Method readBlock

src/main/java/jace/hardware/massStorage/FileNode.java:172–206

(int block, byte[] buffer)

    }

    @Override
    public void readBlock(int block, byte[] buffer) throws IOException {
        allocate();
        int dataBlocks = (int) ((getPhysicalFile().length() + ProdosVirtualDisk.BLOCK_SIZE - 1) / ProdosVirtualDisk.BLOCK_SIZE);
        int treeBlocks = (((dataBlocks * 2) + (ProdosVirtualDisk.BLOCK_SIZE - 2)) / ProdosVirtualDisk.BLOCK_SIZE);
        if (treeBlocks > 1) {
            treeBlocks++;
        }
        switch (this.getType()) {
            case SEEDLING:
                readFile(buffer, 0);
                break;
            case SAPLING:
                if (block > 0) {
                    readFile(buffer, (block - 1));
                } else {
                    // Generate seedling index block
                    generateIndex(buffer, 1, dataBlocks + 1);
                }
                break;
            case TREE:
                if (block == 0) {
                    generateIndex(buffer, 1, treeBlocks);
                } else if (block <= treeBlocks) {
                    int start = treeBlocks + ((block - 1) * 256);
                    int end = treeBlocks + dataBlocks;
                    generateIndex(buffer, start, end);
                } else {
                    readFile(buffer, (block - treeBlocks - 1));
                }
                break;
            default:
                // ignore
        }
    }

    private void readFile(byte[] buffer, int start) throws IOException {
        try (FileInputStream f = new FileInputStream(physicalFile)) {