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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qt3to4.h"
#include <QApplication>
#include <QDir>
#include <QFile>
#include <QHash>
#include <QLibraryInfo>
#include <QXmlDefaultHandler>
#include <QXmlSimpleReader>
QT_BEGIN_NAMESPACE
class ContentHandler: public QXmlDefaultHandler
{
public:
typedef QPair<QString, QString> Rule;
typedef QList<Rule> RuleList;
public:
ContentHandler() {}
inline RuleList renamedHeaders() const
{ return rules(QString::fromLatin1("RenamedHeader")); }
inline RuleList renamedClasses() const
{ return rules(QString::fromLatin1("RenamedClass")); }
inline RuleList renamedEnums() const
{ return rules(QString::fromLatin1("RenamedEnumvalue")); }
inline RuleList rules(const QString &kind) const
{ return m_rules.value(kind); }
virtual bool startDocument()
{
m_rules.clear();
m_state.current.clear();
m_state.kind.clear();
m_state.q3.clear();
m_state.q4.clear();
return true;
}
virtual bool startElement(const QString &, const QString &, const QString &qName, const QXmlAttributes &attrs)
{
if (qName == QLatin1String("item")) {
m_state.kind = attrs.value(QLatin1String("Type"));
m_state.current.clear();
m_state.q3.clear();
m_state.q4.clear();
if (!m_rules.contains(m_state.kind))
m_rules[m_state.kind].clear();
return true;
}
return true; // ### only if it is a valid tag
}
virtual bool endElement(const QString &, const QString &, const QString &qName)
{
if (qName == QLatin1String("Qt3")) {
m_state.q3 = m_state.current.trimmed();
} else if (qName == QLatin1String("Qt4")) {
m_state.q4 = m_state.current.trimmed();
} else if (qName == QLatin1String("item")
&& (m_state.kind == QLatin1String("RenamedHeader")
|| m_state.kind == QLatin1String("RenamedEnumvalue")
|| m_state.kind == QLatin1String("RenamedClass"))) {
Rule r(m_state.q3, m_state.q4);
m_rules[m_state.kind].append(r);
}
m_state.current.clear();
return true;
}
virtual bool characters(const QString &ch)
{ m_state.current += ch; return true; }
virtual bool error(const QXmlParseException &e)
{ Q_UNUSED(e); Q_ASSERT(0); return true; }
virtual bool fatalError(const QXmlParseException &e)
{ Q_UNUSED(e); Q_ASSERT(0); return true; }
virtual bool warning(const QXmlParseException &e)
{ Q_UNUSED(e); Q_ASSERT(0); return true; }
private:
QHash<QString, RuleList> m_rules;
struct state
{
QString current;
QString kind;
QString q3;
QString q4;
} m_state;
};
void Porting::readXML(RuleList *renamedHeaders, RuleList *renamedClasses, RuleList *renamedEnums)
{
QString fileName = QLatin1String("q3porting.xml");
QString filePath;
//check QLibraryInfo::DataPath/filename
filePath = QDir::cleanPath(QLibraryInfo::location(QLibraryInfo::DataPath) + QLatin1Char('/') + fileName) ;
//check QLibraryInfo::PrefixPath/tools/porting/src/filename
if (!QFile::exists(filePath))
filePath = QDir::cleanPath(QLibraryInfo::location(QLibraryInfo::PrefixPath) + QLatin1String("/tools/porting/src/") + fileName);
// for bootstrapping, look in the rules file in a location
// relative to where it would be in the source tree
if (!QFile::exists(filePath))
filePath = QDir::cleanPath(QApplication::instance()->applicationDirPath() + QLatin1String("/../tools/porting/src/") + fileName);
if (!QFile::exists(filePath)) {
fprintf(stderr, "Error: Could not find rules file: %s\n", fileName.toLatin1().constData());
Q_ASSERT(0);
}
ContentHandler handler;
QXmlSimpleReader reader;
reader.setContentHandler(&handler);
reader.setErrorHandler(&handler);
QFile file(filePath);
file.open(QFile::ReadOnly);
QXmlInputSource source(file);
bool ok = reader.parse(&source);
Q_UNUSED(ok);
Q_ASSERT(ok);
if (renamedHeaders)
*renamedHeaders = handler.renamedHeaders();
if (renamedClasses)
*renamedClasses = handler.renamedClasses();
if (renamedEnums)
*renamedEnums = handler.renamedEnums();
}
Porting::Porting()
{
readXML(&m_renamedHeaders, &m_renamedClasses, &m_renamedEnums);
}
int Porting::findRule(const RuleList &rules, const QString &q3)
{
for (int i=0; i<rules.count(); ++i)
if (rules.at(i).first == q3)
return i;
return -1;
}
QString Porting::renameHeader(const QString &headerName) const
{
int index = findRule(m_renamedHeaders, headerName);
return index == -1 ? headerName : m_renamedHeaders.at(index).second;
}
QString Porting::renameClass(const QString &className) const
{
if (className == QLatin1String("QSplitter")) // We don't want a Q3Splitter, ever!
return className;
int index = findRule(m_renamedClasses, className);
return index == -1 ? className : m_renamedClasses.at(index).second;
}
QString Porting::renameEnumerator(const QString &enumName) const
{
int index = findRule(m_renamedEnums, enumName);
return index == -1 ? QString() : m_renamedEnums.at(index).second;
}
QT_END_NAMESPACE
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