using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace CSharpUtil.Text
{
    /// <summary>
    /// 正则表达式工具类,集合了一些常见表达式. 内建了表达式缓存. 避免每次使用重新编译.
    /// author:gwang
    /// </summary>
    public class RegHelper
    {
        #region '   构造函数   '

        private RegHelper()
        {
        }
        static Dictionary<string, Regex> cache = new Dictionary<string, Regex>();
        static Regex GetRegex(string name, string patrn, RegexOptions opts = RegexOptions.None)
        {
            if (!cache.ContainsKey(name))
            {
                cache.Add(name, new Regex(patrn, opts));
            }
            return cache[name];
        }

        #endregion

        #region '    方法    '

        /// <summary>
        /// 校验登录名：只能输入5-20个以字母开头、可带数字、“_”、“.”的字串
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        static public bool isRegisterUserName(string s)
        {
            const string rname = "RegisterUserName";
            const string patrn = @"^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,19}$";
            Regex re = GetRegex(rname, patrn);
            return re.IsMatch(s);
        }
        /// <summary>
        /// 校验玩家昵称: 只能输入5到10个汉字或者数字、英文字母
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        static public bool isNickName(string s)
        {
            const string rname = "NickName";
            const string patrn = @"^[a-zA-Z0-9_\u4e00-\u9fa5]{4,9}$";
            Regex re = GetRegex(rname, patrn);
            return re.IsMatch(s);
        }
        /// <summary>
        /// 电话号码-固机(010/0311-1234567(8))
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        static public bool isTellNumber(string s)
        {
            const string rname = "TellNumber";
            const string patrn = @"^((d{3,4})|d{3,4}-)?d{7,8}$";
            Regex re = GetRegex(rname, patrn);
            return re.IsMatch(s);
        }
        /// <summary>
        /// 电话号码-手机号(国内)
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        static public bool isCellPhoneNumber(string s)
        {
            const string rname = "TellNumber";
            const string patrn = @"^0?(13|14|15|18)[0-9]{9}$";
            Regex re = GetRegex(rname, patrn);
            return re.IsMatch(s);
        }
        #endregion

    }
}