71 lines
2.0 KiB
C#
71 lines
2.0 KiB
C#
using StgSharp.Data;
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using System;
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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.Numerics;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace StgSharp.Data
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{
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public static class CodeSeparator
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{
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public static unsafe T[] SeparateCode<T>(string filePath) where T : struct
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{
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byte[] allByte = File.ReadAllBytes(filePath);
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List<T> rawList = new List<T>();
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fixed (byte* allBytePtr = allByte)
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{
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for (int i = 0; i < allByte.Length; i += Marshal.SizeOf<T>())
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{
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T t = new T();
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t= *(T*)(allBytePtr + i);
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rawList.Add(t);
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}
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}
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return rawList.ToArray();
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}
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public static unsafe T[] SeparateCode<T>(byte[] stream) where T : struct
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{
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List<T> rawList = new List<T>();
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fixed (byte* allBytePtr = stream)
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{
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for (int i = 0; i < stream.Length; i += Marshal.SizeOf<T>())
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{
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T t = new T();
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t = *(T*)(allBytePtr + i);
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rawList.Add(t);
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}
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}
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return rawList.ToArray();
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}
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public static List<(T, ulong)> CountCodeFrequency<T>(T[] rawArray) where T : struct
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{
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Dictionary<T, ulong> frequencyCollection = new Dictionary<T, ulong>();
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foreach (var item in rawArray)
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{
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if (frequencyCollection.ContainsKey(item))
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{
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frequencyCollection[item] += 1;
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}
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else
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{
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frequencyCollection.Add(item, 1);
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}
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}
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return frequencyCollection.OrderByDescending(pair=>pair.Value)
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.Select(pair=>(pair.Key, pair.Value)).ToList();
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}
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}
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}
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