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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite 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 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.
**
** 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.
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "dataparser.h"
#include <QString>
#include <QVector>
#include <QFile>
#include <QTextStream>
#include <QtDebug>
static QList<qreal> parseNumbersList(QByteArray::const_iterator &itr)
{
QList<qreal> points;
QByteArray temp;
while ((*itr) == ' ')
++itr;
while (((*itr) >= '0' && (*itr) <= '9') ||
(*itr) == '-' || (*itr) == '+') {
temp = QByteArray();
if ((*itr) == '-')
temp += *itr++;
else if ((*itr) == '+')
temp += *itr++;
while ((*itr) >= '0' && (*itr) <= '9')
temp += *itr++;
if ((*itr) == '.')
temp += *itr++;
while ((*itr) >= '0' && (*itr) <= '9')
temp += *itr++;
if (( *itr) == 'e') {
temp += *itr++;
if ((*itr) == '-' ||
(*itr) == '+')
temp += *itr++;
}
while ((*itr) >= '0' && (*itr) <= '9')
temp += *itr++;
while ((*itr) == ' ')
++itr;
if ((*itr) == ',')
++itr;
points.append(temp.toDouble());
//eat the rest of space
while ((*itr) == ' ')
++itr;
}
return points;
}
static QList<QPointF> parsePoints(const QByteArray &line)
{
QList<QPointF> res;
QByteArray::const_iterator it = line.constBegin();
if (*it == ',')
++it;
QList<qreal> nums = parseNumbersList(it);
QList<qreal>::const_iterator nitr;
for (nitr = nums.begin(); nitr != nums.end(); ++nitr) {
qreal x = *nitr;
++nitr;
if (nitr == nums.end()) {
qWarning() << "parsePoints: Even number of co-ordinates required, odd number found: skipping last point";
break;
}
qreal y = *nitr;
res.append(QPointF(x, y));
}
return res;
}
QList< QVector<QPointF> > parseData(const QByteArray &contents)
{
QList<QByteArray> lines = contents.split('\n');
QList<QByteArray>::const_iterator itr;
QList< QVector<QPointF> > res;
QVector<QPointF> current;
for (itr = lines.begin(); itr != lines.end(); ++itr) {
QByteArray line = (*itr).trimmed();
if (line.isEmpty() || line.startsWith('/')) {
if (!current.isEmpty()) {
res.append(current);
current = QVector<QPointF>();
}
continue;
} else {
QList<QPointF> lst = parsePoints(line);
current << lst.toVector();
}
}
return res;
}
QList< QVector<QPointF> > parseFile(const QString &fileName)
{
QList< QVector<QPointF> > res;
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) {
qDebug()<<"couldn't open "<<fileName;
return res;
}
QVector<QPointF> current;
while (!file.atEnd()) {
QByteArray line = file.readLine().trimmed();
if (line.isEmpty() || line.startsWith('/')) {
if (!current.isEmpty()) {
res.append(current);
current = QVector<QPointF>();
}
continue;
} else {
QList<QPointF> lst = parsePoints(line);
current << lst.toVector();
}
}
return res;
}
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