1 files changed, 76 insertions, 0 deletions
diff --git a/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/rarfile/FileNameDecoder.java b/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/rarfile/FileNameDecoder.java
new file mode 100644
index 0000000..999ad39
--- /dev/null
+++ b/org.fox.ttcomics/src/main/java/org/fox/ttcomics2/junrar/rarfile/FileNameDecoder.java
@@ -0,0 +1,76 @@
+/*
+ * 
+ * Original author: alpha_lam
+ * Creation date: ?
+ *
+ * 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.rarfile;
+
+public class FileNameDecoder {
+    public static int getChar(byte[] name, int pos) {
+        return name[pos] & 0xff;
+    }
+
+    public static String decode(byte[] name, int encPos) {
+        int decPos = 0;
+        int flags = 0;
+        int flagBits = 0;
+
+        int low = 0;
+        int high = 0;
+        int highByte = getChar(name, encPos++);
+        StringBuffer buf = new StringBuffer();
+        while (encPos < name.length) {
+            if (flagBits == 0) {
+                flags = getChar(name, encPos++);
+                flagBits = 8;
+            }
+            switch (flags >> 6) {
+                case 0:
+                    buf.append((char) (getChar(name, encPos++)));
+                    ++decPos;
+                    break;
+                case 1:
+                    buf.append((char) (getChar(name, encPos++) + (highByte << 8)));
+                    ++decPos;
+                    break;
+                case 2:
+                    low = getChar(name, encPos);
+                    high = getChar(name, encPos + 1);
+                    buf.append((char) ((high << 8) + low));
+                    ++decPos;
+                    encPos += 2;
+                    break;
+                case 3:
+                    int length = getChar(name, encPos++);
+                    if ((length & 0x80) != 0) {
+                        int correction = getChar(name, encPos++);
+                        for (length = (length & 0x7f) + 2; length > 0 && decPos < name.length; length--, decPos++) {
+                            low = (getChar(name, decPos) + correction) & 0xff;
+                            buf.append((char) ((highByte << 8) + low));
+                        }
+                    } else {
+                        for (length += 2; length > 0 && decPos < name.length; length--, decPos++) {
+                            buf.append((char) (getChar(name, decPos)));
+                        }
+                    }
+                    break;
+            }
+            flags = (flags << 2) & 0xff;
+            flagBits -= 2;
+        }
+        return buf.toString();
+    }
+}