mirror of
https://github.com/WhatCD/Gazelle.git
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101 lines
2.5 KiB
PHP
101 lines
2.5 KiB
PHP
<?
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class Wiki {
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/**
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* Normalize an alias
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* @param string $str
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* @return string
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*/
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public static function normalize_alias($str) {
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return trim(substr(preg_replace('/[^a-z0-9]/', '', strtolower(htmlentities($str))), 0, 50));
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}
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/**
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* Get all aliases in an associative array of Alias => ArticleID
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* @return array
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*/
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public static function get_aliases() {
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$Aliases = G::$Cache->get_value('wiki_aliases');
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if (!$Aliases) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("
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SELECT Alias, ArticleID
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FROM wiki_aliases");
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$Aliases = G::$DB->to_pair('Alias', 'ArticleID');
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G::$DB->set_query_id($QueryID);
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G::$Cache->cache_value('wiki_aliases', $Aliases, 3600 * 24 * 14); // 2 weeks
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}
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return $Aliases;
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}
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/**
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* Flush the alias cache. Call this whenever you touch the wiki_aliases table.
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*/
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public static function flush_aliases() {
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G::$Cache->delete_value('wiki_aliases');
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}
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/**
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* Get the ArticleID corresponding to an alias
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* @param string $Alias
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* @return int
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*/
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public static function alias_to_id($Alias) {
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$Aliases = self::get_aliases();
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$Alias = self::normalize_alias($Alias);
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if (!isset($Aliases[$Alias])) {
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return false;
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} else {
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return (int)$Aliases[$Alias];
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}
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}
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/**
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* Get an article; returns false on error if $Error = false
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* @param int $ArticleID
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* @param bool $Error
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* @return array|bool
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*/
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public static function get_article($ArticleID, $Error = true) {
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$Contents = G::$Cache->get_value('wiki_article_'.$ArticleID);
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if (!$Contents) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("
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SELECT
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w.Revision,
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w.Title,
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w.Body,
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w.MinClassRead,
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w.MinClassEdit,
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w.Date,
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w.Author,
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u.Username,
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GROUP_CONCAT(a.Alias),
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GROUP_CONCAT(a.UserID)
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FROM wiki_articles AS w
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LEFT JOIN wiki_aliases AS a ON w.ID=a.ArticleID
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LEFT JOIN users_main AS u ON u.ID=w.Author
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WHERE w.ID='$ArticleID'
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GROUP BY w.ID");
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if (!G::$DB->has_results()) {
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if ($Error) {
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error(404);
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} else {
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return false;
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}
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}
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$Contents = G::$DB->to_array();
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G::$DB->set_query_id($QueryID);
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G::$Cache->cache_value('wiki_article_'.$ArticleID, $Contents, 3600 * 24 * 14); // 2 weeks
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}
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return $Contents;
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}
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/**
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* Flush an article's cache. Call this whenever you edited a wiki article or its aliases.
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* @param int $ArticleID
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*/
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public static function flush_article($ArticleID) {
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G::$Cache->delete_value('wiki_article_'.$ArticleID);
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}
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}
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