IFF.h

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/*
Copyright (C) 2000  Dancer A.L Vesperman

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.
*/

#ifndef __IFF_H_
#define __IFF_H_

#include <vector>
#include <string>
#include "common_types.h"
#include "U7file.h"


class IFF : public U7file
{
public:
  struct  IFFhdr
  {
    char  form_magic[4];
    uint32  size;
    char  data_type[4];
    IFFhdr() {}
    IFFhdr(const IFFhdr &i) : size(i.size)
    {
      std::memcpy(form_magic,i.form_magic,sizeof(form_magic));
      std::memcpy(data_type,i.data_type,sizeof(data_type));
    }
    IFFhdr &operator=(const IFFhdr &i)
    {
      size=i.size;
      std::memcpy(form_magic,i.form_magic,sizeof(form_magic));
      std::memcpy(data_type,i.data_type,sizeof(data_type));
      return *this;
    }
  };
  struct  IFFobject
  {
    char  type[4];
    uint32  size;
    char  even;
  };
  struct  u7IFFobj
  {
    char  name[8];
    // char    data[]; // Variable
  };
  struct Reference
    {
    uint32  offset;
    uint32  size;
    Reference() : offset(0),size(0) {};
  };

protected:
  IFFhdr  header;
  std::vector<Reference> object_list;

public:
  IFF(const std::string &fname);
  IFF(const IFF &i) : header(i.header),object_list(i.object_list) {}
  IFF operator=(const IFF &i)
  {
    header=i.header;
    object_list=i.object_list;
    return *this;
  }

  // char *read_object(int objnum,uint32 &length);
  virtual uint32    number_of_objects(void) { return object_list.size(); };
  virtual char *    retrieve(uint32 objnum,std::size_t &len); // To a memory block
  virtual const char* get_archive_type() { return "IFF"; };

private:
  IFF(); // No default constructor
  void IndexIFFFile(void);
};


#endif

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