UTF-8-白红宇

UTF-8

阅读量：4973 次

发布时间：2019-06-12

本文共 1940 字，大约阅读时间需要 6 分钟。

0000-007F | 0xxxxxxx                   #UTF-8规定,若1字符=1字节,首位须为00080-07FF | 110xxxxx 10xxxxxx          #UTF-8规定,若1字符=2字节,高位前3位为110,低位前2位为100800-FFFF | 1110xxxx 10xxxxxx 10xxxxxx #UTF-8规定,若1字符=3字节,高位前4位为1110,后面低位前2位均为10 比如，张三的UTF-8编码为： E5 BC A0 E4 B8 89 E5 ----- 1110 0101 BC ----- 1011 1100 A0 ----- 1010 0000 E4 ----- 1110 0100 B8 ----- 1011 1000 89 ----- 1000 1001

#include 
     
      #include 
      
       using namespace std;std::string string_To_UTF8(const std::string & str){    int nwLen = ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), -1, NULL, 0);    wchar_t * pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴    ZeroMemory(pwBuf, nwLen * 2 + 2);    ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), str.length(), pwBuf, nwLen);    int nLen = ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, -1, NULL, NULL, NULL, NULL);    char * pBuf = new char[nLen + 1];    ZeroMemory(pBuf, nLen + 1);    ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);    std::string retStr(pBuf);    delete []pwBuf;    delete []pBuf;    pwBuf = NULL;    pBuf = NULL;    return retStr;}std::string UTF8_To_string(const std::string & str){    int nwLen = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, NULL, 0);    wchar_t * pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴    memset(pwBuf, 0, nwLen * 2 + 2);    MultiByteToWideChar(CP_UTF8, 0, str.c_str(), str.length(), pwBuf, nwLen);    int nLen = WideCharToMultiByte(CP_ACP, 0, pwBuf, -1, NULL, NULL, NULL, NULL);    char * pBuf = new char[nLen + 1];    memset(pBuf, 0, nLen + 1);    WideCharToMultiByte(CP_ACP, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);    std::string retStr = pBuf;    delete []pBuf;    delete []pwBuf;    pBuf = NULL;    pwBuf = NULL;    return retStr;}int main(){    string str1("迪丽热巴·阿凡提13800000000");    string str2 = string_To_UTF8(str1);    string str3 = UTF8_To_string(str2);    cout<
       
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