@Override
    public int read(char[] cbuf, int off, int len) {
      if ((off < 0) || (off > cbuf.length) || (len < 0) || ((off + len) > cbuf.length) || ((off + len) < 0)) {
        throw new IndexOutOfBoundsException();
      } else if (len == 0) {
        return 0;
      }

      if (myText instanceof CharArrayCharSequence) { // Optimization
        final int readChars = ((CharArrayCharSequence)myText).readCharsTo(myCurPos, cbuf, off, len);
        if (readChars < 0) return -1;
        myCurPos += readChars;
        return readChars;
      }

      int charsToCopy = Math.min(len, myEndOffset - myCurPos);
      if (charsToCopy <= 0) return -1;

      for (int n = 0; n < charsToCopy; n++) {
        cbuf[n + off] = myText.charAt(n + myCurPos);
      }

      myCurPos += charsToCopy;
      return charsToCopy;
    }
@Override
    public int read(char[] cbuf, int off, int len)