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Added xml format import. First pass for testing.
Just multiple choice and true/false at the moment and needs further testing and polishing.
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thepurpleblob
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1 changed files with 237 additions and 3 deletions
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@ -6,8 +6,196 @@
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//////////////////////////////////////////////////////////////////////////
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// Based on default.php, included by ../import.php
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require_once( "$CFG->libdir/xmlize.php" );
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class quiz_file_format extends quiz_default_format {
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// IMPORT FUNCTIONS START HERE
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function trans_format( $name ) {
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// translate text format string to its internal code
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$name = trim($name);
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if ($name=='moodle_auto_format') {
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$id = 0;
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}
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elseif ($name=='html') {
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$id = 1;
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}
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elseif ($name=='plain_text') {
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$id = 2;
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}
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elseif ($name=='wiki_like') {
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$id = 3;
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}
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elseif ($name=='markdown') {
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$id = 4;
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}
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else {
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$id = 0; // or maybe warning required
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}
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return $id;
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}
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function trans_single( $name ) {
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// translate single string to its internal format
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$name = trim($name);
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if ($name=="true") {
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$id = 1;
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}
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elseif ($name=="false") {
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$id = 0;
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}
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else {
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$id = 0; // or maybe warning required
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}
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return $id;
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}
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function import_text( $text ) {
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// handle xml 'text' element
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$data = $text[0]['#'];
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$data = html_entity_decode( $data );
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return addslashes(trim( $data ));
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}
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function import_headers( $question ) {
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// read bits that are common to all questions
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// this routine initialises the question object
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$name = $this->import_text( $question['#']['name'][0]['#']['text'] );
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$qtext = $this->import_text( $question['#']['questiontext'][0]['#']['text'] );
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$qformat = $question['#']['questiontext'][0]['@']['format'];
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$image = $question['#']['image'][0]['#'];
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$qo = null;
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$qo->name = $name;
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$qo->questiontext = $qtext;
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$qo->questiontextformat = $this->trans_format( $qformat );
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$qo->image = $image;
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return $qo;
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}
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function import_answer( $answer ) {
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// import answer part of question
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$fraction = $answer['@']['fraction'];
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$text = $this->import_text( $answer['#']['text']);
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$feedback = $this->import_text( $answer['#']['feedback'][0]['#']['text'] );
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$ans = null;
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$ans->answer = $text;
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$ans->fraction = $fraction / 100;
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$ans->feedback = $feedback;
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return $ans;
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}
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function import_multichoice( $question ) {
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// import multichoice type questions
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// get common parts
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$qo = $this->import_headers( $question );
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// 'header' parts particular to multichoice
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$qo->qtype = MULTICHOICE;
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$single = $question['#']['single'][0]['#'];
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$qo->single = $this->trans_single( $single );
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// run through the answers
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// $qo->answer = array();
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$answers = $question['#']['answers'][0]['#']['answer'];
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$a_count = 0;
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foreach ($answers as $answer) {
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$ans = $this->import_answer( $answer );
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// $qo->answer[] = $ans;
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$qo->answer[$a_count] = $ans->answer;
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$qo->fraction[$a_count] = $ans->fraction;
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$qo->feedback[$a_count] = $ans->feedback;
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++$a_count;
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}
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return $qo;
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}
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function import_truefalse( $question ) {
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// import true/false type question
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// get common parts
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$qo = $this->import_headers( $question );
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// 'header' parts particular to true/false
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$qo->qtype = TRUEFALSE;
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// get answer info
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$answers = $question['#']['answer'];
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$fraction0 = $answers[0]['@']['fraction'];
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$feedback0 = $this->import_text($answers[0]['#']['feedback'][0]['#']['text']);
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$fraction1 = $answers[1]['@']['fraction'];
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$feedback1 = $this->import_text($answers[1]['#']['feedback'][0]['#']['text']);
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// sort out which is true and build object accordingly
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if ($fraction0==100) { // then 0 index is true
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$qo->answer = 1;
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$qo->feedbacktrue=$feedback0;
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$qo->feedbackfalse=$feedback1;
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}
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else {
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$qo->answer = 0;
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$qo->feedbacktrue = $feedback1;
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$qo->feedbackfalse = $feedback0;
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}
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return $qo;
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}
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function readquestions($lines) {
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// parse the array of lines into an array of questions
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// this *could* burn memory - but it won't happen that much
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// so fingers crossed!
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// we just need it as one big string
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$text = implode($lines, " ");
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unset( $lines );
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// this converts xml to big nasty data structure
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// print_r it if you want to see what it looks like!
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$xml = xmlize( $text );
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// set up array to hold all our questions
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$questions = array();
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// iterate through questions
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foreach ($xml['quiz']['#']['question'] as $question) {
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$question_type = $question['@']['type'];
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echo "<b>question type = $question_type</b>";
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if ($question_type=='multichoice') {
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$qo = $this->import_multichoice( $question );
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}
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elseif ($question_type=='truefalse') {
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$qo = $this->import_truefalse( $question );
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}
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else {
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echo "<p>Question type $question_type not currently supported for xml import</p>";
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$qo = null;
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}
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// stick the result in the $questions array
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$questions[] = $qo;
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}
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return $questions;
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}
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// EXPORT FUNCTIONS START HERE
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function indent_xhtml($source, $indenter = ' ') {
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// xml tidier-upper
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// (c) Ari Koivula http://ventionline.com
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@ -126,7 +314,48 @@ function get_qtype( $type_id ) {
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$name = 'cloze';
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break;
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default:
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$name = 'Unknown';
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$name = 'unknown';
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}
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return $name;
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}
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function get_format( $id ) {
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// translates question text format id number into something sensible
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switch( $id ) {
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case 0:
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$name = "moodle_auto_format";
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break;
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case 1:
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$name = "html";
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break;
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case 2:
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$name = "plain_text";
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break;
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case 3:
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$name = "wiki_like";
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break;
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case 4:
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$name = "markdown";
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break;
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default:
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$name = "unknown";
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}
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return $name;
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}
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function get_single( $id ) {
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// translate single value into something sensible
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switch( $id ) {
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case 0:
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$name = "false";
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break;
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case 1:
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$name = "true";
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break;
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default:
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$name = "unknown";
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}
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return $name;
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}
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@ -164,10 +393,12 @@ function writequestion( $question ) {
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// add opening tag
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$question_type = $this->get_qtype( $question->qtype );
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$name_text = $this->writetext( $question->name );
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$qtformat = $this->get_format($question->questiontextformat);
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$question_text = $this->writetext( $question->questiontext );
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$expout .= "<question type=\"$question_type\">\n";
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$expout .= "<name>".$this->writetext($name_text)."</name>\n";
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$expout .= "<questiontext>".$this->writetext($question_text)."</questiontext>\n";
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$expout .= "<questiontext format=\"$qtformat\">".$this->writetext($question_text)."</questiontext>\n";
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$expout .= "<image>".$question->image."</image>\n";
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// output depends on question type
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switch($question->qtype) {
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@ -188,13 +419,16 @@ function writequestion( $question ) {
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$expout .= "</answer>\n";
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break;
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case MULTICHOICE:
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$expout .= "<single>".$this->get_single($question->single)."</single>\n";
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$expout .= "<answers>\n";
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foreach($question->answers as $answer) {
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$percent = round( $answer->fraction * 100 );
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$percent = $answer->fraction * 100;
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$expout .= "<answer fraction=\"$percent\">\n";
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$expout .= $this->writetext( $answer->answer );
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$expout .= "<feedback>".$this->writetext( $answer->feedback )."</feedback>\n";
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$expout .= "</answer>\n";
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}
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$expout .= "</answers>\n";
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break;
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case SHORTANSWER:
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foreach($question->answers as $answer) {
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