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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>
Qt Toolkit - xml/tagreader-with-features/tagreader.cpp example file
</title><style type="text/css"><!--
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<table width="100%">
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</a><td valign=top><div align=right><img src="dochead.png" width="472" height="27"><br>
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<h1 align=center>Demonstration of SAX2 features</h1><br clear="all">
This example presents a small <a href="xml-sax.html">SAX2</a>
reader that outputs the qualified names and the
respective namespace URIs of all elements and attributes in an
XML file. Additionally the tree structure of the document is displayed.
In three listviews the program shows the different output of the reader
depending on how the SAX2 <a href="xml-sax.html#namespaces">features</a>
http://xml.org/sax/features/namespaces and
http://xml.org/sax/features/namespace-prefixes are set.
<hr>
Header file: <pre>/*
$Id: qt/examples/xml/tagreader-with-features/structureparser.h 2.3.2 edited 2001-01-26 $
*/
#include <<a href="qxml-h.html">qxml.h</a>>
#include <<a href="qstack-h.html">qstack.h</a>>
class QListView;
class QListViewItem;
class QString;
class StructureParser: public QXmlDefaultHandler
{
public:
StructureParser( <a href="qlistview.html">QListView</a> * );
bool startDocument();
bool startElement( const QString&, const QString&, const QString& ,
const QXmlAttributes& );
bool endElement( const QString&, const QString&, const QString& );
private:
<a href="qstack.html">QStack</a><<a href="qlistviewitem.html">QListViewItem</a>> stack;
<a href="qlistview.html">QListView</a> * table;
};
</pre>
<hr>
Implementation: <pre>/*
$Id: qt/examples/xml/tagreader-with-features/structureparser.cpp 2.3.2 edited 2001-01-26 $
*/
#include "structureparser.h"
#include <<a href="qstring-h.html">qstring.h</a>>
#include <<a href="qlistview-h.html">qlistview.h</a>>
StructureParser::StructureParser( <a href="qlistview.html">QListView</a> * t )
: <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a>()
{
table = t;
table->setSorting( -1 ); // no sorting
table->addColumn( "Qualified name" );
table->addColumn( "Namespace" );
}
bool <a name="338"></a>StructureParser::startDocument()
{
return TRUE;
}
bool <a name="339"></a>StructureParser::startElement( const QString& namespaceURI, const QString& ,
const QString& qName,
const QXmlAttributes& attributes)
{
<a href="qlistviewitem.html">QListViewItem</a> * element;
if ( ! stack.isEmpty() ){
element = new <a href="qlistviewitem.html">QListViewItem</a>( stack.top(), qName, namespaceURI );
} else {
element = new <a href="qlistviewitem.html">QListViewItem</a>( table, qName, namespaceURI );
}
stack.push( element );
element-><a href="qlistviewitem.html#1c5a28">setOpen</a>( TRUE );
if ( attributes.length() > 0 ){
<a href="qlistviewitem.html">QListViewItem</a> * attribute;
for ( int i = 0 ; i < attributes.length(); i++ ){
attribute = new <a href="qlistviewitem.html">QListViewItem</a>( element,
attributes.qName(i),
attributes.uri(i) );
}
}
return TRUE;
}
bool <a name="340"></a>StructureParser::endElement( const QString&, const QString&, const QString& )
{
stack.pop();
return TRUE;
}
</pre>
<hr>
Main:
<pre>/*
$Id: qt/examples/xml/tagreader-with-features/tagreader.cpp 2.3.2 edited 2001-06-12 $
*/
#include "structureparser.h"
#include <<a name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>>
#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>>
#include <<a name="qlistview.h"></a><a href="qlistview-h.html">qlistview.h</a>>
#include <<a name="qgrid.h"></a><a href="qgrid-h.html">qgrid.h</a>>
#include <<a name="qmainwindow.h"></a><a href="qmainwindow-h.html">qmainwindow.h</a>>
#include <<a name="qlabel.h"></a><a href="qlabel-h.html">qlabel.h</a>>
int main( int argc, char **argv )
{
<a name="QApplication"></a><a href="qapplication.html">QApplication</a> app( argc, argv );
<a name="QFile"></a><a href="qfile.html">QFile</a> xmlFile( argc == 2 ? argv[1] : "fnord.xml" );
<a name="QXmlInputSource"></a><a href="qxmlinputsource.html">QXmlInputSource</a> source( xmlFile );
<a name="QXmlSimpleReader"></a><a href="qxmlsimplereader.html">QXmlSimpleReader</a> reader;
<a name="QGrid"></a><a href="qgrid.html">QGrid</a> * container = new <a href="qgrid.html">QGrid</a>( 3 );
<a name="QListView"></a><a href="qlistview.html">QListView</a> * nameSpace = new <a href="qlistview.html">QListView</a>( container, "table_namespace" );
StructureParser * handlerNamespace = new StructureParser( nameSpace );
reader.<a name="setContentHandler"></a><a href="qxmlsimplereader.html#3ce23b">setContentHandler</a>( handlerNamespace );
reader.<a name="parse"></a><a href="qxmlsimplereader.html#2d6b2a">parse</a>( source );
<a href="qlistview.html">QListView</a> * namespacePrefix = new <a href="qlistview.html">QListView</a>( container, "table_namespace_prefix" );
StructureParser * handlerNamespacePrefix = new StructureParser( namespacePrefix );
reader.<a href="qxmlsimplereader.html#3ce23b">setContentHandler</a>( handlerNamespacePrefix );
reader.<a name="setFeature"></a><a href="qxmlsimplereader.html#1f7766">setFeature</a>( "http://xml.org/sax/features/namespaces", TRUE );
reader.<a href="qxmlsimplereader.html#1f7766">setFeature</a>( "http://xml.org/sax/features/namespace-prefixes", TRUE );
reader.<a href="qxmlsimplereader.html#2d6b2a">parse</a>( source );
<a href="qlistview.html">QListView</a> * prefix = new <a href="qlistview.html">QListView</a>( container, "table_prefix");
StructureParser * handlerPrefix = new StructureParser( prefix );
reader.<a href="qxmlsimplereader.html#3ce23b">setContentHandler</a>( handlerPrefix );
reader.<a href="qxmlsimplereader.html#1f7766">setFeature</a>( "http://xml.org/sax/features/namespaces", FALSE );
reader.<a href="qxmlsimplereader.html#1f7766">setFeature</a>( "http://xml.org/sax/features/namespace-prefixes", TRUE );
reader.<a href="qxmlsimplereader.html#2d6b2a">parse</a>( source );
<a name="QLabel"></a><a href="qlabel.html">QLabel</a> * namespaceLabel = new <a href="qlabel.html">QLabel</a>(
"Default:\n"
"http://xml.org/sax/features/namespaces: TRUE\n"
"http://xml.org/sax/features/namespace-prefixes: FALSE\n",
container );
<a href="qlabel.html">QLabel</a> * namespacePrefixLabel = new <a href="qlabel.html">QLabel</a>(
"\n"
"http://xml.org/sax/features/namespaces: TRUE\n"
"http://xml.org/sax/features/namespace-prefixes: TRUE\n",
container );
<a href="qlabel.html">QLabel</a> * prefixLabel = new <a href="qlabel.html">QLabel</a>(
"\n"
"http://xml.org/sax/features/namespaces: FALSE\n"
"http://xml.org/sax/features/namespace-prefixes: TRUE\n",
container );
app.<a name="setMainWidget"></a><a href="qapplication.html#7ad759">setMainWidget</a>( container );
container-><a name="setCaption"></a><a href="qwidget.html#d6a291">setCaption</a>("Qt Example - XML Tagreader");
container-><a name="show"></a><a href="qwidget.html#200ee5">show</a>();
return app.<a name="exec"></a><a href="qapplication.html#84c7bf">exec</a>();
}
</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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