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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#include "util_file.h"
#include <QDataStream>
#include <QFile>
#include <QString>
#include <QTemporaryFile>
#include "scstreamfilter.h"
bool copyData(QIODevice& src, QIODevice& dest)
{
bool success = false;
if ((src.openMode() & QIODevice::ReadOnly) == 0)
return false;
if ((dest.openMode() & QIODevice::WriteOnly) == 0)
return false;
QByteArray bb( 65536, ' ' );
if (bb.size() > 0) // Check for memory allocation failure
{
qint64 byteswritten;
qint64 bytesread = src.read( bb.data(), bb.size() );
success = (bytesread > 0);
while (bytesread > 0)
{
byteswritten = dest.write( bb.data(), bytesread );
success &= (bytesread == byteswritten);
bytesread = src.read( bb.data(), bb.size() );
}
}
return success;
}
bool copyFile(const QString& source, const QString& target)
{
bool success = true;
if ((source.isEmpty()) || (target.isEmpty()))
return false;
if (source == target)
return false;
QFile s(source);
if (!s.exists())
return false;
QFile t(target);
if (s.open(QIODevice::ReadOnly))
{
if (t.open(QIODevice::WriteOnly))
{
success = copyData(s, t);
success &= (s.error() == QFile::NoError && t.error() == QFile::NoError);
t.close();
}
s.close();
}
return success;
}
bool copyFileAtomic(const QString& source, const QString& target)
{
bool success = false;
if ((source.isEmpty()) || (target.isEmpty()))
return false;
if (source == target)
return false;
QFile srcFile(source);
QString tempFileName;
QTemporaryFile* tempFile = new QTemporaryFile(target + "_XXXXXX");
if (!tempFile)
return false;
if (srcFile.open(QIODevice::ReadOnly))
{
if (tempFile->open())
{
tempFileName = tempFile->fileName();
success = copyData(srcFile, *tempFile);
success &= (srcFile.error() == QFile::NoError && tempFile->error() == QFile::NoError);
tempFile->close();
}
srcFile.close();
}
if (success)
{
if (QFile::exists(target))
success = QFile::remove(target);
if (success)
{
// We delete temporary file now to force file close
// QTemporaryFile::close() do not really close file
tempFile->setAutoRemove(false);
delete tempFile;
tempFile = NULL;
success = QFile::rename(tempFileName, target);
}
}
if (tempFile)
delete tempFile;
return success;
}
bool copyFileToFilter(const QString& source, ScStreamFilter& target)
{
bool copySucceed = true;
int bytesread = 0;
if (source.isEmpty())
return false;
if (!QFile::exists(source))
return false;
QFile s(source);
QByteArray bb( 65536, ' ' );
if (bb.size() <= 0) // Check for memory allocation failure
return false;
if (s.open(QIODevice::ReadOnly))
{
bytesread = s.read( bb.data(), bb.size() );
while (bytesread > 0)
{
copySucceed &= target.writeData(bb.data(), bytesread);
bytesread = s.read( bb.data(), bb.size() );
}
copySucceed &= (s.error() == QFile::NoError);
s.close();
}
return copySucceed;
}
bool copyFileToStream(const QString& source, QDataStream& target)
{
bool copySucceed = true;
int bytesread, byteswrite;
if (source.isEmpty())
return false;
if (!QFile::exists(source))
return false;
if (!target.device()->isOpen() || !target.device()->isWritable())
return false;
QFile s(source);
QByteArray bb( 65536, ' ' );
if (bb.size() <= 0) // Check for memory allocation failure
return false;
if (s.open(QIODevice::ReadOnly))
{
bytesread = s.read( bb.data(), bb.size() );
while (bytesread > 0)
{
byteswrite = target.writeRawData(bb.data(), bytesread);
copySucceed &= (byteswrite == bytesread);
bytesread = s.read( bb.data(), bb.size() );
}
copySucceed &= (s.error() == QFile::NoError);
s.close();
}
return copySucceed;
}
bool moveFile(const QString& source, const QString& target)
{
if (source.isEmpty() || target.isEmpty())
return false;
if (source == target)
return false;
bool moveSucceed = copyFile(source, target);
if (moveSucceed)
moveSucceed &= QFile::remove(source);
return moveSucceed;
}
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