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authorkh1 <karsten.heimrich@nokia.com>2012-03-15 14:53:47 +0100
committerKarsten Heimrich <karsten.heimrich@nokia.com>2012-03-19 16:14:04 +0100
commitbe3b47d0d504a3409ce66bd77bb8c0acff87c4f5 (patch)
tree09dfb02d484a4f395991972b828da71400fb761a /src/libs/kdtools/kdupdaterupdateoperation.cpp
parent9fd62353cf7f973d78cd2093328ac15b5c4980b6 (diff)
Reorganize the tree, have better ifw.pri. Shadow build support.
Change-Id: I01fb12537f863ed0744979973c7e4153889cc5cb Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>
Diffstat (limited to 'src/libs/kdtools/kdupdaterupdateoperation.cpp')
-rw-r--r--src/libs/kdtools/kdupdaterupdateoperation.cpp388
1 files changed, 388 insertions, 0 deletions
diff --git a/src/libs/kdtools/kdupdaterupdateoperation.cpp b/src/libs/kdtools/kdupdaterupdateoperation.cpp
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+/****************************************************************************
+** Copyright (C) 2001-2010 Klaralvdalens Datakonsult AB. All rights reserved.
+**
+** This file is part of the KD Tools library.
+**
+** Licensees holding valid commercial KD Tools licenses may use this file in
+** accordance with the KD Tools Commercial License Agreement provided with
+** the Software.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU Lesser General Public License version 2 and version 3 as published by the
+** Free Software Foundation and appearing in the file LICENSE.LGPL included.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** Contact info@kdab.com if any conditions of this licensing are not
+** clear to you.
+**
+**********************************************************************/
+
+#include "kdupdaterupdateoperation.h"
+
+#include "kdupdaterapplication.h"
+
+#include <QDebug>
+#include <QDir>
+#include <QFileInfo>
+#include <QTemporaryFile>
+
+/*!
+ \ingroup kdupdater
+ \class KDUpdater::UpdateOperation kdupdaterupdateoperation.h KDUpdaterUpdateOperation
+ \brief Abstract base class for update operations.
+
+ The \ref KDUpdater::UpdateOperation is an abstract class that specifies an interface for
+ update operations. Concrete implementations of this class must perform a single update
+ operation like copy, move, delete etc.
+
+ \note Two seperate threads cannot be using a single instance of KDUpdater::UpdateOperation
+ at the same time.
+*/
+
+/*
+ * \internal
+ * Returns a filename for a temporary file based on \a templateName
+ */
+static QString backupFileName(const QString &templateName)
+{
+ const QFileInfo templ(templateName);
+ QTemporaryFile file( QDir::temp().absoluteFilePath(templ.fileName()));
+ file.open();
+ const QString name = file.fileName();
+ file.close();
+ file.remove();
+ return name;
+}
+
+using namespace KDUpdater;
+
+/*!
+ Constructor
+*/
+UpdateOperation::UpdateOperation()
+ : m_error(0), m_application(0)
+{}
+
+/*!
+ Destructor
+*/
+UpdateOperation::~UpdateOperation()
+{
+ if (Application *app = Application::instance())
+ app->addFilesForDelayedDeletion(filesForDelayedDeletion());
+}
+
+/*!
+ Returns the update operation name.
+
+ \sa setName()
+*/
+QString UpdateOperation::name() const
+{
+ return m_name;
+}
+
+/*!
+ Returns a command line string that describes the update operation. The returned
+ string would be of the form
+
+ <name> <arg1> <arg2> <arg3> ....
+*/
+QString UpdateOperation::operationCommand() const
+{
+ QString argsStr = m_arguments.join(QLatin1String( " " ));
+ return QString::fromLatin1( "%1 %2" ).arg(m_name, argsStr);
+}
+
+/*!
+ Returns true if there exists a setting called \a name. Otherwise returns false.
+*/
+bool UpdateOperation::hasValue(const QString &name) const
+{
+ return m_values.contains(name);
+}
+
+/*!
+ Clears the value of setting \a name and removes it.
+ \post hasValue( \a name ) returns false.
+*/
+void UpdateOperation::clearValue(const QString &name)
+{
+ m_values.remove(name);
+}
+
+/*!
+ Returns the value of setting \a name. If the setting does not exists,
+ this returns an empty QVariant.
+*/
+QVariant UpdateOperation::value(const QString &name) const
+{
+ return hasValue(name) ? m_values[name] : QVariant();
+}
+
+/*!
+ Sets the value of setting \a name to \a value.
+*/
+void UpdateOperation::setValue(const QString &name, const QVariant &value)
+{
+ m_values[name] = value;
+}
+
+/*!
+ Sets a update operation name. Subclasses will have to provide a unique
+ name to describe this operation.
+*/
+void UpdateOperation::setName(const QString &name)
+{
+ m_name = name;
+}
+
+/*!
+ Through this function, arguments to the update operation can be specified
+ to the update operation.
+*/
+void UpdateOperation::setArguments(const QStringList &args)
+{
+ m_arguments = args;
+}
+
+/*!
+ Sets the Application for this operation.
+ This may be used by some operations
+*/
+void UpdateOperation::setApplication(Application *application)
+{
+ m_application = application;
+}
+
+/*!
+ Returns the last set function arguments.
+*/
+QStringList UpdateOperation::arguments() const
+{
+ return m_arguments;
+}
+
+/*!
+ Returns error details in case performOperation() failed.
+*/
+QString UpdateOperation::errorString() const
+{
+ return m_errorString;
+}
+
+/*!
+ * Can be used by subclasses to report more detailed error codes (optional).
+ * To check if an operation was successful, use the return value of performOperation().
+ */
+int UpdateOperation::error() const
+{
+ return m_error;
+}
+
+/*!
+ * Used by subclasses to set the error string.
+ */
+void UpdateOperation::setErrorString(const QString &str)
+{
+ m_errorString = str;
+}
+
+/*!
+ * Used by subclasses to set the error code.
+ */
+void UpdateOperation::setError(int error, const QString &errorString)
+{
+ m_error = error;
+ if (!errorString.isNull())
+ m_errorString = errorString;
+}
+
+/*!
+ Clears the previously set argument list and application
+*/
+void UpdateOperation::clear()
+{
+ m_arguments.clear();
+ m_application = 0;
+}
+
+QStringList UpdateOperation::filesForDelayedDeletion() const
+{
+ return m_delayedDeletionFiles;
+}
+
+/*!
+ Registers a file to be deleted later, once the application was restarted
+ (and the file isn't used anymore for sure).
+ @param files the files to be registered
+*/
+void UpdateOperation::registerForDelayedDeletion(const QStringList &files)
+{
+ m_delayedDeletionFiles << files;
+}
+
+/*!
+ Tries to delete \a file. If \a file can't be deleted, it gets registered for delayed deletion.
+*/
+bool UpdateOperation::deleteFileNowOrLater(const QString &file, QString *errorString)
+{
+ if (file.isEmpty() || QFile::remove(file))
+ return true;
+
+ if (!QFile::exists(file))
+ return true;
+
+ const QString backup = backupFileName(file);
+ QFile f(file);
+ if (!f.rename(backup)) {
+ if (errorString)
+ *errorString = f.errorString();
+ return false;
+ }
+ registerForDelayedDeletion(QStringList(backup));
+ return true;
+}
+
+/*!
+ Returns a pointer to the current Application
+*/
+Application *UpdateOperation::application() const
+{
+ return m_application;
+}
+
+/*!
+ \fn virtual void KDUpdater::UpdateOperation::backup() = 0;
+
+ Subclasses must implement this function to backup any data before performing the action.
+*/
+
+/*!
+ \fn virtual bool KDUpdater::UpdateOperation::performOperation() = 0;
+
+ Subclasses must implement this function to perform the update operation
+*/
+
+/*!
+ \fn virtual bool KDUpdater::UpdateOperation::undoOperation() = 0;
+
+ Subclasses must implement this function to perform the reverse of the operation.
+*/
+
+/*!
+ \fn virtual bool KDUpdater::UpdateOperation::testOperation() = 0;
+
+ Subclasses must implement this function to perform the test operation.
+*/
+
+/*!
+ \fn virtual bool KDUpdater::UpdateOperation::clone() = 0;
+
+ Subclasses must implement this function to clone the current operation.
+*/
+
+/*!
+ Saves this UpdateOperation in XML. You can override this method to store your own extra-data.
+ The default implementation is taking care of arguments and values set via setValue.
+*/
+QDomDocument UpdateOperation::toXml() const
+{
+ QDomDocument doc;
+ QDomElement root = doc.createElement(QLatin1String("operation"));
+ doc.appendChild(root);
+ QDomElement args = doc.createElement(QLatin1String("arguments"));
+ Q_FOREACH (const QString &s, arguments()) {
+ QDomElement arg = doc.createElement(QLatin1String("argument"));
+ arg.appendChild(doc.createTextNode(s));
+ args.appendChild(arg);
+ }
+ root.appendChild(args);
+ if (m_values.isEmpty())
+ return doc;
+
+ // append all values set with setValue
+ QDomElement values = doc.createElement(QLatin1String("values"));
+ for (QVariantMap::const_iterator it = m_values.begin(); it != m_values.end(); ++it) {
+ QDomElement value = doc.createElement(QLatin1String("value"));
+ const QVariant& variant = it.value();
+ value.setAttribute(QLatin1String("name"), it.key());
+ value.setAttribute(QLatin1String("type"), QLatin1String( QVariant::typeToName( variant.type())));
+
+ if (variant.type() != QVariant::List && variant.type() != QVariant::StringList && qVariantCanConvert<QString>(variant)) {
+ // it can convert to string? great!
+ value.appendChild( doc.createTextNode(variant.toString()));
+ } else {
+ // no? then we have to go the hard way...
+ QByteArray data;
+ QDataStream stream(&data, QIODevice::WriteOnly);
+ stream << variant;
+ value.appendChild(doc.createTextNode(QLatin1String( data.toBase64().data())));
+ }
+ values.appendChild(value);
+ }
+ root.appendChild(values);
+ return doc;
+}
+
+/*!
+ Restores UpdateOperation's arguments and values from the XML document \a doc.
+ Returns true on success, otherwise false.
+*/
+bool UpdateOperation::fromXml(const QDomDocument &doc)
+{
+ QStringList args;
+ const QDomElement root = doc.documentElement();
+ const QDomElement argsElem = root.firstChildElement(QLatin1String("arguments"));
+ Q_ASSERT(! argsElem.isNull());
+ for (QDomNode n = argsElem.firstChild(); ! n.isNull(); n = n.nextSibling()) {
+ const QDomElement e = n.toElement();
+ if (!e.isNull() && e.tagName() == QLatin1String("argument"))
+ args << e.text();
+ }
+ setArguments(args);
+
+ m_values.clear();
+ const QDomElement values = root.firstChildElement(QLatin1String("values"));
+ for (QDomNode n = values.firstChild(); !n.isNull(); n = n.nextSibling()) {
+ const QDomElement v = n.toElement();
+ if (v.isNull() || v.tagName() != QLatin1String("value"))
+ continue;
+
+ const QString name = v.attribute(QLatin1String("name"));
+ const QString type = v.attribute(QLatin1String("type"));
+ const QString value = v.text();
+
+ const QVariant::Type t = QVariant::nameToType(type.toLatin1().data());
+ QVariant var = qVariantFromValue(value);
+ if (t == QVariant::List || t == QVariant::StringList || !var.convert(t)) {
+ QDataStream stream(QByteArray::fromBase64( value.toLatin1()));
+ stream >> var;
+ }
+
+ m_values[name] = var;
+ }
+
+ return true;
+}
+
+/*!
+ Restores UpdateOperation's arguments and values from the XML document at path \a xml.
+ Returns true on success, otherwise false.
+ \overload
+*/
+bool UpdateOperation::fromXml(const QString &xml)
+{
+ QDomDocument doc;
+ QString errorMsg;
+ int errorLine;
+ int errorColumn;
+ if (!doc.setContent( xml, &errorMsg, &errorLine, &errorColumn)) {
+ qWarning() << "Error parsing xml error=" << errorMsg << "line=" << errorLine << "column=" << errorColumn;
+ return false;
+ }
+ return fromXml(doc);
+}