private Format checkSpecialConverter(String dataFormatString) {
        if ("00000\\-0000".equals(dataFormatString) || "00000-0000".equals(dataFormatString)) {
            return new ZipPlusFourFormat();
        }
        if ("[<=9999999]###\\-####;\\(###\\)\\ ###\\-####".equals(dataFormatString)
            || "[<=9999999]###-####;(###) ###-####".equals(dataFormatString)
            || "###\\-####;\\(###\\)\\ ###\\-####".equals(dataFormatString)
            || "###-####;(###) ###-####".equals(dataFormatString)) {
            return new PhoneFormat();
        }
        if ("000\\-00\\-0000".equals(dataFormatString) || "000-00-0000".equals(dataFormatString)) {
            return new SSNFormat();
        }
        return null;
    }
Creates a formatter using the given locale.
fastexcel-core/src/main/java/cn/idev/excel/metadata/format/DataFormatter.java