static String renderStringUnquotedIfPossible()

in scripts/src/main/java/com/gu/typesafe/config/impl/ConfigImplUtil.java [78:102]

• 21 lines of code
• 15 McCabe index (conditional complexity)

    static String renderStringUnquotedIfPossible(String s) {
        // this can quote unnecessarily as long as it never fails to quote when
        // necessary
        if (s.length() == 0)
            return renderJsonString(s);

        // if it starts with a hyphen or number, we have to quote
        // to ensure we end up with a string and not a number
        int first = s.codePointAt(0);
        if (Character.isDigit(first) || first == '-')
            return renderJsonString(s);

        if (s.startsWith("include") || s.startsWith("true") || s.startsWith("false")
                || s.startsWith("null") || s.contains("//"))
            return renderJsonString(s);

        // only unquote if it's pure alphanumeric
        for (int i = 0; i < s.length(); ++i) {
            char c = s.charAt(i);
            if (!(Character.isLetter(c) || Character.isDigit(c) || c == '-'))
                return renderJsonString(s);
        }

        return s;
    }