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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.
*
*/
/*
* This file is based on WME Lite.
* http://dead-code.org/redir.php?target=wmelite
* Copyright (c) 2011 Jan Nedoma
*/
#include "dcgf.h"
#include "BGame.h"
#include "wintypes.h"
#include "BPkgFile.h"
#include "BDiskFile.h"
#include "common/stream.h"
#include "common/file.h"
#include "BFileManager.h"
namespace WinterMute {
//////////////////////////////////////////////////////////////////////////
CBDiskFile::CBDiskFile(CBGame *inGame): CBFile(inGame) {
_file = NULL;
_data = NULL;
_compressed = false;
_prefixSize = 0;
}
//////////////////////////////////////////////////////////////////////////
CBDiskFile::~CBDiskFile() {
Close();
}
//////////////////////////////////////////////////////////////////////////
HRESULT CBDiskFile::Open(Common::String Filename) {
Close();
char FullPath[MAX_PATH];
for (int i = 0; i < Game->_fileManager->_singlePaths.GetSize(); i++) {
sprintf(FullPath, "%s%s", Game->_fileManager->_singlePaths[i], Filename.c_str());
CorrectSlashes(FullPath);
//_file = Common::createFileStream(FullPath);
Common::File *tempFile = new Common::File();
if(tempFile->open(FullPath)) {
_file = tempFile;
} else {
delete tempFile;
}
/* if (_file != NULL) {
error("Tried to open %s, but failed", Filename.c_str());
break;
}*/
}
// if we didn't find it in search paths, try to open directly
if (!_file) {
strcpy(FullPath, Filename.c_str());
CorrectSlashes(FullPath);
//error("Tried to open %s, TODO: add SearchMan-support", Filename.c_str());
//_file = Common::createFileStream(FullPath);
Common::File *tempFile = new Common::File();
if (tempFile->open(FullPath)) {
_file = tempFile;
} else {
delete tempFile;
}
}
if (_file) {
uint32 magic1, magic2;
magic1 = _file->readUint32LE();
magic2 = _file->readUint32LE();
if (magic1 == DCGF_MAGIC && magic2 == COMPRESSED_FILE_MAGIC) _compressed = true;
if (_compressed) {
uint32 DataOffset, CompSize, UncompSize;
DataOffset = _file->readUint32LE();
CompSize = _file->readUint32LE();
UncompSize = _file->readUint32LE();
byte *CompBuffer = new byte[CompSize];
if (!CompBuffer) {
Game->LOG(0, "Error allocating memory for compressed file '%s'", Filename.c_str());
Close();
return E_FAIL;
}
_data = new byte[UncompSize];
if (!_data) {
Game->LOG(0, "Error allocating buffer for file '%s'", Filename.c_str());
delete [] CompBuffer;
Close();
return E_FAIL;
}
_file->seek(DataOffset + _prefixSize, SEEK_SET);
_file->read(CompBuffer, CompSize);
if (uncompress(_data, (uLongf *)&UncompSize, CompBuffer, CompSize) != Z_OK) {
Game->LOG(0, "Error uncompressing file '%s'", Filename.c_str());
delete [] CompBuffer;
Close();
return E_FAIL;
}
delete [] CompBuffer;
_size = UncompSize;
_pos = 0;
delete _file;
_file = NULL;
} else {
_pos = 0;
_file->seek(0, SEEK_END);
_size = _file->pos() - _prefixSize;
_file->seek(_prefixSize,SEEK_SET);
}
return S_OK;
} else return E_FAIL;
}
//////////////////////////////////////////////////////////////////////////
HRESULT CBDiskFile::Close() {
if (_file) {
delete _file;
}
_file = NULL;
_pos = 0;
_size = 0;
delete[] _data;
_data = NULL;
_compressed = false;
return S_OK;
}
//////////////////////////////////////////////////////////////////////////
HRESULT CBDiskFile::Read(void *Buffer, uint32 Size) {
if (_compressed) {
memcpy(Buffer, _data + _pos, Size);
_pos += Size;
return S_OK;
} else {
if (_file) {
size_t count = _file->read(Buffer, Size);
_pos += count;
return S_OK;
} else return E_FAIL;
}
}
//////////////////////////////////////////////////////////////////////////
HRESULT CBDiskFile::Seek(uint32 Pos, TSeek Origin) {
if (_compressed) {
uint32 NewPos = 0;
switch (Origin) {
case SEEK_TO_BEGIN:
NewPos = Pos;
break;
case SEEK_TO_END:
NewPos = _size + Pos;
break;
case SEEK_TO_CURRENT:
NewPos = _pos + Pos;
break;
}
if (NewPos < 0 || NewPos > _size) return E_FAIL;
else _pos = NewPos;
return S_OK;
} else {
if (!_file) return E_FAIL;
int ret = 1;
switch (Origin) {
case SEEK_TO_BEGIN:
ret = _file->seek(_prefixSize + Pos, SEEK_SET);
break;
case SEEK_TO_END:
ret = _file->seek(Pos, SEEK_END);
break;
case SEEK_TO_CURRENT:
ret = _file->seek(Pos, SEEK_CUR);
break;
}
if (ret == 0) {
_pos = _file->pos() - _prefixSize;
return S_OK;
} else return E_FAIL;
}
}
//////////////////////////////////////////////////////////////////////////
void CBDiskFile::CorrectSlashes(char *fileName) {
for (size_t i = 0; i < strlen(fileName); i++) {
if (fileName[i] == '\\') fileName[i] = '/';
}
}
} // end of namespace WinterMute
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