static String unescape()

in src/main/java/org/apache/accumulo/access/AccessEvaluatorImpl.java [59:96]

33 lines of code
9 McCabe index (conditional complexity)


  static String unescape(BytesWrapper auth) {
    int escapeCharCount = 0;
    for (int i = 0; i < auth.length(); i++) {
      byte b = auth.byteAt(i);
      if (isQuoteOrSlash(b)) {
        escapeCharCount++;
      }
    }

    if (escapeCharCount > 0) {
      if (escapeCharCount % 2 == 1) {
        throw new IllegalArgumentException("Illegal escape sequence in auth : " + auth);
      }

      byte[] unescapedCopy = new byte[auth.length() - escapeCharCount / 2];
      int pos = 0;
      for (int i = 0; i < auth.length(); i++) {
        byte b = auth.byteAt(i);
        if (b == BACKSLASH) {
          i++;
          b = auth.byteAt(i);
          if (!isQuoteOrSlash(b)) {
            throw new IllegalArgumentException("Illegal escape sequence in auth : " + auth);
          }
        } else if (isQuoteSymbol(b)) {
          // should only see quote after a slash
          throw new IllegalArgumentException(
              "Illegal character after slash in auth String : " + auth);
        }

        unescapedCopy[pos++] = b;
      }

      return new String(unescapedCopy, UTF_8);
    } else {
      return auth.toString();
    }
  }