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Include/IO_Ex.hpp

@@ -0,0 +1,126 @@
+#pragma once
+#include <iostream>
+#include <fstream>
+#include <cctype>
+#include <algorithm>
+#include <vector>
+using namespace std;
+
+// 定义宏用于注册获取不同类型值的函数
+#define REGISTER_GET_FUNCTION(Type, FunctionName) \
+    Type Get##FunctionName() { \
+        char buffer[sizeof(Type)]; \
+        read(buffer, sizeof(Type)); \
+        Type result; \
+        std::memcpy(&result, buffer, sizeof(Type)); \
+        return result; \
+    }
+class IO_Ex
+{
+
+public:
+    //原始数据
+    char* _Data;
+    //最大长度
+    int _MaxLen = 0;
+    //当前位置
+    int _CurPos = 0;
+    //上一次读取的实际大小
+    int _LastReadSize = 0;
+
+public:
+    IO_Ex(char* data,int len) {
+        _Data = data;
+        _MaxLen = len;
+    }
+    ~IO_Ex();
+
+public:
+    int tellg() {
+        return _CurPos;
+    }
+    void read(char* ptr, int size) {
+        if ((size + _CurPos) > _MaxLen) {
+            size = _MaxLen - _CurPos;
+        }
+        memcpy(ptr, _Data + _CurPos, size);
+        _CurPos += size;
+        _LastReadSize = size;
+    }
+    int gcount() {
+        return _LastReadSize;
+    }
+    void seek(int _jidx) {
+        _CurPos = _jidx;
+    }
+
+public:
+    unsigned int charPtrToInt(const char* bytes) {
+        unsigned int result;
+        std::memcpy(&result, bytes, sizeof(int));
+        return result;
+    }
+
+    void CrcDecode(const int Length, const int crc32) {
+        int num = 0x81A79011;
+        for (int i = 0; i < Length; i += 4)
+        {
+            int Pos = tellg();
+            char buffer[4];
+            read(buffer, 4);
+            unsigned int anInt = charPtrToInt(buffer);
+            unsigned int val = (anInt ^ num ^ crc32);
+            unsigned int jiemi = (val >> 6) | ((val << (32 - 6)) & 0xFFFFFFFF);
+            _Data[Pos] = ((jiemi >> 0) & 0xFF);;
+            _Data[Pos + 1] = ((jiemi >> 8) & 0xFF);
+            _Data[Pos + 2] = ((jiemi >> 16) & 0xFF);
+            _Data[Pos + 3] = ((jiemi >> 24) & 0xFF);
+        }
+    }
+
+    std::string tolower(std::string str) {
+        for (size_t i = 0; i < str.length(); ++i) {
+            str[i] = std::tolower(str[i]);
+        }
+        return str;
+    }
+
+    std::vector<std::string> split(const std::string& str, const std::string& delimiter) {
+        std::vector<std::string> tokens;
+        size_t pos = 0;
+        size_t found;
+        while ((found = str.find(delimiter, pos)) != std::string::npos) {
+            tokens.push_back(str.substr(pos, found - pos));
+            pos = found + delimiter.length();
+        }
+        tokens.push_back(str.substr(pos));
+        return tokens;
+    }
+
+
+public:
+    REGISTER_GET_FUNCTION(int, Int);
+    REGISTER_GET_FUNCTION(short, Short);
+    REGISTER_GET_FUNCTION(unsigned short, UShort);
+
+    std::string GetString(const int size) {
+        char* buffer = new char[size];
+        read(buffer, size);
+        if (gcount() != size) {
+            std::cerr << "未能成功读取指定字节数的数据！" << std::endl;
+            delete[] buffer;
+            return "";
+        }
+        std::string result(buffer, size);
+        delete[] buffer;
+        return result;
+    }
+
+private:
+
+};
+
+
+IO_Ex::~IO_Ex()
+{
+}