mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-14 05:38:56 +00:00
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/* 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.
|
|
*
|
|
*/
|
|
#include "dragons/bigfile.h"
|
|
#include "dragons/dragons.h"
|
|
|
|
namespace Dragons {
|
|
|
|
uint32 BigfileArchive::getResourceId(const char *filename) {
|
|
for (uint32 i = 0; i < _totalRecords; i++) {
|
|
if (scumm_stricmp(_fileInfoTbl[i].filename.c_str(), filename) == 0) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return _totalRecords;
|
|
}
|
|
|
|
BigfileArchive::BigfileArchive(DragonsEngine *vm, const char *filename) :_vm(vm), _fd(nullptr) {
|
|
_fd = new Common::File();
|
|
if (!_fd->open(filename)) {
|
|
error("BigfileArchive::BigfileArchive() Could not open %s", filename);
|
|
}
|
|
|
|
_totalRecords = _vm->getBigFileTotalRecords();
|
|
_fileInfoTbl.resize(_totalRecords);
|
|
|
|
loadFileInfoTbl();
|
|
}
|
|
|
|
BigfileArchive::~BigfileArchive() {
|
|
_fd->close();
|
|
delete _fd;
|
|
}
|
|
|
|
void BigfileArchive::loadFileInfoTbl() {
|
|
char filename[16];
|
|
Common::File fd;
|
|
if (!fd.open("dragon.exe")) {
|
|
error("Failed to open dragon.exe");
|
|
}
|
|
|
|
fd.seek(_vm->getBigFileInfoTblFromDragonEXE());
|
|
|
|
for (int i = 0; i < _totalRecords; i++) {
|
|
fd.read(filename, 16);
|
|
filename[15] = 0;
|
|
_fileInfoTbl[i].filename = filename;
|
|
_fileInfoTbl[i].offset = fd.readUint32LE() * 2048;
|
|
_fileInfoTbl[i].size = fd.readUint32LE();
|
|
fd.skip(4);
|
|
}
|
|
}
|
|
|
|
byte *BigfileArchive::load(const char *filename, uint32 &dataSize) {
|
|
uint32 id = getResourceId(filename);
|
|
if (id >= _totalRecords) {
|
|
error("Invalid resourceID for input filename: %s", filename);
|
|
}
|
|
|
|
dataSize = _fileInfoTbl[id].size;
|
|
_fd->seek(_fileInfoTbl[id].offset);
|
|
byte *buf = (byte *)malloc(dataSize);
|
|
if (!buf) {
|
|
error("Failed to malloc %d bytes for '%s'", dataSize, filename);
|
|
}
|
|
_fd->read(buf, dataSize);
|
|
return buf;
|
|
}
|
|
|
|
bool BigfileArchive::doesFileExist(const char *filename) {
|
|
uint32 id = getResourceId(filename);
|
|
return (id < _totalRecords);
|
|
}
|
|
|
|
|
|
} // End of namespace Dragons
|