package com.sinata.appointment.util;

public final class PhoneNormalize {

    private PhoneNormalize() {}

    /** 大陆手机号比较用：去空格、去 +86/86 前缀 */
    public static String mainland(String raw) {
        if (raw == null) {
            return "";
        }
        String s = raw.replaceAll("\\s+", "");
        if (s.startsWith("+86")) {
            s = s.substring(3);
        } else if (s.startsWith("86") && s.length() == 13) {
            s = s.substring(2);
        }
        return s;
    }
}