Simple Text Processing With C++ dos2unix Example

March 24, 2014

This is a very basic example of a dos2unix application. It demonstrates using std::remove_copy() and stream iterators to process streams from an input stream to an output stream.

#include <fstream>
#include <iostream>
#include <iterator>
#include <algorithm>
using namespace std;
int main(int argc, char** argv)
   string filename = "/dev/stdin";
   if (argc > 1)
      filename = argv[1];
   std::ifstream is(filename.c_str());
   if (!is.is_open())
      cerr << "error: could not open " << filename << endl;
      return 1;
   std::ofstream os("/dev/stdout");
   std::istreambuf_iterator<char> in(is), end;
   std::ostreambuf_iterator<char> out(os);
   remove_copy(in, end, out, '\r');
   return 0;

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