src/bin/makeudfimage/DataStream.h

   1 //----------------------------------------------------------------------
   2 //  This software is part of the OpenBeOS distribution and is covered
   3 //  by the MIT License.
   4 //
   5 //  Copyright (c) 2003 Tyler Dauwalder, tyler@dauwalder.net
   6 //----------------------------------------------------------------------
   7
   8 /*! \file DataStream.h
   9 */
  10
  11 #ifndef _DATA_STREAM_H
  12 #define _DATA_STREAM_H
  13
  14 #include <DataIO.h>
  15
  16 class DataStream : public BPositionIO {
  17 public:
  18         virtual status_t InitCheck() const = 0;
  19
  20         virtual ssize_t Read(void *buffer, size_t size) = 0;
  21         virtual ssize_t ReadAt(off_t pos, void *buffer, size_t size) = 0;
  22
  23         virtual ssize_t Write(const void *buffer, size_t size) = 0;
  24         virtual ssize_t WriteAt(off_t pos, const void *buffer, size_t size) = 0;
  25
  26         virtual ssize_t Write(BDataIO &data, size_t size) = 0;
  27         virtual ssize_t WriteAt(off_t pos, BDataIO &data, size_t size) = 0;
  28
  29         virtual ssize_t Zero(size_t size) = 0;
  30         virtual ssize_t ZeroAt(off_t pos, size_t size) = 0;
  31
  32         virtual off_t Seek(off_t position, uint32 seek_mode) = 0;
  33         virtual off_t Position() const = 0;
  34
  35         virtual status_t SetSize(off_t size) = 0;
  36 };
  37
  38 #endif  // _DATA_STREAM_H