zhipuzi_pos_windows/lewaimai_dispatch/helper/CLewaimaiString.h

#pragma once

using namespace std;

#include <Windows.h>

class CLewaimaiString
{
public:
	CLewaimaiString();
	~CLewaimaiString();

	static bool base64_encode(const string& input, string* output);
	static bool base64_decode(const string& input, string* output);

	static void trim(string &s);

	//将string转换成wstring  
	static wstring string2wstring(string str)
	{
		wstring result;

		//获取缓冲区大小，并申请空间，缓冲区大小按字符计算  
		int len = MultiByteToWideChar(CP_ACP, 0, str.c_str(), str.size(), NULL, 0);
		TCHAR* buffer = new TCHAR[len + 1];

		//多字节编码转换成宽字节编码  
		MultiByteToWideChar(CP_ACP, 0, str.c_str(), str.size(), buffer, len);

		//添加字符串结尾  
		buffer[len] = '\0';

		//删除缓冲区并返回值  
		result.append(buffer);

		delete[] buffer;
		return result;
	}

	//将wstring转换成string  
	static string wstring2string(wstring wstr)
	{
		string result;
		//获取缓冲区大小，并申请空间，缓冲区大小事按字节计算的  
		int len = WideCharToMultiByte(CP_ACP, 0, wstr.c_str(), wstr.size(), NULL, 0, NULL, NULL);
		char* buffer = new char[len + 1];

		//宽字节编码转换成多字节编码  
		WideCharToMultiByte(CP_ACP, 0, wstr.c_str(), wstr.size(), buffer, len, NULL, NULL);
		buffer[len] = '\0';

		//删除缓冲区并返回值  
		result.append(buffer);

		delete[] buffer;
		return result;
	}
};