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/**************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "linereplaceoperation.h"
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QTextStream>
using namespace QInstaller;
/*!
\inmodule QtInstallerFramework
\class QInstaller::LineReplaceOperation
\internal
*/
LineReplaceOperation::LineReplaceOperation(PackageManagerCore *core)
: UpdateOperation(core)
{
setName(QLatin1String("LineReplace"));
}
void LineReplaceOperation::backup()
{
}
bool LineReplaceOperation::performOperation()
{
// Arguments:
// 1. filename
// 2. startsWith Search-String
// 3. Replace-Line-String
if (!checkArgumentCount(3))
return false;
const QStringList args = arguments();
const QString fileName = args.at(0);
const QString searchString = args.at(1);
const QString replaceString = args.at(2);
if (searchString.isEmpty()) {
setError(InvalidArguments);
setErrorString(tr("Invalid argument in %1: Empty search "
"argument is not supported.").arg(name()));
return false;
}
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
setError(UserDefinedError);
setErrorString(tr("Cannot open file \"%1\" for reading: %2").arg(
QDir::toNativeSeparators(fileName), file.errorString()));
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(tr("Cannot open file \"%1\" for writing: %2").arg(
QDir::toNativeSeparators(fileName), file.errorString()));
return false;
}
stream.setDevice(&file);
stream << replacement;
file.close();
return true;
}
bool LineReplaceOperation::undoOperation()
{
return true;
}
bool LineReplaceOperation::testOperation()
{
return true;
}
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