Function ProDOS_BlockGetFirstFree

source/ProDOS_FileSystem.h:233–260

------------------------------------------------------------------------

	// ------------------------------------------------------------------------
	int ProDOS_BlockGetFirstFree ( uint8_t *pDiskBytes, size_t nDiskSize, ProDOS_VolumeHeader_t *pVolume )
	{
		if( !pVolume )
		{
			return 0;
		}

		int bitmap = pVolume->meta.bitmap_block;
		int offset = bitmap * PRODOS_BLOCK_SIZE;
		const size_t size = (nDiskSize + 7) / 8;
		int block  = 0;

		for( int byte = 0; byte < size; byte++ )
		{
			int mask = 0x80;
			do
			{
				if( pDiskBytes[ offset + byte ] & mask )
					return block;

				mask >>= 1;
				block++;
			}
			while( mask );
		}

		return 0;
	}

	// ------------------------------------------------------------------------
	int ProDOS_BlockGetPathOffset ( uint8_t *pDiskBytes, ProDOS_VolumeHeader_t *pVolume, const char *pProDOSPath )