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/*
* Copyright (C) by Daniel Molkentin <danimo@owncloud.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; version 2 of the License.
*
* 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.
*/
#include "filesystem.h"
#include "utility.h"
#include <QFile>
#include <QFileInfo>
#include <QDebug>
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
#include <qabstractfileengine.h>
#endif
#ifdef Q_OS_WIN
#include <windef.h>
#include <winbase.h>
#endif
// We use some internals of csync:
extern "C" int c_utimes(const char *, const struct timeval *);
extern "C" void csync_win32_set_file_hidden( const char *file, bool h );
extern "C" {
#include "vio/csync_vio_handle.h"
#include "vio/csync_vio_file_stat.h"
#include "vio/csync_vio_local.h"
}
namespace Mirall {
bool FileSystem::fileEquals(const QString& fn1, const QString& fn2)
{
// compare two files with given filename and return true if they have the same content
QFile f1(fn1);
QFile f2(fn2);
if (!f1.open(QIODevice::ReadOnly) || !f2.open(QIODevice::ReadOnly)) {
qDebug() << "fileEquals: Failed to open " << fn1 << "or" << fn2;
return false;
}
if (f1.size() != f2.size()) {
return false;
}
const int BufferSize = 16 * 1024;
char buffer1[BufferSize];
char buffer2[BufferSize];
do {
int r = f1.read(buffer1, BufferSize);
if (f2.read(buffer2, BufferSize) != r) {
// this should normaly not happen: the file are supposed to have the same size.
return false;
}
if (r <= 0) {
return true;
}
if (memcmp(buffer1, buffer2, r) != 0) {
return false;
}
} while (true);
return false;
}
void FileSystem::setFileHidden(const QString& filename, bool hidden)
{
return csync_win32_set_file_hidden(filename.toUtf8().constData(), hidden);
}
time_t FileSystem::getModTime(const QString &filename)
{
csync_vio_file_stat_t* stat = csync_vio_file_stat_new();
qint64 result = -1;
if (csync_vio_local_stat(filename.toUtf8().data(), stat) != -1
&& (stat->fields & CSYNC_VIO_FILE_STAT_FIELDS_MTIME))
{
result = stat->mtime;
}
else
{
qDebug() << "Could not get modification time for" << filename
<< "with csync, using QFileInfo";
result = Utility::qDateTimeToTime_t(QFileInfo(filename).lastModified());
}
csync_vio_file_stat_destroy(stat);
return result;
}
bool FileSystem::setModTime(const QString& filename, time_t modTime)
{
struct timeval times[2];
times[0].tv_sec = times[1].tv_sec = modTime;
times[0].tv_usec = times[1].tv_usec = 0;
int rc = c_utimes(filename.toUtf8().data(), times);
if (rc != 0) {
qDebug() << "Error setting mtime for" << filename
<< "failed: rc" << rc << ", errno:" << errno;
return false;
}
return true;
}
bool FileSystem::renameReplace(const QString& originFileName, const QString& destinationFileName, QString* errorString)
{
#ifndef Q_OS_WIN
bool success;
QFile orig(originFileName);
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
success = orig.fileEngine()->rename(destinationFileName);
// qDebug() << "Renaming " << tmpFile.fileName() << " to " << fn;
#else
// We want a rename that also overwite. QFile::rename does not overwite.
// Qt 5.1 has QSaveFile::renameOverwrite we cold use.
// ### FIXME
QFile::remove(destinationFileName);
success = orig.rename(destinationFileName);
#endif
if (!success) {
*errorString = orig.errorString();
qDebug() << "FAIL: renaming temp file to final failed: " << *errorString ;
return false;
}
#else //Q_OS_WIN
BOOL ok;
ok = MoveFileEx((wchar_t*)originFileName.utf16(),
(wchar_t*)destinationFileName.utf16(),
MOVEFILE_REPLACE_EXISTING+MOVEFILE_COPY_ALLOWED+MOVEFILE_WRITE_THROUGH);
if (!ok) {
wchar_t *string = 0;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
NULL, ::GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPWSTR)&string, 0, NULL);
*errorString = QString::fromWCharArray(string);
LocalFree((HLOCAL)string);
return false;
}
#endif
return true;
}
}
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