start of a command-line filter program

net/contrapunctus/lzma/Command.java

@@ -0,0 +1,25 @@
+package net.contrapunctus.lzma;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.IOException;
+
+public class Command
+{
+    static void copy(InputStream in, OutputStream out) throws IOException
+    {
+        final int BUFSIZE = 4096;
+        byte[] buf = new byte[BUFSIZE];
+        int n = in.read(buf);
+        while(n != -1) {
+            out.write(buf, 0, n);
+            n = in.read(buf);
+        }
+        out.close();
+    }
+
+    public static void main(String[] args) throws IOException
+    {
+        copy(System.in, new LzmaOutputStream(System.out));
+    }
+}