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/****************************************************************************
** Hyne Final Fantasy VIII Save Editor
** Copyright (C) 2012-2013 Arzel Jérôme <myst6re@gmail.com>
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include "GZIP.h"
#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0)) && (defined(Q_OS_WIN) || defined(Q_OS_MAC))
#include "zlib-1.2.7/zlib.h"
#else
#include <zlib.h>
#endif
#undef compress // conflict with GZIP::compress
#define BUF_SIZE 8192
QByteArray GZIP::decompress(const QByteArray &data, int/* decSize*/)
{
QByteArray ungzip;
QTemporaryFile temp;
if(!temp.open()) {
return QByteArray();
}
temp.write(data);
temp.close();
gzFile file = gzopen(temp.fileName().toLatin1(), "rb");
if(!file) {
return QByteArray();
}
char buffer[10000];
int r;
while((r = gzread(file, buffer, 10000)) > 0) {
ungzip.append(buffer, r);
}
gzclose(file);
return ungzip;
}
QByteArray GZIP::compress(const QByteArray &ungzip)
{
QString tempPath = QDir::tempPath()+"/qt_temp.gz";
gzFile file2 = gzopen(tempPath.toLatin1(), "wb9");
if(!file2) {
return QByteArray();
}
gzwrite(file2, ungzip.constData(), ungzip.size());
gzclose(file2);
QFile finalFile(tempPath);
if(!finalFile.open(QIODevice::ReadOnly)) {
return QByteArray();
}
QByteArray data = finalFile.readAll();
finalFile.remove();
return data;
}
bool GZIP::decompress(const QString &pathFrom, const QString &pathTo)
{
QFile to(pathTo);
if(!to.open(QIODevice::WriteOnly)) {
return false;
}
gzFile file = gzopen(pathFrom.toLatin1(), "rb");
if(!file) {
return false;
}
char buffer[BUF_SIZE];
int r;
while((r = gzread(file, buffer, BUF_SIZE)) > 0) {
to.write(buffer, r);
}
gzclose(file);
to.close();
return true;
}
bool GZIP::compress(const QString &pathFrom, const QString &pathTo)
{
QFile from(pathFrom);
if(!from.open(QIODevice::ReadOnly)) {
return false;
}
gzFile file = gzopen(pathTo.toLatin1(), "wb9");
if(!file) {
return false;
}
char buffer[BUF_SIZE];
int r;
while((r = from.read(buffer, BUF_SIZE)) > 0) {
gzwrite(file, buffer, BUF_SIZE);
}
gzclose(file);
from.close();
return true;
}
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