Now can download .pack.xz file for Forge library.

HMCLAPI/src/main/java/org/tukaani/xz/BCJOptions.java

@@ -0,0 +1,57 @@
+/*
+ * BCJOptions
+ *
+ * Author: Lasse Collin <lasse.collin@tukaani.org>
+ *
+ * This file has been put into the public domain.
+ * You can do whatever you want with this file.
+ */
+
+package org.tukaani.xz;
+
+abstract class BCJOptions extends FilterOptions {
+    private final int alignment;
+    int startOffset = 0;
+
+    BCJOptions(int alignment) {
+        this.alignment = alignment;
+    }
+
+    /**
+     * Sets the start offset for the address conversions.
+     * Normally this is useless so you shouldn't use this function.
+     * The default value is <code>0</code>.
+     */
+    public void setStartOffset(int startOffset)
+            throws UnsupportedOptionsException {
+        if ((startOffset & (alignment - 1)) != 0)
+            throw new UnsupportedOptionsException(
+                    "Start offset must be a multiple of " + alignment);
+
+        this.startOffset = startOffset;
+    }
+
+    /**
+     * Gets the start offset.
+     */
+    public int getStartOffset() {
+        return startOffset;
+    }
+
+    public int getEncoderMemoryUsage() {
+        return SimpleOutputStream.getMemoryUsage();
+    }
+
+    public int getDecoderMemoryUsage() {
+        return SimpleInputStream.getMemoryUsage();
+    }
+
+    public Object clone() {
+        try {
+            return super.clone();
+        } catch (CloneNotSupportedException e) {
+            assert false;
+            throw new RuntimeException();
+        }
+    }
+}