stringbuf.cpp

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#include <iostream>   // for cout, endl
#include <sstream>    // for istringstream, ostringstream
#include <string>     // for string
 
#include <examples.h>
 
 
int main ()
{
    // create a read/write string-stream object on tiny char
    // and attach it to an ostringstream object
    std::ostringstream out_1 (std::ios::in | std::ios::out);
 
    // tie the istream object to the ostringstream object
    std::istream in_1 (out_1.rdbuf ());   
 
    // output to out_1
    out_1 << "Here is the first ouput";
 
    // create a string object on tiny char 
    std::string string_ex = "L'heure est grave!";
 
    // open a read only stringstream object and initialize it
    std::istringstream in_2 (string_ex);
 
    // output in_1 to the standard output
    std::cout << in_1.rdbuf () << std::endl;
 
    // reposition in_1 at the beginning
    in_1.seekg (0);
 
    // output in_2 to the standard output
    std::cout << in_2.rdbuf () << std::endl;
 
    // reposition in_2 at the beginning
    in_2.seekg (0);
 
    // get the current put position (equivalent to out_1.tellp ())
    std::stringbuf::pos_type pos =
        out_1.rdbuf ()->pubseekoff (0, std::ios::cur, std::ios::out);
 
    // append the content of the stringbuf pointed to by in_2
    // to the one  pointed at by out_1
    out_1 << ' ' << in_2.rdbuf ();
 
    // output in_1 to the standard output
    std::cout << in_1.rdbuf () << std::endl;
 
    // position the get sequence (equivalent to in_1.seekg (pos))
    in_1.rdbuf ()->pubseekpos (pos, std::ios::in);
 
    // output "L'heure est grave!"
    std::cout << in_1.rdbuf () << std::endl;  
 
    return 0;
}