public static Long formatLong()

in src/main/java/org/apache/commons/validator/GenericTypeValidator.java [393:416]

• 20 lines of code
• 7 McCabe index (conditional complexity)

    public static Long formatLong(final String value, final Locale locale) {
        Long result = null;

        if (value != null) {
            NumberFormat formatter = null;
            if (locale != null) {
                formatter = NumberFormat.getNumberInstance(locale);
            } else {
                formatter = NumberFormat.getNumberInstance(Locale.getDefault());
            }
            formatter.setParseIntegerOnly(true);
            final ParsePosition pos = new ParsePosition(0);
            final Number num = formatter.parse(value, pos);

            // If there was no error      and we used the whole string
            if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length() &&
                    num.doubleValue() >= Long.MIN_VALUE &&
                    num.doubleValue() <= Long.MAX_VALUE) {
                result = Long.valueOf(num.longValue());
            }
        }

        return result;
    }