/**
* Modifies XML files from a backup before doing the restore.
* @param string $path Path to backup root
* @param int $courseid Target course id
* @param array $sectionids ids for each section in subpage (given new number)
* @param int $spsectionid Section id for this subpage (set to 0)
* @param int $spid cm id for this subpage (used to hide it)
*/
private function update_backup($path, $courseid, $sectionids, $spsectionid, $spid = null)
{
// List all files in backup so we can search through it later.
$allfiles = self::list_files_recursive($path);
// Create array of original id and new number.
$sections = array($spsectionid => 0);
$minnumber = null;
foreach ($sectionids as $sectionid) {
$minnumber = \mod_subpage::add_course_section($courseid, $minnumber);
$sections[$sectionid] = $minnumber;
}
// Update section number (title element???) with empty value on target course.
foreach (self::get_matching_files($path, $allfiles, '(moodle_backup.xml)') as $file) {
$dom = new \DOMDocument();
$dom->load($file);
$xpath = new \DOMXpath($dom);
foreach ($xpath->query('/contents/sections/section/sectionid') as $node) {
if (in_array($node->nodeValue, $sectionids)) {
$titlenode = $node->parentNode->getElemetsByTagName('title')[0];
$titlenode->nodeValue = $sections[$node->nodeValue];
}
}
$dom->save($file);
}
// Update section number in each section xml.
foreach ($sections as $origid => $newnum) {
foreach (self::get_matching_files($path, $allfiles, "(.*/section_{$origid}/section\\.xml)") as $file) {
$dom = new \DOMDocument();
$dom->load($file);
$xpath = new \DOMXpath($dom);
foreach ($xpath->query('/section/number') as $node) {
$node->nodeValue = $newnum;
}
$dom->save($file);
}
}
// Hide subpage if id sent.
if ($spid) {
foreach (self::get_matching_files($path, $allfiles, "(.*/subpage_{$spid}/module\\.xml)") as $file) {
$dom = new \DOMDocument();
$dom->load($file);
$xpath = new \DOMXpath($dom);
foreach ($xpath->query('/module/visible') as $node) {
$node->nodeValue = 0;
}
$dom->save($file);
}
}
// Ensure we don't copy groups and groupings.
file_put_contents($path . '/groups.xml', '<groups></groups>');
// If there are no quizzes included then don't copy the question bank.
if (!self::get_matching_files($path, $allfiles, "activities/quiz_[0-9]+/module\\.xml")) {
file_put_contents($path . '/questions.xml', '<question_categories></question_categories>');
}
}
