copy on write

 1 yl::string CBaseAutopProcessor::AddAuthorizedInfo(const yl::string & strOriginalUrl,
 2         const yl::string & strUserName, const yl::string & strPassword)
 3 {
 4     yl::string strUrl = strOriginalUrl;//cow exist error
 5 
 6     if (strOriginalUrl.empty()
 7             || strUserName.empty())
 8     {
 9         return strUrl;
10     }
11 
12     char * pBuf = (char *) strUrl.c_str();
13     char * pTemp = NULL;
14     if ((pTemp = strstr(pBuf, "://")) != NULL)
15     {
16         *pTemp = ‘\0‘;  //cow will cause strUrl and strOriginalUrl change
17         pTemp += 3;
18 
19         // 加入用户名和密码
20         char bufURL[512] = {0};
21         sprintf(bufURL, "%s://%s:%s@%s", pBuf, strUserName.c_str(), strPassword.c_str(), pTemp);
22         strUrl = bufURL;
23     }
24 
25     return strUrl;
26 }