mirror of
https://github.com/moodle/moodle.git
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505 lines
18 KiB
PHP
Executable File
505 lines
18 KiB
PHP
Executable File
<?PHP // $Id$
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////////////////////////////////////////////////////////////////////
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/// Class for importing course test manager questions. //
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/// //
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/// //
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////////////////////////////////////////////////////////////////////
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// Included by ../import.php
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class quiz_file_format {
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function importpreprocess($category) {
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$this->category = $category; // Important
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return true;
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}
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function importprocess($filename) {
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global $CFG,$QUIZ_FILE_FORMAT,$strimportquestions,$form,$question_category,$category,$course,$THEME,
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$hostname, $mdapath, $mdbpath;
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if ((PHP_OS == "Linux") and isset($hostname)) {
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$hostname = trim($hostname);
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// test the ODBC socket server connection
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// if failure, unset hostname and set hostname_access_error
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$question_categories = $this->getquestioncategories($mdbpath, $mdapath, $hostname);
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if (!$question_categories) {
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$hostname_access_error = $hostname . " ";
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unset($hostname);
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} else {
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$hostname_access_error = 0;
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}
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}
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if ((PHP_OS == "Linux") and !isset($hostname)) {
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// copy the file to a semi-permanent location
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if (! $basedir = make_upload_directory("$course->id")) {
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error("The site administrator needs to fix the file permissions for the data directory");
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}
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if (!isset($hostname_access_error)) {
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$bname=basename($filename);
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$cleanfilename = clean_filename($bname);
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if ($cleanfilename) {
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$newfile = "$basedir/$cleanfilename";
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if (move_uploaded_file($filename, $newfile)) {
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chmod($newfile, 0666);
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} else {
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notify(get_string("uploadproblem", "", $filename));
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}
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}
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$filename = $newfile;
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}
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print_heading_with_help($strimportquestions, "import", "quiz");
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print_simple_box_start("center", "", "$THEME->cellheading");
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if ($hostname_access_error) { notify("couldn't connect to ODBC Socket Server on " . $hostname_access_error); }
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echo "<form method=\"post\" action=\"import.php\">";
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echo "<table cellpadding=5>";
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echo "<tr><td align=right>";
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echo "What is the hostname or IP address of the ODBC Socket Server:</td><td>";
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echo " <input name=\"hostname\" type=\"text\" size=\"50\" value=\"".stripslashes($hostname_access_error)."\">";
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echo " <input name=\"filename\" type=\"hidden\" value=\"".$filename."\">";
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echo " <input name=\"category\" type=\"hidden\" value=\"".$category->id."\">";
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echo " <input name=\"format\" type=\"hidden\" value=\"".$form->format."\">";
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echo "</td><td> </td></tr>";
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echo "<tr><td align=right>";
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echo "What is the location of the database (.mdb file) on the Socket Server:</td><td>";
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echo " <input name=\"mdbpath\" type=\"text\" size=\"50\" value=\"".stripslashes($mdbpath)."\">";
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echo "</td><td> </td></tr>";
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echo "<tr><td align=right>";
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echo "What is the location of the system database (System.mda file) on the Socket Server:</td><td>";
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echo " <input name=\"mdapath\" type=\"text\" size=\"50\" value=\"".stripslashes($mdapath)."\">";
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echo "</td><td> </td></tr>";
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echo "<tr><td> </td><td>";
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echo " <input type=submit name=save value=\"Connect to Server\">";
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echo "</td></tr>";
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echo "</table>";
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echo "</form>";
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print_simple_box_end();
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print_footer($course);
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exit;
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}
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// we get here if running windows or after connect to ODBC socket server on linux
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//
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// this generates the page to choose categories of questions to import
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//
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if (!isset($question_category)) {
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if (PHP_OS == "WINNT") {
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// copy the file to a semi-permanent location
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if (! $basedir = make_upload_directory("$course->id")) {
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error("The site administrator needs to fix the file permissions for the data directory");
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}
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$bname=basename($filename);
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$cleanfilename = clean_filename($bname);
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if ($cleanfilename) {
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$newfile = "$basedir/$cleanfilename";
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if (move_uploaded_file($filename, $newfile)) {
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chmod($newfile, 0666);
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} else {
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notify(get_string("uploadproblem", "", $filename));
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}
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}
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$filename = $newfile;
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}
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// end of file copy
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// don't have to do this on linux, since it's alreay been done in the test above
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if (PHP_OS == "WINNT") { $question_categories = $this->getquestioncategories($filename); }
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// print the intermediary form
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if (!$categories = quiz_get_category_menu($course->id, true)) {
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error("No categories!");
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}
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print_heading_with_help($strimportquestions, "import", "quiz");
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print_simple_box_start("center", "", "$THEME->cellheading");
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echo "<form method=\"post\" action=\"import.php\">";
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echo "<table cellpadding=5>";
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echo "<tr><td align=right>";
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echo "Choose a category of questions to import:</td><td>";
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asort($question_categories);
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choose_from_menu($question_categories, "question_category","All Categories","All Categories", "", "allcategories");
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echo " <input name=\"filename\" type=\"hidden\" value=\"".$filename."\">";
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echo " <input name=\"category\" type=\"hidden\" value=\"".$category->id."\">";
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echo " <input name=\"format\" type=\"hidden\" value=\"".$form->format."\">";
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if (PHP_OS == "Linux") {
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echo " <input name=\"hostname\" type=\"hidden\" value=\"".stripslashes(trim($hostname))."\">";
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echo " <input name=\"mdbpath\" type=\"hidden\" value=\"".stripslashes($mdbpath)."\">";
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echo " <input name=\"mdapath\" type=\"hidden\" value=\"".stripslashes($mdapath)."\">";
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}
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echo "</td><td> </td>";
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echo "</tr><tr><td> </td><td>";
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echo " <input type=submit name=save value=\"Import Questions\">";
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echo "</td></tr>";
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echo "</table>";
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echo "</form>";
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print_simple_box_end();
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print_footer($course);
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exit;
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}
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//
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// this is the main import section
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//
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notify("Importing questions");
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if (PHP_OS == "Linux") {
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$hostname = trim($hostname);
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$records = $this->getquestions($mdbpath,$question_category,$mdapath, $hostname);
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} else {
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$records = $this->getquestions($filename,$question_category);
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}
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foreach ($records as $qrec)
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{
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$question = NULL;
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$question->image = ""; // No images with this format
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if ($qrec[9] != "") {
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$question->image = $qrec[9];
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}
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$question->defaultgrade = 1;
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// 0 Selected
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// 1 PracticeTestOK?
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// 2 QuestionText
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// 3 QuestionType
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// 4 Option1Text
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// 5 Option2Text
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// 6 Option3Text
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// 7 Option4Text
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// 8 CorrectAnswer
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// 9 Graphic
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// 10 Module
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// 11 ChapterNumber
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// 12 PageNumber
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$ref = "Answer can be found in chapter ". $qrec[11] . ", page " . $qrec[12] . ".";
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switch ($qrec[3]) {
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case 1:
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$question->qtype = MULTICHOICE; // MULTICHOICE, SHORTANSWER, TRUEFALSE
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// echo "<pre>";echo htmlspecialchars($qrec[2]); echo "</pre>";
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$question->questiontext = addslashes(trim($qrec[2]));
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// echo "<pre>";echo $question->questiontext; echo "</pre>";
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$question->name = preg_replace("/<br>/", "", $question->questiontext);
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$question->single = 1; // Only one answer is allowed -- used for multiple choicers
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$fractionset = 0;
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for ($i=4;$i<=7;$i++) {
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if ($qrec[$i] != "") {
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$question->answer[$i-3]=addslashes($qrec[$i]);
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if ($qrec[8] == $i-3) { // if this is the index of CorrectAnswer
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$question->fraction[$i-3] = 1;
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$fractionset = 1;
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} else {
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$question->fraction[$i-3] = 0;
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}
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$question->feedback[$i-3] = (($qrec[8] == $i-3)?"Correct. ":"Incorrect. ") . $ref;
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}
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}
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if ($fractionset == 0) { $question->fraction[1] = 1; }
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break;
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case 2: // TRUE FALSE
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$question->qtype = TRUEFALSE;
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$question->questiontext = addslashes(trim($qrec[2]));
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$question->name = preg_replace("/<br>/", "", $question->questiontext);
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// for TF, $question->answer should be 1 for true, 0 for false
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if ($qrec[8] == "T") { $question->answer =1;} else { $question->answer = 0; }
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// for TF, use $question->feedbacktrue and feedbackfalse
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$question->feedbacktrue = (($qrec[8] =="T")?"Correct. ":"Incorrect. ") . $ref;
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$question->feedbackfalse = (($qrec[8] =="F")?"Correct. ":"Incorrect. ") . $ref;
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break;
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case 3:
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$question->qtype = SHORTANSWER;
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$question->questiontext = addslashes(trim($qrec[2]));
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// echo "<pre>";echo $question->questiontext; echo "</pre>";
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$question->name = preg_replace("/<br>/", "", $question->questiontext);
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$question->usecase=0; // Ignore case -- for SHORT ANSWER questions
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$answers = explode("~", $qrec[8]);
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$question->answer[0]=" ";
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$question->fraction[0]=1;
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for ($i=0;$i<count($answers);$i++) {
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$question->answer[$i] = addslashes(trim($answers[$i]));
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$question->feedback[$i] = $ref;
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$question->fraction[$i] = 1; // 1 for 100%, 0 for none or somewhere in between
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}
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break;
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case 4:
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$question = 0;
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notify("Cannot use essay questions - skipping question ". $qrec[2] . " " . $ref);
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break;
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default:
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$question = 0;
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notify("Misformatted Record. Question Skipped.");
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break;
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}
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if ($question) { $questions[] = $question; }
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}
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$count = 0;
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// process all the questions
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if (PHP_OS == "WINNT") {
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$filename = str_replace("\\\\","\\",$filename);
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$filename = str_replace("/","\\",$filename);
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}
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foreach ($questions as $question) { // Process and store each question
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$count++;
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echo "<hr><p><b>$count</b>. ".stripslashes($question->questiontext)."</p>";
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$question->category = $this->category->id;
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$question->stamp = make_unique_id_code(); // Set the unique code (not to be changed)
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$question->version = 1; // Original version of this question
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if (!$question->id = insert_record("quiz_questions", $question)) {
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error("Could not insert new question!");
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}
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$this->questionids[] = $question->id;
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// Now to save all the answers and type-specific options
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$result = quiz_save_question_options($question);
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if (!empty($result->error)) {
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notify($result->error);
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$this->deletedatabase($filename);
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return false;
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}
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if (!empty($result->notice)) {
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notify($result->notice);
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$this->deletedatabase($filename);
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return true;
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}
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}
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$this->deletedatabase($filename);
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return true;
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}
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function importpostprocess() {
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return true;
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}
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function deletedatabase($filename) {
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if (! $this->fulldelete($filename)) {
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echo "<BR>Error: Could not delete: $filename";
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return false;
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}
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return true;
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}
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function getquestions($filename, $category, $mdapath="", $hostname="") {
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if (($category == "allcategories") or ($category == "")) {
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$sql = "SELECT * FROM TBQuestions";
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} else {
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$sql = "SELECT * FROM TBQuestions where module = '".$category."'";
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}
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if (PHP_OS == "WINNT") {
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$ldb =& $this->connect_win($filename);
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$qset = $ldb->Execute("$sql");
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if ( $qset->RecordCount() > 0 ) {
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$records = $qset->GetAssoc(true);
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} else {
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$this->err("There were no records in the database.",$dsn);
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$ldb->Close();
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return false;
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}
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$ldb->Close();
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} else { // if PHP_OS == WINNT
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// we have a linux installation
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$result = $this->query_linux($sql,$filename, $mdapath,$hostname);
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if ( count($result) > 0 ) {
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// get rid of the ID field in the first column.
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for($i=0;$i<count($result);$i++) {
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foreach (array_keys($result[$i]) as $j) {
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$records[$i][$j-1] = $result[$i][$j];
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}
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}
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} else {
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$this->err("There were no records in the database.",$dsn);
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$ldb->Close();
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return false;
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}
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// xml test and connect
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} // PHP_OS TEST
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return $records;
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}
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function getquestioncategories($filename, $mdapath="", $hostname="") {
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global $CFG, $result;
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$sql = "SELECT Distinct module FROM TBQuestions";
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if (PHP_OS == "WINNT") {
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$ldb =& $this->connect_win($filename);
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$qset = $ldb->Execute("$sql");
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if ( $qset->RecordCount() > 0 ) {
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$records = $qset->GetArray(true);
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foreach ($records as $record) {
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$categories[$record[0]] = $record[0];
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}
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} else { // if recordcount
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$this->err("There were no records in the database.",$dsn);
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$ldb->Close();
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return false;
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}
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$ldb->Close();
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} else { // if PHP_OS == WINNT
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// we have a linux installation
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$result = $this->query_linux($sql, $filename, $mdapath, $hostname);
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for($i=0;$i<count($result);$i++) {
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$categories[$result[$i][0]] = $result[$i][0];
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}
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} // PHP_OS TEST
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return $categories;
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}
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function query_linux($sql, $mdbpath, $mdapath, $hostname) {
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global $result;
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include_once("odbcsocketserver.class.php");
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// set up socket server object to connect to remote host
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$oTest = new ODBCSocketServer;
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//Set the Hostname, port, and connection string
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$oTest->sHostName = $hostname;
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$oTest->nPort = 9628;
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// $oTest->sConnectionString="DRIVER=Microsoft Access Driver (*.mdb);SystemDB=C:\CTM\System.mda;DBQ=C:\CTM\of2K3\ctm.mdb;UID=Assess;PWD=VBMango;";
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$oTest->sConnectionString="DRIVER=Microsoft Access Driver (*.mdb);SystemDB=".
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$mdapath.";DBQ=".$mdbpath.";UID=Assess;PWD=VBMango;";
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// send and receive XML communication
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$qResult = $oTest->ExecSQL($sql);
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// set up XML parser to read the results
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$xml_parser = xml_parser_create("US-ASCII");
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xml_set_element_handler($xml_parser, "quiz_xmlstart", "quiz_xmlend");
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xml_set_character_data_handler($xml_parser, "quiz_xmldata");
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// parse the XML and get back the result set array
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if (!xml_parse($xml_parser, $qResult)) {
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$this->err("XML error: ".xml_error_string(xml_get_error_code($xml_parser))
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." at line ".xml_get_current_line_number($xml_parser),$oTest->sConnectionString);
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return false;
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} else {
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// echo("Successful XML parse. ");
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// prepare the array for use in the pull-down
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/* echo "<br>count of rows is ". count ($result);
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echo "<pre>\n";
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$qResult = HtmlSpecialChars($qResult);
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echo $qResult;
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echo "\n</pre>";
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*/
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xml_parser_free($xml_parser);
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// $sResult = HtmlSpecialChars($qResult);
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//echo("<pre>");
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// echo($sResult);
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// echo("</pre>");
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return $result;
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}
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}
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function connect_win($filename) {
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global $CFG, $systemdb;
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// first, verify the location of System.mda
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if (!isset($systemdb)) {
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$systemdb=$this->findfile("System.mda");
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}
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if (! $systemdb) {
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$this->err("The system database System.mda cannot be found. Check that you've uploaded it to the course.",$dsn);
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die;
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}
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$ldb = &ADONewConnection('access');
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$dsn="DRIVER=Microsoft Access Driver (*.mdb);SystemDB=".$systemdb.";DBQ=".$filename.";UID=Assess;PWD=VBMango;";
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$dbconnected = $ldb->Connect($dsn);
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if (! $dbconnected) {
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$this->err("Moodle could not connect to the database.",$dsn);
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die;
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}
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return $ldb;
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}
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function err($message, $dsn) {
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echo "<font color=\"#990000\">";
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echo "<p>Error: $message</p>";
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echo "<p>ODBC File DSN: $dsn<br />";
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echo "</font>";
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}
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function fulldelete($location) {
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if (is_dir($location)) {
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$currdir = opendir($location);
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while ($file = readdir($currdir)) {
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if ($file <> ".." && $file <> ".") {
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$fullfile = $location."/".$file;
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if (is_dir($fullfile)) {
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if (!fulldelete($fullfile)) {
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return false;
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}
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} else {
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if (!unlink($fullfile)) {
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return false;
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}
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}
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}
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}
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closedir($currdir);
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if (! rmdir($location)) {
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return false;
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}
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} else {
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if (!unlink($location)) {
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return false;
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}
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}
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return true;
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}
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function findfile($filename) {
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global $CFG;
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$dirs = $this->getcoursedirs();
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$dirs[] = $CFG->dirroot."\mod\quiz\format";
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foreach ($dirs as $dir) {
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$file = $dir . "\System.mda";
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// look for System.mda
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if (is_file($file)) return $file;
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}
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return false;
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}
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function getcoursedirs() {
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global $CFG;
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// for every course in the system, find the root of the data directory
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$courses = get_records_sql("select distinct id,fullname from ".$CFG->prefix."course");
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$dirs = array();
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if ($courses) {
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foreach ($courses as $course) {
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$dir = $CFG->dataroot . "/" . $course->id;
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if (is_dir($dir)) { $dirs[] = $dir; }
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}
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}
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return $dirs;
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}
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} // END OF CLASS
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//Handler for starting elements
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function quiz_xmlstart($parser, $name, $attribs) {
|
|
global $result,$row, $col, $incolumn;
|
|
$name = strtolower($name);
|
|
switch ($name) {
|
|
case "row":
|
|
$col=0;break;
|
|
case "column":
|
|
$incolumn = 1;break;
|
|
case "error":
|
|
break;
|
|
case "result":
|
|
$row = 0; break;
|
|
} // switch
|
|
}
|
|
|
|
//handler for the end of elements
|
|
function quiz_xmlend($parser, $name) {
|
|
global $result, $row, $col, $incolumn;
|
|
$name = strtolower($name);
|
|
switch ($name) {
|
|
case "row":
|
|
$row++;break;
|
|
case "column":
|
|
$incolumn = 0;
|
|
$col++;
|
|
break;
|
|
case "error":
|
|
break;
|
|
case "result":
|
|
break;
|
|
} // switch
|
|
} // function
|
|
|
|
//handler for character data
|
|
function quiz_xmldata($parser, $data) {
|
|
global $result, $row, $col, $incolumn;
|
|
if ($incolumn) { $result[$row][$col] = $result[$row][$col] . $data;
|
|
}
|
|
}
|
|
|
|
?>
|