hondacrx
370 lines
12 KiB
C#
370 lines
12 KiB
C#
/*
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* Copyright (C) 2012-2017 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Numerics;
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using System.Reflection;
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using System.Reflection.Emit;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace System
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{
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public static class Extensions
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{
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public static bool HasAnyFlag<T>(this T value, T flag) where T : struct
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{
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long lValue = Convert.ToInt64(value);
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long lFlag = Convert.ToInt64(flag);
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return (lValue & lFlag) != 0;
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}
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public static string ToHexString(this byte[] byteArray)
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{
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return byteArray.Aggregate("", (current, b) => current + b.ToString("X2"));
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}
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public static byte[] ToByteArray(this string str)
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{
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str = str.Replace(" ", String.Empty);
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var res = new byte[str.Length / 2];
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for (int i = 0; i < res.Length; ++i)
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{
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string temp = String.Concat(str[i * 2], str[i * 2 + 1]);
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res[i] = Convert.ToByte(temp, 16);
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}
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return res;
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}
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public static byte[] ToByteArray(this string value, char separator)
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{
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return Array.ConvertAll(value.Split(separator), s => byte.Parse(s));
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}
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static uint LeftRotate(this uint value, int shiftCount)
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{
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return (value << shiftCount) | (value >> (0x20 - shiftCount));
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}
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public static byte[] GenerateRandomKey(this byte[] s, int length)
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{
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var random = new Random((int)((uint)(Guid.NewGuid().GetHashCode() ^ 1 >> 89 << 2 ^ 42)).LeftRotate(13));
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var key = new byte[length];
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for (int i = 0; i < length; i++)
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{
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int randValue = -1;
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do
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{
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randValue = (int)((uint)random.Next(0xFF)).LeftRotate(1) ^ i;
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} while (randValue > 0xFF && randValue <= 0);
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key[i] = (byte)randValue;
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}
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return key;
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}
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public static bool Compare(this byte[] b, byte[] b2)
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{
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for (int i = 0; i < b2.Length; i++)
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if (b[i] != b2[i])
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return false;
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return true;
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}
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public static byte[] Combine(this byte[] data, params byte[][] pData)
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{
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var combined = data;
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foreach (var arr in pData)
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{
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var currentSize = combined.Length;
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Array.Resize(ref combined, currentSize + arr.Length);
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Buffer.BlockCopy(arr, 0, combined, currentSize, arr.Length);
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}
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return combined;
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}
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public static object[] Combine(this object[] data, params object[][] pData)
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{
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var combined = data;
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foreach (var arr in pData)
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{
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var currentSize = combined.Length;
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Array.Resize(ref combined, currentSize + arr.Length);
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Array.Copy(arr, 0, combined, currentSize, arr.Length);
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}
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return combined;
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}
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public static BigInteger ToBigInteger<T>(this T value, bool isBigEndian = false)
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{
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var ret = BigInteger.Zero;
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switch (typeof(T).Name)
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{
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case "Byte[]":
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var data = value as byte[];
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if (isBigEndian)
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Array.Reverse(data);
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ret = new BigInteger(data.Combine(new byte[] { 0 }));
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break;
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case "BigInteger":
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ret = (BigInteger)Convert.ChangeType(value, typeof(BigInteger));
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break;
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default:
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throw new NotSupportedException(string.Format("'{0}' conversion to 'BigInteger' not supported.", typeof(T).Name));
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}
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return ret;
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}
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public static void Swap<T>(ref T left, ref T right)
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{
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T temp = left;
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left = right;
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right = temp;
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}
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public static Func<object, object> CompileGetter(this FieldInfo field)
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{
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string methodName = field.ReflectedType.FullName + ".get_" + field.Name;
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DynamicMethod setterMethod = new DynamicMethod(methodName, typeof(object), new[] { typeof(object) }, true);
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ILGenerator gen = setterMethod.GetILGenerator();
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if (field.IsStatic)
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{
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gen.Emit(OpCodes.Ldsfld, field);
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gen.Emit(field.FieldType.IsClass ? OpCodes.Castclass : OpCodes.Box, field.FieldType);
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}
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else
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{
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gen.Emit(OpCodes.Ldarg_0);
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gen.Emit(OpCodes.Castclass, field.DeclaringType);
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gen.Emit(OpCodes.Ldfld, field);
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gen.Emit(field.FieldType.IsClass ? OpCodes.Castclass : OpCodes.Box, field.FieldType);
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}
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gen.Emit(OpCodes.Ret);
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return (Func<object, object>)setterMethod.CreateDelegate(typeof(Func<object, object>));
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}
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public static Action<object, object> CompileSetter(this FieldInfo field)
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{
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string methodName = field.ReflectedType.FullName + ".set_" + field.Name;
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DynamicMethod setterMethod = new DynamicMethod(methodName, null, new[] { typeof(object), typeof(object) }, true);
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ILGenerator gen = setterMethod.GetILGenerator();
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if (field.IsStatic)
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{
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gen.Emit(OpCodes.Ldarg_1);
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gen.Emit(field.FieldType.IsClass ? OpCodes.Castclass : OpCodes.Unbox_Any, field.FieldType);
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gen.Emit(OpCodes.Stsfld, field);
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}
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else
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{
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gen.Emit(OpCodes.Ldarg_0);
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gen.Emit(OpCodes.Castclass, field.DeclaringType);
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gen.Emit(OpCodes.Ldarg_1);
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gen.Emit(field.FieldType.IsClass ? OpCodes.Castclass : OpCodes.Unbox_Any, field.FieldType);
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gen.Emit(OpCodes.Stfld, field);
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}
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gen.Emit(OpCodes.Ret);
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return (Action<object, object>)setterMethod.CreateDelegate(typeof(Action<object, object>));
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}
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public static Func<T, object> GetGetter<T>(this FieldInfo fieldInfo)
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{
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var paramExpression = Expression.Parameter(typeof(T));
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var propertyExpression = Expression.Field(paramExpression, fieldInfo);
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var convertExpression = Expression.TypeAs(propertyExpression, typeof(object));
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return Expression.Lambda<Func<T, object>>(convertExpression, paramExpression).Compile();
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}
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public static Action<T, object> GetSetter<T>(this FieldInfo fieldInfo)
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{
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var paramExpression = Expression.Parameter(typeof(T));
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var propertyExpression = Expression.Field(paramExpression, fieldInfo);
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var valueExpression = Expression.Parameter(typeof(object));
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var convertExpression = Expression.Convert(valueExpression, fieldInfo.FieldType);
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var assignExpression = Expression.Assign(propertyExpression, convertExpression);
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return Expression.Lambda<Action<T, object>>(assignExpression, paramExpression, valueExpression).Compile();
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}
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public static uint[] SerializeObject<T>(this T obj)
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{
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//if (obj.GetType()<StructLayoutAttribute>() == null)
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//return null;
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var size = Marshal.SizeOf(typeof(T));
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var ptr = Marshal.AllocHGlobal(size);
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byte[] array = new byte[size];
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Marshal.StructureToPtr(obj, ptr, true);
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Marshal.Copy(ptr, array, 0, size);
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Marshal.FreeHGlobal(ptr);
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uint[] result = new uint[size / 4];
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Buffer.BlockCopy(array, 0, result, 0, array.Length);
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return result;
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}
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public static List<T> DeserializeObjects<T>(this ICollection<uint> data)
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{
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List<T> list = new List<T>();
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if (data.Count == 0)
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return list;
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if (typeof(T).GetCustomAttribute<StructLayoutAttribute>() == null)
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return list;
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byte[] result = new byte[data.Count * sizeof(uint)];
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Buffer.BlockCopy(data.ToArray(), 0, result, 0, result.Length);
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var typeSize = Marshal.SizeOf(typeof(T));
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var objCount = data.Count / (typeSize / sizeof(uint));
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for (var i = 0; i < objCount; ++i)
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{
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var ptr = Marshal.AllocHGlobal(typeSize);
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Marshal.Copy(result, typeSize * i, ptr, typeSize);
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list.Add((T)Marshal.PtrToStructure(ptr, typeof(T)));
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Marshal.FreeHGlobal(ptr);
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}
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return list;
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}
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#region Strings
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public static bool IsEmpty(this string str)
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{
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return string.IsNullOrEmpty(str);
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}
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public static T ToEnum<T>(this string str) where T : struct
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{
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T value;
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if (!Enum.TryParse(str, out value))
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return default(T);
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return value;
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}
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public static string ConvertFormatSyntax(this string str)
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{
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string pattern = @"(%\W*\d*[a-zA-Z]*)";
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int count = 0;
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string result = Regex.Replace(str, pattern, m =>
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{
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return string.Concat("{", count++, "}");
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});
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return result;
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}
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public static bool Like(this string toSearch, string toFind)
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{
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return toSearch.ToLower().Contains(toFind.ToLower());
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}
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public static bool IsNumber(this string str)
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{
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double value;
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return double.TryParse(str, out value);
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}
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#endregion
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#region BinaryReader
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public static T ReadStruct<T>(this BinaryReader reader) where T : struct
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{
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byte[] data = reader.ReadBytes(Marshal.SizeOf(typeof(T)));
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GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
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T returnObject = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
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handle.Free();
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return returnObject;
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}
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public static T ReadStruct<T>(this BinaryReader reader, uint offset) where T : struct
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{
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reader.BaseStream.Position = offset;
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byte[] data = reader.ReadBytes(Marshal.SizeOf(typeof(T)));
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GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
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T returnObject = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
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handle.Free();
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return returnObject;
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}
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public static string ReadCString(this BinaryReader reader)
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{
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byte num;
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List<byte> temp = new List<byte>();
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while ((num = reader.ReadByte()) != 0)
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temp.Add(num);
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return Encoding.UTF8.GetString(temp.ToArray());
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}
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public static string ReadString(this BinaryReader reader, int count)
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{
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var array = reader.ReadBytes(count);
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return Encoding.ASCII.GetString(array);
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}
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public static string ReadStringFromChars(this BinaryReader reader, int count)
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{
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return new string(reader.ReadChars(count));
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}
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public static byte[] ToByteArray(this BinaryReader reader)
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{
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var data = new byte[reader.BaseStream.Length];
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long pos = reader.BaseStream.Position;
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reader.BaseStream.Seek(0, SeekOrigin.Begin);
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for (int i = 0; i < data.Length; i++)
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data[i] = (byte)reader.BaseStream.ReadByte();
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reader.BaseStream.Seek(pos, SeekOrigin.Begin);
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return data;
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}
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#endregion
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}
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} |