public static boolean isValidPackageName()

in src/main/java/org/apache/bsf/util/StringUtils.java [337:378]

• 30 lines of code
• 9 McCabe index (conditional complexity)

  public static boolean isValidPackageName(final String packageName)
  {
    if (packageName == null) {
        return false;
    } else if (packageName.length() == 0) {
        // Empty is ok.
          return true;
    }

    final StringTokenizer strTok = new StringTokenizer(packageName, ".", true);

    // Should have an odd number of tokens (including '.' delimiters).
    if (strTok.countTokens() % 2 != 1) {
        return false;
    }

    // Must start with a valid identifier name.
    if (!isValidIdentifierName(strTok.nextToken())) {
        return false;
    }

    // ... followed by 0 or more of ".ValidIdentifier".
    while (strTok.hasMoreTokens())
    {
      // Must be a '.'.
      if (!strTok.nextToken().equals(".")) {
        return false;
    }

      // Must be a valid identifier name.
      if (strTok.hasMoreTokens())
      {
        if (!isValidIdentifierName(strTok.nextToken())) {
            return false;
        }
      } else {
        return false;
    }
    }

    return true;
  }