<?php

date_default_timezone_set("Europe/London");

function truncate ($string, $max = 50, $rep = '') {
    $leave = $max - strlen ($rep);
    return substr_replace($string, $rep, $leave);
}

print("BEGIN:VCALENDAR\n");
print("VERSION:2.0\n");
print("PRODID:-//hacksw/handcal//NONSGML v1.0//EN\n");

$file = fopen("php://stdin",'r');
while(!feof($file)) {

  $row = fgets($file);
  $data = explode("\t", $row);

  //Exam Code   Title   Date    Location    Seat    Start   Finish
  if(empty($data)||empty($data[6])) break;

  $start = strtotime($data[2]." ".$data[5]);
  $end = strtotime($data[2]." ".$data[6]);

  /*echo date("r", $start);
  echo date("r", $end);*/

  print("BEGIN:VEVENT\n");
  print("DTSTART:".date("Ymd", $start)."T".date("His", $start)."\n");
  print("DTEND:".date("Ymd", $end)."T".date("His", $end)."\n");
  print("SUMMARY:".truncate($data[1], 25, '...')." (".$data[0].")\n");
  print("DESCRIPTION:Title\t".$data[1]
                      ."\nCode\t".$data[0]
                      ."\nSeat\t".$data[4]
                      ."\nStart\t".$data[5]
                      ."\nEnd\t".$data[6]
                      ."\nRaw\n".$row);
  print("LOCATION:".$data[3]."\n");
  print("END:VEVENT\n");

}
fclose($file);

print("END:VCALENDAR\n");

?>