正则表达式工具类

// --------------------------------------------------------------------------------------------------------------------
// <copyright file="TouTouRegex.cs" owner="TouTou">
//   Copyright (c) TouTou Owner. All rights reserved.
// </copyright>
// --------------------------------------------------------------------------------------------------------------------

namespace TouTou.RegexTool
{
using System.Collections.Generic;
using System.Text.RegularExpressions;

/// <summary>
/// 正则表达式工具,满足各种需要使用正则的需求
/// </summary>
public class TouTouRegex
{
/// <summary>
/// 检测字符串中是否包含符合正则的子集
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="reg">正则, e.g. \d+</param>
/// <returns>true:包含，反之不包含</returns>
public bool CheckContainsByReg(string source, string reg)
{
return Regex.Match(source, reg).Success;
}

/// <summary>
/// 检测整个字符串是否能匹配正则,而不是包含
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="reg">正则, e.g. ^\d+$</param>
/// <returns>true:匹配，反之不匹配</returns>
public bool CheckStringByReg(string source, string reg)
{
Regex rg = new Regex(reg, RegexOptions.IgnoreCase);
return rg.IsMatch(source);
}

/// <summary>
/// 从指定字符串中过滤出第一个符合正则匹配的子集
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="reg">正则, e.g. \d+</param>
/// <returns>源字符串的第一个匹配的子集</returns>
public string GetFirstStringByReg(string source, string reg)
{
return Regex.Match(source, reg).Groups[0].Value;
}

/// <summary>
/// 从指定字符串中过滤出所有符合正则匹配的子集
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="reg">正则, e.g. \d+</param>
/// <returns>true:匹配，反之不匹配</returns>
public List<string> GetStringByReg(string source, string reg)
{
var regex = Regex.Matches(source, reg);
List<string> list = new List<string>();
foreach (Match item in regex)
{
list.Add(item.Value);
}

return list;
}

/// <summary>
/// 从指定字符串中过滤出第一个数字
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串的第一个数字</returns>
public string GetFirstNumberByString(string source)
{
return Regex.Match(source, @"\d+").Groups[0].Value;
}

/// <summary>
/// 从指定字符串中过滤出最后一个数字
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串的最后一个数字</returns>
public string GetLastNumberByString(string source)
{
var reg = Regex.Matches(source, @"\d+");
return reg[reg.Count - 1].Value;
}

/// <summary>
/// 从指定字符串中过滤出所有数字
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串的所有数字</returns>
public List<string> GetAllNumberByString(string source)
{
var reg = Regex.Matches(source, @"\d+");
List<string> list = new List<string>();
foreach (Match item in reg)
{
list.Add(item.Value);
}

return list;
}

/// <summary>
/// 检车源字符串中是否包含数字
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>true:源字符串包含数字;false:源字符串不包含数字</returns>
public bool CheckNumberByString(string source)
{
return Regex.Match(source, @"\d").Success;
}

/// <summary>
/// 判断字符串是否全部是数字且长度等于指定长度
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="length">指定长度</param>
/// <returns>返回值</returns>
public bool CheckLengthByString(string source, int length)
{
Regex rg = new Regex(@"^\d{" + length + "}$");
return rg.IsMatch(source);
}

/// <summary>
/// 截取字符串中开始和结束字符串中间的字符串
/// </summary>
/// <param name="source">源字符串</param>
/// <param name="startStr">开始字符串</param>
/// <param name="endStr">结束字符串</param>
/// <returns>中间字符串</returns>
public string Substring(string source, string startStr, string endStr)
{
Regex rg = new Regex("(?<=(" + startStr + "))[.\\s\\S]*?(?=(" + endStr + "))", RegexOptions.Multiline | RegexOptions.Singleline);
return rg.Match(source).Value;
}

/// <summary>
/// 匹配邮箱是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>匹配结果true是邮箱反之不是邮箱</returns>
public bool CheckEmailByString(string source)
{
Regex rg = new Regex("^\\s*([A-Za-z0-9_-]+(\\.\\w+)*@(\\w+\\.)+\\w{2,5})\\s*$", RegexOptions.IgnoreCase);
return rg.IsMatch(source);
}

/// <summary>
/// 匹配URL是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>匹配结果true是URL反之不是URL</returns>
public bool CheckURLByString(string source)
{
Regex rg = new Regex(@"^(https?|s?ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$", RegexOptions.IgnoreCase);
return rg.IsMatch(source);
}

/// <summary>
/// 匹配日期是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>匹配结果true是日期反之不是日期</returns>
public bool CheckDateByString(string source)
{
Regex rg = new Regex(@"^(\d{4}[\/\-](0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31))|((0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31)[\/\-]\d{4})$");
return rg.IsMatch(source);
}

/// <summary>
/// 从字符串中获取第一个日期
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串中的第一个日期</returns>
public string GetFirstDateByString(string source)
{
return Regex.Match(source, @"(\d{4}[\/\-](0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31))|((0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31)[\/\-]\d{4})").Groups[0].Value;
}

/// <summary>
/// 从字符串中获取所有的日期
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串中的所有日期</returns>
public List<string> GetAllDateByString(string source)
{
var all = Regex.Matches(source, @"(\d{4}[\/\-](0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31))|((0?[1-9]|1[0-2])[\/\-]((0?[1-9])|((1|2)[0-9])|30|31)[\/\-]\d{4})");
List<string> list = new List<string>();
foreach (Match item in all)
{
list.Add(item.Value);
}
return list;
}

/// <summary>
/// 检测密码复杂度是否达标：密码中必须包含字母、数字、特称字符，至少8个字符，最多16个字符。
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>密码复杂度是否达标true是达标反之不达标</returns>
public bool CheckPasswordByString(string source)
{
Regex rg = new Regex(@"^(?=.*\d)(?=.*[a-zA-Z])(?=.*[^a-zA-Z0-9]).{8,16}$");
return rg.IsMatch(source);
}

/// <summary>
/// 匹配邮编是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>邮编合法返回true,反之不合法</returns>
public bool CheckPostcodeByString(string source)
{
Regex rg = new Regex(@"^\d{6}$");
return rg.IsMatch(source);
}

/// <summary>
/// 匹配电话号码是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>电话号码合法返回true,反之不合法</returns>
public bool CheckTelephoneByString(string source)
{
Regex rg = new Regex(@"^(\(\d{3,4}-)|\d{3.4}-)?\d{7,8}$");
return rg.IsMatch(source);
}

/// <summary>
/// 从字符串中获取电话号码
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串中电话号码</returns>
public string GetTelephoneByString(string source)
{
return Regex.Match(source, @"(\(\d{3,4}-)|\d{3.4}-)?\d{7,8}").Groups[0].Value;
}

/// <summary>
/// 匹配手机号码是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>手机号码合法返回true,反之不合法</returns>
public bool CheckMobilephoneByString(string source)
{
Regex rg = new Regex(@"^[1]+[3,5]+\d{9}$");
return rg.IsMatch(source);
}

/// <summary>
/// 从字符串中获取手机号码
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串中手机号码</returns>
public string GetMobilephoneByString(string source)
{
return Regex.Match(source, @"[1]+[3,5]+\d{9}").Groups[0].Value;
}

/// <summary>
/// 匹配身份证号码是否合法
/// </summary>
/// <param name="source">待匹配字符串</param>
/// <returns>身份证号码合法返回true,反之不合法</returns>
public bool CheckIDCardByString(string source)
{
Regex rg = new Regex(@"^(^\d{15}$|^\d{18}$|^\d{17}(\d|X|x))$");
return rg.IsMatch(source);
}

/// <summary>
/// 从字符串中获取身份证号码
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>源字符串中身份证号码</returns>
public string GetIDCardByString(string source)
{
return Regex.Match(source, @"(^\d{15}$|^\d{18}$|^\d{17}(\d|X|x))").Groups[0].Value;
}
}
}