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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "backends/platform/ps2/rawsavefile.h"
#include "backends/platform/ps2/savefilemgr.h"
RawReadFile::RawReadFile(McAccess *mcAccess) {
_mcAccess = mcAccess;
_size = -1;
_pos = 0;
_buf = NULL;
_eof = false;
}
RawReadFile::~RawReadFile(void) {
if (_buf)
free(_buf);
}
bool RawReadFile::bufOpen(const char *path) {
int handle = _mcAccess->open(path, O_RDONLY);
printf("RawReadFile Open: \"%s\" => %d\n", path, handle);
if (handle >= 0) {
_size = _mcAccess->size(handle);
_buf = (uint8 *)memalign(64, _size);
int res = _mcAccess->read(handle, _buf, _size);
if (res != _size) {
free(_buf);
_size = -1;
_buf = NULL;
}
_mcAccess->close(handle);
} else {
_size = -1;
_buf = NULL;
}
_pos = 0;
return (_buf != NULL);
}
int RawReadFile::bufTell(void) const {
return _pos;
}
int RawReadFile::bufSeek(int ofs, int whence) {
switch (whence) {
case SEEK_SET:
_pos = ofs;
break;
case SEEK_CUR:
_pos += ofs;
break;
case SEEK_END:
_pos = _size + ofs;
break;
}
if (_pos < 0)
_pos = 0;
else if (_pos > _size)
_pos = _size;
_eof = false;
return _pos;
}
int RawReadFile::bufRead(void *dest, int size) {
if (_pos + size > _size) {
size = _size - _pos;
_eof = true;
}
memcpy(dest, _buf + _pos, size);
_pos += size;
return size;
}
int RawReadFile::bufSize(void) const {
return _size;
}
bool RawReadFile::bufEof(void) const {
return _eof;
}
void RawReadFile::bufClearErr(void) const {
_eof = false;
}
RawWriteFile::RawWriteFile(McAccess *mcAccess) {
_mcAccess = mcAccess;
_size = 64 * 1024;
_buf = (uint8 *)memalign(64, _size);
_pos = 0;
_handle = -1;
}
RawWriteFile::~RawWriteFile() {
if (_pos != 0) {
printf("RawWriteFile d'tor: file wasn't flushed!\n");
bufFlush();
}
free(_buf);
if (_handle >= 0)
_mcAccess->close(_handle);
}
bool RawWriteFile::bufOpen(const char *path) {
_handle = _mcAccess->open(path, O_WRONLY | O_CREAT);
strcpy(_filename, path);
return (_handle >= 0);
}
void RawWriteFile::bufWrite(const void *buf, int len) {
while (_pos + len > _size) {
_size = _size * 2;
_buf = (uint8 *)realloc(_buf, _size);
}
memcpy(_buf + _pos, buf, len);
_pos += len;
}
bool RawWriteFile::bufFlush(void) {
int result = _mcAccess->write(_handle, _buf, _pos);
if (_pos != result) {
if (result > 0) {
memmove(_buf, _buf + result, _pos - result);
_pos -= result;
}
return false;
}
_pos = 0;
return true;
}
int RawWriteFile::bufTell(void) const {
return _pos;
}
void RawWriteFile::removeFile(void) {
if (_handle >= 0)
_mcAccess->close(_handle);
_handle = -1;
_pos = 0;
_mcAccess->remove(_filename);
}
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