Panda3D

pnmFileTypeRegistry.h

00001 // Filename: pnmFileTypeRegistry.h
00002 // Created by:  drose (15Jun00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef PNMFILETYPEREGISTRY_H
00016 #define PNMFILETYPEREGISTRY_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "typedObject.h"
00021 #include "pmap.h"
00022 #include "pvector.h"
00023 
00024 class PNMFileType;
00025 
00026 ////////////////////////////////////////////////////////////////////
00027 //       Class : PNMFileTypeRegistry
00028 // Description : This class maintains the set of all known
00029 //               PNMFileTypes in the universe.
00030 ////////////////////////////////////////////////////////////////////
00031 class EXPCL_PANDA_PNMIMAGE PNMFileTypeRegistry {
00032 protected:
00033   PNMFileTypeRegistry();
00034 
00035 public:
00036   ~PNMFileTypeRegistry();
00037 
00038   void register_type(PNMFileType *type);
00039 
00040 PUBLISHED:
00041   int get_num_types() const;
00042   PNMFileType *get_type(int n) const;
00043   MAKE_SEQ(get_types, get_num_types, get_type);
00044 
00045   PNMFileType *get_type_from_extension(const string &filename) const;
00046   PNMFileType *get_type_from_magic_number(const string &magic_number) const;
00047   PNMFileType *get_type_by_handle(TypeHandle handle) const;
00048 
00049   void write(ostream &out, int indent_level = 0) const;
00050 
00051   static PNMFileTypeRegistry *get_global_ptr();
00052 
00053 private:
00054   void sort_preferences();
00055 
00056   typedef pvector<PNMFileType *> Types;
00057   Types _types;
00058 
00059   typedef pmap<string, Types> Extensions;
00060   Extensions _extensions;
00061 
00062   typedef pmap<TypeHandle, PNMFileType *> Handles;
00063   Handles _handles;
00064 
00065   bool _requires_sort;
00066 
00067   static PNMFileTypeRegistry *_global_ptr;
00068 };
00069 
00070 #endif
00071 
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