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/**************************************************************************
**
** This file is part of Qt SDK**
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).*
**
** Contact: Nokia Corporation qt-info@nokia.com**
**
** 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
**
** 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 are unsure which license is appropriate for your use, please contact
** (qt-info@nokia.com).
**
**************************************************************************/
#include "linereplaceoperation.h"
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QTextStream>
using namespace QInstaller;
LineReplaceOperation::LineReplaceOperation()
{
setName(QLatin1String("LineReplace"));
}
void LineReplaceOperation::backup()
{
}
bool LineReplaceOperation::performOperation()
{
const QStringList args = arguments();
// Arguments:
// 1. filename
// 2. startsWith Search-String
// 3. Replace-Line-String
if (args.count() != 3) {
setError(InvalidArguments);
setErrorString(tr("Invalid arguments in %0: %1 arguments given, 3 expected.").arg(name()).arg(args
.count()));
return false;
}
const QString fileName = args.at(0);
const QString searchString = args.at(1);
const QString replaceString = args.at(2);
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
setError(UserDefinedError);
setErrorString(QObject::tr("Failed to open %1 for reading").arg(fileName));
return false;
}
QString replacement;
QTextStream stream(&file);
while (!stream.atEnd()) {
const QString line = stream.readLine();
if (line.trimmed().startsWith(searchString))
replacement.append(replaceString + QLatin1String("\n"));
else
replacement.append(line + QLatin1String("\n"));
}
file.close();
if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
setError(UserDefinedError);
setErrorString(QObject::tr("Failed to open %1 for writing").arg(fileName));
return false;
}
stream.setDevice(&file);
stream << replacement;
file.close();
return true;
}
bool LineReplaceOperation::undoOperation()
{
return true;
}
bool LineReplaceOperation::testOperation()
{
return true;
}
Operation *LineReplaceOperation::clone() const
{
return new LineReplaceOperation();
}
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