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resource.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003-2004 The ScummVM project
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/queen/resource.h,v 1.40 2004/08/06 17:01:58 cyx Exp $
 *
 */

#ifndef QUEENRESOURCE_H
#define QUEENRESOURCE_H

#include "common/file.h"
#include "common/util.h"
#include "queen/defs.h"

namespace Queen {

enum Version {
      VER_ENG_FLOPPY   = 0,
      VER_ENG_TALKIE   = 1,
      VER_FRE_FLOPPY   = 2,
      VER_FRE_TALKIE   = 3,
      VER_GER_FLOPPY   = 4,
      VER_GER_TALKIE   = 5,
      VER_ITA_FLOPPY   = 6,
      VER_ITA_TALKIE   = 7,
      VER_SPA_TALKIE   = 8,
      VER_HEB_TALKIE     = 9,
      VER_DEMO_PCGAMES = 10,
      VER_DEMO         = 11,
      VER_INTERVIEW    = 12,

      VER_COUNT        = 13
};

enum { CURRENT_TBL_VERSION = 1 }; 

struct ResourceEntry {
      char filename[13];
      uint8 bundle;
      uint32 offset;
      uint32 size;
};

struct GameVersion {
      char versionString[6];
      uint32 tableOffset;
      uint32 dataFileSize;
};

class LineReader {

public:
      LineReader(char *buffer, uint32 bufsize);
      ~LineReader();
      char *nextLine();

private:
      char *_buffer;
      uint32 _bufSize;
      int _current;
};

class Resource {

public:
      Resource();
      ~Resource();

      uint8 *loadFile(const char *filename, uint32 skipBytes = 0, uint32 *size = NULL, bool useMalloc = false);
      bool fileExists(const char *filename) const { return resourceEntry(filename) != NULL; }

      File *giveCompressedSound(const char *filename, uint32 *size);

      bool isDemo() const { return !strcmp(_versionString, "PE100"); }
      bool isInterview() const { return !strcmp(_versionString, "PEint"); }
      bool isFloppy() const { return _versionString[0] == 'P'; }
      bool isCD() const { return _versionString[0] == 'C'; }
      uint8 compression() const { return _compression; }
      const char *JASVersion() const { return _versionString; }
      Language getLanguage() const;

      enum {
            JAS_VERSION_OFFSET_DEMO = 0x119A8,
            JAS_VERSION_OFFSET_INTV = 0xCF8,
            JAS_VERSION_OFFSET      = 0x12484
      };

protected:
      File *_resourceFile;
      uint8 _compression;
      char _versionString[6];
      uint32 _resourceEntries;
      ResourceEntry *_resourceTable;

      bool findNormalVersion();
      bool findCompressedVersion();
      void checkJASVersion();
      ResourceEntry *resourceEntry(const char *filename) const;
      bool readTableFile(const GameVersion *gameVersion);
      void readTableCompResource();
      void readTableEntries(File *file);
      const GameVersion *detectGameVersion(uint32 size) const;

      static const char *_tableFilename;
      static const GameVersion _gameVersions[];
#ifndef __PALM_OS__
      static ResourceEntry _resourceTablePEM10[];
#endif
};

} // End of namespace Queen

#endif

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