RaUI/Source/MyDb/DbManage/Strings.cs

//--------------------------日期:2013-8-28
//--------------------------版本:2.0.1.0
//--------------------------作者:itrycn
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
//字符串操作类
namespace ryCommon
{
    /// <summary>
    /// 字符串操作类
    /// </summary>
    public class Strings
    {
        /// <summary>
        /// 字符串转Base64
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public string StrToBase64(string input)
        {
            System.Text.Encoding encode = System.Text.Encoding.Default;
            byte[] bytedata = encode.GetBytes(input);
            return Convert.ToBase64String(bytedata, 0, bytedata.Length);
        }
        /// <summary>
        /// Base64转字符串
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public string Base64ToStr(string input)
        {
            try
            {
                byte[] bpath = Convert.FromBase64String(input);
                return System.Text.Encoding.Default.GetString(bpath);
            }
            catch { return ""; }
        }
        /// <summary>
        /// 转换指定字符串为布尔类型
        /// </summary>
        public bool StrToBool(string Str,bool defValue)
        {
            try
            {
                if (Str == "1" || Str.ToLower()=="true")
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch { return defValue; }
        }
        /// <summary>
        /// 转换指定字符串为Double类型
        /// </summary>
        public double StrToDouble(string Str, double defValue)
        {
            try
            {
               return Convert.ToDouble(Str);
            }
            catch { return defValue; }
        }
        /// <summary>  
        /// 已重载.计算两个日期的时间间隔,返回的是时间间隔的日期差的绝对值.  
        /// </summary>  
        /// <param name="DateTime1">第一个日期和时间</param>  
        /// <param name="DateTime2">第二个日期和时间</param>  
        /// <returns></returns>  
        public string DateDiff(DateTime DateTime1, DateTime DateTime2)
        {
            string dateDiff = "";
            try
            {
                TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
                TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
                TimeSpan ts = ts1.Subtract(ts2).Duration();
                if(ts.Days!=0)
                {
                    dateDiff = ts.Days.ToString() + "天";
                }
                if (ts.Hours != 0)
                {
                    dateDiff += ts.Hours.ToString() + "小时";
                }
                if (ts.Minutes != 0)
                {
                    dateDiff += ts.Minutes.ToString() + "分钟";
                }
                if (ts.Seconds != 0)
                {
                    dateDiff += ts.Seconds.ToString() + "秒";
                }
            }
            catch
            {

            }
            if (dateDiff == "") { dateDiff = "0秒"; }
            return dateDiff;
        }
        /// <summary>  
        /// 已重载.计算一个时间与当前本地日期和时间的时间间隔,返回的是时间间隔的日期差的绝对值.  
        /// </summary>  
        /// <param name="DateTime1">一个日期和时间</param>  
        /// <returns></returns>  
        public string DateDiff(DateTime DateTime1)
        {
            return this.DateDiff(DateTime1, DateTime.Now);
        }
        /// <summary>
        /// 转换指定字符串为Int类型
        /// </summary>
        public int StrToInt(string Str, int defValue)
        {
            try
            {
                return Convert.ToInt32(Str);
            }
            catch { return defValue; }
        }
        /// <summary>
        /// 转换指定字符串为Int类型
        /// </summary>
        public int StrToInt(string Str, int minValue, int maxValue, int defValue)
        {
            try
            {
                int tmpI=Convert.ToInt32(Str);
                if (tmpI < minValue || tmpI > maxValue)
                {
                    return defValue;
                }
                else
                {
                    return tmpI;
                }
            }
            catch { return defValue; }
        }
        /// <summary>
        /// 转换指定布尔类型为Int类型,true为1，false为0
        /// </summary>
        public int BoolToInt(bool sValue)
        {
            try
            {
                if (sValue ==true)
                {
                    return 1;
                }
                else
                {
                    return 0;
                }
            }
            catch { return 0; }
        }
        /// <summary>
        /// 判断指定字符串是否是布尔类型
        /// </summary>
        public bool IsBool(string sValue)
        {
            try
            {
                Convert.ToBoolean(sValue);
                return true;
            }
            catch { return false; }
        }
        /// <summary>
        /// 判断指定字符串是否是Double类型
        /// </summary>
        public bool IsDouble(string sValue)
        {
            try
            {
                Convert.ToDouble(sValue);
                return true;
            }
            catch { return false; }
        }
        /// <summary>
        /// 判断指定字符串是否是Int类型
        /// </summary>
        public bool IsInt(string sValue)
        {
            try
            {
                Convert.ToInt64(sValue);
                if (sValue.IndexOf(".")>=0)
                {
                    return false;
                }
                else
                {
                    return true;
                }
            }
            catch { return false; }
        }
       /// <summary>
       /// 根据年月日转换成日期
       /// </summary>
       /// <param name="year"></param>
       /// <param name="month"></param>
       /// <param name="day"></param>
       /// <returns></returns>
        public DateTime ToDate(int year, int month, int day)
        {
            try
            {
                return Convert.ToDateTime(year.ToString() + "-" + month.ToString() + "-" + day.ToString());
            }
            catch { return Convert.ToDateTime("2000-1-1"); }
        }
		/// <summary>
        /// 追加字符
        /// </summary>
        public string AppendStr(string str, string addstr)
        {
            if (str == "")
            {
                return addstr;
            }
            else
            {
                if (addstr == "")
                {
                    return str;
                }
                else
                {
                    return str + "\r\n" + addstr;
                }
            }
        }
		/// <summary>
        /// 获取2个字符串中间的内容,point1为空表示从首位开始算，point2为空表示算到结尾。
        /// </summary>
        public string GetStr(string str, string point1, string point2, int iPos1,out int endPos, string defValue)
        {
            int iIndex = 0;
            endPos = 0;
            if(iPos1>= str.Length)
            {
                return defValue;
            }
            if (point1 != "")
            { iIndex = str.IndexOf(point1, iPos1); }
            if (iIndex == -1) { return defValue; }
            int iIndex2 = 0;
            if (point2 == "") { iIndex2 = str.Length; }
            else { iIndex2 = str.IndexOf(point2, iIndex + point1.Length); }
            string tmpStr = str;
            if (iIndex < iIndex2 && iIndex >= 0)
            {
                tmpStr = str.Substring(iIndex + point1.Length, iIndex2 - iIndex - point1.Length);
                endPos = iIndex2 + point2.Length;
            }
            else
            {
                return defValue;
            }
            return tmpStr;
        }
        /// <summary>
        /// 判断字符串是否只包含数字或英文
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsEngOrNum(string str)
        {
            return !Regex.IsMatch(str, "[^0-9a-zA-Z]");
        }
        /// <summary>
        /// 判断字符串是否只包含英文
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsEng(string str)
        {
            return !Regex.IsMatch(str, "[^a-zA-Z]");
        }
        /// <summary>
        /// 判断字符串是否匹配,支持?*通配符
        /// </summary>
        /// <param name="str">待匹配的字符串</param>
        /// <param name="likestr">匹配的通配符</param>
        /// <returns></returns>
        public static bool IsMatchStr(string str, string likestr)
        {
            Regex replace = new Regex("[.$^{\\[(|)*+?\\\\]");
            string a = replace.Replace(likestr,
                    delegate (Match m)
                    {
                        switch (m.Value)
                        {
                            case "?":
                                return ".?";
                            case "*":
                                return ".*";
                            default:
                                return "\\" + m.Value;
                        }
                    });
            Regex strP = new Regex(a);
            return strP.IsMatch(str);
            //return replace.IsMatch(wildcardStr1);
        }
        /// <summary>
        /// 通配符替换
        /// </summary>
        /// <param name="str"></param>
        /// <param name="likestr"></param>
        /// <param name="replacement"></param>
        /// <returns></returns>
        public static string ReplaceByMatch(string str, string likestr, string replacement)
        {
            Regex replace = new Regex("[.$^{\\[(|)*+?\\\\]");
            string a = replace.Replace(likestr,
                    delegate (Match m)
                    {
                        switch (m.Value)
                        {
                            case "?":
                                return ".?";
                            case "*":
                                return ".*";
                            default:
                                return "\\" + m.Value;
                        }
                    });
            Regex strP = new Regex(a);
            return strP.Replace(str, replacement);
            //return replace.IsMatch(wildcardStr1);
        }
        /// <summary>
        /// 获取匹配的内容
        /// </summary>
        /// <param name="str"></param>
        /// <param name="likestr"></param>
        /// <param name="isRegex"></param>
        /// <returns></returns>
        public static string GetMatchStr(string str, string likestr,bool isRegex)
        {
            string _likestr = likestr;
            if (!isRegex)
            {
                Regex replace = new Regex("[.$^{\\[(|)*+?\\\\]");
                _likestr = replace.Replace(likestr,
                        delegate (Match m)
                        {
                            switch (m.Value)
                            {
                                case "?":
                                    return ".?";
                                case "*":
                                    return ".*";
                                default:
                                    return "\\" + m.Value;
                            }
                        });
            }
            Match match = Regex.Match(str, _likestr);
            return match.Value;
            //return replace.IsMatch(wildcardStr1);
        }
    }
}