317 lines
9.6 KiB
C#
317 lines
9.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace DH.RBAC.Utility.Other
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{
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/// <summary>
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/// 字符串操作类
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/// </summary>
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public static class StringHelper
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{
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/// <summary>
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/// 把字符串按照分隔符转换成 List
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/// </summary>
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/// <param name="str">源字符串</param>
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/// <param name="speater">分隔符</param>
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/// <param name="toLower">是否转换为小写</param>
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/// <returns></returns>
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public static List<string> SplitToList(this string str, char speater = ',', bool toLower = false)
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{
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List<string> list = new List<string>();
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string[] ss = str.Split(speater);
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foreach (string s in ss)
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{
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if (!string.IsNullOrEmpty(s) && s != speater.ToString())
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{
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string strVal = s;
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if (toLower)
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{
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strVal = s.ToLower();
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}
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list.Add(strVal);
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}
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}
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return list;
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}
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/// <summary>
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/// 把 List<string> 按照分隔符组装成 string
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/// </summary>
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/// <param name="list"></param>
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/// <param name="speater"></param>
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/// <returns></returns>
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public static string GetStrArray(this List<string> list, string speater = ",")
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{
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < list.Count; i++)
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{
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if (i == list.Count - 1)
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{
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sb.Append(list[i]);
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}
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else
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{
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sb.Append(list[i]);
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sb.Append(speater);
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}
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}
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return sb.ToString();
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}
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/// <summary>
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/// 删除最后结尾的指定字符后的字符
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/// </summary>
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public static string DelLastChar(this string str, string strChar = ",")
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{
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return str.Substring(0, str.LastIndexOf(strChar));
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}
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/// <summary>
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/// 转全角的函数(SBC case)
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/// </summary>
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/// <param name="input"></param>
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/// <returns></returns>
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public static string ToSBC(string input)
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{
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//半角转全角：
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char[] c = input.ToCharArray();
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for (int i = 0; i < c.Length; i++)
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{
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if (c[i] == 32)
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{
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c[i] = (char)12288;
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continue;
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}
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if (c[i] < 127)
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c[i] = (char)(c[i] + 65248);
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}
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return new string(c);
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}
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/// <summary>
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/// 转半角的函数(SBC case)
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/// </summary>
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/// <param name="input">输入</param>
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/// <returns></returns>
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public static string ToDBC(string input)
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{
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char[] c = input.ToCharArray();
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for (int i = 0; i < c.Length; i++)
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{
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if (c[i] == 12288)
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{
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c[i] = (char)32;
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continue;
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}
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if (c[i] > 65280 && c[i] < 65375)
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c[i] = (char)(c[i] - 65248);
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}
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return new string(c);
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}
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/// <summary>
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/// 获取正确的Id，如果不是正整数，返回0
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/// </summary>
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/// <param name="value"></param>
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/// <returns>返回正确的整数ID，失败返回0</returns>
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public static int ToInt32(this string value)
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{
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if (IsNumberId(value))
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return int.Parse(value);
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else
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return 0;
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}
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/// <summary>
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/// 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。(0除外)
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/// </summary>
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/// <param name="_value">需验证的字符串。。</param>
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/// <returns>是否合法的bool值。</returns>
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public static bool IsNumberId(string _value)
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{
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return QuickValidate("^[1-9]*[0-9]*$", _value);
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}
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/// <summary>
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/// 快速验证一个字符串是否符合指定的正则表达式。
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/// </summary>
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/// <param name="_express">正则表达式的内容。</param>
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/// <param name="_value">需验证的字符串。</param>
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/// <returns>是否合法的bool值。</returns>
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public static bool QuickValidate(string _express, string _value)
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{
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if (_value == null) return false;
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Regex myRegex = new Regex(_express);
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if (_value.Length == 0)
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{
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return false;
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}
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return myRegex.IsMatch(_value);
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}
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/// <summary>
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/// 得到字符串长度，一个汉字长度为2
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/// </summary>
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/// <param name="inputString">参数字符串</param>
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/// <returns></returns>
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public static int StrLength(this string inputString)
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{
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System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
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int tempLen = 0;
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byte[] s = ascii.GetBytes(inputString);
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for (int i = 0; i < s.Length; i++)
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{
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if ((int)s[i] == 63)
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tempLen += 2;
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else
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tempLen += 1;
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}
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return tempLen;
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}
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/// <summary>
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/// 截取指定长度字符串
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/// </summary>
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/// <param name="inputString">要处理的字符串</param>
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/// <param name="len">指定长度</param>
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/// <returns>返回处理后的字符串</returns>
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public static string splitString(this string inputString, int len)
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{
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bool isShowFix = false;
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if (len % 2 == 1)
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{
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isShowFix = true;
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len--;
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}
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System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
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int tempLen = 0;
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string tempString = "";
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byte[] s = ascii.GetBytes(inputString);
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for (int i = 0; i < s.Length; i++)
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{
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if ((int)s[i] == 63)
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tempLen += 2;
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else
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tempLen += 1;
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try
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{
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tempString += inputString.Substring(i, 1);
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}
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catch
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{
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break;
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}
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if (tempLen > len)
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break;
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}
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byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
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if (isShowFix && mybyte.Length > len)
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tempString += "…";
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return tempString;
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}
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/// <summary>
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/// HTML转行成TEXT
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/// </summary>
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/// <param name="strHtml"></param>
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/// <returns></returns>
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public static string HtmlToTxt(this string strHtml)
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{
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string[] aryReg ={
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@"<script[^>]*?>.*?</script>",
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@"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>",
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@"([\r\n])[\s]+",
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@"&(quot|#34);",
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@"&(amp|#38);",
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@"&(lt|#60);",
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@"&(gt|#62);",
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@"&(nbsp|#160);",
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@"&(iexcl|#161);",
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@"&(cent|#162);",
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@"&(pound|#163);",
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@"&(copy|#169);",
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@"&#(\d+);",
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@"-->",
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@"<!--.*\n"
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};
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string newReg = aryReg[0];
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string strOutput = strHtml;
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for (int i = 0; i < aryReg.Length; i++)
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{
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Regex regex = new Regex(aryReg[i], RegexOptions.IgnoreCase);
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strOutput = regex.Replace(strOutput, string.Empty);
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}
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strOutput.Replace("<", "");
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strOutput.Replace(">", "");
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strOutput.Replace("\r\n", "");
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return strOutput;
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}
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/// <summary>
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/// 判断对象是否为空，为空返回true
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/// </summary>
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/// <typeparam name="T">要验证的对象的类型</typeparam>
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/// <param name="data">要验证的对象</param>
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public static bool IsNullOrEmpty(this object data)
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{
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//如果为null
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if (data == null)
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{
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return true;
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}
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if (string.IsNullOrEmpty(data.ToString().Trim()))
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return true;
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return false;
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}
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/// <summary>
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/// 判断对象是否为空，为空返回true
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/// </summary>
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/// <typeparam name="T">要验证的对象的类型</typeparam>
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/// <param name="data">要验证的对象</param>
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public static bool IsNullOrEmpty<T>(this List<T> collection)
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{
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if (collection == null)
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return true;
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if (collection.Count() == 0)
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return true;
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return false;
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}
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public static bool IsNullOrEmpty(this DataSet ds)
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{
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if (ds == null)
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return true;
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if (ds.Tables.Count == 0)
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return true;
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return ds.Tables[0].IsNullOrEmpty();
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}
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public static bool IsNullOrEmpty(this DataTable dt)
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{
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if (dt == null)
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return true;
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if (dt.Rows.Count == 0)
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return true;
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return false;
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}
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}
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}
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