using System.Text.RegularExpressions;

namespace Ant.Service.Common
{
    /// <summary>
    /// 操作正则表达式的公共类
    /// </summary>    
    public class RegexHelper
    {
        #region 验证输入字符串是否与模式字符串匹配
        /// <summary>
        /// 验证输入字符串是否与模式字符串匹配，匹配返回true
        /// </summary>
        /// <param name="input">输入字符串</param>
        /// <param name="pattern">模式字符串</param>        
        public static bool IsMatch(string input, string pattern)
        {
            return IsMatch(input, pattern, RegexOptions.IgnoreCase);
        }

        /// <summary>
        /// 验证输入字符串是否与模式字符串匹配，匹配返回true
        /// </summary>
        /// <param name="input">输入的字符串</param>
        /// <param name="pattern">模式字符串</param>
        /// <param name="options">筛选条件</param>
        public static bool IsMatch(string input, string pattern, RegexOptions options)
        {
            return Regex.IsMatch(input, pattern, options);
        }

        /// <summary>
        /// 判断邮箱是否合法
        /// </summary>
        /// <param name="email"></param>
        /// <returns></returns>
        bool IsEmail(string email)
        {
            Regex regex = new Regex("^\\s*([A-Za-z0-9_-]+(\\.\\w+)*@(\\w+\\.)+\\w{2,5})\\s*$", RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);
            //var regex = new Regex(@"^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$", RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);
            return regex.IsMatch(email);
        }

        #endregion
    }
}