Edit File: libxml2-xmlregexp.html
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>xmlregexp: regular expressions handling</title> <meta name="generator" content="Libxml2 devhelp stylesheet"> <link rel="start" href="index.html" title="libxml2 Reference Manual"> <link rel="up" href="general.html" title="API"> <link rel="stylesheet" href="style.css" type="text/css"> <link rel="chapter" href="general.html" title="API"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"> <td><a accesskey="p" href="libxml2-xmlreader.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td> <td><a accesskey="u" href="general.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td> <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td> <td><a accesskey="n" href="libxml2-xmlsave.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td> <th width="100%" align="center">libxml2 Reference Manual</th> </tr></table> <h2><span class="refentrytitle">xmlregexp</span></h2> <p>xmlregexp - regular expressions handling</p> <p>basic API for libxml regular expressions handling used for XML Schemas and validation. </p> <p>Author(s): Daniel Veillard </p> <div class="refsynopsisdiv"> <h2>Synopsis</h2> <pre class="synopsis">typedef struct _xmlExpCtxt <a href="#xmlExpCtxt">xmlExpCtxt</a>; typedef <a href="libxml2-xmlregexp.html#xmlExpCtxt">xmlExpCtxt</a> * <a href="#xmlExpCtxtPtr">xmlExpCtxtPtr</a>; typedef struct _xmlExpNode <a href="#xmlExpNode">xmlExpNode</a>; typedef <a href="libxml2-xmlregexp.html#xmlExpNode">xmlExpNode</a> * <a href="#xmlExpNodePtr">xmlExpNodePtr</a>; typedef enum <a href="#xmlExpNodeType">xmlExpNodeType</a>; typedef struct _xmlRegExecCtxt <a href="#xmlRegExecCtxt">xmlRegExecCtxt</a>; typedef <a href="libxml2-xmlregexp.html#xmlRegExecCtxt">xmlRegExecCtxt</a> * <a href="#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a>; typedef struct _xmlRegexp <a href="#xmlRegexp">xmlRegexp</a>; typedef <a href="libxml2-xmlregexp.html#xmlRegexp">xmlRegexp</a> * <a href="#xmlRegexpPtr">xmlRegexpPtr</a>; int <a href="#xmlExpCtxtNbCons">xmlExpCtxtNbCons</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt); int <a href="#xmlExpCtxtNbNodes">xmlExpCtxtNbNodes</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt); void <a href="#xmlExpDump">xmlExpDump</a> (<a href="libxml2-tree.html#xmlBufferPtr">xmlBufferPtr</a> buf, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpExpDerive">xmlExpExpDerive</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub); void <a href="#xmlExpFree">xmlExpFree</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp); void <a href="#xmlExpFreeCtxt">xmlExpFreeCtxt</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt); int <a href="#xmlExpGetLanguage">xmlExpGetLanguage</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** langList, <br> int len); int <a href="#xmlExpGetStart">xmlExpGetStart</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** tokList, <br> int len); int <a href="#xmlExpIsNillable">xmlExpIsNillable</a> (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp); int <a href="#xmlExpMaxToken">xmlExpMaxToken</a> (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpNewAtom">xmlExpNewAtom</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> int len); <a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> <a href="#xmlExpNewCtxt">xmlExpNewCtxt</a> (int maxNodes, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpNewOr">xmlExpNewOr</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpNewRange">xmlExpNewRange</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> subset, <br> int min, <br> int max); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpNewSeq">xmlExpNewSeq</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpParse">xmlExpParse</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> const char * expr); void <a href="#xmlExpRef">xmlExpRef</a> (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp); <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> <a href="#xmlExpStringDerive">xmlExpStringDerive</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> int len); int <a href="#xmlExpSubsume">xmlExpSubsume</a> (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub); typedef void <a href="#xmlRegExecCallbacks">xmlRegExecCallbacks</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * token, <br> void * transdata, <br> void * inputdata); int <a href="#xmlRegExecErrInfo">xmlRegExecErrInfo</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** string, <br> int * nbval, <br> int * nbneg, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br> int * terminal); int <a href="#xmlRegExecNextValues">xmlRegExecNextValues</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> int * nbval, <br> int * nbneg, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br> int * terminal); int <a href="#xmlRegExecPushString">xmlRegExecPushString</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br> void * data); int <a href="#xmlRegExecPushString2">xmlRegExecPushString2</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value2, <br> void * data); void <a href="#xmlRegFreeExecCtxt">xmlRegFreeExecCtxt</a> (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec); void <a href="#xmlRegFreeRegexp">xmlRegFreeRegexp</a> (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp); <a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> <a href="#xmlRegNewExecCtxt">xmlRegNewExecCtxt</a> (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br> <a href="libxml2-xmlregexp.html#xmlRegExecCallbacks">xmlRegExecCallbacks</a> callback, <br> void * data); <a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> <a href="#xmlRegexpCompile">xmlRegexpCompile</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * regexp); int <a href="#xmlRegexpExec">xmlRegexpExec</a> (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * content); int <a href="#xmlRegexpIsDeterminist">xmlRegexpIsDeterminist</a> (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp); void <a href="#xmlRegexpPrint">xmlRegexpPrint</a> (FILE * output, <br> <a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp); </pre> </div> <div class="refsect1" lang="en"><h2>Description</h2></div> <div class="refsect1" lang="en"> <h2>Details</h2> <div class="refsect2" lang="en"> <div class="refsect2" lang="en"> <h3> <a name="xmlExpCtxt">Structure </a>xmlExpCtxt</h3> <pre class="programlisting">struct _xmlExpCtxt { The content of this structure is not made public by the API. } xmlExpCtxt; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpCtxtPtr">Typedef </a>xmlExpCtxtPtr</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpCtxt">xmlExpCtxt</a> * xmlExpCtxtPtr; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNode">Structure </a>xmlExpNode</h3> <pre class="programlisting">struct _xmlExpNode { The content of this structure is not made public by the API. } xmlExpNode; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNodePtr">Typedef </a>xmlExpNodePtr</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNode">xmlExpNode</a> * xmlExpNodePtr; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNodeType">Enum </a>xmlExpNodeType</h3> <pre class="programlisting">enum <a href="#xmlExpNodeType">xmlExpNodeType</a> { <a name="XML_EXP_EMPTY">XML_EXP_EMPTY</a> = 0 <a name="XML_EXP_FORBID">XML_EXP_FORBID</a> = 1 <a name="XML_EXP_ATOM">XML_EXP_ATOM</a> = 2 <a name="XML_EXP_SEQ">XML_EXP_SEQ</a> = 3 <a name="XML_EXP_OR">XML_EXP_OR</a> = 4 <a name="XML_EXP_COUNT">XML_EXP_COUNT</a> = 5 }; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecCtxt">Structure </a>xmlRegExecCtxt</h3> <pre class="programlisting">struct _xmlRegExecCtxt { The content of this structure is not made public by the API. } xmlRegExecCtxt; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecCtxtPtr">Typedef </a>xmlRegExecCtxtPtr</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegExecCtxt">xmlRegExecCtxt</a> * xmlRegExecCtxtPtr; </pre> <p>A libxml progressive regular expression evaluation context</p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexp">Structure </a>xmlRegexp</h3> <pre class="programlisting">struct _xmlRegexp { The content of this structure is not made public by the API. } xmlRegexp; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexpPtr">Typedef </a>xmlRegexpPtr</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegexp">xmlRegexp</a> * xmlRegexpPtr; </pre> <p>A libxml regular expression, they can actually be far more complex thank the POSIX regex expressions.</p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecCallbacks"></a>Function type xmlRegExecCallbacks</h3> <pre class="programlisting">void xmlRegExecCallbacks (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * token, <br> void * transdata, <br> void * inputdata)<br> </pre> <p>Callback function when doing a transition in the automata</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>the regular expression context</td> </tr> <tr> <td><span class="term"><i><tt>token</tt></i>:</span></td> <td>the current token string</td> </tr> <tr> <td><span class="term"><i><tt>transdata</tt></i>:</span></td> <td>transition data</td> </tr> <tr> <td><span class="term"><i><tt>inputdata</tt></i>:</span></td> <td>input data</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="emptyExp">Variable </a>emptyExp</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> emptyExp; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="forbiddenExp">Variable </a>forbiddenExp</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> forbiddenExp; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpCtxtNbCons"></a>xmlExpCtxtNbCons ()</h3> <pre class="programlisting">int xmlExpCtxtNbCons (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br> </pre> <p>Debugging facility provides the number of allocated nodes over lifetime</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>an expression context</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of nodes ever allocated or -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpCtxtNbNodes"></a>xmlExpCtxtNbNodes ()</h3> <pre class="programlisting">int xmlExpCtxtNbNodes (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br> </pre> <p>Debugging facility provides the number of allocated nodes at a that point</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>an expression context</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of nodes in use or -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpDump"></a>xmlExpDump ()</h3> <pre class="programlisting">void xmlExpDump (<a href="libxml2-tree.html#xmlBufferPtr">xmlBufferPtr</a> buf, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr)<br> </pre> <p>Serialize the expression as compiled to the buffer</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>buf</tt></i>:</span></td> <td>a buffer to receive the output</td> </tr> <tr> <td><span class="term"><i><tt>expr</tt></i>:</span></td> <td>the compiled expression</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpExpDerive"></a>xmlExpExpDerive ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpExpDerive (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub)<br> </pre> <p>Evaluates the expression resulting from @exp consuming a sub expression @sub Based on algebraic derivation and sometimes direct Brzozowski derivation it usually takes less than linear time and can handle expressions generating infinite languages.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expressions context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the englobing expression</td> </tr> <tr> <td><span class="term"><i><tt>sub</tt></i>:</span></td> <td>the subexpression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the resulting expression or NULL in case of internal error, the result must be freed</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpFree"></a>xmlExpFree ()</h3> <pre class="programlisting">void xmlExpFree (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br> </pre> <p>Dereference the expression</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpFreeCtxt"></a>xmlExpFreeCtxt ()</h3> <pre class="programlisting">void xmlExpFreeCtxt (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br> </pre> <p>Free an expression context</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody><tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>an expression context</td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpGetLanguage"></a>xmlExpGetLanguage ()</h3> <pre class="programlisting">int xmlExpGetLanguage (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** langList, <br> int len)<br> </pre> <p>Find all the strings used in @exp and store them in @list</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr> <tr> <td><span class="term"><i><tt>langList</tt></i>:</span></td> <td>where to store the tokens</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the allocated length of @list</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of unique strings found, -1 in case of errors and -2 if there is more than @len strings</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpGetStart"></a>xmlExpGetStart ()</h3> <pre class="programlisting">int xmlExpGetStart (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** tokList, <br> int len)<br> </pre> <p>Find all the strings that appears at the start of the languages accepted by @exp and store them in @list. E.g. for (a, b) | c it will return the list [a, c]</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr> <tr> <td><span class="term"><i><tt>tokList</tt></i>:</span></td> <td>where to store the tokens</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the allocated length of @list</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of unique strings found, -1 in case of errors and -2 if there is more than @len strings</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpIsNillable"></a>xmlExpIsNillable ()</h3> <pre class="programlisting">int xmlExpIsNillable (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br> </pre> <p>Finds if the expression is nillable, i.e. if it accepts the empty sequence</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if nillable, 0 if not and -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpMaxToken"></a>xmlExpMaxToken ()</h3> <pre class="programlisting">int xmlExpMaxToken (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr)<br> </pre> <p>Indicate the maximum number of input a expression can accept</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>expr</tt></i>:</span></td> <td>a compiled expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the maximum length or -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNewAtom"></a>xmlExpNewAtom ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpNewAtom (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> int len)<br> </pre> <p>Get the atom associated to this name from that context</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the atom name</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the atom name length in byte (or -1);</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the node or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNewCtxt"></a>xmlExpNewCtxt ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> xmlExpNewCtxt (int maxNodes, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict)<br> </pre> <p>Creates a new context for manipulating expressions</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>maxNodes</tt></i>:</span></td> <td>the maximum number of nodes</td> </tr> <tr> <td><span class="term"><i><tt>dict</tt></i>:</span></td> <td>optional dictionary to use internally</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the context or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNewOr"></a>xmlExpNewOr ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpNewOr (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right)<br> </pre> <p>Get the atom associated to the choice @left | @right Note that @left and @right are consumed in the operation, to keep an handle on them use xmlExpRef() and use xmlExpFree() to release them, this is true even in case of failure (unless ctxt == NULL).</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>left</tt></i>:</span></td> <td>left expression</td> </tr> <tr> <td><span class="term"><i><tt>right</tt></i>:</span></td> <td>right expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the node or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNewRange"></a>xmlExpNewRange ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpNewRange (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> subset, <br> int min, <br> int max)<br> </pre> <p>Get the atom associated to the range (@subset){@min, @max} Note that @subset is consumed in the operation, to keep an handle on it use xmlExpRef() and use xmlExpFree() to release it, this is true even in case of failure (unless ctxt == NULL).</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>subset</tt></i>:</span></td> <td>the expression to be repeated</td> </tr> <tr> <td><span class="term"><i><tt>min</tt></i>:</span></td> <td>the lower bound for the repetition</td> </tr> <tr> <td><span class="term"><i><tt>max</tt></i>:</span></td> <td>the upper bound for the repetition, -1 means infinite</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the node or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpNewSeq"></a>xmlExpNewSeq ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpNewSeq (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right)<br> </pre> <p>Get the atom associated to the sequence @left , @right Note that @left and @right are consumed in the operation, to keep an handle on them use xmlExpRef() and use xmlExpFree() to release them, this is true even in case of failure (unless ctxt == NULL).</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>left</tt></i>:</span></td> <td>left expression</td> </tr> <tr> <td><span class="term"><i><tt>right</tt></i>:</span></td> <td>right expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the node or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpParse"></a>xmlExpParse ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpParse (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> const char * expr)<br> </pre> <p>Minimal parser for regexps, it understand the following constructs - string terminals - choice operator | - sequence operator , - subexpressions (...) - usual cardinality operators + * and ? - finite sequences { min, max } - infinite sequences { min, * } There is minimal checkings made especially no checking on strings values</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expressions context</td> </tr> <tr> <td><span class="term"><i><tt>expr</tt></i>:</span></td> <td>the 0 terminated string</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new expression or NULL in case of failure</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpRef"></a>xmlExpRef ()</h3> <pre class="programlisting">void xmlExpRef (<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br> </pre> <p>Increase the <a href="libxml2-SAX.html#reference">reference</a> count of the expression</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody><tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpStringDerive"></a>xmlExpStringDerive ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> xmlExpStringDerive (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> int len)<br> </pre> <p>Do one step of Brzozowski derivation of the expression @exp with respect to the input string</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expression context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the expression</td> </tr> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the string</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the string len in bytes if available</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the resulting expression or NULL in case of internal error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlExpSubsume"></a>xmlExpSubsume ()</h3> <pre class="programlisting">int xmlExpSubsume (<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br> <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub)<br> </pre> <p>Check whether @exp accepts all the languages accepted by @sub the input being a subexpression.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>ctxt</tt></i>:</span></td> <td>the expressions context</td> </tr> <tr> <td><span class="term"><i><tt>exp</tt></i>:</span></td> <td>the englobing expression</td> </tr> <tr> <td><span class="term"><i><tt>sub</tt></i>:</span></td> <td>the subexpression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if true 0 if false and -1 in case of failure.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecErrInfo"></a>xmlRegExecErrInfo ()</h3> <pre class="programlisting">int xmlRegExecErrInfo (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** string, <br> int * nbval, <br> int * nbneg, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br> int * terminal)<br> </pre> <p>Extract error information from the regexp execution, the parameter @string will be updated with the value pushed and not accepted, the parameter @values must point to an array of @nbval string pointers on return nbval will contain the number of possible strings in that state and the @values array will be updated with them. The string values</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>a regexp execution context generating an error</td> </tr> <tr> <td><span class="term"><i><tt>string</tt></i>:</span></td> <td>return value for the error string</td> </tr> <tr> <td><span class="term"><i><tt>nbval</tt></i>:</span></td> <td>pointer to the number of accepted values IN/OUT</td> </tr> <tr> <td><span class="term"><i><tt>nbneg</tt></i>:</span></td> <td>return number of negative transitions</td> </tr> <tr> <td><span class="term"><i><tt>values</tt></i>:</span></td> <td>pointer to the array of acceptable values</td> </tr> <tr> <td><span class="term"><i><tt>terminal</tt></i>:</span></td> <td>return value if this was a terminal state</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>will be freed with the @exec context and don't need to be deallocated. Returns: 0 in case of success or -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecNextValues"></a>xmlRegExecNextValues ()</h3> <pre class="programlisting">int xmlRegExecNextValues (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> int * nbval, <br> int * nbneg, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br> int * terminal)<br> </pre> <p>Extract information from the regexp execution, the parameter @values must point to an array of @nbval string pointers on return nbval will contain the number of possible strings in that state and the @values array will be updated with them. The string values</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>a regexp execution context</td> </tr> <tr> <td><span class="term"><i><tt>nbval</tt></i>:</span></td> <td>pointer to the number of accepted values IN/OUT</td> </tr> <tr> <td><span class="term"><i><tt>nbneg</tt></i>:</span></td> <td>return number of negative transitions</td> </tr> <tr> <td><span class="term"><i><tt>values</tt></i>:</span></td> <td>pointer to the array of acceptable values</td> </tr> <tr> <td><span class="term"><i><tt>terminal</tt></i>:</span></td> <td>return value if this was a terminal state</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>will be freed with the @exec context and don't need to be deallocated. Returns: 0 in case of success or -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecPushString"></a>xmlRegExecPushString ()</h3> <pre class="programlisting">int xmlRegExecPushString (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br> void * data)<br> </pre> <p>Push one input token in the execution context</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>a regexp execution context or NULL to indicate the end</td> </tr> <tr> <td><span class="term"><i><tt>value</tt></i>:</span></td> <td>a string token input</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>data associated to the token to reuse in callbacks</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if the regexp reached a final state, 0 if non-final, and a negative value in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegExecPushString2"></a>xmlRegExecPushString2 ()</h3> <pre class="programlisting">int xmlRegExecPushString2 (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value2, <br> void * data)<br> </pre> <p>Push one input token in the execution context</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>a regexp execution context or NULL to indicate the end</td> </tr> <tr> <td><span class="term"><i><tt>value</tt></i>:</span></td> <td>the first string token input</td> </tr> <tr> <td><span class="term"><i><tt>value2</tt></i>:</span></td> <td>the second string token input</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>data associated to the token to reuse in callbacks</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if the regexp reached a final state, 0 if non-final, and a negative value in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegFreeExecCtxt"></a>xmlRegFreeExecCtxt ()</h3> <pre class="programlisting">void xmlRegFreeExecCtxt (<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec)<br> </pre> <p>Free the structures associated to a regular expression evaluation context.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody><tr> <td><span class="term"><i><tt>exec</tt></i>:</span></td> <td>a regular expression evaluation context</td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegFreeRegexp"></a>xmlRegFreeRegexp ()</h3> <pre class="programlisting">void xmlRegFreeRegexp (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp)<br> </pre> <p>Free a regexp</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody><tr> <td><span class="term"><i><tt>regexp</tt></i>:</span></td> <td>the regexp</td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegNewExecCtxt"></a>xmlRegNewExecCtxt ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> xmlRegNewExecCtxt (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br> <a href="libxml2-xmlregexp.html#xmlRegExecCallbacks">xmlRegExecCallbacks</a> callback, <br> void * data)<br> </pre> <p>Build a context used for progressive evaluation of a regexp.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>comp</tt></i>:</span></td> <td>a precompiled regular expression</td> </tr> <tr> <td><span class="term"><i><tt>callback</tt></i>:</span></td> <td>a callback function used for handling progresses in the automata matching phase</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>the context data associated to the callback in this context</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the new context</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexpCompile"></a>xmlRegexpCompile ()</h3> <pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> xmlRegexpCompile (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * regexp)<br> </pre> <p>Parses a regular expression conforming to XML Schemas Part 2 Datatype Appendix F and builds an automata suitable for testing strings against that regular expression</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>regexp</tt></i>:</span></td> <td>a regular expression string</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the compiled expression or NULL in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexpExec"></a>xmlRegexpExec ()</h3> <pre class="programlisting">int xmlRegexpExec (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * content)<br> </pre> <p>Check if the regular expression generates the value</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>comp</tt></i>:</span></td> <td>the compiled regular expression</td> </tr> <tr> <td><span class="term"><i><tt>content</tt></i>:</span></td> <td>the value to check against the regular expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if it matches, 0 if not and a negative value in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexpIsDeterminist"></a>xmlRegexpIsDeterminist ()</h3> <pre class="programlisting">int xmlRegexpIsDeterminist (<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp)<br> </pre> <p>Check if the regular expression is determinist</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>comp</tt></i>:</span></td> <td>the compiled regular expression</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if it yes, 0 if not and a negative value in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlRegexpPrint"></a>xmlRegexpPrint ()</h3> <pre class="programlisting">void xmlRegexpPrint (FILE * output, <br> <a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp)<br> </pre> <p>Print the content of the compiled regular expression</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>output</tt></i>:</span></td> <td>the file for the output debug</td> </tr> <tr> <td><span class="term"><i><tt>regexp</tt></i>:</span></td> <td>the compiled regexp</td> </tr> </tbody> </table></div> </div> <hr> </div> </div> </body> </html>