1 files changed, 129 insertions, 0 deletions
diff --git a/platform/www/lib/plugins/tag/syntax/topic.php b/platform/www/lib/plugins/tag/syntax/topic.php
new file mode 100644
index 0000000..a065a94
--- /dev/null
+++ b/platform/www/lib/plugins/tag/syntax/topic.php
@@ -0,0 +1,129 @@
+<?php
+/**
+ * Tag Plugin, topic component: displays links to all wiki pages with a certain tag
+ * 
+ * @license  GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author   Esther Brunner <wikidesign@gmail.com>
+ */
+
+/**
+ * Topic syntax, displays links to all wiki pages with a certain tag
+ */
+class syntax_plugin_tag_topic extends DokuWiki_Syntax_Plugin {
+
+    /**
+     * @return string Syntax type
+     */
+    function getType() { return 'substition'; }
+
+    /**
+     * @return string Paragraph type
+     */
+    function getPType() { return 'block'; }
+
+    /**
+     * @return int Sort order
+     */
+    function getSort() { return 295; }
+
+    /**
+     * @param string $mode Parser mode
+     */
+    function connectTo($mode) {
+        $this->Lexer->addSpecialPattern('\{\{topic>.+?\}\}',$mode,'plugin_tag_topic');
+    }
+
+    /**
+     * Handle matches of the topic syntax
+     *
+     * @param string $match The match of the syntax
+     * @param int    $state The state of the handler
+     * @param int    $pos The position in the document
+     * @param Doku_Handler    $handler The handler
+     * @return array Data for the renderer
+     */
+    function handle($match, $state, $pos, Doku_Handler $handler) {
+        global $ID;
+
+        $match = substr($match, 8, -2); // strip {{topic> from start and }} from end
+        list($match, $flags) = explode('&', $match, 2);
+        $flags = explode('&', $flags);
+        list($ns, $tag) = explode('?', $match);
+
+        if (!$tag) {
+            $tag = $ns;
+            $ns   = '';
+        }
+
+        if (($ns == '*') || ($ns == ':')) $ns = '';
+        elseif ($ns == '.') $ns = getNS($ID);
+        else $ns = cleanID($ns);
+
+        return array($ns, trim($tag), $flags);
+    }
+
+    /**
+     * Render xhtml output or metadata
+     *
+     * @param string         $mode      Renderer mode (supported modes: xhtml and metadata)
+     * @param Doku_Renderer  $renderer  The renderer
+     * @param array          $data      The data from the handler function
+     * @return bool If rendering was successful.
+     */
+    function render($mode, Doku_Renderer $renderer, $data) {
+        list($ns, $tag, $flags) = $data;
+
+        /* @var helper_plugin_tag $my */
+        if ($my = $this->loadHelper('tag')) $pages = $my->getTopic($ns, '', $tag);
+        if (!isset($pages) || !$pages) return true; // nothing to display
+
+        if ($mode == 'xhtml') {
+            /* @var Doku_Renderer_xhtml $renderer */
+
+            // prevent caching to ensure content is always fresh
+            $renderer->nocache();
+
+            /* @var helper_plugin_pagelist $pagelist */
+            // let Pagelist Plugin do the work for us
+            if ((!$pagelist = $this->loadHelper('pagelist'))) {
+                return false;
+            }
+            $pagelist->sort = false;
+            $pagelist->rsort = false;
+
+            $configflags = explode(',', str_replace(" ", "", $this->getConf('pagelist_flags')));
+           	$flags = array_merge($configflags, $flags);	
+           	foreach($flags as $key => $flag) {
+           		if($flag == "")	unset($flags[$key]);
+           	}     
+
+            $pagelist->setFlags($flags);
+            $pagelist->startList();
+
+            // Sort pages by pagename if required by flags
+            if($pagelist->sort || $pagelist->rsort) {
+            	$keys = array();
+            	$fnc = create_function('$a, $b', 'return strcmp(noNS($a["id"]), noNS($b["id"])); ');
+            	usort($pages, $fnc);
+            	// rsort is true - revserse sort the pages
+            	if($pagelist->rsort) krsort($pages);
+            }
+
+            foreach ($pages as $page) {
+                $pagelist->addPage($page);
+            }
+            $renderer->doc .= $pagelist->finishList();      
+            return true;
+
+        // for metadata renderer
+/*        } elseif ($mode == 'metadata') {
+            foreach ($pages as $page) {
+                $renderer->meta['relation']['references'][$page['id']] = true;
+            }
+
+            return true;*/ // causes issues with backlinks
+        }
+        return false;
+    }
+}
+// vim:ts=4:sw=4:et: