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<?php // $Id$
function glossary_filter($courseid, $text) {
global $CFG;
if (empty($courseid)) {
$courseid = SITEID;
}
$GLOSSARY_CONCEPT_IS_ENTRY = 0;
$GLOSSARY_CONCEPT_IS_CATEGORY = 1;
switch ($CFG->dbtype) {
case 'postgres7':
$as = 'as';
break;
case 'mysql':
$as = '';
break;
}
$glossarieslist = get_records_sql ("SELECT g.*
FROM {$CFG->prefix}glossary g,
{$CFG->prefix}course_modules cm,
{$CFG->prefix}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 = '$courseid' OR g.globalglossary = 1)
ORDER BY g.globalglossary, g.id");
if ( $glossarieslist ) {
$glossaries = "";
foreach ( $glossarieslist as $glossary ) {
$glossaries .= "$glossary->id,";
}
$glossaries=substr($glossaries,0,-1);
/// sorting by the lenght of the concept in order to assure that large concepts
/// could be linked first, if they exist in the text to parse
switch ($CFG->dbtype) {
case "postgres7":
case "mysql":
$ebylenght = "CHAR_LENGTH(concept) desc,";
$cbylenght = "CHAR_LENGTH(name) desc,";
break;
default:
$ebylenght = "";
$cbylenght = "";
break;
}
$entries = get_records_select("glossary_entries", "glossaryid IN ($glossaries) AND usedynalink != 0 and approved != 0 and concept != ''","$ebylenght glossaryid","id,glossaryid, concept,casesensitive,$GLOSSARY_CONCEPT_IS_ENTRY $as category,fullmatch");
$categories = get_records_select("glossary_categories", "glossaryid IN ($glossaries) AND usedynalink != 0", "$cbylenght glossaryid","id,glossaryid, name $as concept, 1 $as casesensitive,$GLOSSARY_CONCEPT_IS_CATEGORY $as category, 1 $as fullmatch");
if ( $entries and $categories ) {
$concepts = array_merge($entries, $categories);
usort($concepts,'glossary_sort_entries_by_length');
} elseif ( $categories ) {
$concepts = $categories;
} elseif ( $entries ) {
$concepts = $entries;
}
if ( isset($concepts) ) {
$lastglossary = 0;
$lastcategory = 0;
$cm = '';
foreach ( $concepts as $concept ) {
if ( $concept->category ) {
if ( $lastcategory != $concept->id ) {
$category = get_record("glossary_categories","id",$concept->id);
$lastcategory = $concept->id;
if ( empty($cm->instance) || $cm->instance != $category->glossaryid ) {
$gcat = get_record("glossary","id",$category->glossaryid);
if ( !$cm = get_coursemodule_from_instance("glossary", $category->glossaryid, $gcat->course) ) {
$cm->id = 1;
}
}
}
$title = strip_tags("$glossary->name: " . get_string("category","glossary"). " $category->name");
$href_tag_begin = "<a class=\"autolink\" title=\"$title\" href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;mode=cat&amp;hook=$concept->id\">";
} else {
if ( $lastglossary != $concept->glossaryid ) {
$glossary = get_record("glossary","id",$concept->glossaryid);
$lastglossary = $glossary->id;
}
$encodedconcept = urlencode($concept->concept);
$title = str_replace('"', "'", strip_tags("$glossary->name: $concept->concept"));
$href_tag_begin = "<a target=\"entry\" class=\"autolink\" title=\"$title\" href=\"$CFG->wwwroot/mod/glossary/showentry.php?courseid=$courseid&amp;concept=$encodedconcept\" ".
"onclick=\"return openpopup('/mod/glossary/showentry.php?courseid=$courseid\&amp;concept=$encodedconcept', 'entry', 'menubar=0,location=0,scrollbars,resizable,width=600,height=450', 0);\">";
}
$currentconcept = $concept->concept;
if ( $currentconcept = trim(strip_tags($currentconcept)) ) {
//Avoid integers < 1000 to be linked. See bug 1446.
$intcurrent = intval($currentconcept);
if (!empty($intcurrent) && strval($intcurrent) == $currentconcept && $intcurrent < 1000) {
$currentconcept = '';
}
if ( !$concept->category ) {
if ( $aliases = get_records("glossary_alias","entryid",$concept->id, "alias") ) {
foreach ($aliases as $alias) {
$currentalias = trim(strip_tags($alias->alias));
//Avoid integers < 1000 to be linked. See bug 1446.
$intcurrent = intval($currentalias);
if (!(!empty($intcurrent) && strval($intcurrent) == $currentalias && $intcurrent < 1000)) {
if ( $currentalias != '' ) {
$currentconcept .= "|" . $currentalias;
}
}
}
}
}
if ($currentconcept) {
$text = glossary_link_concepts($text,$currentconcept,$href_tag_begin, "</a>",$concept->casesensitive,$concept->fullmatch);
}
}
}
}
}
return $text;
}
function glossary_link_concepts($text,$concept,$href_tag_begin,$href_tag_end = "</a>",$casesensitive,$fullmatch) {
$list_of_words_cp = strip_tags($concept);
$list_of_words_cp = trim($list_of_words_cp,'|');
$list_of_words_cp = trim($list_of_words_cp);
$list_of_words_cp = preg_quote($list_of_words_cp,'/');
//Take out scaped pipes
$list_of_words_cp = str_replace('\|','|',$list_of_words_cp);
if ($fullmatch) {
$invalidprefixs = "([a-zA-Z0-9])";
$invalidsufixs = "([a-zA-Z0-9])";
//Avoid seaching in the string if it's inside invalidprefixs and invalidsufixs
$words = array();
$regexp = '/'.$invalidprefixs.'('.$list_of_words_cp.')|('.$list_of_words_cp.')'.$invalidsufixs.'/is';
preg_match_all($regexp,$text,$list_of_words);
if ($list_of_words) {
foreach (array_unique($list_of_words[0]) as $key=>$value) {
$words['<*'.$key.'*>'] = $value;
}
if (!empty($words)) {
$text = str_replace($words,array_keys($words),$text);
}
}
}
//Now avoid searching inside the <nolink>tag
$excludes = array();
preg_match_all('/<nolink>(.+?)<\/nolink>/is',$text,$list_of_excludes);
foreach (array_unique($list_of_excludes[0]) as $key=>$value) {
$excludes['<+'.$key.'+>'] = $value;
}
if (!empty($excludes)) {
$text = str_replace($excludes,array_keys($excludes),$text);
}
//Now avoid searching inside the <span class="nolink">tag
// This style doesn't break in editor. See bug #2428
$nolinkspan = array();
preg_match_all('/<span class=\"nolink\">(.+?)<\/span>/is',$text,$list_of_span);
foreach (array_unique($list_of_span[0]) as $key=>$value) {
$nolinkspan['<%'.$key.'%>'] = $value;
}
if (!empty($nolinkspan)) {
$text = str_replace($nolinkspan,array_keys($nolinkspan),$text);
}
//Now avoid searching inside links
$links = array();
preg_match_all('/<a[\s](.+?)>(.+?)<\/A>/is',$text,$list_of_links);
foreach (array_unique($list_of_links[0]) as $key=>$value) {
$links['<@'.$key.'@>'] = $value;
}
if (!empty($links)) {
$text = str_replace($links,array_keys($links),$text);
}
//Now avoid searching inside every tag
$final = array();
preg_match_all('/<(.+?)>/is',$text,$list_of_tags);
foreach (array_unique($list_of_tags[0]) as $key=>$value) {
$final['<|'.$key.'|>'] = $value;
}
if (!empty($final)) {
$text = str_replace($final,array_keys($final),$text);
}
if ($casesensitive) {
$text = preg_replace('/('.$list_of_words_cp.')/s', $href_tag_begin.'$1'.$href_tag_end, $text);
} else {
$text = preg_replace('/('.$list_of_words_cp.')/is', $href_tag_begin.'$1'.$href_tag_end, $text);
}
//Now rebuild excluded areas
if (!empty($final)) {
$text = str_replace(array_keys($final),$final,$text);
}
if (!empty($links)) {
$text = str_replace(array_keys($links),$links,$text);
}
if (!empty( $nolinkspan)) {
$text = str_replace(array_keys($nolinkspan),$nolinkspan,$text);
}
if (!empty( $excludes)) {
$text = str_replace(array_keys($excludes),$excludes,$text);
}
if ($fullmatch and !empty($words)) {
$text = str_replace(array_keys($words),$words,$text);
}
return $text;
}
function glossary_sort_entries_by_length ( $entry0, $entry1 ) {
if ( strlen(trim($entry0->concept)) < strlen(trim($entry1->concept)) ) {
return 1;
} elseif ( strlen(trim($entry0->concept)) > strlen(trim($entry1->concept)) ) {
return -1;
} else {
return 0;
}
}
function glossary_addslashes ( $chars, $text ) {
if ( $chars ) {
for ($i = 0; $i < strlen($chars); $i++) {
$text = str_replace($chars[$i], "\\" . $chars[$i], $text);
}
}
return $text;
}
?>
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