class.assTextSubsetExport.php

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<?php
class assTextSubsetExport extends assQuestionExport
{
    public function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false): string
    {
        global $DIC;
        $ilias = $DIC['ilias'];

        $a_xml_writer = new ilXmlWriter();
        // set xml header
        $a_xml_writer->xmlHeader();
        $a_xml_writer->xmlStartTag("questestinterop");
        $attrs = [
            "ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(),
            "title" => $this->object->getTitle(),
            "maxattempts" => $this->object->getNrOfTries()
        ];
        $a_xml_writer->xmlStartTag("item", $attrs);
        // add question description
        $a_xml_writer->xmlElement("qticomment", null, $this->object->getComment());
        $a_xml_writer->xmlStartTag("itemmetadata");
        $a_xml_writer->xmlStartTag("qtimetadata");
        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "ILIAS_VERSION");
        $a_xml_writer->xmlElement("fieldentry", null, $ilias->getSetting("ilias_version"));
        $a_xml_writer->xmlEndTag("qtimetadatafield");
        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "QUESTIONTYPE");
        $a_xml_writer->xmlElement("fieldentry", null, $this->object->getQuestionType());
        $a_xml_writer->xmlEndTag("qtimetadatafield");
        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "AUTHOR");
        $a_xml_writer->xmlElement("fieldentry", null, $this->object->getAuthor());
        $a_xml_writer->xmlEndTag("qtimetadatafield");

        // additional content editing information
        $this->addAdditionalContentEditingModeInformation($a_xml_writer);
        $this->addGeneralMetadata($a_xml_writer);

        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "textrating");
        $a_xml_writer->xmlElement("fieldentry", null, $this->object->getTextRating());
        $a_xml_writer->xmlEndTag("qtimetadatafield");
        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "correctanswers");
        $a_xml_writer->xmlElement("fieldentry", null, $this->object->getCorrectAnswers());
        $a_xml_writer->xmlEndTag("qtimetadatafield");
        $a_xml_writer->xmlStartTag("qtimetadatafield");
        $a_xml_writer->xmlElement("fieldlabel", null, "points");
        $a_xml_writer->xmlElement("fieldentry", null, $this->object->getPoints());
        $a_xml_writer->xmlEndTag("qtimetadatafield");
        $a_xml_writer->xmlEndTag("qtimetadata");
        $a_xml_writer->xmlEndTag("itemmetadata");

        // PART I: qti presentation
        $attrs = [
            "label" => $this->object->getTitle()
        ];
        $a_xml_writer->xmlStartTag("presentation", $attrs);
        // add flow to presentation
        $a_xml_writer->xmlStartTag("flow");
        // add material with question text to presentation
        $this->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
        // add answers to presentation
        for ($counter = 1; $counter <= $this->object->getCorrectAnswers(); $counter++) {
            $attrs = [
                "ident" => "TEXTSUBSET_$counter",
                "rcardinality" => "Single"
            ];
            $a_xml_writer->xmlStartTag("response_str", $attrs);
            $a_xml_writer = $this->addSuggestedSolution($a_xml_writer);
            // shuffle output
            $attrs = [
                "fibtype" => "String",
                "columns" => $this->object->getMaxTextboxWidth()
            ];
            $a_xml_writer->xmlStartTag("render_fib", $attrs);
            $a_xml_writer->xmlEndTag("render_fib");
            $a_xml_writer->xmlEndTag("response_str");
        }

        $a_xml_writer->xmlEndTag("flow");
        $a_xml_writer->xmlEndTag("presentation");

        // PART II: qti resprocessing
        $a_xml_writer->xmlStartTag("resprocessing");
        $a_xml_writer->xmlStartTag("outcomes");
        $a_xml_writer->xmlStartTag("decvar");
        $a_xml_writer->xmlEndTag("decvar");
        $attribs = [
            "varname" => "matches",
            "defaultval" => "0"
        ];
        $a_xml_writer->xmlElement("decvar", $attribs, null);
        $a_xml_writer->xmlEndTag("outcomes");
        // add response conditions
        for ($counter = 1; $counter <= $this->object->getCorrectAnswers(); $counter++) {
            $scoregroups = &$this->object->joinAnswers();
            foreach ($scoregroups as $points => $scoreanswers) {
                $attrs = [
                    "continue" => "Yes"
                ];
                $a_xml_writer->xmlStartTag("respcondition", $attrs);
                // qti conditionvar
                $a_xml_writer->xmlStartTag("conditionvar");
                $attrs = [
                    "respident" => "TEXTSUBSET_$counter"
                ];
                $a_xml_writer->xmlElement("varsubset", $attrs, join(",", $scoreanswers));
                $a_xml_writer->xmlEndTag("conditionvar");
                // qti setvar
                $attrs = [
                    "varname" => "matches",
                    "action" => "Add"
                ];
                $a_xml_writer->xmlElement("setvar", $attrs, $points);
                // qti displayfeedback
                $attrs = [
                    "feedbacktype" => "Response",
                    "linkrefid" => "Matches_$counter"
                ];
                $a_xml_writer->xmlElement("displayfeedback", $attrs);
                $a_xml_writer->xmlEndTag("respcondition");
            }
        }

        $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
            $this->object->getId(),
            true
        );
        $feedback_onenotcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation(
            $this->object->getId(),
            false
        );
        if (strlen($feedback_allcorrect . $feedback_onenotcorrect)) {
            if (strlen($feedback_allcorrect)) {
                $attrs = [
                    "continue" => "Yes"
                ];
                $a_xml_writer->xmlStartTag("respcondition", $attrs);
                // qti conditionvar
                $a_xml_writer->xmlStartTag("conditionvar");
                $attrs = [
                    "respident" => "points"
                ];
                $a_xml_writer->xmlElement("varsubset", $attrs, $this->object->getMaximumPoints());
                $a_xml_writer->xmlEndTag("conditionvar");
                // qti displayfeedback
                $attrs = [
                    "feedbacktype" => "Response",
                    "linkrefid" => "response_allcorrect"
                ];
                $a_xml_writer->xmlElement("displayfeedback", $attrs);
                $a_xml_writer->xmlEndTag("respcondition");
            }

            if (strlen($feedback_onenotcorrect)) {
                $attrs = [
                    "continue" => "Yes"
                ];
                $a_xml_writer->xmlStartTag("respcondition", $attrs);
                // qti conditionvar
                $a_xml_writer->xmlStartTag("conditionvar");
                $a_xml_writer->xmlStartTag("not");

                $attrs = [
                    "respident" => "points"
                ];
                $a_xml_writer->xmlElement("varsubset", $attrs, $this->object->getMaximumPoints());

                $a_xml_writer->xmlEndTag("not");
                $a_xml_writer->xmlEndTag("conditionvar");
                // qti displayfeedback
                $attrs = [
                    "feedbacktype" => "Response",
                    "linkrefid" => "response_onenotcorrect"
                ];
                $a_xml_writer->xmlElement("displayfeedback", $attrs);
                $a_xml_writer->xmlEndTag("respcondition");
            }
        }

        $a_xml_writer->xmlEndTag("resprocessing");

        // PART III: qti itemfeedback
        for ($counter = 1; $counter <= $this->object->getCorrectAnswers(); $counter++) {
            $attrs = [
                "ident" => "Matches_$counter",
                "view" => "All"
            ];
            $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
            // qti flow_mat
            $a_xml_writer->xmlStartTag("flow_mat");
            $a_xml_writer->xmlStartTag("material");
            $a_xml_writer->xmlElement("mattext");
            $a_xml_writer->xmlEndTag("material");
            $a_xml_writer->xmlEndTag("flow_mat");
            $a_xml_writer->xmlEndTag("itemfeedback");
        }

        if (strlen($feedback_allcorrect)) {
            $attrs = [
                "ident" => "response_allcorrect",
                "view" => "All"
            ];
            $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
            // qti flow_mat
            $a_xml_writer->xmlStartTag("flow_mat");
            $this->addQTIMaterial($a_xml_writer, $feedback_allcorrect);
            $a_xml_writer->xmlEndTag("flow_mat");
            $a_xml_writer->xmlEndTag("itemfeedback");
        }
        if (strlen($feedback_onenotcorrect)) {
            $attrs = [
                "ident" => "response_onenotcorrect",
                "view" => "All"
            ];
            $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
            // qti flow_mat
            $a_xml_writer->xmlStartTag("flow_mat");
            $this->addQTIMaterial($a_xml_writer, $feedback_onenotcorrect);
            $a_xml_writer->xmlEndTag("flow_mat");
            $a_xml_writer->xmlEndTag("itemfeedback");
        }

        $a_xml_writer = $this->addSolutionHints($a_xml_writer);

        $a_xml_writer->xmlEndTag("item");
        $a_xml_writer->xmlEndTag("questestinterop");

        $xml = $a_xml_writer->xmlDumpMem(false);
        if (!$a_include_header) {
            $pos = strpos($xml, "?>");
            $xml = substr($xml, $pos + 2);
        }
        return $xml;
    }
}