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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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Qt Toolkit - xml/tagreader/tagreader.cpp example file
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<h1 align=center>A tiny SAX2 parser</h1><br clear="all">
This example presents a small <a href="xml-sax.html">SAX2</a>
reader that outputs the names of all elements in an
XML document on the command line. The element names are
indented corresponding to their nesting
This example is thoroughly explained in a
<a href="xml-sax-walkthrough.html">walkthrough</a>.
<hr>
Header file: <pre>/*
$Id: qt/examples/xml/tagreader/structureparser.h 2.3.2 edited 2001-01-26 $
*/
#include <<a href="qxml-h.html">qxml.h</a>>
class QString;
class StructureParser : public QXmlDefaultHandler
{
public:
bool startDocument();
bool startElement( const QString&, const QString&, const QString& ,
const QXmlAttributes& );
bool endElement( const QString&, const QString&, const QString& );
private:
<a href="qstring.html">QString</a> indent;
};
</pre>
<hr>
Implementation: <pre>/*
$Id: qt/examples/xml/tagreader/structureparser.cpp 2.3.2 edited 2001-01-26 $
*/
#include "structureparser.h"
#include <iostream.h>
#include <<a href="qstring-h.html">qstring.h</a>>
bool <a name="163"></a>StructureParser::startDocument()
{
indent = "";
return TRUE;
}
bool <a name="164"></a>StructureParser::startElement( const QString&, const QString&,
const QString& qName,
const QXmlAttributes& )
{
cout << indent << qName << endl;
indent += " ";
return TRUE;
}
bool <a name="165"></a>StructureParser::endElement( const QString&, const QString&, const QString& )
{
indent.remove( 0, 4 );
return TRUE;
}
</pre>
<hr>
Main:
<pre>/*
$Id: qt/examples/xml/tagreader/tagreader.cpp 2.3.2 edited 2001-01-26 $
*/
#include "structureparser.h"
#include <<a name="qfile.h"></a><a href="qfile-h.html">qfile.h</a>>
#include <<a name="qxml.h"></a><a href="qxml-h.html">qxml.h</a>>
int main( int argc, char **argv )
{
for ( int i=1; i < argc; i++ ) {
StructureParser handler;
<a name="QFile"></a><a href="qfile.html">QFile</a> xmlFile( argv[i] );
<a name="QXmlInputSource"></a><a href="qxmlinputsource.html">QXmlInputSource</a> source( xmlFile );
<a name="QXmlSimpleReader"></a><a href="qxmlsimplereader.html">QXmlSimpleReader</a> reader;
reader.<a name="setContentHandler"></a><a href="qxmlsimplereader.html#3ce23b">setContentHandler</a>( &handler );
reader.<a name="parse"></a><a href="qxmlsimplereader.html#2d6b2a">parse</a>( source );
}
return 0;
}
</pre>
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<td>Copyright 2001 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align="right"><div align="right">Qt version 2.3.2</div>
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