bool WRCopyResFromFileToFile( WResFileID src_fid, uint_32 offset, uint_32 length, WResFileID dst_fid )
{
uint_32 size;
uint_8 *buf;
bool ok;
size = 0;
buf = NULL;
ok = (src_fid != WRES_NIL_HANDLE && dst_fid != WRES_NIL_HANDLE);
ok = (ok && (buf = (uint_8 *)MemAlloc( CHUNK_SIZE )) != NULL);
ok = (ok && RESSEEK( src_fid, offset, SEEK_SET ) != -1);
while( ok && length - size > CHUNK_SIZE ) {
ok = ok && WRReadResData( src_fid, (BYTE *)buf, CHUNK_SIZE );
ok = ok && WRWriteResData( dst_fid, (BYTE *)buf, CHUNK_SIZE );
size += CHUNK_SIZE;
}
ok = ok && WRReadResData( src_fid, (BYTE *)buf, length - size );
ok = ok && WRWriteResData( dst_fid, (BYTE *)buf, length - size );
if( buf != NULL ) {
MemFree( buf );
}
return( ok );
}
void * WRAPI WRLoadResData( char *file, uint_32 offset, uint_32 length )
{
void *data;
WResFileID handle;
int ok;
data = NULL;
handle = -1;
ok = (file != NULL && length != 0);
if( ok ) {
ok = ((data = WRMemAlloc( length )) != NULL);
}
if( ok ) {
ok = ((handle = ResOpenFileRO( file )) != -1);
}
if( ok ) {
ok = ((ResSeek( handle, offset, SEEK_SET )) != -1);
}
if( ok ) {
ok = WRReadResData( handle, (BYTE *)data, length );
}
if( handle != -1 ) {
ResCloseFile( handle );
}
if( !ok ) {
if( data != NULL ) {
WRMemFree( data );
data = NULL;
}
}
return( data );
}