GBRSGB/CZFW.Core/Utility.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text;

namespace CZFW.Core
{
    public static class Utility
    {
        public static TType Parse<TType>(object value, TType defaultValue = default(TType))
        {
            if (value == null || value == DBNull.Value || string.IsNullOrWhiteSpace(value.ToString())) return defaultValue;
            Type type = typeof(TType);
            Type underlyingType = Nullable.GetUnderlyingType(type);
            return (TType)Convert.ChangeType(value.ToString(), underlyingType ?? type);
        }

        public static long GetUnixTimeTick(DateTime? date = null)
        {
            if (date == null)
            {
                date = DateTime.Now;
            }
            var timespan = date.Value.Subtract(new DateTime(1970, 1, 1));
            return timespan.Ticks;
        }

        public static string GenerateTreeMark(string parentMark = null)
        {
            if (string.IsNullOrEmpty(parentMark))
                parentMark = "0";
            var ticks = Utility.GetUnixTimeTick();
            var mark = $"{parentMark}${ticks.ToString()}$";
            return mark;
        }

        public static string Round(object obj)
        {
            var dnum = Parse<double>(obj);
            var num = Math.Round(dnum);
            return num.ToString(System.Globalization.CultureInfo.InvariantCulture);
        }

        public static string GetNowString(string format = "yyyy/MM/dd hh:mm:ss")
        {
            var now = DateTime.Now;
            var nowStr = now.ToString(format, new CultureInfo("en-US"));
            return nowStr;
        }

        public static string GetCnNowString(string format = "yyyy/MM/dd hh:mm:ss")
        {
            var now = DateTime.Now;
            var nowStr = now.ToString(format, new CultureInfo("zn-CN"));
            return nowStr;
        }

        public static string GetNowStringForSql(string format = "yyyy/MM/dd hh:mm:ss")
        {
            var res = $"'{GetNowString(format)}'";
            return res;
        }

        /// <summary>
        /// 格式化显示时间为几个月,几天前,几小时前,几分钟前,或几秒前
        /// </summary>
        /// <param name="dt">要格式化显示的时间</param>
        /// <returns>几个月,几天前,几小时前,几分钟前,或几秒前</returns>
        public static string DateStringFromNow(DateTime dt)
        {
            TimeSpan span = DateTime.Now - dt;
            if (span.TotalDays > 60)
            {
                return dt.ToShortDateString();
            }
            if (span.TotalDays > 30)
            {
                return "1个月前";
            }
            if (span.TotalDays > 14)
            {
                return "2周前";
            }
            if (span.TotalDays > 7)
            {
                return "1周前";
            }
            if (span.TotalDays > 1)
            {
                return $"{(int)Math.Floor(span.TotalDays)}天前";
            }
            if (span.TotalHours > 1)
            {
                return $"{(int)Math.Floor(span.TotalHours)}小时前";
            }
            if (span.TotalMinutes > 1)
            {
                return $"{(int)Math.Floor(span.TotalMinutes)}分钟前";
            }
            return span.TotalSeconds >= 1 ? $"{(int)Math.Floor(span.TotalSeconds)}秒前" : "刚刚";
        }

        public static bool IsEmpty(this object value)
        {
            return string.IsNullOrEmpty(value?.ToString());
        }

        public static string UpperCaseUrlEncode(string s)
        {
            char[] temp = System.Web.HttpUtility.UrlEncode(s).ToCharArray();
            for (int i = 0; i < temp.Length - 2; i++)
            {
                if (temp[i] == '%')
                {
                    temp[i + 1] = char.ToUpper(temp[i + 1]);
                    temp[i + 2] = char.ToUpper(temp[i + 2]);
                }
            }
            return new string(temp);
        }
    }
}