tukaani-project
diff --git a/‎src/org/tukaani/xz/LZMA2Encoder.java‎
Lines changed: 12 additions & 3 deletions b/‎src/org/tukaani/xz/LZMA2Encoder.java‎
Lines changed: 12 additions & 3 deletions
@@ -10,17 +10,26 @@
 package org.tukaani.xz;
 
 import java.io.OutputStream;
+import org.tukaani.xz.lzma.LZMAEncoder;
 
 class LZMA2Encoder extends LZMA2Coder implements FilterEncoder {
     private LZMA2Options options;
     private byte[] props = new byte[1];
 
     LZMA2Encoder(LZMA2Options options) {
-        // Make a private copy so that the caller is free to change its copy.
-        this.options = (LZMA2Options)options.clone();
+        if (options.getPresetDict() != null)
+            throw new IllegalArgumentException(
+                    "XZ doesn't support a preset dictionary for now");
 
-        // TODO: Props!!!
+        if (options.getMode() == LZMA2Options.MODE_UNCOMPRESSED) {
+            props[0] = (byte)0;
+        } else {
+            int d = Math.max(options.getDictSize(), options.DICT_SIZE_MIN);
+            props[0] = (byte)(LZMAEncoder.getDistSlot(d - 1) - 23);
+        }
 
+        // Make a private copy so that the caller is free to change its copy.
+        this.options = (LZMA2Options)options.clone();
     }
 
     public long getFilterID() {