1 files changed, 113 insertions, 0 deletions
diff --git a/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/unpack/ppm/State.java b/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/unpack/ppm/State.java
new file mode 100644
index 0000000..ec131f2
--- /dev/null
+++ b/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/unpack/ppm/State.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
+ * Original author: Edmund Wagner
+ * Creation date: 01.06.2007
+ *
+ * Source: $HeadURL$
+ * Last changed: $LastChangedDate$
+ * 
+ * the unrar licence applies to all junrar source and binary distributions 
+ * you are not allowed to use this source to re-create the RAR compression algorithm
+ * 
+ * Here some html entities which can be used for escaping javadoc tags:
+ * "&":  "&#038;" or "&amp;"
+ * "<":  "&#060;" or "&lt;"
+ * ">":  "&#062;" or "&gt;"
+ * "@":  "&#064;" 
+ */
+package org.fox.ttcomics2.junrar.unpack.ppm;
+
+import org.fox.ttcomics2.junrar.io.Raw;
+
+public class State extends Pointer {
+
+    public static final int size = 6;
+
+    public State(byte[] mem) {
+        super(mem);
+    }
+
+    public static void ppmdSwap(State ptr1, State ptr2) {
+        byte[] mem1 = ptr1.mem, mem2 = ptr2.mem;
+        for (int i = 0, pos1 = ptr1.pos, pos2 = ptr2.pos; i < size; i++, pos1++, pos2++) {
+            byte temp = mem1[pos1];
+            mem1[pos1] = mem2[pos2];
+            mem2[pos2] = temp;
+        }
+    }
+
+    public State init(byte[] mem) {
+        this.mem = mem;
+        pos = 0;
+        return this;
+    }
+
+    public int getSymbol() {
+        return mem[pos] & 0xff;
+    }
+
+    public void setSymbol(int symbol) {
+        mem[pos] = (byte) symbol;
+    }
+
+    public int getFreq() {
+        return mem[pos + 1] & 0xff;
+    }
+
+    public void setFreq(int freq) {
+        mem[pos + 1] = (byte) freq;
+    }
+
+    public void incFreq(int dFreq) {
+        mem[pos + 1] += dFreq;
+    }
+
+    public int getSuccessor() {
+        return Raw.readIntLittleEndian(mem, pos + 2);
+    }
+
+    public void setSuccessor(int successor) {
+        Raw.writeIntLittleEndian(mem, pos + 2, successor);
+    }
+
+    public void setSuccessor(PPMContext successor) {
+        setSuccessor(successor.getAddress());
+    }
+
+    public void setValues(StateRef state) {
+        setSymbol(state.getSymbol());
+        setFreq(state.getFreq());
+        setSuccessor(state.getSuccessor());
+    }
+
+    public void setValues(State ptr) {
+        System.arraycopy(ptr.mem, ptr.pos, mem, pos, size);
+    }
+
+    public State decAddress() {
+        setAddress(pos - size);
+        return this;
+    }
+
+    public State incAddress() {
+        setAddress(pos + size);
+        return this;
+    }
+
+    public String toString() {
+        StringBuilder buffer = new StringBuilder();
+        buffer.append("State[");
+        buffer.append("\n  pos=");
+        buffer.append(pos);
+        buffer.append("\n  size=");
+        buffer.append(size);
+        buffer.append("\n  symbol=");
+        buffer.append(getSymbol());
+        buffer.append("\n  freq=");
+        buffer.append(getFreq());
+        buffer.append("\n  successor=");
+        buffer.append(getSuccessor());
+        buffer.append("\n]");
+        return buffer.toString();
+    }
+}