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package com.upokecenter.text;

  final class ByteData {
    private byte[] array;

    public static ByteData Decompress(byte[] data) {
      return new ByteData(Lz4.Decompress(data));
    }

    public ByteData (byte[] array) {
      this.array = array;
    }

    public boolean GetBoolean(int cp) {
      if (cp < 0) {
        throw new IllegalArgumentException("cp (" + cp + ") is less than " + "0");
      }
      if (cp > 0x10ffff) {
     throw new IllegalArgumentException("cp (" + cp + ") is more than " + 0x10ffff);
      }
      int b = this.array[cp >> 13] & 0xff;
      switch (b) {
        case 0xfe: return false;
        case 0xff: return true;
        default: {
            int t = cp & 8191;
            int index = 136 + (b << 10) + (t >> 3);
            return (this.array[index] & (1 << (t & 7))) > 0;
          }
      }
    }

    public byte GetByte(int cp) {
      if (cp < 0) {
        throw new IllegalArgumentException("cp (" + cp + ") is less than " + "0");
      }
      if (cp > 0x10ffff) {
     throw new IllegalArgumentException("cp (" + cp + ") is more than " + 0x10ffff);
      }
      int index = (cp >> 9) << 1;
      int x = this.array[index + 1];
      if ((x & 0x80) != 0) {  // Indicates a default value.
        return this.array[index];
      }
      // Indicates an array block.
x = (x << 8) | (((int)this.array[index]) & 0xff);
      index = 0x1100 + (x << 9) + (cp & 511);
      return this.array[index];
    }
  }