Method CheckedFile

plugins/e57/libE57Format/src/CheckedFile.cpp:183–223

};

CheckedFile::CheckedFile( const ustring &fileName, Mode mode, ReadChecksumPolicy policy ) :
   fileName_( fileName ), checkSumPolicy_( policy )
{
   switch ( mode )
   {
      case Read:
      {
#if defined( _MSC_VER )
         constexpr int readFlags = O_RDONLY | O_BINARY;
#else
         constexpr int readFlags = O_RDONLY;
#endif

         fd_ = open64( fileName_, readFlags, 0 );

         readOnly_ = true;

         physicalLength_ = lseek64( 0LL, SEEK_END );
         lseek64( 0, SEEK_SET );

         logicalLength_ = physicalToLogical( physicalLength_ );
      }
      break;

      case Write:
      {
         // File truncated to zero length if already exists

#if defined( _MSC_VER )
         constexpr int writeFlags = O_RDWR | O_CREAT | O_TRUNC | O_BINARY;
         constexpr int writeMode = S_IREAD | S_IWRITE;
#else
         constexpr int writeFlags = O_RDWR | O_CREAT | O_TRUNC;
         constexpr int writeMode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
#endif

         fd_ = open64( fileName_, writeFlags, writeMode );
      }
      break;
   }
}

CheckedFile::CheckedFile( const char *input, uint64_t size, ReadChecksumPolicy policy ) :
   fileName_( "<StreamBuffer>" ), checkSumPolicy_( policy )