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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.
*
*/
#include "common/debug.h"
#include "common/file.h"
#include "common/memstream.h"
#include "common/zlib.h"
#include "hdb/hdb.h"
#include "hdb/file-manager.h"
namespace HDB {
FileMan::FileMan() {
_mpcFile = new Common::File;
_dataHeader.id = 0;
_dataHeader.dirSize = 0;
}
FileMan::~FileMan() {
delete _mpcFile;
for (uint i = 0; i < _dir.size(); i++)
delete _dir[i];
}
void FileMan::openMPC(const Common::String &filename) {
if (!_mpcFile->open(filename))
error("FileMan::openMPC(): Error reading the MSD/MPC file %s", filename.c_str());
_dataHeader.id = _mpcFile->readUint32BE();
if (_dataHeader.id == MKTAG('M', 'P', 'C', 'C'))
error("FileMan::openMPC: Compressed MPC File");
else if (_dataHeader.id == MKTAG('M', 'S', 'D', 'U'))
error("FileMan::openMPC: Uncompressed MSD File");
else if (_dataHeader.id != MKTAG('M', 'P', 'C', 'U') && _dataHeader.id != MKTAG('M', 'S', 'D', 'C'))
error("FileMan::openMPC: Invalid MPC/MSD File.");
// read the directory
uint32 offset = _mpcFile->readUint32LE();
_mpcFile->seek((int32)offset);
// Note: The MPC archive format assumes the offset to be uint32,
// but Common::File::seek() takes the offset as int32.
_dataHeader.dirSize = _mpcFile->readUint32LE();
debug(8, "MPCU: Read %d entries", _dataHeader.dirSize);
for (uint32 fileIndex = 0; fileIndex < _dataHeader.dirSize; fileIndex++) {
MPCEntry *dirEntry = new MPCEntry();
for (int i = 0; i < 64; i++)
dirEntry->filename[i] = tolower(_mpcFile->readByte());
dirEntry->offset = _mpcFile->readUint32LE();
dirEntry->length = _mpcFile->readUint32LE();
dirEntry->ulength = _mpcFile->readUint32LE();
dirEntry->type = (DataType)_mpcFile->readUint32LE();
debug(9, "%d: %s off:%d len:%d ulen: %d type: %d", fileIndex, dirEntry->filename, dirEntry->offset, dirEntry->length, dirEntry->ulength, dirEntry->type);
_dir.push_back(dirEntry);
}
}
void FileMan::closeMPC() {
_dir.clear();
_mpcFile->close();
}
void FileMan::seek(int32 offset, int flag) {
_mpcFile->seek(offset, flag);
}
Common::SeekableReadStream *FileMan::findFirstData(const char *string, DataType type, int *length) {
Common::String fileString;
MPCEntry *file = NULL;
char fname[128];
strcpy(fname, string);
char *pDest = strrchr(fname, '.');
if (pDest)
*pDest = '_';
debug(8, "Looking for Data: '%s' <- '%s'", fname, string);
Common::String fnameS(fname);
fnameS.toLowercase();
// Find MPC Entry
for (MPCIterator it = _dir.begin(); it != _dir.end(); it++) {
fileString = (*it)->filename;
if (fileString.equals(fnameS)) {
if ((*it)->type == type) {
file = *it;
break;
} else {
debug(4, "Found Data but type mismatch: '%s', target: %d, found: %d", fnameS.c_str(), type, (*it)->type);
}
}
}
if (file == NULL) {
debug(4, "Couldn't find Data: '%s'", fnameS.c_str());
return NULL;
}
// Load corresponding file into a buffer
_mpcFile->seek(file->offset);
byte *buffer = (byte *)malloc(file->length);
_mpcFile->read(buffer, file->length);
if (length)
*length = file->ulength;
// Return buffer wrapped in a MemoryReadStream, automatically
// uncompressed if it is zlib-compressed
return Common::wrapCompressedReadStream(new Common::MemoryReadStream(buffer, file->length, DisposeAfterUse::YES), file->length);
}
int32 FileMan::getLength(const char *string, DataType type) {
Common::String fileString;
MPCEntry *file = NULL;
char fname[128];
strcpy(fname, string);
char *pDest = strrchr(fname, '.');
if (pDest)
*pDest = '_';
Common::String fnameS(fname);
fnameS.toLowercase();
// Find MPC Entry
for (MPCIterator it = _dir.begin(); it != _dir.end(); it++) {
fileString = (*it)->filename;
if (fileString.contains(fnameS)) {
if ((*it)->type == type) {
file = *it;
break;
}
}
}
if (file == NULL) {
return 0;
}
return file->ulength;
}
int FileMan::getCount(const char *subString, DataType type) {
int count = 0;
Common::String fileString;
Common::String fnameS(subString);
fnameS.toLowercase();
for (MPCIterator it = _dir.begin(); it != _dir.end(); it++) {
fileString = (*it)->filename;
if (fileString.contains(fnameS)) {
if ((*it)->type == type) {
count++;
}
}
}
return count;
}
Common::Array<const char *> *FileMan::findFiles(const char *string, DataType type) {
Common::Array<const char *> *result = new Common::Array<const char *>;
Common::String fileString;
Common::String fnameS(string);
fnameS.toLowercase();
// Find MPC Entry
for (MPCIterator it = _dir.begin(); it != _dir.end(); it++) {
fileString = (*it)->filename;
if (fileString.contains(fnameS)) {
if ((*it)->type == type) {
result->push_back((*it)->filename);
}
}
}
return result;
}
} // End of Namespace HDB
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