pc-tools/ldc2/src/discard_block.hh

   1 #ifndef DISCARD_BLOCK_H
   2 #define DISCARD_BLOCK_H
   3
   4 #include <string>
   5 #include <vector>
   6
   7 #include "tape_block.hh"
   8
   9 using namespace std;
  10
  11 /*!
  12  *\brief Class representating an invalid block.
  13  *
  14  *Reasons for a block to be invalid are:\n
  15  * - EOF on fd used to initialise,
  16  * - Checksum error in a block
  17  * - IO error while reading from fd
  18  * The reason for the block to be a discard_block can be
  19  * resolved by using get_state().
  20  */
  21 class discard_block
  22   :public tape_block
  23 {
  24   friend tape_block* tape_block::gen_from_fd(int,void(*)(void*),
  25                                              void(*)(void*),void*);
  26 public: // methods
  27   discard_block(discard_block &);
  28   virtual vector<string> get_description();
  29
  30 discard_block(tape_block &);
  31 private:   // methods
  32
  33   discard_block();
  34
  35 }; // class discard_block
  36
  37
  38 #endif