97 lines
3.2 KiB
C#
97 lines
3.2 KiB
C#
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using System;
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using System.Text;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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namespace HT.Cloud.Code
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{
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/// <summary>
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/// 数值扩展类
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/// </summary>
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public static partial class Extensions
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{
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#region 进制转换
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/// <summary>
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/// 10进制转换到2-36进制
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/// </summary>
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/// <param name="this">10进制数字</param>
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/// <param name="radix">进制，范围2-36</param>
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/// <param name="digits">编码取值规则，最大转换位数不能大于该字符串的长度</param>
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/// <returns></returns>
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public static string ToBase(this long @this, int radix, string digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")
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{
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const int BitsInLong = 64;
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if (radix < 2 || radix > digits.Length)
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throw new ArgumentException("The radix must be >= 2 and <= " + digits.Length.ToString());
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if (@this == 0)
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return "0";
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var index = BitsInLong - 1;
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var currentNumber = Math.Abs(@this);
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var charArray = new char[BitsInLong];
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while (currentNumber != 0)
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{
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var remainder = (int)(currentNumber % radix);
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charArray[index--] = digits[remainder];
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currentNumber /= radix;
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}
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var result = new string(charArray, index + 1, BitsInLong - index - 1);
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if (@this < 0)
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{
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result = "-" + result;
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}
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return result;
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}
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/// <summary>
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/// byte转16进制
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/// </summary>
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/// <param name="this"></param>
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/// <returns></returns>
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public static string ToHex(this byte @this) => Convert.ToString(@this, 16);
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/// <summary>
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/// 2进制转16进制
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/// </summary>
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/// <param name="this"></param>
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/// <returns></returns>
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public static string ToHex(this string @this) => Convert.ToString(Convert.ToInt64(@this, 2), 16);
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/// <summary>
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/// 16进制转2进制
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/// </summary>
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/// <param name="this"></param>
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/// <returns></returns>
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public static string ToBinary(this string @this) => Convert.ToString(Convert.ToInt64(@this, 16), 2);
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/// <summary>
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/// 2进制/16进制转8进制
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/// </summary>
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/// <param name="this"></param>
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/// <param name="fromBase">2或者16，表示2进制或者16进制；</param>
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/// <returns></returns>
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public static string ToOctal(this string @this, int fromBase) => Convert.ToString(Convert.ToInt64(@this, fromBase), 8);
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/// <summary>
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/// 2进制/16进制转10进制
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/// </summary>
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/// <param name="this"></param>
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/// <param name="fromBase">2或者16，表示2进制或者16进制；</param>
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/// <returns></returns>
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public static string ToDecimalism(this string @this, int fromBase)
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{
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if (fromBase == 16)
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return Convert.ToInt32(@this, 16).ToString();
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else
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return Convert.ToString(Convert.ToInt64(@this, 2), 10);
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}
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#endregion
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}
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}
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