// Copyright 2005 Daniel Cer (daniel.cer@cs.colorado.edu)
//
// This work is licensed under the Creative Commons Attribution-NonCommercial-
// ShareAlike License. To view a copy of this license, visit 
// http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to 
// Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 
// 94105, USA.

#include <iostream>
#include <string>
#include <dirent.h> // POSIX compatible
#include <errno.h>  // strerror

using namespace std;

bool list_directory(const string &dir_path) {
  DIR *dir_h;
  if ((dir_h = opendir(dir_path.c_str())) == NULL) return false;
  
  cout<<"Contents of \""<<dir_path<<"\":"<<endl;
  for (dirent *entry; entry = readdir(dir_h);) cout<<"\t"<<entry->d_name<<endl;
  return true;
}

int main(int argc, char *argv[]) { 
  if (argc != 2) {  
     cerr<<"Usage:\n\t"<<argv[0]<<" (directory to list)"<<endl;
     return -1;
  }
  
  if (!list_directory(argv[1])) {
     cerr<<argv[0]<<": "<<strerror(errno)<<endl; return -1;
  }
  return 0;
}