c++中gbk和utf-8互转
程序员文章站
2022-03-31 19:52:34
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gbk转utf-8
char* G2U(const char* gb2312)
{
ASSERT(gb2312!=NULL);
int len = MultiByteToWideChar(CP_ACP, 0, gb2312, -1, NULL, 0);
wchar_t* wstr = new wchar_t[len + 1];
memset(wstr, 0, len + 1);
MultiByteToWideChar(CP_ACP, 0, gb2312, -1, wstr, len);
len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
char* str = new char[len + 1];//需要在外面析构,可以改成传指针进来的方式
memset(str, 0, len + 1);
WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, len, NULL, NULL);
if (wstr) delete[] wstr;
return str;
}
utf-8转gbk
const char* UTF8_To_GBK(const char* source, char* pcDes)
{
enum { GB2312 = 936 };
//unsigned long len;
int len=-1;
len = ::MultiByteToWideChar(CP_UTF8, NULL, source, -1, NULL, NULL);
if (len == 0)
return NULL;
wchar_t *wide_char_buffer = new wchar_t[len];
::MultiByteToWideChar(CP_UTF8, NULL, source, -1, wide_char_buffer, len);
len = ::WideCharToMultiByte(GB2312, NULL, wide_char_buffer, -1, NULL, NULL, NULL, NULL);
if (len == 0)
{
delete[] wide_char_buffer;
return NULL;
}
char *multi_byte_buffer = new char[len];
::WideCharToMultiByte(GB2312, NULL, wide_char_buffer, -1, multi_byte_buffer, len, NULL, NULL);
strcpy(pcDes, multi_byte_buffer);
//std::string dest(multi_byte_buffer);
delete[] multi_byte_buffer;
delete[] wide_char_buffer;
return pcDes;
}
建议
上面两个函数可以实现功能,但都不是好的写法。建议将函数参数写成memcpy那样