCRE_NEWLINE_CR    <b>/&#60;cr&#62;</b>    PCRE_NEWLINE_CR
202    <b>/&#60;lf&#62;</b>    PCRE_NEWLINE_LF    <b>/&#60;lf&#62;</b>    PCRE_NEWLINE_LF
203    <b>/&#60;crlf&#62;</b>  PCRE_NEWLINE_CRLF    <b>/&#60;crlf&#62;</b>  PCRE_NEWLINE_CRLF
204      <b>/&#60;any&#62;</b>   PCRE_NEWLINE_ANY
205    </pre>
206    Those specifying line ending sequencess are literal strings as shown. This
207    example sets multiline matching with CRLF as the line ending sequence:
208    <pre>
209      /^abc/m&#60;crlf&#62;
210  </pre>  </pre>
211  Those specifying line endings are literal strings as shown. Details of the  Details of the meanings of these PCRE options are given in the
 meanings of these PCRE options are given in the  
212  <a href="pcreapi.html"><b>pcreapi</b></a>  <a href="pcreapi.html"><b>pcreapi</b></a>
213  documentation.  documentation.
214  </P>  </P>
# Line 220  the subject string. This is useful for t Line 247  the subject string. This is useful for t
247  multiple copies of the same substring.  multiple copies of the same substring.
248  </P>  </P>
249  <P>  <P>
250    The <b>/B</b> modifier is a debugging feature. It requests that <b>pcretest</b>
251    output a representation of the compiled byte code after compilation.
252    </P>
253    <P>
254  The <b>/L</b> modifier must be followed directly by the name of a locale, for  The <b>/L</b> modifier must be followed directly by the name of a locale, for
255  example,  example,
256  <pre>  <pre>
# Line 238  so on). It does this by calling pcre_ Line 269  so on). It does this by calling pcre_
269  pattern. If the pattern is studied, the results of that are also output.  pattern. If the pattern is studied, the results of that are also output.
270  </P>  </P>
271  <P>  <P>
272  The <b>/D</b> modifier is a PCRE debugging feature, which also assumes <b>/I</b>.  The <b>/D</b> modifier is a PCRE debugging feature, and is equivalent to
273  It causes the internal form of compiled regular expressions to be output after  <b>/BI</b>, that is, both the \fP/B\fP and the <b>/I</b> modifiers.
 compilation. If the pattern was studied, the information returned is also  
 output.  
274  </P>  </P>
275  <P>  <P>
276  The <b>/F</b> modifier causes <b>pcretest</b> to flip the byte order of the  The <b>/F</b> modifier causes <b>pcretest</b> to flip the byte order of the
# Line 289  complicated features of PCRE. If you are Line 318  complicated features of PCRE. If you are
318  expressions, you probably don't need any of these. The following escapes are  expressions, you probably don't need any of these. The following escapes are
319  recognized:  recognized:
320  <pre>  <pre>
321    \a         alarm (= BEL)    \a         alarm (BEL, \x07)
322    \b         backspace    \b         backspace (\x08)
323    \e         escape    \e         escape (\x27)
324    \f         formfeed    \f         formfeed (\x0c)
325    \n         newline    \n         newline (\x0a)
326    \qdd       set the PCRE_MATCH_LIMIT limit to dd (any number of digits)    \qdd       set the PCRE_MATCH_LIMIT limit to dd (any number of digits)
327    \r         carriage return    \r         carriage return (\x0d)
328    \t         tab    \t         tab (\x09)
329    \v         vertical tab    \v         vertical tab (\x0b)
330    \nnn       octal character (up to 3 octal digits)    \nnn       octal character (up to 3 octal digits)
331    \xhh       hexadecimal character (up to 2 hex digits)    \xhh       hexadecimal character (up to 2 hex digits)
332    \x{hh...}  hexadecimal character, any number of digits in UTF-8 mode    \x{hh...}  hexadecimal character, any number of digits in UTF-8 mode
# Line 331  recognized: Line 360  recognized:
360    \&#60;cr&#62;      pass the PCRE_NEWLINE_CR option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>    \&#60;cr&#62;      pass the PCRE_NEWLINE_CR option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>
361    \&#60;lf&#62;      pass the PCRE_NEWLINE_LF option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>    \&#60;lf&#62;      pass the PCRE_NEWLINE_LF option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>
362    \&#60;crlf&#62;    pass the PCRE_NEWLINE_CRLF option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>    \&#60;crlf&#62;    pass the PCRE_NEWLINE_CRLF option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>
363      \&#60;any&#62;     pass the PCRE_NEWLINE_ANY option to <b>pcre_exec()</b> or <b>pcre_dfa_exec()</b>
364  </pre>  </pre>
365  The escapes that specify line endings are literal strings, exactly as shown.  The escapes that specify line ending sequences are literal strings, exactly as
366  A backslash followed by anything else just escapes the anything else. If the  shown. No more than one newline setting should be present in any data line.
367  very last character is a backslash, it is ignored. This gives a way of passing  </P>
368  an empty line as data, since a real empty line terminates the data input.  <P>
369    A backslash followed by anything else just escapes the anything else. If
370    the very last character is a backslash, it is ignored. This gives a way of
371    passing an empty line as data, since a real empty line terminates the data
372    input.
373  </P>  </P>
374  <P>  <P>
375  If \M is present, <b>pcretest</b> calls <b>pcre_exec()</b> several times, with  If \M is present, <b>pcretest</b> calls <b>pcre_exec()</b> several times, with
# Line 398  respectively, and otherwise the PCRE neg Line 432  respectively, and otherwise the PCRE neg
432  of an interactive <b>pcretest</b> run.  of an interactive <b>pcretest</b> run.
433  <pre>  <pre>
434    $ pcretest    $ pcretest
435    PCRE version 5.00 07-Sep-2004    PCRE version 7.0 30-Nov-2006
436    
437      re&#62; /^abc(\d+)/      re&#62; /^abc(\d+)/
438    data&#62; abc123    data&#62; abc123
# Line 409  of an interactive pcretest run. Line 443  of an interactive pcretest run.
443  </pre>  </pre>
444  If the strings contain any non-printing characters, they are output as \0x  If the strings contain any non-printing characters, they are output as \0x
445  escapes, or as \x{...} escapes if the <b>/8</b> modifier was present on the  escapes, or as \x{...} escapes if the <b>/8</b> modifier was present on the
446  pattern. If the pattern has the <b>/+</b> modifier, the output for substring 0  pattern. See below for the definition of non-printing characters. If the
447  is followed by the the rest of the subject string, identified by "0+" like  pattern has the <b>/+</b> modifier, the output for substring 0 is followed by
448  this:  the the rest of the subject string, identified by "0+" like this:
449  <pre>  <pre>
450      re&#62; /cat/+      re&#62; /cat/+
451    data&#62; cataract    data&#62; cataract
# Line 441  length (that is, the return from the ext Line 475  length (that is, the return from the ext
475  parentheses after each string for <b>\C</b> and <b>\G</b>.  parentheses after each string for <b>\C</b> and <b>\G</b>.
476  </P>  </P>
477  <P>  <P>
478  Note that while patterns can be continued over several lines (a plain "&#62;"  Note that whereas patterns can be continued over several lines (a plain "&#62;"
479  prompt is used for continuations), data lines may not. However newlines can be  prompt is used for continuations), data lines may not. However newlines can be
480  included in data by means of the \n escape (or \r or \r\n for those newline  included in data by means of the \n escape (or \r, \r\n, etc., depending on
481  settings).  the newline sequence setting).
482  </P>  </P>
483  <br><a name="SEC8" href="#TOC1">OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION</a><br>  <br><a name="SEC8" href="#TOC1">OUTPUT FROM THE ALTERNATIVE MATCHING FUNCTION</a><br>
484  <P>  <P>
# Line 463  the subject where there is at least one Line 497  the subject where there is at least one
497  longest matching string is always given first (and numbered zero).  longest matching string is always given first (and numbered zero).
498  </P>  </P>
499  <P>  <P>
500  If \fB/g\P is present on the pattern, the search for further matches resumes  If <b>/g</b> is present on the pattern, the search for further matches resumes
501  at the end of the longest match. For example:  at the end of the longest match. For example:
502  <pre>  <pre>
503      re&#62; /(tang|tangerine|tan)/g      re&#62; /(tang|tangerine|tan)/g
# Line 537  the Line 571  the
571  <a href="pcrecallout.html"><b>pcrecallout</b></a>  <a href="pcrecallout.html"><b>pcrecallout</b></a>
572  documentation.  documentation.
573  </P>  </P>
574  <br><a name="SEC11" href="#TOC1">SAVING AND RELOADING COMPILED PATTERNS</a><br>  <br><a name="SEC11" href="#TOC1">NON-PRINTING CHARACTERS</a><br>
575    <P>
576    When <b>pcretest</b> is outputting text in the compiled version of a pattern,
577    bytes other than 32-126 are always treated as non-printing characters are are
578    therefore shown as hex escapes.
579    </P>
580    <P>
581    When <b>pcretest</b> is outputting text that is a matched part of a subject
582    string, it behaves in the same way, unless a different locale has been set for
583    the pattern (using the <b>/L</b> modifier). In this case, the <b>isprint()</b>
584    function to distinguish printing and non-printing characters.
585    </P>
586    <br><a name="SEC12" href="#TOC1">SAVING AND RELOADING COMPILED PATTERNS</a><br>
587  <P>  <P>
588  The facilities described in this section are not available when the POSIX  The facilities described in this section are not available when the POSIX
589  inteface to PCRE is being used, that is, when the <b>/P</b> pattern modifier is  inteface to PCRE is being used, that is, when the <b>/P</b> pattern modifier is
# Line 599  string using a reloaded pattern is likel Line 645  string using a reloaded pattern is likel
645  Finally, if you attempt to load a file that is not in the correct format, the  Finally, if you attempt to load a file that is not in the correct format, the
646  result is undefined.  result is undefined.
647  </P>  </P>
648  <br><a name="SEC12" href="#TOC1">AUTHOR</a><br>  <br><a name="SEC13" href="#TOC1">SEE ALSO</a><br>
649    <P>
650    <b>pcre</b>(3), <b>pcreapi</b>(3), <b>pcrecallout</b>(3), <b>pcrematching</b>(3),
651    <b>pcrepartial</b>(d), \fPpcrepattern\fP(3), <b>pcreprecompile</b>(3).
652    </P>
653    <br><a name="SEC14" href="#TOC1">AUTHOR</a><br>
654  <P>  <P>
655  Philip Hazel  Philip Hazel
656  <br>  <br>
657  University Computing Service,  University Computing Service,
658  <br>  <br>
659  Cambridge CB2 3QG, England.  Cambridge CB2 3QH, England.
660  </P>  </P>
661  <P>  <P>
662  Last updated: 29 June 2006  Last updated: 30 November 2006
663  <br>  <br>
664  Copyright &copy; 1997-2006 University of Cambridge.  Copyright &copy; 1997-2006 University of Cambridge.
665  <p>  <p>

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