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#pike __REAL_VERSION__ 
 
//! The MIME content types this class can filter. 
constant contenttypes = ({ }); 
 
//! 
.Output filter(Standards.URI uri, string|Stdio.File data, 
              string content_type, mixed ... more); 
 
 
string my_popen(array(string) args, string|void cwd, int|void wait_for_exit, 
                array(string)|void watchdog_args) 
  // A smarter version of Process.popen: No need to quote arguments. 
{     
  Stdio.File pipe0 = Stdio.File(); 
  Stdio.File pipe1 = pipe0->pipe(Stdio.PROP_IPC); 
  if(!pipe1) 
    if(!pipe1) error("my_popen failed (couldn't create pipe).\n"); 
  mapping setup = ([ "env":getenv(), "stdout":pipe1, "nice": 20 ]); 
  if (cwd) 
    setup["cwd"] = cwd; 
  Process.create_process proc = Process.create_process(args, setup); 
  pipe1->close(); 
 
  //  Launch watchdog if provided (requires wait_for_exit) 
  Process.Process watchdog; 
  if (wait_for_exit && watchdog_args) { 
    //  Insert pid of running process where caller used "%p" 
    array(string) wd_args = 
      replace(watchdog_args + ({ }), "%p", (string) proc->pid()); 
    watchdog = Process.spawn_pike(wd_args); 
  } 
   
  string result = pipe0->read(); 
  if(!result) 
    error("my_popen failed with error "+pipe0->errno()+".\n"); 
  pipe0->close(); 
  if (wait_for_exit) 
    proc->wait(); 
   
  if (watchdog) 
    watchdog->kill(9); 
   
  return result; 
}