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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
/* A Class to parse an xml docment of the form
* <database name="...">
* <header>
* <key name=key_name type=String>Displayed Name</key>
* <key name=key2name>key2name</key>
* <key name=key3name type=Date>Key 3</key>
* <key name=key4name type=Int>key 4</key>
* </header>
* <record>
* <key_name>string</key_name>
* <key4name>int</key4name>
* <key2name>string</key2name>
* </record>
* <record>
* ....
* </record>
* ....
* </database>
*
* There is some room for improvment mostly around using better checking
* and the use of more advanced xml features.
*/
#ifndef __XMLSOURCE_H__
#define __XMLSOURCE_H__
#include <qxml.h>
#include <qstring.h>
#include <qstringlist.h>
#include <qstack.h>
#include <qdict.h>
#include "datacache.h"
#include "common.h"
class DBXml : public DBAccess
{
public:
/* create connection and either open or initialize */
DBXml(DBStore *d);
QString type();
bool openSource(QIODevice *);
bool saveSource(QIODevice *);
/* does a db write */
~DBXml();
};
class DBXmlHandler : public QXmlDefaultHandler
{
public:
DBXmlHandler(DBStore *ds);
virtual ~DBXmlHandler();
// return the error protocol if parsing failed
QString errorProtocol();
// overloaded handler functions
bool startDocument();
bool startElement(const QString& namespaceURI, const QString& localName,
const QString& qName, const QXmlAttributes& atts);
bool endElement(const QString& namespaceURI, const QString& localName,
const QString& qName);
bool characters(const QString& ch);
QString errorString();
bool warning(const QXmlParseException& exception);
bool error(const QXmlParseException& exception);
bool fatalError(const QXmlParseException& exception);
private:
QStack<QString> stack;
KeyList *current_keyrep;
DataElem *current_data;
TVVariant::KeyType last_key_type;
QString errorProt;
DBStore *data_store;
enum State {
StateInit,
StateHeader,
StateKey,
StateDocument,
StateRecord,
StateField
};
State state;
QDict<int> keyIndexList;
int keyIndex;
QString key;
};
#endif
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