<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/xml/tagreader/tagreader.doc:5 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>A tiny SAX2 parser</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A tiny SAX2 parser</h1> <p> <p> This example presents a small <a href="xml.html#sax2">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 <p> This example is thoroughly explained in a <a href="xml-sax-walkthrough.html">walkthrough.</a> <p> <hr> <p> Header file: <p> <pre>/**************************************************************************** ** $Id: qt/structureparser.h 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for Qt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #ifndef STRUCTUREPARSER_H #define STRUCTUREPARSER_H #include <<a href="qxml-h.html">qxml.h</a>> class QString; class StructureParser : public <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a> { public: bool startDocument(); bool startElement( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& , const <a href="qxmlattributes.html">QXmlAttributes</a>& ); bool endElement( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& ); private: <a href="qstring.html">QString</a> indent; }; #endif </pre> <p> <hr> <p> Implementation: <p> <pre>/**************************************************************************** ** $Id: qt/structureparser.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for Qt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "structureparser.h" #include <stdio.h> #include <<a href="qstring-h.html">qstring.h</a>> <a name="x1903"></a>bool StructureParser::<a href="qxmlcontenthandler.html#startDocument">startDocument</a>() { indent = ""; return TRUE; } <a name="x1904"></a>bool StructureParser::<a href="qxmlcontenthandler.html#startElement">startElement</a>( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& qName, const <a href="qxmlattributes.html">QXmlAttributes</a>& ) { printf( "%s%s\n", (const char*)indent, (const char*)qName ); indent += " "; return TRUE; } <a name="x1902"></a>bool StructureParser::<a href="qxmlcontenthandler.html#endElement">endElement</a>( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& ) { indent.remove( (uint)0, 4 ); return TRUE; } </pre> <p> <hr> <p> Main: <p> <pre>/**************************************************************************** ** $Id: qt/tagreader.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for Qt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "structureparser.h" #include <<a href="qfile-h.html">qfile.h</a>> #include <<a href="qxml-h.html">qxml.h</a>> #include <<a href="qwindowdefs-h.html">qwindowdefs.h</a>> int main( int argc, char **argv ) { if ( argc < 2 ) { fprintf( stderr, "Usage: %s <xmlfile> [<xmlfile> ...]\n", argv[0] ); return 1; } StructureParser handler; <a href="qxmlsimplereader.html">QXmlSimpleReader</a> reader; <a name="x1906"></a> reader.<a href="qxmlreader.html#setContentHandler">setContentHandler</a>( &handler ); for ( int i=1; i < argc; i++ ) { <a href="qfile.html">QFile</a> xmlFile( argv[i] ); <a href="qxmlinputsource.html">QXmlInputSource</a> source( &xmlFile ); <a name="x1905"></a> reader.<a href="qxmlsimplereader.html#parse">parse</a>( source ); } return 0; } </pre> <p>See also <a href="xml-examples.html">Qt XML Examples</a>. <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>Qt 3.3.8</div> </table></div></address></body> </html>