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<?php
/**
*
* @global moodle_database $DB
* @global moodle_page $PAGE
* @param int $courseid
* @param string $text
* @return string
*/
function glossary_filter($courseid, $text) {
global $CFG, $DB, $GLOSSARY_EXCLUDECONCEPTS, $PAGE;
// Trivial-cache - keyed on $cachedcourseid
static $nothingtodo;
static $conceptlist;
static $cachedcourseid;
static $jsinitialised;
if (empty($courseid)) {
$courseid = SITEID;
}
// Initialise/invalidate our trivial cache if dealing with a different course
if (!isset($cachedcourseid) || $cachedcourseid !== (int)$courseid) {
$conceptlist = array();
$nothingtodo = false;
}
$cachedcourseid = (int)$courseid;
if ($nothingtodo === true) {
return $text;
}
/// Create a list of all the concepts to search for. It may be cached already.
if (empty($conceptlist)) {
/// Find all the glossaries we need to examine
if (!$glossaries = $DB->get_records_sql_menu('SELECT g.id, g.name
FROM {glossary} g, {course_modules} cm, {modules} m
WHERE m.name = \'glossary\' AND
cm.module = m.id AND
cm.visible = 1 AND
g.id = cm.instance AND
g.usedynalink <> 0 AND
(g.course = ? OR g.globalglossary = 1)
ORDER BY g.globalglossary, g.id', array($courseid))) {
$nothingtodo = true;
return $text;
}
/// Make a list of glossary IDs for searching
$glossarylist = implode(',', array_keys($glossaries));
/// Pull out all the raw data from the database for entries, categories and aliases
$entries = $DB->get_records_select('glossary_entries',
'glossaryid IN ('.$glossarylist.') AND usedynalink != 0 AND approved != 0 ', null, '',
'id,glossaryid, concept, casesensitive, 0 AS category, fullmatch');
$categories = $DB->get_records_select('glossary_categories',
'glossaryid IN ('.$glossarylist.') AND usedynalink != 0', null, '',
'id,glossaryid,name AS concept, 1 AS casesensitive, 1 AS category, 1 AS fullmatch');
$aliases = $DB->get_records_sql('SELECT ga.id, ge.id AS entryid, ge.glossaryid, ga.alias AS concept, ge.concept AS originalconcept,
casesensitive, 0 AS category, fullmatch
FROM {glossary_alias} ga,
{glossary_entries} ge
WHERE ga.entryid = ge.id
AND ge.glossaryid IN ('.$glossarylist.')
AND ge.usedynalink != 0
AND ge.approved != 0', null);
/// Combine them into one big list
$concepts = array();
if ($entries and $categories) {
$concepts = array_merge($entries, $categories);
} else if ($categories) {
$concepts = $categories;
} else if ($entries) {
$concepts = $entries;
}
if ($aliases) {
$concepts = array_merge($concepts, $aliases);
}
if (!empty($concepts)) {
foreach ($concepts as $key => $concept) {
/// Trim empty or unlinkable concepts
$currentconcept = trim(strip_tags($concept->concept));
if (empty($currentconcept)) {
unset($concepts[$key]);
continue;
} else {
$concepts[$key]->concept = $currentconcept;
}
/// Rule out any small integers. See bug 1446
$currentint = intval($currentconcept);
if ($currentint && (strval($currentint) == $currentconcept) && $currentint < 1000) {
unset($concepts[$key]);
}
}
}
if (empty($concepts)) {
$nothingtodo = true;
return $text;
}
usort($concepts, 'glossary_sort_entries_by_length');
$strcategory = get_string('category', 'glossary');
/// Loop through all the concepts, setting up our data structure for the filter
$conceptlist = array(); /// We will store all the concepts here
foreach ($concepts as $concept) {
$glossaryname = str_replace(':', '-', $glossaries[$concept->glossaryid]);
if ($concept->category) { // Link to a category
$title = strip_tags($glossaryname.': '.$strcategory.' '.$concept->concept);
$href_tag_begin = '<a class="glossary autolink glossaryid'.$concept->glossaryid.'" title="'.$title.'" '.
'href="'.$CFG->wwwroot.'/mod/glossary/view.php?g='.$concept->glossaryid.
'&amp;mode=cat&amp;hook='.$concept->id.'">';
} else { // Link to entry or alias
if (!empty($concept->originalconcept)) { // We are dealing with an alias (so show and point to original)
$title = str_replace('"', "'", strip_tags($glossaryname.': '.$concept->originalconcept));
$concept->id = $concept->entryid;
} else { // This is an entry
$title = str_replace('"', "'", strip_tags($glossaryname.': '.$concept->concept));
}
// hardcoding dictionary format in the URL rather than defaulting
// to the current glossary format which may not work in a popup.
// for example "entry list" means the popup would only contain
// a link that opens another popup.
$link = new moodle_url('/mod/glossary/showentry.php', array('courseid'=>$courseid, 'eid'=>$concept->id, 'displayformat'=>'dictionary'));
$attributes = array(
'href' => $link,
'title'=> $title,
'class'=> 'glossary autolink glossaryid'.$concept->glossaryid);
// this flag is optionally set by resource_pluginfile()
// if processing an embedded file use target to prevent getting nested Moodles
if (isset($CFG->embeddedsoforcelinktarget) && $CFG->embeddedsoforcelinktarget) {
$attributes['target'] = '_top';
}
$href_tag_begin = html_writer::start_tag('a', $attributes);
}
$conceptlist[] = new filterobject($concept->concept, $href_tag_begin, '</a>',
$concept->casesensitive, $concept->fullmatch);
}
$conceptlist = filter_remove_duplicates($conceptlist);
if (empty($jsinitialised)) {
// Add a JavaScript event to open popup's here. This only ever need to be
// added once!
$PAGE->requires->yui_module('moodle-mod_glossary-autolinker', 'M.mod_glossary.init_filter_autolinking', array(array('courseid'=>$courseid)));
$jsinitialised = true;
}
}
if(!empty($GLOSSARY_EXCLUDECONCEPTS)) {
$reducedconceptlist=array();
foreach($conceptlist as $concept) {
if(!in_array($concept->phrase,$GLOSSARY_EXCLUDECONCEPTS)) {
$reducedconceptlist[]=$concept;
}
}
return filter_phrases($text, $reducedconceptlist);
}
return filter_phrases($text, $conceptlist); // Actually search for concepts!
}
function glossary_sort_entries_by_length ($entry0, $entry1) {
$len0 = strlen($entry0->concept);
$len1 = strlen($entry1->concept);
if ($len0 < $len1) {
return 1;
} else if ($len0 > $len1) {
return -1;
} else {
return 0;
}
}
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