abf/reader-DGST.h

   1 #ifndef AWFUL_ABF_READER_DGST_H
   2 #define AWFUL_ABF_READER_DGST_H
   3
   4 namespace awful { namespace abf
   5 {
   6         template< class EndianessPolicy > bool BaseReader< EndianessPolicy >::
   7                 ReadDGST( buffered_stream_type& Stream )
   8         {
   9                 const char dgst[] = { 'D', 'G', 'S', 'T' };
  10                 char chunkid[4];
  11
  12                 Stream.read( chunkid, sizeof( chunkid ) );
  13
  14                 while( memcmp( dgst, chunkid, sizeof( chunkid ) ) )
  15                 {
  16                         uint32_t size = Stream.readU32();
  17                         Stream.seek( Stream.tell() + size );
  18                         if( Stream.read( chunkid, sizeof( chunkid ) ) != sizeof( chunkid ) )
  19                         {
  20                                 // TODO: throw
  21                                 std::cout << "ABF reader: DGST chunk not found\n";
  22                         }
  23                 }
  24
  25                 uint32_t size = Stream.readU32();
  26                 bool bDigestCheckOk = true;
  27
  28                 while( size )
  29                 {
  30                         uint64_t digest = Stream.readU64();
  31                         bDigestCheckOk = bDigestCheckOk && Impl::Digests.find( digest ) != Impl::Digests.end();
  32                         size -= 8;
  33                 }
  34
  35                 return bDigestCheckOk;
  36         }
  37 }}
  38
  39 #endif