function qformat_hotpot::process_jcloze in Quiz 6.6

Same name and namespace in other branches

1. 6.5 includes/moodle/question/format/hotpot/format.php \qformat_hotpot::process_jcloze()

1 call to qformat_hotpot::process_jcloze()

qformat_hotpot::readquestions in includes/moodle/question/format/hotpot/format.php

Parses an array of lines into an array of questions, where each item is a question object as defined by readquestion(). Questions are defined as anything between blank lines.

File

includes/moodle/question/format/hotpot/format.php, line 106

Class

qformat_hotpot

@package questionbank @subpackage importexport

Code

function process_jcloze(&$xml, &$questions) {

  // define default grade (per cloze gap)
  $defaultgrade = 1;
  $gap_count = 0;

  // detect old Moodles (1.4 and earlier)
  global $CFG, $db;
  $moodle_14 = false;
  if ($columns = $db
    ->MetaColumns("{$CFG->prefix}question_multianswer")) {
    foreach ($columns as $column) {
      if ($column->name == 'answers' || $column->name == 'positionkey' || $column->name == 'answertype' || $column->name == 'norm') {
        $moodle_14 = true;
      }
    }
  }

  // xml tags for the start of the gap-fill exercise
  $tags = 'data,gap-fill';
  $x = 0;
  while (($exercise = "[{$x}]['#']") && $xml
    ->xml_value($tags, $exercise)) {

    // there is usually only one exercise in a file
    if (method_exists($this, 'defaultquestion')) {
      $question = $this
        ->defaultquestion();
    }
    else {
      $question = new stdClass();
      $question->usecase = 0;

      // Ignore case
      $question->image = "";

      // No images with this format
    }
    $question->qtype = MULTIANSWER;
    $question->name = $this
      ->hotpot_get_title($xml, $x);
    $question->questiontext = $this
      ->hotpot_get_reading($xml);

    // setup answer arrays
    if ($moodle_14) {
      $question->answers = array();
    }
    else {
      global $COURSE;

      // initialized in questions/import.php
      $question->course = $COURSE->id;
      $question->options = new stdClass();
      $question->options->questions = array();

      // one for each gap
    }
    $q = 0;
    while ($text = $xml
      ->xml_value($tags, $exercise . "[{$q}]")) {

      // add next bit of text
      $question->questiontext .= $this
        ->hotpot_prepare_str($text);

      // check for a gap
      $question_record = $exercise . "['question-record'][{$q}]['#']";
      if ($xml
        ->xml_value($tags, $question_record)) {

        // add gap
        $gap_count++;
        $positionkey = $q + 1;
        $question->questiontext .= '{#' . $positionkey . '}';

        // initialize answer settings
        if ($moodle_14) {
          $question->answers[$q]->positionkey = $positionkey;
          $question->answers[$q]->answertype = SHORTANSWER;
          $question->answers[$q]->norm = $defaultgrade;
          $question->answers[$q]->alternatives = array();
        }
        else {
          $wrapped = new stdClass();
          $wrapped->qtype = SHORTANSWER;
          $wrapped->usecase = 0;
          $wrapped->defaultgrade = $defaultgrade;
          $wrapped->questiontextformat = 0;
          $wrapped->answer = array();
          $wrapped->fraction = array();
          $wrapped->feedback = array();
          $answers = array();
        }

        // add answers
        $a = 0;
        while (($answer = $question_record . "['answer'][{$a}]['#']") && $xml
          ->xml_value($tags, $answer)) {
          $text = $this
            ->hotpot_prepare_str($xml
            ->xml_value($tags, $answer . "['text'][0]['#']"));
          $correct = $xml
            ->xml_value($tags, $answer . "['correct'][0]['#']");
          $feedback = $this
            ->hotpot_prepare_str($xml
            ->xml_value($tags, $answer . "['feedback'][0]['#']"));
          if ($text) {

            // set score (0=0%, 1=100%)
            $fraction = empty($correct) ? 0 : 1;

            // store answer
            if ($moodle_14) {
              $question->answers[$q]->alternatives[$a] = new stdClass();
              $question->answers[$q]->alternatives[$a]->answer = $text;
              $question->answers[$q]->alternatives[$a]->fraction = $fraction;
              $question->answers[$q]->alternatives[$a]->feedback = $feedback;
            }
            else {
              $wrapped->answer[] = $text;
              $wrapped->fraction[] = $fraction;
              $wrapped->feedback[] = $feedback;
              $answers[] = (empty($fraction) ? '' : '=') . $text . (empty($feedback) ? '' : '#' . $feedback);
            }
          }
          $a++;
        }

        // compile answers into question text, if necessary
        if ($moodle_14) {

          // do nothing
        }
        else {
          $wrapped->questiontext = '{' . $defaultgrade . ':SHORTANSWER:' . implode('~', $answers) . '}';
          $question->options->questions[] = $wrapped;
        }
      }

      // end if gap
      $q++;
    }

    // end while $text
    // define total grade for this exercise
    $question->defaultgrade = $gap_count * $defaultgrade;
    $questions[] = $question;
    $x++;
  }

  // end while $exercise
}