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restorelib.php
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<?php //$Id$
//Functions used in restore
require_once($CFG->libdir.'/gradelib.php');
/**
* Group backup/restore constants, 0.
*/
define('RESTORE_GROUPS_NONE', 0);
/**
* Group backup/restore constants, 1.
*/
define('RESTORE_GROUPS_ONLY', 1);
/**
* Group backup/restore constants, 2.
*/
define('RESTORE_GROUPINGS_ONLY', 2);
/**
* Group backup/restore constants, course/all.
*/
define('RESTORE_GROUPS_GROUPINGS', 3);
//This function unzips a zip file in the same directory that it is
//It automatically uses pclzip or command line unzip
function restore_unzip ($file) {
return unzip_file($file, '', false);
}
//This function checks if moodle.xml seems to be a valid xml file
//(exists, has an xml header and a course main tag
function restore_check_moodle_file ($file) {
$status = true;
//Check if it exists
if ($status = is_file($file)) {
//Open it and read the first 200 bytes (chars)
$handle = fopen ($file, "r");
$first_chars = fread($handle,200);
$status = fclose ($handle);
//Chek if it has the requires strings
if ($status) {
$status = strpos($first_chars,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
if ($status !== false) {
$status = strpos($first_chars,"<MOODLE_BACKUP>");
}
}
}
return $status;
}
//This function iterates over all modules in backup file, searching for a
//MODNAME_refresh_events() to execute. Perhaps it should ve moved to central Moodle...
function restore_refresh_events($restore) {
global $CFG;
$status = true;
//Take all modules in backup
$modules = $restore->mods;
//Iterate
foreach($modules as $name => $module) {
//Only if the module is being restored
if (isset($module->restore) && $module->restore == 1) {
//Include module library
include_once("$CFG->dirroot/mod/$name/lib.php");
//If module_refresh_events exists
$function_name = $name."_refresh_events";
if (function_exists($function_name)) {
$status = $function_name($restore->course_id);
}
}
}
return $status;
}
//This function makes all the necessary calls to xxxx_decode_content_links_caller()
//function in each module, passing them the desired contents to be decoded
//from backup format to destination site/course in order to mantain inter-activities
//working in the backup/restore process
function restore_decode_content_links($restore) {
global $CFG, $DB;
$status = true;
if (!defined('RESTORE_SILENTLY')) {
echo "<ul>";
}
// Restore links in modules.
foreach ($restore->mods as $name => $info) {
//If the module is being restored
if (isset($info->restore) && $info->restore == 1) {
//Check if the xxxx_decode_content_links_caller exists
include_once("$CFG->dirroot/mod/$name/restorelib.php");
$function_name = $name."_decode_content_links_caller";
if (function_exists($function_name)) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>".get_string ("from")." ".get_string("modulenameplural",$name);
}
$status = $function_name($restore) && $status;
if (!defined('RESTORE_SILENTLY')) {
echo '</li>';
}
}
}
}
// Process all html text also in blocks too
if (!defined('RESTORE_SILENTLY')) {
echo '<li>'.get_string ('from').' '.get_string('blocks');
}
if ($blocks = $DB->get_records('block', array('visible'=>1))) {
foreach ($blocks as $block) {
if ($blockobject = block_instance($block->name)) {
$blockobject->decode_content_links_caller($restore);
}
}
}
if (!defined('RESTORE_SILENTLY')) {
echo '</li>';
}
// Restore links in questions.
require_once("$CFG->dirroot/question/restorelib.php");
if (!defined('RESTORE_SILENTLY')) {
echo '<li>' . get_string('from') . ' ' . get_string('questions', 'quiz');
}
$status = question_decode_content_links_caller($restore) && $status;
if (!defined('RESTORE_SILENTLY')) {
echo '</li>';
}
if (!defined('RESTORE_SILENTLY')) {
echo "</ul>";
}
return $status;
}
//This function is called from all xxxx_decode_content_links_caller(),
//its task is to ask all modules (maybe other linkable objects) to restore
//links to them.
function restore_decode_content_links_worker($content,$restore) {
global $DB;
foreach($restore->mods as $name => $info) {
$function_name = $name."_decode_content_links";
if (function_exists($function_name)) {
$content = $function_name($content,$restore);
}
}
// For each block, call its encode_content_links method
static $blockobjects = null;
if (!isset($blockobjects)) {
$blockobjects = array();
if ($blocks = $DB->get_records('block', array('visible'=>1))) {
foreach ($blocks as $block) {
if ($blockobject = block_instance($block->name)) {
$blockobjects[] = $blockobject;
}
}
}
}
foreach ($blockobjects as $blockobject) {
$content = $blockobject->decode_content_links($content,$restore);
}
return $content;
}
//This function converts all the wiki texts in the restored course
//to the Markdown format. Used only for backup files prior 2005041100.
//It calls every module xxxx_convert_wiki2markdown function
function restore_convert_wiki2markdown($restore) {
$status = true;
if (!defined('RESTORE_SILENTLY')) {
echo "<ul>";
}
foreach ($restore->mods as $name => $info) {
//If the module is being restored
if ($info->restore == 1) {
//Check if the xxxx_restore_wiki2markdown exists
$function_name = $name."_restore_wiki2markdown";
if (function_exists($function_name)) {
$status = $function_name($restore);
if (!defined('RESTORE_SILENTLY')) {
echo "<li>".get_string("modulenameplural",$name);
echo '</li>';
}
}
}
}
if (!defined('RESTORE_SILENTLY')) {
echo "</ul>";
}
return $status;
}
//This function receives a wiki text in the restore process and
//return it with every link to modules " modulename:moduleid"
//converted if possible. See the space before modulename!!
function restore_decode_wiki_content($content,$restore) {
global $CFG;
$result = $content;
$searchstring='/ ([a-zA-Z]+):([0-9]+)\(([^)]+)\)/';
//We look for it
preg_match_all($searchstring,$content,$foundset);
//If found, then we are going to look for its new id (in backup tables)
if ($foundset[0]) {
//print_object($foundset); //Debug
//Iterate over foundset[2]. They are the old_ids
foreach($foundset[2] as $old_id) {
//We get the needed variables here (course id)
$rec = backup_getid($restore->backup_unique_code,"course_modules",$old_id);
//Personalize the searchstring
$searchstring='/ ([a-zA-Z]+):'.$old_id.'\(([^)]+)\)/';
//If it is a link to this course, update the link to its new location
if($rec->new_id) {
//Now replace it
$result= preg_replace($searchstring,' $1:'.$rec->new_id.'($2)',$result);
} else {
//It's a foreign link so redirect it to its original URL
$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/$1/view.php?id='.$old_id.'($2)',$result);
}
}
}
return $result;
}
//This function read the xml file and store it data from the info zone in an object
function restore_read_xml_info ($xml_file) {
//We call the main read_xml function, with todo = INFO
$info = restore_read_xml ($xml_file,"INFO",false);
return $info;
}
//This function read the xml file and store it data from the course header zone in an object
function restore_read_xml_course_header ($xml_file) {
//We call the main read_xml function, with todo = COURSE_HEADER
$info = restore_read_xml ($xml_file,"COURSE_HEADER",false);
return $info;
}
//This function read the xml file and store its data from the blocks in a object
function restore_read_xml_blocks ($restore, $xml_file) {
//We call the main read_xml function, with todo = BLOCKS
$info = restore_read_xml ($xml_file,'BLOCKS',$restore);
return $info;
}
//This function read the xml file and store its data from the sections in a object
function restore_read_xml_sections ($xml_file) {
//We call the main read_xml function, with todo = SECTIONS
$info = restore_read_xml ($xml_file,"SECTIONS",false);
return $info;
}
//This function read the xml file and store its data from the course format in an object
function restore_read_xml_formatdata ($xml_file) {
//We call the main read_xml function, with todo = FORMATDATA
$info = restore_read_xml ($xml_file,'FORMATDATA',false);
return $info;
}
//This function read the xml file and store its data from the metacourse in a object
function restore_read_xml_metacourse ($xml_file) {
//We call the main read_xml function, with todo = METACOURSE
$info = restore_read_xml ($xml_file,"METACOURSE",false);
return $info;
}
//This function read the xml file and store its data from the gradebook in a object
function restore_read_xml_gradebook ($restore, $xml_file) {
//We call the main read_xml function, with todo = GRADEBOOK
$info = restore_read_xml ($xml_file,"GRADEBOOK",$restore);
return $info;
}
//This function read the xml file and store its data from the users in
//backup_ids->info db (and user's id in $info)
function restore_read_xml_users ($restore,$xml_file) {
//We call the main read_xml function, with todo = USERS
$info = restore_read_xml ($xml_file,"USERS",$restore);
return $info;
}
//This function read the xml file and store its data from the messages in
//backup_ids->message backup_ids->message_read and backup_ids->contact and db (and their counters in info)
function restore_read_xml_messages ($restore,$xml_file) {
//We call the main read_xml function, with todo = MESSAGES
$info = restore_read_xml ($xml_file,"MESSAGES",$restore);
return $info;
}
//This function read the xml file and store its data from the blogs in
//backup_ids->blog and backup_ids->blog_tag and db (and their counters in info)
function restore_read_xml_blogs ($restore,$xml_file) {
//We call the main read_xml function, with todo = BLOGS
$info = restore_read_xml ($xml_file,"BLOGS",$restore);
return $info;
}
//This function read the xml file and store its data from the questions in
//backup_ids->info db (and category's id in $info)
function restore_read_xml_questions ($restore,$xml_file) {
//We call the main read_xml function, with todo = QUESTIONS
$info = restore_read_xml ($xml_file,"QUESTIONS",$restore);
return $info;
}
//This function read the xml file and store its data from the scales in
//backup_ids->info db (and scale's id in $info)
function restore_read_xml_scales ($restore,$xml_file) {
//We call the main read_xml function, with todo = SCALES
$info = restore_read_xml ($xml_file,"SCALES",$restore);
return $info;
}
//This function read the xml file and store its data from the groups in
//backup_ids->info db (and group's id in $info)
function restore_read_xml_groups ($restore,$xml_file) {
//We call the main read_xml function, with todo = GROUPS
$info = restore_read_xml ($xml_file,"GROUPS",$restore);
return $info;
}
//This function read the xml file and store its data from the groupings in
//backup_ids->info db (and grouping's id in $info)
function restore_read_xml_groupings ($restore,$xml_file) {
//We call the main read_xml function, with todo = GROUPINGS
$info = restore_read_xml ($xml_file,"GROUPINGS",$restore);
return $info;
}
//This function read the xml file and store its data from the groupings in
//backup_ids->info db (and grouping's id in $info)
function restore_read_xml_groupings_groups ($restore,$xml_file) {
//We call the main read_xml function, with todo = GROUPINGS
$info = restore_read_xml ($xml_file,"GROUPINGSGROUPS",$restore);
return $info;
}
//This function read the xml file and store its data from the events (course) in
//backup_ids->info db (and event's id in $info)
function restore_read_xml_events ($restore,$xml_file) {
//We call the main read_xml function, with todo = EVENTS
$info = restore_read_xml ($xml_file,"EVENTS",$restore);
return $info;
}
//This function read the xml file and store its data from the modules in
//backup_ids->info
function restore_read_xml_modules ($restore,$xml_file) {
//We call the main read_xml function, with todo = MODULES
$info = restore_read_xml ($xml_file,"MODULES",$restore);
return $info;
}
//This function read the xml file and store its data from the logs in
//backup_ids->info
function restore_read_xml_logs ($restore,$xml_file) {
//We call the main read_xml function, with todo = LOGS
$info = restore_read_xml ($xml_file,"LOGS",$restore);
return $info;
}
function restore_read_xml_roles ($xml_file) {
//We call the main read_xml function, with todo = ROLES
$info = restore_read_xml ($xml_file,"ROLES",false);
return $info;
}
//This function prints the contents from the info parammeter passed
function restore_print_info ($info) {
global $CFG;
$status = true;
if ($info) {
$table = new object();
//This is tha align to every ingo table
$table->align = array ("right","left");
//This is the nowrap clause
$table->wrap = array ("","nowrap");
//The width
$table->width = "70%";
//Put interesting info in table
//The backup original name
$tab[0][0] = "<b>".get_string("backuporiginalname").":</b>";
$tab[0][1] = $info->backup_name;
//The moodle version
$tab[1][0] = "<b>".get_string("moodleversion").":</b>";
$tab[1][1] = $info->backup_moodle_release." (".$info->backup_moodle_version.")";
//The backup version
$tab[2][0] = "<b>".get_string("backupversion").":</b>";
$tab[2][1] = $info->backup_backup_release." (".$info->backup_backup_version.")";
//The backup date
$tab[3][0] = "<b>".get_string("backupdate").":</b>";
$tab[3][1] = userdate($info->backup_date);
//Print title
print_heading(get_string("backup").":");
$table->data = $tab;
//Print backup general info
print_table($table);
if ($info->backup_backup_version <= 2005070500) {
notify(get_string('backupnonisowarning')); // Message informing that this backup may not work!
}
//Now backup contents in another table
$tab = array();
//First mods info
$mods = $info->mods;
$elem = 0;
foreach ($mods as $key => $mod) {
$tab[$elem][0] = "<b>".get_string("modulenameplural",$key).":</b>";
if ($mod->backup == "false") {
$tab[$elem][1] = get_string("notincluded");
} else {
if ($mod->userinfo == "true") {
$tab[$elem][1] = get_string("included")." ".get_string("withuserdata");
} else {
$tab[$elem][1] = get_string("included")." ".get_string("withoutuserdata");
}
if (isset($mod->instances) && is_array($mod->instances) && count($mod->instances)) {
foreach ($mod->instances as $instance) {
if ($instance->backup) {
$elem++;
$tab[$elem][0] = $instance->name;
if ($instance->userinfo == 'true') {
$tab[$elem][1] = get_string("included")." ".get_string("withuserdata");
} else {
$tab[$elem][1] = get_string("included")." ".get_string("withoutuserdata");
}
}
}
}
}
$elem++;
}
//Metacourse info
$tab[$elem][0] = "<b>".get_string("metacourse").":</b>";
if ($info->backup_metacourse == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Users info
$tab[$elem][0] = "<b>".get_string("users").":</b>";
$tab[$elem][1] = get_string($info->backup_users);
$elem++;
//Logs info
$tab[$elem][0] = "<b>".get_string("logs").":</b>";
if ($info->backup_logs == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//User Files info
$tab[$elem][0] = "<b>".get_string("userfiles").":</b>";
if ($info->backup_user_files == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Course Files info
$tab[$elem][0] = "<b>".get_string("coursefiles").":</b>";
if ($info->backup_course_files == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//site Files info
$tab[$elem][0] = "<b>".get_string("sitefiles").":</b>";
if (isset($info->backup_site_files) && $info->backup_site_files == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//gradebook history info
$tab[$elem][0] = "<b>".get_string('gradebookhistories', 'grades').":</b>";
if (isset($info->gradebook_histories) && $info->gradebook_histories == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Messages info (only showed if present)
if ($info->backup_messages == 'true') {
$tab[$elem][0] = "<b>".get_string('messages','message').":</b>";
$tab[$elem][1] = get_string('yes');
$elem++;
} else {
//Do nothing
}
$elem++;
//Blogs info (only showed if present)
if (isset($info->backup_blogs) && $info->backup_blogs == 'true') {
$tab[$elem][0] = "<b>".get_string('blogs','blog').":</b>";
$tab[$elem][1] = get_string('yes');
$elem++;
} else {
//Do nothing
}
$table->data = $tab;
//Print title
print_heading(get_string("backupdetails").":");
//Print backup general info
print_table($table);
} else {
$status = false;
}
return $status;
}
//This function prints the contents from the course_header parammeter passed
function restore_print_course_header ($course_header) {
$status = true;
if ($course_header) {
$table = new object();
//This is tha align to every ingo table
$table->align = array ("right","left");
//The width
$table->width = "70%";
//Put interesting course header in table
//The course name
$tab[0][0] = "<b>".get_string("name").":</b>";
$tab[0][1] = $course_header->course_fullname." (".$course_header->course_shortname.")";
//The course summary
$tab[1][0] = "<b>".get_string("summary").":</b>";
$tab[1][1] = $course_header->course_summary;
$table->data = $tab;
//Print title
print_heading(get_string("course").":");
//Print backup course header info
print_table($table);
} else {
$status = false;
}
return $status;
}
//This function create a new course record.
//When finished, course_header contains the id of the new course
function restore_create_new_course($restore,&$course_header) {
global $CFG, $DB;
$status = true;
$fullname = $course_header->course_fullname;
$shortname = $course_header->course_shortname;
$currentfullname = "";
$currentshortname = "";
$counter = 0;
//Iteratere while the name exists
do {
if ($counter) {
$suffixfull = " ".get_string("copyasnoun")." ".$counter;
$suffixshort = "_".$counter;
} else {
$suffixfull = "";
$suffixshort = "";
}
$currentfullname = $fullname.$suffixfull;
// Limit the size of shortname - database column accepts <= 100 chars
$currentshortname = substr($shortname, 0, 100 - strlen($suffixshort)).$suffixshort;
$coursefull = $DB->get_record("course", array("fullname"=>$currentfullname));
$courseshort = $DB->get_record("course", array("shortname"=>$currentshortname));
$counter++;
} while ($coursefull || $courseshort);
//New name = currentname
$course_header->course_fullname = $currentfullname;
$course_header->course_shortname = $currentshortname;
// first try to get it from restore
if ($restore->restore_restorecatto) {
$category = $DB->get_record('course_categories', array('id'=>$restore->restore_restorecatto));
}
// else we try to get it from the xml file
//Now calculate the category
if (!$category) {
$category = $DB->get_record("course_categories",array("id"=>$course_header->category->id,
"name"=>$course_header->category->name));
}
//If no exists, try by name only
if (!$category) {
$category = $DB->get_record("course_categories", array("name"=>$course_header->category->name));
}
//If no exists, get category id 1
if (!$category) {
$category = $DB->get_record("course_categories", array("id"=>"1"));
}
//If category 1 doesn'exists, lets create the course category (get it from backup file)
if (!$category) {
$ins_category = new object();
$ins_category->name = $course_header->category->name;
$ins_category->parent = 0;
$ins_category->sortorder = 0;
$ins_category->coursecount = 0;
$ins_category->visible = 0; //To avoid interferences with the rest of the site
$ins_category->timemodified = time();
$newid = $DB->insert_record("course_categories",$ins_category);
$category->id = $newid;
$category->name = $course_header->category->name;
}
//If exists, put new category id
if ($category) {
$course_header->category->id = $category->id;
$course_header->category->name = $category->name;
//Error, cannot locate category
} else {
$course_header->category->id = 0;
$course_header->category->name = get_string("unknowncategory");
$status = false;
}
//Create the course_object
if ($status) {
$course = new object();
$course->category = $course_header->category->id;
$course->password = $course_header->course_password;
$course->fullname = $course_header->course_fullname;
$course->shortname = $course_header->course_shortname;
$course->idnumber = $course_header->course_idnumber;
$course->idnumber = ''; //$course_header->course_idnumber; // we don't want this at all.
$course->summary = backup_todb($course_header->course_summary);
$course->format = $course_header->course_format;
$course->showgrades = $course_header->course_showgrades;
$course->newsitems = $course_header->course_newsitems;
$course->teacher = $course_header->course_teacher;
$course->teachers = $course_header->course_teachers;
$course->student = $course_header->course_student;
$course->students = $course_header->course_students;
$course->guest = $course_header->course_guest;
$course->startdate = $course_header->course_startdate;
$course->startdate += $restore->course_startdateoffset;
$course->numsections = $course_header->course_numsections;
//$course->showrecent = $course_header->course_showrecent; INFO: This is out in 1.3
$course->maxbytes = $course_header->course_maxbytes;
$course->showreports = $course_header->course_showreports;
if (isset($course_header->course_groupmode)) {
$course->groupmode = $course_header->course_groupmode;
}
if (isset($course_header->course_groupmodeforce)) {
$course->groupmodeforce = $course_header->course_groupmodeforce;
}
if (isset($course_header->course_defaultgroupingid)) {
//keep the original now - convert after groupings restored
$course->defaultgroupingid = $course_header->course_defaultgroupingid;
}
$course->lang = $course_header->course_lang;
$course->theme = $course_header->course_theme;
$course->cost = $course_header->course_cost;
$course->currency = isset($course_header->course_currency)?$course_header->course_currency:'';
$course->marker = $course_header->course_marker;
$course->visible = $course_header->course_visible;
$course->hiddensections = $course_header->course_hiddensections;
$course->timecreated = $course_header->course_timecreated;
$course->timemodified = $course_header->course_timemodified;
$course->metacourse = $course_header->course_metacourse;
$course->expirynotify = isset($course_header->course_expirynotify) ? $course_header->course_expirynotify:0;
$course->notifystudents = isset($course_header->course_notifystudents) ? $course_header->course_notifystudents : 0;
$course->expirythreshold = isset($course_header->course_expirythreshold) ? $course_header->course_expirythreshold : 0;
$course->enrollable = isset($course_header->course_enrollable) ? $course_header->course_enrollable : 1;
$course->enrolstartdate = isset($course_header->course_enrolstartdate) ? $course_header->course_enrolstartdate : 0;
if ($course->enrolstartdate) { //Roll course dates
$course->enrolstartdate += $restore->course_startdateoffset;
}
$course->enrolenddate = isset($course_header->course_enrolenddate) ? $course_header->course_enrolenddate : 0;
if ($course->enrolenddate) { //Roll course dates
$course->enrolenddate += $restore->course_startdateoffset;
}
$course->enrolperiod = $course_header->course_enrolperiod;
//Calculate sortorder field
$sortmax = $DB->get_record_sql('SELECT MAX(sortorder) AS max
FROM {course}
WHERE category=?', array($course->category));
if (!empty($sortmax->max)) {
$course->sortorder = $sortmax->max + 1;
unset($sortmax);
} else {
$course->sortorder = 100;
}
//Now, recode some languages (Moodle 1.5)
if ($course->lang == 'ma_nt') {
$course->lang = 'mi_nt';
}
//Disable course->metacourse if avoided in restore config
if (!$restore->metacourse) {
$course->metacourse = 0;
}
//Check if the theme exists in destination server
$themes = get_list_of_themes();
if (!in_array($course->theme, $themes)) {
$course->theme = '';
}
//Now insert the record
$newid = $DB->insert_record("course",$course);
if ($newid) {
//save old and new course id
backup_putid ($restore->backup_unique_code,"course",$course_header->course_id,$newid);
//Replace old course_id in course_header
$course_header->course_id = $newid;
} else {
$status = false;
}
}
return $status;
}
//This function creates all the block stuff when restoring courses
//It calls selectively to restore_create_block_instances() for 1.5
//and above backups. Upwards compatible with old blocks.
function restore_create_blocks($restore, $backup_block_format, $blockinfo, $xml_file) {
global $CFG, $DB;
$status = true;
$DB->delete_records('block_instance', array('pageid'=>$restore->course_id, 'pagetype'=>PAGE_COURSE_VIEW));
if (empty($backup_block_format)) { // This is a backup from Moodle < 1.5
if (empty($blockinfo)) {
// Looks like it's from Moodle < 1.3. Let's give the course default blocks...
$newpage = page_create_object(PAGE_COURSE_VIEW, $restore->course_id);
blocks_repopulate_page($newpage);
} else if (!empty($CFG->showblocksonmodpages)) {
// We just have a blockinfo field, this is a legacy 1.4 or 1.3 backup
$blockrecords = $DB->get_records('block', null, '', 'name, id');
$temp_blocks_l = array();
$temp_blocks_r = array();
@list($temp_blocks_l, $temp_blocks_r) = explode(':', $blockinfo);
$temp_blocks = array(BLOCK_POS_LEFT => explode(',', $temp_blocks_l), BLOCK_POS_RIGHT => explode(',', $temp_blocks_r));
foreach($temp_blocks as $blockposition => $blocks) {
$blockweight = 0;
foreach($blocks as $blockname) {
if(!isset($blockrecords[$blockname])) {
// We don't know anything about this block!
continue;
}
$blockinstance = new stdClass;
// Remove any - prefix before doing the name-to-id mapping
if(substr($blockname, 0, 1) == '-') {
$blockname = substr($blockname, 1);
$blockinstance->visible = 0;
} else {
$blockinstance->visible = 1;
}
$blockinstance->blockid = $blockrecords[$blockname]->id;
$blockinstance->pageid = $restore->course_id;
$blockinstance->pagetype = PAGE_COURSE_VIEW;
$blockinstance->position = $blockposition;
$blockinstance->weight = $blockweight;
if(!$status = $DB->insert_record('block_instance', $blockinstance)) {
$status = false;
}
++$blockweight;
}
}
}
} else if($backup_block_format == 'instances') {
$status = restore_create_block_instances($restore,$xml_file);
}
return $status;
}
//This function creates all the block_instances from xml when restoring in a
//new course
function restore_create_block_instances($restore,$xml_file) {
global $CFG, $DB;
$status = true;
//Check it exists
if (!file_exists($xml_file)) {
$status = false;
}
//Get info from xml
if ($status) {
$info = restore_read_xml_blocks($restore,$xml_file);
}
if(empty($info->instances)) {
return $status;
}
// First of all, iterate over the blocks to see which distinct pages we have
// in our hands and arrange the blocks accordingly.
$pageinstances = array();
foreach($info->instances as $instance) {
//pagetype and pageid black magic, we have to handle the case of blocks for the
//course, blocks from other pages in that course etc etc etc.
if($instance->pagetype == PAGE_COURSE_VIEW) {
// This one's easy...
$instance->pageid = $restore->course_id;
} else if (!empty($CFG->showblocksonmodpages)) {
$parts = explode('-', $instance->pagetype);
if($parts[0] == 'mod') {
if(!$restore->mods[$parts[1]]->restore) {
continue;
}
$getid = backup_getid($restore->backup_unique_code, $parts[1], $instance->pageid);
if (empty($getid->new_id)) {
// Failed, perhaps the module was not included in the restore MDL-13554
continue;
}
$instance->pageid = $getid->new_id;
}
else {
// Not invented here ;-)
continue;
}
} else {
// do not restore activity blocks if disabled
continue;
}
if(!isset($pageinstances[$instance->pagetype])) {
$pageinstances[$instance->pagetype] = array();
}
if(!isset($pageinstances[$instance->pagetype][$instance->pageid])) {
$pageinstances[$instance->pagetype][$instance->pageid] = array();
}
$pageinstances[$instance->pagetype][$instance->pageid][] = $instance;
}
$blocks = $DB->get_records('block', array('visible'=>1), '', 'name, id, multiple');
// For each type of page we have restored
foreach($pageinstances as $thistypeinstances) {
// For each page id of that type
foreach($thistypeinstances as $thisidinstances) {
$addedblocks = array();
$maxweights = array();
// For each block instance in that page
foreach($thisidinstances as $instance) {
if(!isset($blocks[$instance->name])) {
//We are trying to restore a block we don't have...
continue;
}
//If we have already added this block once and multiples aren't allowed, disregard it
if(!$blocks[$instance->name]->multiple && isset($addedblocks[$instance->name])) {
continue;
}
//If its the first block we add to a new position, start weight counter equal to 0.
if(empty($maxweights[$instance->position])) {
$maxweights[$instance->position] = 0;
}
//If the instance weight is greater than the weight counter (we skipped some earlier
//blocks most probably), bring it back in line.
if($instance->weight > $maxweights[$instance->position]) {
$instance->weight = $maxweights[$instance->position];
}
//Add this instance
$instance->blockid = $blocks[$instance->name]->id;
// This will only be set if we come from 1.7 and above backups
// Also, must do this before insert ($DB->insert_record unsets id)
if (!empty($instance->id)) {
$oldid = $instance->id;
} else {
$oldid = 0;
}
if ($instance->id = $DB->insert_record('block_instance', $instance)) {
// Create block instance
if (!$blockobj = block_instance($instance->name, $instance)) {
$status = false;
break;
}
// Run the block restore if needed
if ($blockobj->backuprestore_instancedata_used()) {
// Get restore information
$data = backup_getid($restore->backup_unique_code,'block_instance',$oldid);
$data->new_id = $instance->id; // For completeness
if (!$blockobj->instance_restore($restore, $data)) {
$status = false;
break;
}
}
// Save oldid after block restore process because info will be over-written with blank string
if ($oldid) {
backup_putid ($restore->backup_unique_code,"block_instance",$oldid,$instance->id);
}
} else {
$status = false;
break;
}
//Get an object for the block and tell it it's been restored so it can update dates
//etc. if necessary
if ($blockobj = block_instance($instance->name,$instance)) {
$blockobj->after_restore($restore);
}
//Now we can increment the weight counter
++$maxweights[$instance->position];
//Keep track of block types we have already added
$addedblocks[$instance->name] = true;
}
}
}
return $status;
}
//This function creates all the course_sections and course_modules from xml
//when restoring in a new course or simply checks sections and create records
//in backup_ids when restoring in a existing course
function restore_create_sections(&$restore, $xml_file) {
global $CFG, $DB;