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<?php
/**
* Tag Plugin: displays list of keywords with links to categories this page
* belongs to. The links are marked as tags for Technorati and other services
* using tagging.
*
* Usage: {{tag>category tags space separated}}
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Esther Brunner <wikidesign@gmail.com>
*/
/**
* Tag syntax plugin, allows to specify tags in a page
*/
class syntax_plugin_tag_tag extends DokuWiki_Syntax_Plugin {
/**
* @return string Syntax type
*/
function getType() { return 'substition'; }
/**
* @return int Sort order
*/
function getSort() { return 305; }
/**
* @return string Paragraph type
*/
function getPType() { return 'block';}
/**
* @param string $mode Parser mode
*/
function connectTo($mode) {
$this->Lexer->addSpecialPattern('\{\{tag>.*?\}\}', $mode, 'plugin_tag_tag');
}
/**
* Handle matches of the tag 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) {
$tags = trim(substr($match, 6, -2)); // strip markup & whitespace
$tags = preg_replace(array('/[[:blank:]]+/', '/\s+/'), " ", $tags); // replace linebreaks and multiple spaces with one space character
if (!$tags) return false;
// load the helper_plugin_tag
/** @var helper_plugin_tag $my */
if (!$my = $this->loadHelper('tag')) return false;
// split tags and returns for renderer
return $my->_parseTagList($tags);
}
/**
* 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, $data) {
if ($data === false) return false;
/** @var helper_plugin_tag $my */
if (!$my = $this->loadHelper('tag')) return false;
// XHTML output
if ($mode == 'xhtml') {
$tags = $my->tagLinks($data);
if (!$tags) return true;
$renderer->doc .= '<div class="'.$this->getConf('tags_list_css').'"><span>'.DOKU_LF.
DOKU_TAB.$tags.DOKU_LF.
'</span></div>'.DOKU_LF;
return true;
// for metadata renderer
} elseif ($mode == 'metadata') {
/** @var Doku_Renderer_metadata $renderer */
// erase tags on persistent metadata no more used
if (isset($renderer->persistent['subject'])) {
unset($renderer->persistent['subject']);
$renderer->meta['subject'] = array();
}
if (!isset($renderer->meta['subject'])) $renderer->meta['subject'] = array();
// each registered tags in metadata and index should be valid IDs
$data = array_map('cleanID', $data);
// merge with previous tags and make the values unique
$renderer->meta['subject'] = array_unique(array_merge($renderer->meta['subject'], $data));
if ($renderer->capture) $renderer->doc .= DOKU_LF.implode(' ', $data).DOKU_LF;
// add references if tag page exists
foreach ($data as $tag) {
resolve_pageid($my->namespace, $tag, $exists); // resolve shortcuts
$renderer->meta['relation']['references'][$tag] = $exists;
}
return true;
}
return false;
}
}
// vim:ts=4:sw=4:et:
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