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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** 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, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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;
Q_ASSERT(nitr != nums.end());
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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