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178 lines
9.5 KiB
178 lines
9.5 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/xml/qxml.cpp:1651 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQXmlLexicalHandler Class</title>
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQXmlLexicalHandler Class Reference<br><small>[<a href="xml.html">XML module</a>]</small></h1>
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<p>The TQXmlLexicalHandler class provides an interface to
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report the lexical content of XML data.
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<a href="#details">More...</a>
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<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when TQt is built with thread support.</p>
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<p><tt>#include <<a href="qxml-h.html">qxml.h</a>></tt>
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<p>Inherited by <a href="qxmldefaulthandler.html">TQXmlDefaultHandler</a>.
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<p><a href="qxmllexicalhandler-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>virtual bool <a href="#startDTD"><b>startDTD</b></a> ( const TQString & name, const TQString & publicId, const TQString & systemId ) = 0</li>
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<li class=fn>virtual bool <a href="#endDTD"><b>endDTD</b></a> () = 0</li>
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<li class=fn>virtual bool <a href="#startEntity"><b>startEntity</b></a> ( const TQString & name ) = 0</li>
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<li class=fn>virtual bool <a href="#endEntity"><b>endEntity</b></a> ( const TQString & name ) = 0</li>
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<li class=fn>virtual bool <a href="#startCDATA"><b>startCDATA</b></a> () = 0</li>
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<li class=fn>virtual bool <a href="#endCDATA"><b>endCDATA</b></a> () = 0</li>
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<li class=fn>virtual bool <a href="#comment"><b>comment</b></a> ( const TQString & ch ) = 0</li>
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<li class=fn>virtual TQString <a href="#errorString"><b>errorString</b></a> () = 0</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQXmlLexicalHandler class provides an interface to
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report the lexical content of XML data.
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<p>
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<p> The events in the lexical handler apply to the entire document,
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not just to the document element, and all lexical handler events
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appear between the content handler's startDocument and endDocument
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events.
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<p> You can set the lexical handler with
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<a href="qxmlreader.html#setLexicalHandler">TQXmlReader::setLexicalHandler</a>().
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<p> This interface's design is based on the the SAX2 extension
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LexicalHandler.
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<p> The interface provides the <a href="#startDTD">startDTD</a>(), <a href="#endDTD">endDTD</a>(), <a href="#startEntity">startEntity</a>(),
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<a href="#endEntity">endEntity</a>(), <a href="#startCDATA">startCDATA</a>(), <a href="#endCDATA">endCDATA</a>() and <a href="#comment">comment</a>() functions.
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<p> See also the <a href="xml.html#sax2Intro">Introduction to SAX2</a>.
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<p> <p>See also <a href="qxmldtdhandler.html">TQXmlDTDHandler</a>, <a href="qxmldeclhandler.html">TQXmlDeclHandler</a>, <a href="qxmlcontenthandler.html">TQXmlContentHandler</a>, <a href="qxmlentityresolver.html">TQXmlEntityResolver</a>, <a href="qxmlerrorhandler.html">TQXmlErrorHandler</a>, and <a href="xml-tools.html">XML</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn>bool <a name="comment"></a>TQXmlLexicalHandler::comment ( const <a href="qstring.html">TQString</a> & ch )<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report an XML comment anywhere
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in the document. It reports the text of the comment in <em>ch</em>.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<h3 class=fn>bool <a name="endCDATA"></a>TQXmlLexicalHandler::endCDATA ()<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the end of a CDATA
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section.
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<p> If this function returns FALSE the reader stops parsing and reports
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an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
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message.
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<p> <p>See also <a href="#startCDATA">startCDATA</a>() and <a href="qxmlcontenthandler.html#characters">TQXmlContentHandler::characters</a>().
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<h3 class=fn>bool <a name="endDTD"></a>TQXmlLexicalHandler::endDTD ()<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the end of a DTD
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declaration, if any.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<p> <p>See also <a href="#startDTD">startDTD</a>().
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<h3 class=fn>bool <a name="endEntity"></a>TQXmlLexicalHandler::endEntity ( const <a href="qstring.html">TQString</a> & name )<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the end of an entity
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called <em>name</em>.
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<p> For every <a href="#startEntity">startEntity</a>() call, there is a corresponding <a href="#endEntity">endEntity</a>()
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call. The calls to startEntity() and endEntity() are properly
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nested.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<p> <p>See also <a href="#startEntity">startEntity</a>(), <a href="qxmlcontenthandler.html#skippedEntity">TQXmlContentHandler::skippedEntity</a>(), and <a href="qxmlsimplereader.html#setFeature">TQXmlSimpleReader::setFeature</a>().
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<h3 class=fn><a href="qstring.html">TQString</a> <a name="errorString"></a>TQXmlLexicalHandler::errorString ()<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to get an error string if any of
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the handler functions returns FALSE.
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<h3 class=fn>bool <a name="startCDATA"></a>TQXmlLexicalHandler::startCDATA ()<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the start of a CDATA
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section. The content of the CDATA section is reported through the
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<a href="qxmlcontenthandler.html#characters">TQXmlContentHandler::characters</a>() function. This function is
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intended only to report the boundary.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<p> <p>See also <a href="#endCDATA">endCDATA</a>().
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<h3 class=fn>bool <a name="startDTD"></a>TQXmlLexicalHandler::startDTD ( const <a href="qstring.html">TQString</a> & name, const <a href="qstring.html">TQString</a> & publicId, const <a href="qstring.html">TQString</a> & systemId )<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the start of a DTD
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declaration, if any. It reports the name of the document type in
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<em>name</em>, the public identifier in <em>publicId</em> and the system
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identifier in <em>systemId</em>.
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<p> If the public identifier is missing, <em>publicId</em> is set to
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<a href="qstring.html#TQString-null">TQString::null</a>. If the system identifier is missing, <em>systemId</em> is
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set to TQString::null. Note that it is not valid XML to have a
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public identifier but no system identifier; in such cases a parse
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error will occur.
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<p> All declarations reported through <a href="qxmldtdhandler.html">TQXmlDTDHandler</a> or
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<a href="qxmldeclhandler.html">TQXmlDeclHandler</a> appear between the <a href="#startDTD">startDTD</a>() and <a href="#endDTD">endDTD</a>() calls.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<p> <p>See also <a href="#endDTD">endDTD</a>().
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<h3 class=fn>bool <a name="startEntity"></a>TQXmlLexicalHandler::startEntity ( const <a href="qstring.html">TQString</a> & name )<tt> [pure virtual]</tt>
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</h3>
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<p> The reader calls this function to report the start of an entity
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called <em>name</em>.
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<p> Note that if the entity is unknown, the reader reports it through
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<a href="qxmlcontenthandler.html#skippedEntity">TQXmlContentHandler::skippedEntity</a>() and not through this
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function.
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<p> If this function returns FALSE the reader stops parsing and
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reports an error. The reader uses the function <a href="#errorString">errorString</a>() to
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get the error message.
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<p> <p>See also <a href="#endEntity">endEntity</a>() and <a href="qxmlsimplereader.html#setFeature">TQXmlSimpleReader::setFeature</a>().
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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