voting/foundation.gnome.org/vote/blt.wml

<?php
require_once ("include/election-sql.php");

/* .blt file format, used by the electoral reform society.
 * Format is as follows:
 * Line 1: N candidates, M seats
4 2
 * Following lines (one per ballot): Each vote has a weight of 1, followed by 
 * the candidates in order of preference, terminated by 0. Candidates are 
 * specified in order after the ballots, starting with candidate 1.
1 p1 p2 p3 p4 ... 0
...
 * End of ballots marker:
0
 * List of candidates
"Dave Neary"
"Niels Breet"
"Henri Bergius"
"Andre Klapper"
 * Election title
"Favourite maemo.org staff member 2009"
 */

// We'll be outputting a test file
header('Content-type: text/plain');

// It will be called election.blt
header('Content-Disposition: attachment; filename="election.blt"');

$display = TRUE;
$error = "";

$handle = elec_sql_open ();
if ($handle === FALSE) {
  $error .= "Can not open the database.\n";
  $display = FALSE;
}

if ($display && isset ($_GET["election_id"]) && is_numeric ($_GET["election_id"]))
  $election_id = $_GET["election_id"];
else {
  $election_id = -1;
  $error .= "No election specified.\n";
  $display = FALSE;
}

if ($display && $election_id >= 0) {
  $election = elec_get_election ($handle, $election_id);
  if ($election === FALSE) {
    $error .= "The specified election/referendum does not exist.\n";
    $display = FALSE;
  } else if (!elec_election_has_ended ($election)) {
    $error .= "The voting period for the specified ".elec_election_get_type ($election)." starts on ".$election["voting_start"]." (UTC) and ends on ".$election["voting_end"]." (UTC). It is not possible to see the results now.\n";
    $display = FALSE;
  }
}

/* Get election, choices, anon tokens & votes */
if ($display) {
  $choices = elec_choices_get ($handle, $election_id);
  if ($choices === FALSE) {
    $error .= "The ".elec_election_get_type ($election)." is not properly set up.\n";
    $display = FALSE;
  }
}

if (isset ($election) && $election !== FALSE) {
  // Header: # candidates, # seats
  echo count($choices)." ".$election["choices_nb"]."\n";
}


if ($display) {
  $anon_tokens = elec_get_anon_tokens_for_election ($handle, $election_id);
  if ($anon_tokens === FALSE) {
    $error .= "Can not get the anonymous tokens for this ".elec_election_get_type ($election).".\n";
    $display = FALSE;
  }
}


if ($display) {
  $choices_name = array ();
  $choices_pos = array ();
  $index=1;
  // Record names and positions of candidates
  foreach ($choices as $choice) {
    $choices_pos[$choice["id"]] = $index++;
  }

  // One line per ballot: weight, preferences, 0 to end. 
  foreach ($anon_tokens as $anon_token) {
    $votes = elec_get_votes_for_anon_token ($handle, $anon_token["id"]);
    if ($votes === FALSE) {
      echo "1 999 0\n";
      $error .= "Can not get votes for anonymous token ".$anon_token["anon_token"]."\n";
    } else if (count ($votes) == 0) {
      echo "1 0\n";
    } else {
      echo "1 ";
      foreach ($votes as $vote) {
        if (array_key_exists ($vote["choice_id"], $choices_pos))
          echo $choices_pos[$vote["choice_id"]]." ";
        else {
          echo "999 ";
          $error .= "There was an unkown vote for anonymous token ".$anon_token["anon_token"].": ".$vote["choice_id"]."\n";
        }
      }
      echo "0\n";
    }
  }

  // end of ballots marker 
  echo "0\n";

  // Names of candidates
  foreach ($choices as $choice) {
    echo "\"".$choice["choice"]."\"\n";
  }

  // Title of election
  echo "\"".$election["name"]."\"\n";

}

if (isset ($error) && $error != "") {
  echo "".$error."\n";
  echo "If you don't understand the error, you should probably contact the Maemo Community mailing list, which can be reached at maemo-community@maemo.org.\n";
}

if (isset ($handle))
  elec_sql_close ($handle);

?>