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how to get the extension in ".txt" with a date format time?

Posted on 2008-09-29
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Last Modified: 2010-04-01
Hello EE,
i have some problem with this code
how to get "myfile-somerandomnumberhere-Mon_sep_29_21:59:01_2008.txt"?
std::stringstream ssFilename; //nuove variabile per uploaddare il file
        time( &aclock );                 /* Get time in seconds */
 
        newtime = localtime( &aclock );  /* Convert time to struct */
                                         /* tm form */
 
        ssFilename
        << asctime(newtime)
        << "-"
        
        << "myfile-"
        << acUserName// add user name
        << "-"
        << std::setw(5)
        << std::setfill('0')
        << (rand() % 100000)
        << ".txt";
 
        std::string const &  sFilename = ssFilename.str();

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Question by:kagami01
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13 Comments
 
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Accepted Solution

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Deepu Abraham earned 450 total points
ID: 22602546
You need to rearranage the code

   // Seed the random-number generator with the current time so that
   // the numbers will be different every time we run.
   srand( (unsigned)time( NULL ) );
 
	ssFilename
		<< "myfile-"
		<< (rand() % 100000)
		<< "-"
		<< "acUserName"// add user name
		<< "-"
        << asctime(newtime)
        << ".txt";
	std::string const &  sFilename = ssFilename.str();
	cout << sFilename.c_str();

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Expert Comment

by:Infinity08
ID: 22603502
You probably also want to replace the spaces in the filename with underscores after constructing it ...
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Author Comment

by:kagami01
ID: 22604086
the code abouve here doesn't uploads the file anymore...
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LVL 11

Expert Comment

by:Deepu Abraham
ID: 22604230
Try this code...

   // Seed the random-number generator with the current time so that
   // the numbers will be different every time we run.
   srand( (unsigned)time( NULL ) );
 
   	string str_newtime = asctime(newtime) ;
 
	string str_old = " ";
	string str_new = "_";
  
	 string str_time = str_newtime;
     int pos1 = 0; 
     int pos2 = 0;
     while ((pos1 = str_time.find(str_old, pos2)) != string::npos)
     {
           str_time.replace(pos1, str_old.length(), str_new);
           pos2 = pos1+1;
     }
 
	ssFilename
		<< myfile-
		<< (rand() % 100000)
		<< "-"
		<< "acUserName"// add user name
		<< "-"
        << str_time
        << ".txt";
 
 
	
	std::string const &  sFilename = ssFilename.str();
 
	
	cout << sFilename.c_str();
		cout <<"\n";

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Expert Comment

by:Deepu Abraham
ID: 22604243
Oops typo....sorry please read this as

      ssFilename
            << myfile<<"-"  //------------------------>Changed here
            << (rand() % 100000)
            << "-"
            << "acUserName"// add user name
            << "-"
        << str_time
        << ".txt";
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Author Comment

by:kagami01
ID: 22604266
i meant it upload the file but the extension is not ".txt"
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LVL 53

Expert Comment

by:Infinity08
ID: 22604295
This version of replace is probably a better fit for replacing all spaces with underscores (in one call) :

        http://www.cplusplus.com/reference/algorithm/replace.html

;)
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Expert Comment

by:Deepu Abraham
ID: 22605214
What is the extn it shows? is there any other "." in the string other than ".txt"
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Author Comment

by:kagami01
ID: 22605751
i got this file name extension
"myfile-user1-1222785145Tue Sep 30 16:32:25 2008"
with no .txt extension file

i put here my code again

ps
by the way if i go on my ftp web space i can read the file but i cannot delete it modify it and so on cause it contains some strange symbol
DWORD WINAPI ftp_upload(LPVOID lpParam)
{ 
        struct tm *newtime;
        time_t aclock;
        
        char acUserName[UNLEN + 1];
        DWORD dwNameLen = UNLEN + 1;
        GetUserName(acUserName,&dwNameLen);
       
            
 /////////////////////////////////////////////////////////////////////
 
    //this part of code is cool!!!       
     
/////////////////////////////////////////////////////////////////////	
      
      
    
    HINTERNET hCon, sFtp;
    
    
    while(true)
    {
             
        std::stringstream ssFilename; / 
        time( &aclock );                 /* Get time in seconds */
 
        newtime = localtime( &aclock );  /* Convert time to struct */
                                         /* tm form */
 
        ssFilename
        
        << "myfile-"
        << acUserName // add user name
        << "-"
        << time(NULL)
        << asctime(newtime)
        << "-"
        << std::setw(5)
        << std::setfill('0')
        << (rand() % 100000)
        << ".txt";
                 
        string const sFilename = ssFilename.str();

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Author Comment

by:kagami01
ID: 22605792
i got the ".txt" extension cnhanging my code like this...see below

and  now my file is "lmyfile-user1-122278538700041.txt""

i think the problem is  the time format

DWORD WINAPI ftp_upload(LPVOID lpParam)
{ 
        struct tm *newtime;
        time_t aclock;
        
        char acUserName[UNLEN + 1];
        DWORD dwNameLen = UNLEN + 1;
        GetUserName(acUserName,&dwNameLen);
       
            
 /////////////////////////////////////////////////////////////////////
 
    //this part of code is cool!!!       
     
/////////////////////////////////////////////////////////////////////	
      
      
    
    HINTERNET hCon, sFtp;
    
    
    while(true)
    {
             
        std::stringstream ssFilename;
        time( &aclock );                 /* Get time in seconds */
 
        newtime = localtime( &aclock );  /* Convert time to struct */
                                         /* tm form */
 
        ssFilename
        
        << "myfile-"
        << acUserName // add user name
        << "-"
        << time(NULL)
        << std::setw(5)
        << std::setfill('0')
        << (rand() % 100000)
        << ".txt";
                
 
        string const sFilename = ssFilename.str()

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Expert Comment

by:Infinity08
ID: 22612470
>> i think the problem is  the time format

What do you mean ?

Btw, don't you want to replace the spaces with underscores ?
0
 

Author Comment

by:kagami01
ID: 22612765
yeah because my time format was HH:MM:SS YYYY MM DD
so in ftp webspace the ":" and the " " character are not accepted.
for example i have uploaded the follw file "myfile-12:01:00 2008 10 01"
if i want to change this file name direclty from my ftp webspace ,i got an error as follows "you cannot change the name of this file because the format is not accepted".
Anyway i have already solved the problem.Please see my other asked question.
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LVL 11

Expert Comment

by:Deepu Abraham
ID: 22613137
Did any of our answers/suggestions helped you in soulving your problem? If yes, I would ask you to close this by assiging points ..Thanks,
DeepuAbrahamK
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