How I do Split in C++?

[Nasimov]

How I do split in C++ ?

Ex:

test1;;test2;;test3

How do I take those and stick those in variables ?

In perl would be

my($var1,$var2,$var3)=split(/;;/, $input);

How do I do that in c++ ?

Thanks.

[sunburnt]

Banged this out. Not sure if it's completely bug-free.

#include <string>
#include <vector>

std::vector<std::string> SplitStr(const std::string& text, const std::string& delimeter)
{
   std::size_t pos = 0;
   std::size_t oldpos = 0;
   std::size_t delimlen = delimeter.length();

   std::vector<std::string> result;
   while(pos != std::string::npos)
   {
      pos = text.find(delimeter, oldpos);
      result.push_back(text.substr(oldpos, pos - oldpos));
      oldpos = pos + delimlen;
   }

   return result;
   
}

Usage:

#include <string>
#include <vector>
#include <iostream>
using std::cout;
using std::endl;
using std::string;
using std::vector;

int main()
{
     string s = "a_token another_token more_token last_token";
     vector<string> results = SplitStr(s, " "); // split by spaces
     for(vector<string>::iterator i = results.begin();
          i < results.end();
          ++i)
     {
          cout << (*i) << endl;
     }


     return 0;

}

I'm sure you could also use a stringstream for this. Of course, it would be much faster and efficient to use the c-style strtok.

[Technocrat]

Seems like this exact question was asked not too long ago and I think Cornedbee answered it. The boost lib already has a built in string token lib that work pretty well and is fairly easy.