Panda3D
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datagramInputFile.h
00001 // Filename: datagramInputFile.h
00002 // Created by:  drose (30Oct00)
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 DATAGRAMINPUTFILE_H
00016 #define DATAGRAMINPUTFILE_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "datagramGenerator.h"
00021 #include "filename.h"
00022 #include "fileReference.h"
00023 #include "virtualFile.h"
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //       Class : DatagramInputFile
00027 // Description : This class can be used to read a binary file that
00028 //               consists of an arbitrary header followed by a number
00029 //               of datagrams.
00030 ////////////////////////////////////////////////////////////////////
00031 class EXPCL_PANDA_PUTIL DatagramInputFile : public DatagramGenerator {
00032 PUBLISHED:
00033   INLINE DatagramInputFile();
00034   INLINE ~DatagramInputFile();
00035 
00036   bool open(const FileReference *file);
00037   INLINE bool open(const Filename &filename);
00038   bool open(istream &in, const Filename &filename = Filename());
00039   INLINE istream &get_stream();
00040 
00041   void close();
00042 
00043   bool read_header(string &header, size_t num_bytes);
00044   virtual bool get_datagram(Datagram &data);
00045   virtual bool save_datagram(SubfileInfo &info);
00046   virtual bool is_eof();
00047   virtual bool is_error();
00048 
00049   virtual const Filename &get_filename();
00050   virtual const FileReference *get_file();
00051   virtual VirtualFile *get_vfile();
00052   virtual streampos get_file_pos();
00053 
00054 private:
00055   bool _read_first_datagram;
00056   bool _error;
00057   CPT(FileReference) _file;
00058   PT(VirtualFile) _vfile;
00059   istream *_in;
00060   bool _owns_in;
00061   Filename _filename;
00062 };
00063 
00064 #include "datagramInputFile.I"
00065 
00066 #endif
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