mirror of
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116 lines
4.0 KiB
PHP
116 lines
4.0 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Aiken format question importer.
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*
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* @package qformat
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* @subpackage aiken
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* @copyright 2003 Tom Robb <tom@robb.net>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Aiken format - a simple format for creating multiple choice questions (with
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* only one correct choice, and no feedback).
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*
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* The format looks like this:
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*
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* Question text
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* A) Choice #1
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* B) Choice #2
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* C) Choice #3
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* D) Choice #4
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* ANSWER: B
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*
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* That is,
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* + question text all one one line.
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* + then a number of choices, one to a line. Each line must comprise a letter,
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* then ')' or '.', then a space, then the choice text.
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* + Then a line of the form 'ANSWER: X' to indicate the correct answer.
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*
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* Be sure to word "All of the above" type choices like "All of these" in
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* case choices are being shuffled.
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*
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* @copyright 2003 Tom Robb <tom@robb.net>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class qformat_aiken extends qformat_default {
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public function provide_import() {
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return true;
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}
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public function readquestions($lines) {
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$questions = array();
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$question = $this->defaultquestion();
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$endchar = chr(13);
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foreach ($lines as $line) {
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$stp = strpos($line, $endchar, 0);
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$newlines = explode($endchar, $line);
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$foundQ = 0;
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$linescount = count($newlines);
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for ($i=0; $i < $linescount; $i++) {
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$nowline = trim($newlines[$i]);
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// Go through the array and build an object called $question
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// When done, add $question to $questions
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if (strlen($nowline) < 2) {
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continue;
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}
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if (preg_match('/^[A-Z][).][ \t]/', $nowline)) {
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// A choice. Trim off the label and space, then save
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$question->answer[] = htmlspecialchars(trim(substr($nowline, 2)), ENT_NOQUOTES);
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$question->fraction[] = 0;
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$question->feedback[] = '';
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continue;
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}
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if (preg_match('/^ANSWER:/', $nowline)) {
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// The line that indicates the correct answer. This question is finised.
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$ans = trim(substr($nowline, strpos($nowline, ':') + 1));
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$ans = substr($ans, 0, 1);
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// We want to map A to 0, B to 1, etc.
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$rightans = ord($ans) - ord('A');
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$question->fraction[$rightans] = 1;
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$questions[] = $question;
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// Clear array for next question set
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$question = $this->defaultquestion();
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continue;
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} else {
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// Must be the first line of a new question, since no recognised prefix.
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$question->qtype = MULTICHOICE;
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$question->name = htmlspecialchars(substr($nowline, 0, 50));
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$question->questiontext = htmlspecialchars($nowline);
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$question->single = 1;
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$question->feedback[] = '';
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}
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}
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}
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return $questions;
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}
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public function readquestion($lines) {
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//this is no longer needed but might still be called by default.php
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return;
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}
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}
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