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revision 579 by ph10, Wed Nov 24 17:39:25 2010 UTC revision 654 by ph10, Tue Aug 2 11:00:40 2011 UTC
# Line 93  the <b>pcre_exec()</b> and the <b>pcre_d Line 93  the <b>pcre_exec()</b> and the <b>pcre_d
93  only argument to the callout function is a pointer to a <b>pcre_callout</b>  only argument to the callout function is a pointer to a <b>pcre_callout</b>
94  block. This structure contains the following fields:  block. This structure contains the following fields:
95  <pre>  <pre>
96    int          <i>version</i>;    int         <i>version</i>;
97    int          <i>callout_number</i>;    int         <i>callout_number</i>;
98    int         *<i>offset_vector</i>;    int        *<i>offset_vector</i>;
99    const char  *<i>subject</i>;    const char *<i>subject</i>;
100    int          <i>subject_length</i>;    int         <i>subject_length</i>;
101    int          <i>start_match</i>;    int         <i>start_match</i>;
102    int          <i>current_position</i>;    int         <i>current_position</i>;
103    int          <i>capture_top</i>;    int         <i>capture_top</i>;
104    int          <i>capture_last</i>;    int         <i>capture_last</i>;
105    void        *<i>callout_data</i>;    void       *<i>callout_data</i>;
106    int          <i>pattern_position</i>;    int         <i>pattern_position</i>;
107    int          <i>next_item_length</i>;    int         <i>next_item_length</i>;
108      const unsigned char *<i>mark</i>;
109  </pre>  </pre>
110  The <i>version</i> field is an integer containing the version number of the  The <i>version</i> field is an integer containing the version number of the
111  block format. The initial version was 0; the current version is 1. The version  block format. The initial version was 0; the current version is 2. The version
112  number will change again in future if additional fields are added, but the  number will change again in future if additional fields are added, but the
113  intention is never to remove any of the existing fields.  intention is never to remove any of the existing fields.
114  </P>  </P>
# Line 180  The <i>pattern_position</i> and <i>next_ Line 181  The <i>pattern_position</i> and <i>next_
181  help in distinguishing between different automatic callouts, which all have the  help in distinguishing between different automatic callouts, which all have the
182  same callout number. However, they are set for all callouts.  same callout number. However, they are set for all callouts.
183  </P>  </P>
184    <P>
185    The <i>mark</i> field is present from version 2 of the <i>pcre_callout</i>
186    structure. In callouts from <b>pcre_exec()</b> it contains a pointer to the
187    zero-terminated name of the most recently passed (*MARK) item in the match, or
188    NULL if there are no (*MARK)s in the current matching path. In callouts from
189    <b>pcre_dfa_exec()</b> this field always contains NULL.
190    </P>
191  <br><a name="SEC4" href="#TOC1">RETURN VALUES</a><br>  <br><a name="SEC4" href="#TOC1">RETURN VALUES</a><br>
192  <P>  <P>
193  The external callout function returns an integer to PCRE. If the value is zero,  The external callout function returns an integer to PCRE. If the value is zero,
# Line 206  Cambridge CB2 3QH, England. Line 214  Cambridge CB2 3QH, England.
214  </P>  </P>
215  <br><a name="SEC6" href="#TOC1">REVISION</a><br>  <br><a name="SEC6" href="#TOC1">REVISION</a><br>
216  <P>  <P>
217  Last updated: 21 November 2010  Last updated: 31 July 2011
218  <br>  <br>
219  Copyright &copy; 1997-2010 University of Cambridge.  Copyright &copy; 1997-2011 University of Cambridge.
220  <br>  <br>
221  <p>  <p>
222  Return to the <a href="index.html">PCRE index page</a>.  Return to the <a href="index.html">PCRE index page</a>.
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