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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qbs.
**
** 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 http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "consoleprogressobserver.h"
#include <QByteArray>
#include <QString>
#include <iostream>
namespace qbs {
void ConsoleProgressObserver::initialize(const QString &task, int max)
{
m_maximum = max;
m_value = 0;
m_percentage = 0;
m_hashesPrinted = 0;
std::cout << task.toLocal8Bit().constData() << ": 0%" << std::flush;
setMaximum(max);
}
void ConsoleProgressObserver::setMaximum(int maximum)
{
m_maximum = maximum;
if (maximum == 0) {
m_percentage = 100;
updateProgressBarIfNecessary();
writePercentageString();
std::cout << std::endl;
}
}
void ConsoleProgressObserver::setProgressValue(int value)
{
if (value > m_maximum || value <= m_value)
return; // TODO: Should be an assertion, but the executor currently breaks it.
m_value = value;
const int newPercentage = (100 * m_value) / m_maximum;
if (newPercentage == m_percentage)
return;
eraseCurrentPercentageString();
m_percentage = newPercentage;
updateProgressBarIfNecessary();
writePercentageString();
if (m_value == m_maximum)
std::cout << std::endl;
else
std::cout << std::flush;
}
void ConsoleProgressObserver::eraseCurrentPercentageString()
{
const int charsToErase = m_percentage == 0 ? 2 : m_percentage < 10 ? 3 : 4;
// (1) Move cursor before the old percentage string.
// (2) Erase current line content to the right of the cursor.
std::cout << QString::fromLocal8Bit("\x1b[%1D").arg(charsToErase).toLocal8Bit().constData();
std::cout << "\x1b[K";
}
void ConsoleProgressObserver::updateProgressBarIfNecessary()
{
static const int TotalHashCount = 50; // Should fit on most terminals without a line break.
const int hashesNeeded = (m_percentage * TotalHashCount) / 100;
if (m_hashesPrinted < hashesNeeded) {
std::cout << QByteArray(hashesNeeded - m_hashesPrinted, '#').constData();
m_hashesPrinted = hashesNeeded;
}
}
void ConsoleProgressObserver::writePercentageString()
{
std::cout << QString::fromLocal8Bit(" %1%").arg(m_percentage).toLocal8Bit().constData();
}
} // namespace qbs
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