diff -r 000000000000 -r 1918ee327afb tools/porting/src/portingrules.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/porting/src/portingrules.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,296 @@
+/****************************************************************************
+**
+** 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 qt3to4 porting application 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 "portingrules.h"
+#include "logger.h"
+#include "qtsimplexml.h"
+#include <QFile>
+#include <QFileInfo>
+#include <QDir>
+
+QT_BEGIN_NAMESPACE
+
+PortingRules *PortingRules::theInstance  = 0;
+
+void PortingRules::createInstance(QString xmlFilePath)
+{
+    deleteInstance();
+    theInstance  = new PortingRules(xmlFilePath);
+}
+
+PortingRules *PortingRules::instance()
+{
+    if(theInstance) {
+        return theInstance;
+    } else {
+        qWarning("Error: must create a PortingRules instance with createInstance() before calling instance()\n");
+        return 0;
+    }
+}
+
+void PortingRules::deleteInstance()
+{
+    if(theInstance) {
+        delete theInstance;
+        theInstance = 0;
+    }
+}
+
+PortingRules::PortingRules(QString xmlFilePath)
+{
+    parseXml(xmlFilePath);
+}
+
+QList<TokenReplacement*> PortingRules::getTokenReplacementRules()
+{
+    if(tokenRules.isEmpty())
+         addLogWarning(QLatin1String("Warning: token rules list is empty"));
+    return tokenRules;
+}
+
+QStringList PortingRules::getHeaderList(QtVersion qtVersion)
+{
+    if(qt3Headers.isEmpty() || qt4Headers.isEmpty())
+         addLogWarning(QLatin1String("Warning: headers list is empty"));
+
+    if (qtVersion==Qt3)
+        return qt3Headers;
+    else //Qt4
+        return qt4Headers;
+}
+
+QHash<QByteArray, QByteArray> PortingRules::getNeededHeaders()
+{
+    if(neededHeaders.isEmpty())
+         addLogWarning(QLatin1String("Warning: needed headers list is empty"));
+    return neededHeaders;
+}
+
+QStringList PortingRules::getInheritsQt()
+{
+    if(tokenRules.isEmpty())
+        addLogWarning(QLatin1String("Warning: inheritsQtClass list is empty"));
+    return inheritsQtClass;
+}
+
+QHash<QByteArray, QByteArray> PortingRules::getClassLibraryList()
+{
+    if(classLibraryList.isEmpty())
+        addLogWarning(QLatin1String("Warning: classLibraryList list is empty"));
+    return classLibraryList;
+}
+
+QHash<QByteArray, QByteArray> PortingRules::getHeaderReplacements()
+{
+    return headerReplacements;
+}
+
+/*
+    Loads rule xml file given by fileName, and sets up data structures.
+    The rules can generally be divided into to types, replacement rules and
+    info rules.
+
+    Replacement rules has the form Qt3Symobl -> Qt4Symbol
+    Info rules includes the NeedHeader, Qt3Header, Qt4Header, InhertitsQt
+    rule types.
+*/
+void PortingRules::parseXml(QString fileName)
+{
+    QtSimpleXml *xmlPointer = loadXml(fileName);
+    QtSimpleXml &xml = *xmlPointer;
+
+    int ruleCount = xml[QLatin1String("Rules")].numChildren();
+    ++ruleCount;
+
+    for(int rule=0; rule<ruleCount; ++rule) {
+        QtSimpleXml &currentRule = xml[QLatin1String("Rules")][rule];
+        QString ruleType = currentRule.attribute(QLatin1String("Type"));
+
+        if(isReplacementRule(ruleType)) {
+            QString qt3Symbol = currentRule[QLatin1String("Qt3")].text();
+            QString qt4Symbol = currentRule[QLatin1String("Qt4")].text();
+
+            QString disable = currentRule.attribute(QLatin1String("Disable"));
+            if(disable == QLatin1String("True") || disable == QLatin1String("true")) {
+                disableRule(currentRule);
+                continue;
+            }
+
+            if (isRuleDisabled(currentRule))
+                continue;
+
+            if(ruleType == QLatin1String("RenamedHeader")) {
+              headerReplacements.insert(qt3Symbol.toLatin1(), qt4Symbol.toLatin1());
+            } else if(ruleType == QLatin1String("RenamedClass") || ruleType == QLatin1String("RenamedToken") ) {
+                tokenRules.append(new ClassNameReplacement(
+                        qt3Symbol.toLatin1(), qt4Symbol.toLatin1()));
+            } else if(ruleType == QLatin1String("RenamedEnumvalue") || ruleType == QLatin1String("RenamedType") ||
+                    ruleType == QLatin1String("RenamedQtSymbol") ) {
+                checkScopeAddRule(currentRule);
+            }
+        } else if(ruleType == QLatin1String("NeedHeader")) {
+            const QByteArray className = currentRule[QLatin1String("Class")].text().toLatin1();
+            const QByteArray headerName = currentRule[QLatin1String("Header")].text().toLatin1();
+            neededHeaders.insert(className, headerName);
+        }
+        else if(ruleType == QLatin1String("qt3Header")) {
+            qt3Headers += currentRule.text();
+        }
+        else if(ruleType == QLatin1String("qt4Header")) {
+            qt4Headers += currentRule.text();
+        }
+        else if(ruleType == QLatin1String("InheritsQt")) {
+            inheritsQtClass += currentRule.text();
+        }
+        else if(ruleType == QLatin1String("Qt4Class")) {
+            // Get library name, make it lowercase and chop of the "Qt" prefix.
+            const QByteArray libraryName = currentRule[QLatin1String("Library")].text().toLatin1().toLower().mid(2);
+            classLibraryList.insert(currentRule[QLatin1String("Name")].text().toLatin1(), libraryName);
+        }
+    }
+
+    QString includeFile = xml[QLatin1String("Rules")][QLatin1String("Include")].text();
+
+    if(!includeFile.isNull()) {
+        QString resolvedIncludeFile = resolveFileName(fileName, includeFile);
+        if (!resolvedIncludeFile.isEmpty())
+            parseXml(resolvedIncludeFile);
+    }
+
+    delete xmlPointer;
+}
+
+/*
+    Check if the rule in currentRule describes a qualified name
+    (like QButton::ToggleState). If so, create a scoped ScopedTokenReplacement,
+    else create a GenericTokenReplacement
+*/
+void PortingRules::checkScopeAddRule(/*const */QtSimpleXml &currentRule)
+{
+    QByteArray oldToken = currentRule[QLatin1String("Qt3")].text().toLatin1();
+    QByteArray newToken = currentRule[QLatin1String("Qt4")].text().toLatin1();
+
+    if (oldToken.contains(QByteArray("::")))
+        tokenRules.append(new ScopedTokenReplacement(oldToken, newToken));
+    else
+        tokenRules.append(new GenericTokenReplacement(oldToken, newToken));
+}
+
+/*
+    Loads the xml-file given by fileName into a new'ed QtSimpleXml, which is
+    returned by pointer.
+*/
+QtSimpleXml *PortingRules::loadXml(const QString fileName) const
+{
+    QFile f(fileName);
+    if(!f.open(QIODevice::ReadOnly)) {
+        qFatal("Could not find rule file %s", fileName.toLatin1().constData());
+    }
+    QtSimpleXml *xml = new QtSimpleXml();
+    if(!xml->setContent(&f))
+        addLogError(QLatin1String("Xml parsing failed: ") + xml->errorString());
+
+    return xml;
+}
+
+/*
+    Resolves includeFilePath against currentFilePath. If currentFilePath
+    contains foo/bar.xml, and includeFilePath contains bar2.xml, the returned
+    result will be foo/bar2.xml. If includeFilePath is absolute, it is returned
+    unmodified.
+*/
+QString PortingRules::resolveFileName(const QString currentFilePath,
+                                      const QString includeFilePath) const
+{
+    if(QFileInfo(includeFilePath).isAbsolute())
+        return includeFilePath;
+    QString relativeDirectory = QFileInfo(currentFilePath).dir().dirName();
+    QString testFileName = relativeDirectory + QLatin1String("/") + includeFilePath;
+    if (QFile::exists(testFileName))
+        return testFileName;
+
+    return QString();
+}
+/*
+    Checks if a rule is a replacement rule.
+*/
+bool PortingRules::isReplacementRule(const QString ruleType) const
+{
+    return (ruleType == QLatin1String("RenamedHeader") || ruleType == QLatin1String("RenamedClass") ||
+            ruleType == QLatin1String("RenamedToken") || ruleType == QLatin1String("RenamedEnumvalue") ||
+            ruleType == QLatin1String("RenamedType") || ruleType == QLatin1String("RenamedQtSymbol") );
+}
+
+/*
+    Disables a replacement rule given by the replacementRule parameter
+*/
+void PortingRules::disableRule(QtSimpleXml &replacementRule)
+{
+    RuleDescription ruleDescription(replacementRule);
+    disabledRules.append(ruleDescription);
+}
+
+/*
+    Checks if a replacement rule is disabled or not
+*/
+bool PortingRules::isRuleDisabled(QtSimpleXml &replacementRule) const
+{
+    RuleDescription ruleDescription(replacementRule);
+    return disabledRules.contains(ruleDescription);
+}
+
+/*
+    Adds a warning to the global logger.
+*/
+void PortingRules::addLogWarning(const QString text) const
+{
+    Logger::instance()->addEntry(new PlainLogEntry(QLatin1String("Warning"), QLatin1String("Porting"), text));
+}
+
+/*
+    Adds an error to the global logger.
+*/
+void PortingRules::addLogError(const QString text) const
+{
+    Logger::instance()->addEntry(new PlainLogEntry(QLatin1String("Error"), QLatin1String("Porting"), text));
+}
+
+QT_END_NAMESPACE