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- //------------------------------------------------------------
- // Game Framework
- // Copyright © 2013-2021 loyalsoft. All rights reserved.
- // Homepage: http://www.game7000.com/
- // Feedback: http://www.game7000.com/
- //------------------------------------------------------------
- using System;
- using System.Text;
- namespace GameFramework
- {
- public static partial class Utility
- {
- /// <summary>
- /// 类型转换相关的实用函数。
- /// </summary>
- public static class Converter
- {
- private const float InchesToCentimeters = 2.54f; // 1 inch = 2.54 cm
- private const float CentimetersToInches = 1f / InchesToCentimeters; // 1 cm = 0.3937 inches
- /// <summary>
- /// 获取数据在此计算机结构中存储时的字节顺序。
- /// </summary>
- public static bool IsLittleEndian
- {
- get
- {
- return BitConverter.IsLittleEndian;
- }
- }
- /// <summary>
- /// 获取或设置屏幕每英寸点数。
- /// </summary>
- public static float ScreenDpi
- {
- get;
- set;
- }
- /// <summary>
- /// 将像素转换为厘米。
- /// </summary>
- /// <param name="pixels">像素。</param>
- /// <returns>厘米。</returns>
- public static float GetCentimetersFromPixels(float pixels)
- {
- if (ScreenDpi <= 0)
- {
- throw new GameFrameworkException("You must set screen DPI first.");
- }
- return InchesToCentimeters * pixels / ScreenDpi;
- }
- /// <summary>
- /// 将厘米转换为像素。
- /// </summary>
- /// <param name="centimeters">厘米。</param>
- /// <returns>像素。</returns>
- public static float GetPixelsFromCentimeters(float centimeters)
- {
- if (ScreenDpi <= 0)
- {
- throw new GameFrameworkException("You must set screen DPI first.");
- }
- return CentimetersToInches * centimeters * ScreenDpi;
- }
- /// <summary>
- /// 将像素转换为英寸。
- /// </summary>
- /// <param name="pixels">像素。</param>
- /// <returns>英寸。</returns>
- public static float GetInchesFromPixels(float pixels)
- {
- if (ScreenDpi <= 0)
- {
- throw new GameFrameworkException("You must set screen DPI first.");
- }
- return pixels / ScreenDpi;
- }
- /// <summary>
- /// 将英寸转换为像素。
- /// </summary>
- /// <param name="inches">英寸。</param>
- /// <returns>像素。</returns>
- public static float GetPixelsFromInches(float inches)
- {
- if (ScreenDpi <= 0)
- {
- throw new GameFrameworkException("You must set screen DPI first.");
- }
- return inches * ScreenDpi;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的布尔值。
- /// </summary>
- /// <param name="value">要转换的布尔值。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(bool value)
- {
- byte[] buffer = new byte[1];
- GetBytes(value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的布尔值。
- /// </summary>
- /// <param name="value">要转换的布尔值。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(bool value, byte[] buffer)
- {
- GetBytes(value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的布尔值。
- /// </summary>
- /// <param name="value">要转换的布尔值。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static void GetBytes(bool value, byte[] buffer, int startIndex)
- {
- if (buffer == null)
- {
- throw new GameFrameworkException("Buffer is invalid.");
- }
- if (startIndex < 0 || startIndex + 1 > buffer.Length)
- {
- throw new GameFrameworkException("Start index is invalid.");
- }
- buffer[startIndex] = value ? (byte)1 : (byte)0;
- }
- /// <summary>
- /// 返回由字节数组中首字节转换来的布尔值。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>如果 value 中的首字节非零,则为 true,否则为 false。</returns>
- public static bool GetBoolean(byte[] value)
- {
- return BitConverter.ToBoolean(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的一个字节转换来的布尔值。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>如果 value 中指定位置的字节非零,则为 true,否则为 false。</returns>
- public static bool GetBoolean(byte[] value, int startIndex)
- {
- return BitConverter.ToBoolean(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 Unicode 字符值。
- /// </summary>
- /// <param name="value">要转换的字符。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(char value)
- {
- byte[] buffer = new byte[2];
- GetBytes((short)value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 Unicode 字符值。
- /// </summary>
- /// <param name="value">要转换的字符。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(char value, byte[] buffer)
- {
- GetBytes((short)value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 Unicode 字符值。
- /// </summary>
- /// <param name="value">要转换的字符。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static void GetBytes(char value, byte[] buffer, int startIndex)
- {
- GetBytes((short)value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前两个字节转换来的 Unicode 字符。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由两个字节构成的字符。</returns>
- public static char GetChar(byte[] value)
- {
- return BitConverter.ToChar(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的两个字节转换来的 Unicode 字符。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由两个字节构成的字符。</returns>
- public static char GetChar(byte[] value, int startIndex)
- {
- return BitConverter.ToChar(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(short value)
- {
- byte[] buffer = new byte[2];
- GetBytes(value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(short value, byte[] buffer)
- {
- GetBytes(value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static unsafe void GetBytes(short value, byte[] buffer, int startIndex)
- {
- if (buffer == null)
- {
- throw new GameFrameworkException("Buffer is invalid.");
- }
- if (startIndex < 0 || startIndex + 2 > buffer.Length)
- {
- throw new GameFrameworkException("Start index is invalid.");
- }
- fixed (byte* valueRef = buffer)
- {
- *(short*)(valueRef + startIndex) = value;
- }
- }
- /// <summary>
- /// 返回由字节数组中前两个字节转换来的 16 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由两个字节构成的 16 位有符号整数。</returns>
- public static short GetInt16(byte[] value)
- {
- return BitConverter.ToInt16(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的两个字节转换来的 16 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由两个字节构成的 16 位有符号整数。</returns>
- public static short GetInt16(byte[] value, int startIndex)
- {
- return BitConverter.ToInt16(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(ushort value)
- {
- byte[] buffer = new byte[2];
- GetBytes((short)value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(ushort value, byte[] buffer)
- {
- GetBytes((short)value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 16 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static void GetBytes(ushort value, byte[] buffer, int startIndex)
- {
- GetBytes((short)value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前两个字节转换来的 16 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由两个字节构成的 16 位无符号整数。</returns>
- public static ushort GetUInt16(byte[] value)
- {
- return BitConverter.ToUInt16(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的两个字节转换来的 16 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由两个字节构成的 16 位无符号整数。</returns>
- public static ushort GetUInt16(byte[] value, int startIndex)
- {
- return BitConverter.ToUInt16(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(int value)
- {
- byte[] buffer = new byte[4];
- GetBytes(value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(int value, byte[] buffer)
- {
- GetBytes(value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static unsafe void GetBytes(int value, byte[] buffer, int startIndex)
- {
- if (buffer == null)
- {
- throw new GameFrameworkException("Buffer is invalid.");
- }
- if (startIndex < 0 || startIndex + 4 > buffer.Length)
- {
- throw new GameFrameworkException("Start index is invalid.");
- }
- fixed (byte* valueRef = buffer)
- {
- *(int*)(valueRef + startIndex) = value;
- }
- }
- /// <summary>
- /// 返回由字节数组中前四个字节转换来的 32 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由四个字节构成的 32 位有符号整数。</returns>
- public static int GetInt32(byte[] value)
- {
- return BitConverter.ToInt32(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的四个字节转换来的 32 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由四个字节构成的 32 位有符号整数。</returns>
- public static int GetInt32(byte[] value, int startIndex)
- {
- return BitConverter.ToInt32(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(uint value)
- {
- byte[] buffer = new byte[4];
- GetBytes((int)value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(uint value, byte[] buffer)
- {
- GetBytes((int)value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 32 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static void GetBytes(uint value, byte[] buffer, int startIndex)
- {
- GetBytes((int)value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前四个字节转换来的 32 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由四个字节构成的 32 位无符号整数。</returns>
- public static uint GetUInt32(byte[] value)
- {
- return BitConverter.ToUInt32(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的四个字节转换来的 32 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由四个字节构成的 32 位无符号整数。</returns>
- public static uint GetUInt32(byte[] value, int startIndex)
- {
- return BitConverter.ToUInt32(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(long value)
- {
- byte[] buffer = new byte[8];
- GetBytes(value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(long value, byte[] buffer)
- {
- GetBytes(value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位有符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static unsafe void GetBytes(long value, byte[] buffer, int startIndex)
- {
- if (buffer == null)
- {
- throw new GameFrameworkException("Buffer is invalid.");
- }
- if (startIndex < 0 || startIndex + 8 > buffer.Length)
- {
- throw new GameFrameworkException("Start index is invalid.");
- }
- fixed (byte* valueRef = buffer)
- {
- *(long*)(valueRef + startIndex) = value;
- }
- }
- /// <summary>
- /// 返回由字节数组中前八个字节转换来的 64 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由八个字节构成的 64 位有符号整数。</returns>
- public static long GetInt64(byte[] value)
- {
- return BitConverter.ToInt64(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的八个字节转换来的 64 位有符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由八个字节构成的 64 位有符号整数。</returns>
- public static long GetInt64(byte[] value, int startIndex)
- {
- return BitConverter.ToInt64(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(ulong value)
- {
- byte[] buffer = new byte[8];
- GetBytes((long)value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static void GetBytes(ulong value, byte[] buffer)
- {
- GetBytes((long)value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的 64 位无符号整数值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static void GetBytes(ulong value, byte[] buffer, int startIndex)
- {
- GetBytes((long)value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前八个字节转换来的 64 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由八个字节构成的 64 位无符号整数。</returns>
- public static ulong GetUInt64(byte[] value)
- {
- return BitConverter.ToUInt64(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的八个字节转换来的 64 位无符号整数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由八个字节构成的 64 位无符号整数。</returns>
- public static ulong GetUInt64(byte[] value, int startIndex)
- {
- return BitConverter.ToUInt64(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的单精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static unsafe byte[] GetBytes(float value)
- {
- byte[] buffer = new byte[4];
- GetBytes(*(int*)&value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的单精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static unsafe void GetBytes(float value, byte[] buffer)
- {
- GetBytes(*(int*)&value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的单精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static unsafe void GetBytes(float value, byte[] buffer, int startIndex)
- {
- GetBytes(*(int*)&value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前四个字节转换来的单精度浮点数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由四个字节构成的单精度浮点数。</returns>
- public static float GetSingle(byte[] value)
- {
- return BitConverter.ToSingle(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的四个字节转换来的单精度浮点数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由四个字节构成的单精度浮点数。</returns>
- public static float GetSingle(byte[] value, int startIndex)
- {
- return BitConverter.ToSingle(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的双精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static unsafe byte[] GetBytes(double value)
- {
- byte[] buffer = new byte[8];
- GetBytes(*(long*)&value, buffer, 0);
- return buffer;
- }
- /// <summary>
- /// 以字节数组的形式获取指定的双精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- public static unsafe void GetBytes(double value, byte[] buffer)
- {
- GetBytes(*(long*)&value, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定的双精度浮点值。
- /// </summary>
- /// <param name="value">要转换的数字。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- public static unsafe void GetBytes(double value, byte[] buffer, int startIndex)
- {
- GetBytes(*(long*)&value, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组中前八个字节转换来的双精度浮点数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>由八个字节构成的双精度浮点数。</returns>
- public static double GetDouble(byte[] value)
- {
- return BitConverter.ToDouble(value, 0);
- }
- /// <summary>
- /// 返回由字节数组中指定位置的八个字节转换来的双精度浮点数。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <returns>由八个字节构成的双精度浮点数。</returns>
- public static double GetDouble(byte[] value, int startIndex)
- {
- return BitConverter.ToDouble(value, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取 UTF-8 编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(string value)
- {
- return GetBytes(value, Encoding.UTF8);
- }
- /// <summary>
- /// 以字节数组的形式获取 UTF-8 编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <returns>buffer 内实际填充了多少字节。</returns>
- public static int GetBytes(string value, byte[] buffer)
- {
- return GetBytes(value, Encoding.UTF8, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取 UTF-8 编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- /// <returns>buffer 内实际填充了多少字节。</returns>
- public static int GetBytes(string value, byte[] buffer, int startIndex)
- {
- return GetBytes(value, Encoding.UTF8, buffer, startIndex);
- }
- /// <summary>
- /// 以字节数组的形式获取指定编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <param name="encoding">要使用的编码。</param>
- /// <returns>用于存放结果的字节数组。</returns>
- public static byte[] GetBytes(string value, Encoding encoding)
- {
- if (value == null)
- {
- throw new GameFrameworkException("Value is invalid.");
- }
- if (encoding == null)
- {
- throw new GameFrameworkException("Encoding is invalid.");
- }
- return encoding.GetBytes(value);
- }
- /// <summary>
- /// 以字节数组的形式获取指定编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <param name="encoding">要使用的编码。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <returns>buffer 内实际填充了多少字节。</returns>
- public static int GetBytes(string value, Encoding encoding, byte[] buffer)
- {
- return GetBytes(value, encoding, buffer, 0);
- }
- /// <summary>
- /// 以字节数组的形式获取指定编码的字符串。
- /// </summary>
- /// <param name="value">要转换的字符串。</param>
- /// <param name="encoding">要使用的编码。</param>
- /// <param name="buffer">用于存放结果的字节数组。</param>
- /// <param name="startIndex">buffer 内的起始位置。</param>
- /// <returns>buffer 内实际填充了多少字节。</returns>
- public static int GetBytes(string value, Encoding encoding, byte[] buffer, int startIndex)
- {
- if (value == null)
- {
- throw new GameFrameworkException("Value is invalid.");
- }
- if (encoding == null)
- {
- throw new GameFrameworkException("Encoding is invalid.");
- }
- return encoding.GetBytes(value, 0, value.Length, buffer, startIndex);
- }
- /// <summary>
- /// 返回由字节数组使用 UTF-8 编码转换成的字符串。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <returns>转换后的字符串。</returns>
- public static string GetString(byte[] value)
- {
- return GetString(value, Encoding.UTF8);
- }
- /// <summary>
- /// 返回由字节数组使用指定编码转换成的字符串。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="encoding">要使用的编码。</param>
- /// <returns>转换后的字符串。</returns>
- public static string GetString(byte[] value, Encoding encoding)
- {
- if (value == null)
- {
- throw new GameFrameworkException("Value is invalid.");
- }
- if (encoding == null)
- {
- throw new GameFrameworkException("Encoding is invalid.");
- }
- return encoding.GetString(value);
- }
- /// <summary>
- /// 返回由字节数组使用 UTF-8 编码转换成的字符串。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <param name="length">长度。</param>
- /// <returns>转换后的字符串。</returns>
- public static string GetString(byte[] value, int startIndex, int length)
- {
- return GetString(value, startIndex, length, Encoding.UTF8);
- }
- /// <summary>
- /// 返回由字节数组使用指定编码转换成的字符串。
- /// </summary>
- /// <param name="value">字节数组。</param>
- /// <param name="startIndex">value 内的起始位置。</param>
- /// <param name="length">长度。</param>
- /// <param name="encoding">要使用的编码。</param>
- /// <returns>转换后的字符串。</returns>
- public static string GetString(byte[] value, int startIndex, int length, Encoding encoding)
- {
- if (value == null)
- {
- throw new GameFrameworkException("Value is invalid.");
- }
- if (encoding == null)
- {
- throw new GameFrameworkException("Encoding is invalid.");
- }
- return encoding.GetString(value, startIndex, length);
- }
- }
- }
- }
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