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