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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
QProcess gzip;
gzip.start("gzip", QStringList() << "-c");
if (!gzip.waitForStarted())
return false;
gzip.write("uncompressed data");
QByteArray compressed;
while (gzip.waitForReadyRead())
compressed += gzip.readAll();
//! [0]
//! [1]
qint64 CustomDevice::bytesAvailable() const
{
return buffer.size() + QIODevice::bytesAvailable();
}
//! [1]
//! [2]
QFile file("box.txt");
if (file.open(QFile::ReadOnly)) {
char buf[1024];
qint64 lineLength = file.readLine(buf, sizeof(buf));
if (lineLength != -1) {
// the line is available in buf
}
}
//! [2]
//! [3]
bool CustomDevice::canReadLine() const
{
return buffer.contains('\n') || QIODevice::canReadLine();
}
//! [3]
//! [4]
bool isExeFile(QFile *file)
{
char buf[2];
if (file->peek(buf, sizeof(buf)) == sizeof(buf))
return (buf[0] == 'M' && buf[1] == 'Z');
return false;
}
//! [4]
//! [5]
bool isExeFile(QFile *file)
{
return file->peek(2) == "MZ";
}
//! [5]
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