feilong-client/Assets/Scripts/Business/Runtime/Utils/StringUtils.cs

using System;
using XGame.Database;

namespace FL
{
    public static class StringUtils
    {
        /// <summary>
        /// 毫秒转指定格式的时间字符串
        /// </summary>
        /// <param name="milliseconds"></param>
        /// <param name="format">字符串格式, 例: @"mm\:ss"</param>
        /// <returns></returns>
        public static string ToTimeString(this long milliseconds, string format)
        {
            var timeData = TimeSpan.FromMilliseconds(milliseconds);
            return timeData.ToString(format);
        }
        private const string MILLION = "M";
        private const string THOUSAND = "K";
        /// <summary>
        /// 货币、战力数字转字符串
        /// >=百万，以M结尾
        /// >=万，以K结尾
        /// </summary>
        /// <param name="number"></param>
        /// <param name="decimals">保留小数点位数</param>
        /// <returns></returns>
        public static string ToNumberString(this long number, int decimals = 2)
        {
            const int million = 1000000;
            const int thousand = 1000;
            var format = $"F{decimals}";//$"{{0:N{decimals}}}";
            if (number >= million)
            {
                if (number % million == 0)
                    return (number / million).ToString() + MILLION;
                return ((double)number / million).ToString(format) + MILLION;
            }
            if (number >= thousand * 10)
            {
                if (number % thousand == 0)
                    return (number / thousand).ToString() + THOUSAND;
                return ((double)number / thousand).ToString(format) + THOUSAND;
            }
            return number.ToString();
        }
        /// <summary>
        /// 数据库万分比字段转真实值以显示百分比显示(最多保留小数点后2位,小数部分为零时不显示)
        /// </summary>
        /// <param name="val"></param>
        /// <param name="decimals">保留小数点位数</param>
        /// <returns></returns>
        public static string ToPercentString(this int val, int decimals = 2)
        {
            const int TenThousand = 10000; // 万
            if (val % TenThousand < 50)
            { // 小数点4舍5入，小于0.005，尾数为xx.00%
                return (val * 0.0001f).ToString("P0");
            }
            return (val * 0.0001f).ToString($"P{decimals}");
        }

        /// <summary>
        /// 数据库万分比字段转真实值以显示百分比显示(最多保留小数点后2位,小数部分为零时不显示)
        /// </summary>
        /// <param name="val"></param>
        /// <param name="decimals">保留小数点位数</param>
        /// <returns></returns>
        public static string ToPercentString(this long val, int decimals = 2)
        {
            const int TenThousand = 10000; // 万
            if (val % TenThousand < 50)
            { // 小数点4舍5入，小于0.005，尾数为xx.00%
                return (val * 0.0001f).ToString("P0");
            }
            return (val * 0.0001f).ToString($"P{decimals}");
        }
        /// <summary>
        /// 时间戳转换成 xxxx-xx-xx xx:xx格式
        /// </summary>
        /// <param name="milliseconds"></param>
        /// <returns></returns>
        public static string ToTimeYMDHM(this long milliseconds)
        {
            DateTimeOffset dateTime = DateTimeOffset.FromUnixTimeSeconds(milliseconds);
            string yearMonthDay = dateTime.ToString("yyyy-MM-dd hh:mm");
            return yearMonthDay;
        }

        /// <summary>
        /// 获取属性类型值
        /// </summary>
        /// <param name="attributeInfo"></param>
        /// <param name="attrVal"></param>
        /// <returns></returns>
        public static string GetAttrValueDesc(AttrDescTable attributeInfo, int attrVal)
        {
            return (attributeInfo.Num_type == 1 || attributeInfo.Id == (int)EAttributeType.AtkSpeed) ? attrVal.ToPercentString() :
                   (attrVal == 0 ? "0" : attrVal.ToString());
        }
    }
}