Windows编程下， ANSI、UTF8、Unicode之间的转换

最新推荐文章于 2021-05-29 13:43:52 发布

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最新推荐文章于 2021-05-29 13:43:52 发布

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分类专栏： windows

本文链接：https://blog.youkuaiyun.com/Torchzhang123/article/details/51920066

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本文提供了四个实用的函数，用于在不同字符编码之间进行转换：从多字节字符集到宽字符串、从宽字符串到多字节字符集、从UTF-8到宽字符串以及从宽字符串到UTF-8。这些函数在C++中实现，并使用了标准库和Windows API来确保跨平台兼容性和准确性。

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std::wstring MultiBytesToWString(const char* lpcszString)
{
	if(lpcszString == NULL)
		return L"";
	int unicodeLen = ::MultiByteToWideChar(CP_ACP,0,lpcszString,-1,NULL,0);
	wchar_t* pUnicode = new wchar_t[unicodeLen + 1];
	memset((void*)pUnicode, 0 ,(unicodeLen + 1) * sizeof(wchar_t));
	::MultiByteToWideChar(CP_ACP,0,lpcszString,-1,(LPWSTR)pUnicode, unicodeLen);
	std::wstring wString = (wchar_t*)pUnicode;
	delete[] pUnicode;
	return wString;
}

std::string WStringToMultiBytes(const wchar_t* lpwcszWString)
{
	if(lpwcszWString == NULL)
		return "";
	int mbLen = ::WideCharToMultiByte(CP_ACP,0,lpwcszWString,-1,NULL,0,NULL,NULL);
	char *pMBText = new char[mbLen + 1];
	memset((void*)pMBText, 0, (mbLen + 1) * sizeof(char));
	::WideCharToMultiByte(CP_ACP,0,lpwcszWString,0,pMBText,mbLen,NULL,NULL);
	std::string strTemp(pMBText);
	delete[] pMBText;
	return strTemp;
}

std::wstring UTF8ToWString(const char* lpcszString) 
{
	if(lpcszString == NULL)
		return L"";
	int unicodeLen = MultiByteToWideChar(CP_UTF8,0,lpcszString,-1,NULL,0);
	wchar_t *pUnicode = new wchar_t[unicodeLen + 1];
	memset((void*)pUnicode, 0, (unicodeLen + 1) * sizeof(wchar_t));
	::MultiByteToWideChar(CP_UTF8,0,lpcszString,-1,(LPWSTR)pUnicode, unicodeLen);
	std::wstring wString = (wchar_t*)pUnicode;
	delete[] pUnicode;

	return wString;
}

std::string WStringToUTF8(const wchar_t* lpwcszString)
{
	if(lpwcszString == NULL)
		return "";
	int utf8Len = ::WideCharToMultiByte(CP_UTF8,0,(LPWSTR)lpwcszString,-1,NULL,0,NULL,NULL);
	char *pUtf8Text = new char[utf8Len + 1];
	memset((void*)pUtf8Text, 0, (utf8Len + 1) * sizeof(char));
	::WideCharToMultiByte(CP_UTF8, 0, (LPWSTR)lpwcszString, -1, pUtf8Text, utf8Len, NULL, NULL);
	std::string strTemp(pUtf8Text);
	delete[] pUtf8Text;

	return strTemp;
}