diff options
Diffstat (limited to 'org.fox.ttcomics/src/main/java/com/github/junrar/unpack/ppm/State.java')
| -rw-r--r-- | org.fox.ttcomics/src/main/java/com/github/junrar/unpack/ppm/State.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/ppm/State.java b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/ppm/State.java new file mode 100644 index 0000000..812fb40 --- /dev/null +++ b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/ppm/State.java @@ -0,0 +1,119 @@ +/*
+ * 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:
+ * "&": "&" or "&"
+ * "<": "<" or "<"
+ * ">": ">" or ">"
+ * "@": "@"
+ */
+package com.github.junrar.unpack.ppm;
+
+import com.github.junrar.io.Raw;
+
+/**
+ * DOCUMENT ME
+ *
+ * @author $LastChangedBy$
+ * @version $LastChangedRevision$
+ */
+public class State extends Pointer {
+
+ public static final int size = 6;
+
+ public State(byte[] mem) {
+ super(mem);
+ }
+
+ 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(PPMContext successor) {
+ setSuccessor(successor.getAddress());
+ }
+
+ public void setSuccessor(int successor) {
+ Raw.writeIntLittleEndian(mem, pos + 2, successor);
+ }
+
+ 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 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 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();
+ }
+}
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