void Open()
{
int mode = GetOpenMode();
int siz = GetFileSize();
if(siz == -1){
if(Mode == MMapMode::READ)
throw MMapException("can't find file", path_);
else
mode |= O_CREAT;
siz = 0;
}
size_ = size_ <= 0 ? siz : size_;
if((fd_=::open(path_, mode, 0644))== -1){
throw MMapException("open", path_);
}
if(static_cast<int>(size_ + offset_) > siz){
if(Mode == MMapMode::READ){
size_ = std::max(siz - offset_ ,0UL);
}else{
ExpandFile();
}
}
}
int main(int argc, char *argv[])
{
FILE *output;
BIT_FILE *input;
setbuf( stdout, NULL );
if ( argc < 3 )
usage_exit( argv[ 0 ] );
input = OpenInputBitFile( argv[ 1 ] );
if ( input == NULL )
fatal_error( "Error opening %s for input\n", argv[ 1 ]);
output = fopen( argv[ 2 ], "wb" );
if ( output == NULL )
fatal_error( "Error opening %s for output\n", argv[ 2 ]);
printf( "\nExpanding %s to %s\n", argv[ 1 ], argv[ 2 ] );
printf( "Using %s\n", CompressionName );
argc -= 3;
argv += 3;
ExpandFile( input, output, argc, argv );
CloseInputBitFile( input );
fclose( output );
putc( '\n', stdout );
return( 0 );
}