using System;
using System.Text.RegularExpressions;
namespace MetarCommonSupport
{
/// <summary>
/// 通过Framwork类库中的Regex类实现了一些特殊功能数据检查
/// </summary>
public class MetarnetRegex
{
private static MetarnetRegex instance = null;
public static MetarnetRegex GetInstance()
{
if(MetarnetRegex.instance == null)
{
MetarnetRegex.instance = new MetarnetRegex();
}
return MetarnetRegex.instance;
}
private MetarnetRegex()
{
}
/// <summary>
/// 判断输入的字符串只包含汉字
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsChineseCh(string input)
{
Regex regex = new Regex("^[\u4e00-\u9fa5]+$");
return regex.IsMatch(input);
}
/// <summary>
/// 匹配3位或4位区号的电话号码,其中区号可以用小括号括起来,
/// 也可以不用,区号与本地号间可以用连字号或空格间隔,
/// 也可以没有间隔
/// \(0\d{2}\)[- ]?\d{8}|0\d{2}[- ]?\d{8}|\(0\d{3}\)[- ]?\d{7}|0\d{3}[- ]?\d{7}
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsPhone(string input)
{
string pattern = "^\\(0\\d{2}\\)[- ]?\\d{8}$|^0\\d{2}[- ]?\\d{8}$|^\\(0\\d{3}\\)[- ]?\\d{7}$|^0\\d{3}[- ]?\\d{7}$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是一个合法的手机号
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsMobilePhone(string input)
{
Regex regex = new Regex("^13\\d{9}$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串只包含数字
/// 可以匹配整数和浮点数
/// ^-?\d+$|^(-?\d+)(\.\d+)?$
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNumber(string input)
{
string pattern = "^-?\\d+$|^(-?\\d+)(\\.\\d+)?$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 匹配非负整数
///
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNotNagtive(string input)
{
Regex regex = new Regex(@"^\d+$");
return regex.IsMatch(input);
}
/// <summary>
/// 匹配正整数
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsUint(string input)
{
Regex regex = new Regex("^[0-9]*[1-9][0-9]*$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串字包含英文字母
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsEnglisCh(string input)
{
Regex regex = new Regex("^[A-Za-z]+$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是一个合法的Email地址
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsEmail(string input)
{
string pattern = @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否只包含数字和英文字母
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNumAndEnCh(string input)
{
string pattern = @"^[A-Za-z0-9]+$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是一个超链接
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsURL(string input)
{
//string pattern = @"http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?";
string pattern = @"^[a-zA-Z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是表示一个IP地址
/// </summary>
/// <param name="input">被比较的字符串</param>
/// <returns>是IP地址则为True</returns>
public static bool IsIPv4(string input)
{
string[] IPs = input.Split('.');
Regex regex = new Regex(@"^\d+$");
for(int i = 0; i<IPs.Length; i++)
{
if(!regex.IsMatch(IPs[i]))
{
return false;
}
if(Convert.ToUInt16(IPs[i]) > 255)
{
return false;
}
}
return true;
}
/// <summary>
/// 计算字符串的字符长度,一个汉字字符将被计算为两个字符
/// </summary>
/// <param name="input">需要计算的字符串</param>
/// <returns>返回字符串的长度</returns>
public static int GetCount(string input)
{
return Regex.Replace(input,@"[\u4e00-\u9fa5/g]","aa").Length;
}
/// <summary>
/// 调用Regex中IsMatch函数实现一般的正则表达式匹配
/// </summary>
/// <param name="pattern">要匹配的正则表达式模式。</param>
/// <param name="input">要搜索匹配项的字符串</param>
/// <returns>如果正则表达式找到匹配项,则为 true;否则,为 false。</returns>
public static bool IsMatch(string pattern, string input)
{
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 从输入字符串中的第一个字符开始,用替换字符串替换指定的正则表达式模式的所有匹配项。
/// </summary>
/// <param name="pattern">模式字符串</param>
/// <param name="input">输入字符串</param>
/// <param name="replacement">用于替换的字符串</param>
/// <returns>返回被替换后的结果</returns>
public static string Replace(string pattern, string input, string replacement)
{
Regex regex = new Regex(pattern);
return regex.Replace(input,replacement);
}
/// <summary>
/// 在由正则表达式模式定义的位置拆分输入字符串。
/// </summary>
/// <param name="pattern">模式字符串</param>
/// <param name="input">输入字符串</param>
/// <returns></returns>
public static string[] Split(string pattern, string input)
{
Regex regex = new Regex(pattern);
return regex.Split(input);
}
/// <summary>
/// 判断输入的字符串是否是合法的IPV6 地址
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsIPV6(string input)
{
string pattern = "";
string temp = input;
string[] strs = temp.Split(':');
if(strs.Length > 8)
{
return false;
}
int count = MetarnetRegex.GetStringCount(input,"::");
if(count>1)
{
return false;
}
else if(count == 0)
{
pattern = @"^([\da-f]{1,4}:){7}[\da-f]{1,4}$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
else
{
pattern = @"^([\da-f]{1,4}:){0,5}::([\da-f]{1,4}:){0,5}[\da-f]{1,4}$";
Regex regex1 = new Regex(pattern);
return regex1.IsMatch(input);
}
}
/* *******************************************************************
* 1、通过“:”来分割字符串看得到的字符串数组长度是否小于等于8
* 2、判断输入的IPV6字符串中是否有“::”。
* 3、如果没有“::”采用 ^([\da-f]{1,4}:){7}[\da-f]{1,4}$ 来判断
* 4、如果有“::” ,判断"::"是否止出现一次
* 5、如果出现一次以上 返回false
* 6、^([\da-f]{1,4}:){0,5}::([\da-f]{1,4}:){0,5}[\da-f]{1,4}$
* ******************************************************************/
/// <summary>
/// 判断字符串compare 在 input字符串中出现的次数
/// </summary>
/// <param name="input">源字符串</param>
/// <param name="compare">用于比较的字符串</param>
/// <returns>字符串compare 在 input字符串中出现的次数</returns>
private static int GetStringCount(string input, string compare)
{
int index = input.IndexOf(compare);
if(index != -1)
{
return 1 + GetStringCount(input.Substring(index + compare.Length),compare);
}
else
{
return 0;
}
}
}
}