package NET.worlds.network;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.UTFDataFormatException;

class netData {
   private byte[] _data;
   private int _packetSize;
   private int _offset;

   public netData(DataInputStream in) {
      try {
         this._packetSize = in.readUnsignedByte();
         this._data = new byte[256];
         in.readFully(this._data, 1, this._packetSize - 1);
         this._data[0] = (byte)this._packetSize;
      } catch (Exception var3) {
         this._data = null;
         this._packetSize = 0;
      }

      this._offset = 1;
   }

   public final int packetSize() {
      return this._packetSize;
   }

   public final boolean isEmpty() {
      return this._offset >= this._packetSize;
   }

   public final byte getByte() {
      assert this._offset < this._packetSize;

      return this._data[this._offset++];
   }

   public final short getShort() {
      assert this._offset < this._packetSize;

      assert this._offset + 1 < this._packetSize;

      short retVal = (short)(this._data[this._offset] << 8 | this._data[this._offset + 1] & 255);
      this._offset += 2;
      return retVal;
   }

   public String getUTFString(int utflen) {
      char[] str = new char[utflen];
      int count = 0;
      int strlen = 0;

      try {
         while (count < utflen) {
            int c = this.getByte() & 255;
            switch (c >> 4) {
               case 0:
               case 1:
               case 2:
               case 3:
               case 4:
               case 5:
               case 6:
               case 7:
                  count++;
                  str[strlen++] = (char)c;
                  break;
               case 12:
               case 13:
                  count += 2;
                  if (count > utflen) {
                     throw new UTFDataFormatException();
                  }

                  int char2 = this.getByte() & 255;
                  if ((char2 & 192) != 128) {
                     throw new UTFDataFormatException();
                  }

                  str[strlen++] = (char)((c & 31) << 6 | char2 & 63);
                  break;
               case 14:
                  count += 3;
                  if (count > utflen) {
                     throw new UTFDataFormatException();
                  }

                  char2 = this.getByte() & 255;
                  int char3 = this.getByte() & 255;
                  if ((char2 & 192) != 128 || (char3 & 192) != 128) {
                     throw new UTFDataFormatException();
                  }

                  str[strlen++] = (char)((c & 15) << 12 | (char2 & 63) << 6 | (char3 & 63) << 0);
               case 8:
               case 9:
               case 10:
               case 11:
               default:
                  throw new UTFDataFormatException();
            }
         }
      } catch (IOException var8) {
         System.err.println("Exception: " + var8.getMessage());
         var8.printStackTrace();

         assert false;
      }

      return new String(str, 0, strlen);
   }
}