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/*

 * Same as stringtok_h.txt, but doesn't (visiably) use C functions.

*/

#include 

// The std:: prefix is not used here, for readability, and a line like

// "using namespace std;" is dangerous to have in a header file.

template 

void

stringtok (Container &container, string const &in,

           const char * const delimiters = " \t\n")

{

    const string::size_type len = in.length();

          string::size_type i = 0;

    while ( i < len )

    {

        // eat leading whitespace

        i = in.find_first_not_of (delimiters, i);

        if (i == string::npos)

            return;   // nothing left but white space

        // find the end of the token

        string::size_type j = in.find_first_of (delimiters, i);

        // push token

        if (j == string::npos) {

            container.push_back (in.substr(i));

            return;

        } else

            container.push_back (in.substr(i, j-i));

        // set up for next loop

        i = j + 1;

    }

}