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91 lines
2.7 KiB
PHP
91 lines
2.7 KiB
PHP
<?PHP // $Id$
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////////////////////////////////////////////////////////////////////////////
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/// MISSING WORD FORMAT
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///
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/// This Moodle class provides all functions necessary to import and export
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/// one-correct-answer multiple choice questions in this format:
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///
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/// As soon as we begin to explore our body parts as infants
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/// we become students of {=anatomy and physiology ~reflexology
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/// ~science ~experiment}, and in a sense we remain students for life.
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///
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/// Each answer is separated with a tilde ~, and the correct answer is
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/// prefixed with an equals sign =
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///
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////////////////////////////////////////////////////////////////////////////
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require("default.php");
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class quiz_file_format extends quiz_default_format {
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function readquestion($lines) {
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/// Given an array of lines known to define a question in
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/// this format, this function converts it into a question
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/// object suitable for processing and insertion into Moodle.
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$question = NULL;
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$text = implode($lines, " ");
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/// Find answer section
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$answerstart = strpos($text, "{");
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if ($answerstart === false) {
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if ($this->displayerrors) {
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echo "<P>$text<P>Could not find a {";
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}
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return false;
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}
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$answerfinish = strpos($text, "}");
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if ($answerfinish === false) {
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if ($this->displayerrors) {
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echo "<P>$text<P>Could not find a }";
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}
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return false;
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}
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$answerlength = $answerfinish - $answerstart;
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$answertext = substr($text, $answerstart + 1, $answerlength - 1);
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/// Save the new question text
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$question->questiontext = addslashes(substr_replace($text, "_____", $answerstart, $answerlength+1));
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$question->name = $question->questiontext;
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/// Parse the answers
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$answers = explode("~", $answertext);
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if (! count($answers)) {
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if ($this->displayerrors) {
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echo "<P>No answers found in $answertext";
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}
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return false;
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}
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$answers = $this->swapshuffle($answers);
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foreach ($answers as $key => $answer) {
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$answer = trim($answer);
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if ($answer[0] == "=") {
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$question->fraction[$key] = 1;
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$answer = substr($answer, 1);
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} else {
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$question->fraction[$key] = 0;
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}
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$question->answer[$key] = addslashes($answer);
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$question->feedback[$key] = "";
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}
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$question->qtype = MULTICHOICE;
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$question->single = 1; // Only one answer is allowed
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$question->image = ""; // No images with this format
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return $question;
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}
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}
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?>
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