installed dokuwiki, added to navbar, updated news

1 files changed, 1970 insertions, 0 deletions

diff --git a/wiki/inc/parser/xhtml.php b/wiki/inc/parser/xhtml.php
new file mode 100644
index 0000000..a3e7b45
--- /dev/null
+++ b/wiki/inc/parser/xhtml.php
@@ -0,0 +1,1970 @@
+<?php
+/**
+ * Renderer for XHTML output
+ *
+ * @author Harry Fuecks <hfuecks@gmail.com>
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+if(!defined('DOKU_INC')) die('meh.');
+
+if(!defined('DOKU_LF')) {
+    // Some whitespace to help View > Source
+    define ('DOKU_LF', "\n");
+}
+
+if(!defined('DOKU_TAB')) {
+    // Some whitespace to help View > Source
+    define ('DOKU_TAB', "\t");
+}
+
+/**
+ * The XHTML Renderer
+ *
+ * This is DokuWiki's main renderer used to display page content in the wiki
+ */
+class Doku_Renderer_xhtml extends Doku_Renderer {
+    /** @var array store the table of contents */
+    public $toc = array();
+
+    /** @var array A stack of section edit data */
+    protected $sectionedits = array();
+    var $date_at = '';    // link pages and media against this revision
+
+    /** @var int last section edit id, used by startSectionEdit */
+    protected $lastsecid = 0;
+
+    /** @var array the list of headers used to create unique link ids */
+    protected $headers = array();
+
+    /** @var array a list of footnotes, list starts at 1! */
+    protected $footnotes = array();
+
+    /** @var int current section level */
+    protected $lastlevel = 0;
+    /** @var array section node tracker */
+    protected $node = array(0, 0, 0, 0, 0);
+
+    /** @var string temporary $doc store */
+    protected $store = '';
+
+    /** @var array global counter, for table classes etc. */
+    protected $_counter = array(); //
+
+    /** @var int counts the code and file blocks, used to provide download links */
+    protected $_codeblock = 0;
+
+    /** @var array list of allowed URL schemes */
+    protected $schemes = null;
+
+    /**
+     * Register a new edit section range
+     *
+     * @param int    $start  The byte position for the edit start
+     * @param array  $data   Associative array with section data:
+     *                       Key 'name': the section name/title
+     *                       Key 'target': the target for the section edit,
+     *                                     e.g. 'section' or 'table'
+     *                       Key 'hid': header id
+     *                       Key 'codeblockOffset': actual code block index
+     *                       Key 'start': set in startSectionEdit(),
+     *                                    do not set yourself
+     *                       Key 'range': calculated from 'start' and
+     *                                    $key in finishSectionEdit(),
+     *                                    do not set yourself
+     * @return string  A marker class for the starting HTML element
+     *
+     * @author Adrian Lang <lang@cosmocode.de>
+     */
+    public function startSectionEdit($start, $data) {
+        if (!is_array($data)) {
+            msg(
+                sprintf(
+                    'startSectionEdit: $data "%s" is NOT an array! One of your plugins needs an update.',
+                    hsc((string) $data)
+                ), -1
+            );
+
+            // @deprecated 2018-04-14, backward compatibility
+            $args = func_get_args();
+            $data = array();
+            if(isset($args[1])) $data['target'] = $args[1];
+            if(isset($args[2])) $data['name'] = $args[2];
+            if(isset($args[3])) $data['hid'] = $args[3];
+        }
+        $data['secid'] = ++$this->lastsecid;
+        $data['start'] = $start;
+        $this->sectionedits[] = $data;
+        return 'sectionedit'.$data['secid'];
+    }
+
+    /**
+     * Finish an edit section range
+     *
+     * @param int  $end     The byte position for the edit end; null for the rest of the page
+     *
+     * @author Adrian Lang <lang@cosmocode.de>
+     */
+    public function finishSectionEdit($end = null, $hid = null) {
+        $data = array_pop($this->sectionedits);
+        if(!is_null($end) && $end <= $data['start']) {
+            return;
+        }
+        if(!is_null($hid)) {
+            $data['hid'] .= $hid;
+        }
+        $data['range'] = $data['start'].'-'.(is_null($end) ? '' : $end);
+        unset($data['start']);
+        $this->doc .= '<!-- EDIT'.hsc(json_encode ($data)).' -->';
+    }
+
+    /**
+     * Returns the format produced by this renderer.
+     *
+     * @return string always 'xhtml'
+     */
+    function getFormat() {
+        return 'xhtml';
+    }
+
+    /**
+     * Initialize the document
+     */
+    function document_start() {
+        //reset some internals
+        $this->toc     = array();
+        $this->headers = array();
+    }
+
+    /**
+     * Finalize the document
+     */
+    function document_end() {
+        // Finish open section edits.
+        while(count($this->sectionedits) > 0) {
+            if($this->sectionedits[count($this->sectionedits) - 1]['start'] <= 1) {
+                // If there is only one section, do not write a section edit
+                // marker.
+                array_pop($this->sectionedits);
+            } else {
+                $this->finishSectionEdit();
+            }
+        }
+
+        if(count($this->footnotes) > 0) {
+            $this->doc .= '<div class="footnotes">'.DOKU_LF;
+
+            foreach($this->footnotes as $id => $footnote) {
+                // check its not a placeholder that indicates actual footnote text is elsewhere
+                if(substr($footnote, 0, 5) != "@@FNT") {
+
+                    // open the footnote and set the anchor and backlink
+                    $this->doc .= '<div class="fn">';
+                    $this->doc .= '<sup><a href="#fnt__'.$id.'" id="fn__'.$id.'" class="fn_bot">';
+                    $this->doc .= $id.')</a></sup> '.DOKU_LF;
+
+                    // get any other footnotes that use the same markup
+                    $alt = array_keys($this->footnotes, "@@FNT$id");
+
+                    if(count($alt)) {
+                        foreach($alt as $ref) {
+                            // set anchor and backlink for the other footnotes
+                            $this->doc .= ', <sup><a href="#fnt__'.($ref).'" id="fn__'.($ref).'" class="fn_bot">';
+                            $this->doc .= ($ref).')</a></sup> '.DOKU_LF;
+                        }
+                    }
+
+                    // add footnote markup and close this footnote
+                    $this->doc .= '<div class="content">'.$footnote.'</div>';
+                    $this->doc .= '</div>'.DOKU_LF;
+                }
+            }
+            $this->doc .= '</div>'.DOKU_LF;
+        }
+
+        // Prepare the TOC
+        global $conf;
+        if($this->info['toc'] && is_array($this->toc) && $conf['tocminheads'] && count($this->toc) >= $conf['tocminheads']) {
+            global $TOC;
+            $TOC = $this->toc;
+        }
+
+        // make sure there are no empty paragraphs
+        $this->doc = preg_replace('#<p>\s*</p>#', '', $this->doc);
+    }
+
+    /**
+     * Add an item to the TOC
+     *
+     * @param string $id       the hash link
+     * @param string $text     the text to display
+     * @param int    $level    the nesting level
+     */
+    function toc_additem($id, $text, $level) {
+        global $conf;
+
+        //handle TOC
+        if($level >= $conf['toptoclevel'] && $level <= $conf['maxtoclevel']) {
+            $this->toc[] = html_mktocitem($id, $text, $level - $conf['toptoclevel'] + 1);
+        }
+    }
+
+    /**
+     * Render a heading
+     *
+     * @param string $text  the text to display
+     * @param int    $level header level
+     * @param int    $pos   byte position in the original source
+     */
+    function header($text, $level, $pos) {
+        global $conf;
+
+        if(blank($text)) return; //skip empty headlines
+
+        $hid = $this->_headerToLink($text, true);
+
+        //only add items within configured levels
+        $this->toc_additem($hid, $text, $level);
+
+        // adjust $node to reflect hierarchy of levels
+        $this->node[$level - 1]++;
+        if($level < $this->lastlevel) {
+            for($i = 0; $i < $this->lastlevel - $level; $i++) {
+                $this->node[$this->lastlevel - $i - 1] = 0;
+            }
+        }
+        $this->lastlevel = $level;
+
+        if($level <= $conf['maxseclevel'] &&
+            count($this->sectionedits) > 0 &&
+            $this->sectionedits[count($this->sectionedits) - 1]['target'] === 'section'
+        ) {
+            $this->finishSectionEdit($pos - 1);
+        }
+
+        // write the header
+        $this->doc .= DOKU_LF.'<h'.$level;
+        if($level <= $conf['maxseclevel']) {
+            $data = array();
+            $data['target'] = 'section';
+            $data['name'] = $text;
+            $data['hid'] = $hid;
+            $data['codeblockOffset'] = $this->_codeblock;
+            $this->doc .= ' class="'.$this->startSectionEdit($pos, $data).'"';
+        }
+        $this->doc .= ' id="'.$hid.'">';
+        $this->doc .= $this->_xmlEntities($text);
+        $this->doc .= "</h$level>".DOKU_LF;
+    }
+
+    /**
+     * Open a new section
+     *
+     * @param int $level section level (as determined by the previous header)
+     */
+    function section_open($level) {
+        $this->doc .= '<div class="level'.$level.'">'.DOKU_LF;
+    }
+
+    /**
+     * Close the current section
+     */
+    function section_close() {
+        $this->doc .= DOKU_LF.'</div>'.DOKU_LF;
+    }
+
+    /**
+     * Render plain text data
+     *
+     * @param $text
+     */
+    function cdata($text) {
+        $this->doc .= $this->_xmlEntities($text);
+    }
+
+    /**
+     * Open a paragraph
+     */
+    function p_open() {
+        $this->doc .= DOKU_LF.'<p>'.DOKU_LF;
+    }
+
+    /**
+     * Close a paragraph
+     */
+    function p_close() {
+        $this->doc .= DOKU_LF.'</p>'.DOKU_LF;
+    }
+
+    /**
+     * Create a line break
+     */
+    function linebreak() {
+        $this->doc .= '<br/>'.DOKU_LF;
+    }
+
+    /**
+     * Create a horizontal line
+     */
+    function hr() {
+        $this->doc .= '<hr />'.DOKU_LF;
+    }
+
+    /**
+     * Start strong (bold) formatting
+     */
+    function strong_open() {
+        $this->doc .= '<strong>';
+    }
+
+    /**
+     * Stop strong (bold) formatting
+     */
+    function strong_close() {
+        $this->doc .= '</strong>';
+    }
+
+    /**
+     * Start emphasis (italics) formatting
+     */
+    function emphasis_open() {
+        $this->doc .= '<em>';
+    }
+
+    /**
+     * Stop emphasis (italics) formatting
+     */
+    function emphasis_close() {
+        $this->doc .= '</em>';
+    }
+
+    /**
+     * Start underline formatting
+     */
+    function underline_open() {
+        $this->doc .= '<em class="u">';
+    }
+
+    /**
+     * Stop underline formatting
+     */
+    function underline_close() {
+        $this->doc .= '</em>';
+    }
+
+    /**
+     * Start monospace formatting
+     */
+    function monospace_open() {
+        $this->doc .= '<code>';
+    }
+
+    /**
+     * Stop monospace formatting
+     */
+    function monospace_close() {
+        $this->doc .= '</code>';
+    }
+
+    /**
+     * Start a subscript
+     */
+    function subscript_open() {
+        $this->doc .= '<sub>';
+    }
+
+    /**
+     * Stop a subscript
+     */
+    function subscript_close() {
+        $this->doc .= '</sub>';
+    }
+
+    /**
+     * Start a superscript
+     */
+    function superscript_open() {
+        $this->doc .= '<sup>';
+    }
+
+    /**
+     * Stop a superscript
+     */
+    function superscript_close() {
+        $this->doc .= '</sup>';
+    }
+
+    /**
+     * Start deleted (strike-through) formatting
+     */
+    function deleted_open() {
+        $this->doc .= '<del>';
+    }
+
+    /**
+     * Stop deleted (strike-through) formatting
+     */
+    function deleted_close() {
+        $this->doc .= '</del>';
+    }
+
+    /**
+     * Callback for footnote start syntax
+     *
+     * All following content will go to the footnote instead of
+     * the document. To achieve this the previous rendered content
+     * is moved to $store and $doc is cleared
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function footnote_open() {
+
+        // move current content to store and record footnote
+        $this->store = $this->doc;
+        $this->doc   = '';
+    }
+
+    /**
+     * Callback for footnote end syntax
+     *
+     * All rendered content is moved to the $footnotes array and the old
+     * content is restored from $store again
+     *
+     * @author Andreas Gohr
+     */
+    function footnote_close() {
+        /** @var $fnid int takes track of seen footnotes, assures they are unique even across multiple docs FS#2841 */
+        static $fnid = 0;
+        // assign new footnote id (we start at 1)
+        $fnid++;
+
+        // recover footnote into the stack and restore old content
+        $footnote    = $this->doc;
+        $this->doc   = $this->store;
+        $this->store = '';
+
+        // check to see if this footnote has been seen before
+        $i = array_search($footnote, $this->footnotes);
+
+        if($i === false) {
+            // its a new footnote, add it to the $footnotes array
+            $this->footnotes[$fnid] = $footnote;
+        } else {
+            // seen this one before, save a placeholder
+            $this->footnotes[$fnid] = "@@FNT".($i);
+        }
+
+        // output the footnote reference and link
+        $this->doc .= '<sup><a href="#fn__'.$fnid.'" id="fnt__'.$fnid.'" class="fn_top">'.$fnid.')</a></sup>';
+    }
+
+    /**
+     * Open an unordered list
+     *
+     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function listu_open($classes = null) {
+        $class = '';
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class = " class=\"$classes\"";
+        }
+        $this->doc .= "<ul$class>".DOKU_LF;
+    }
+
+    /**
+     * Close an unordered list
+     */
+    function listu_close() {
+        $this->doc .= '</ul>'.DOKU_LF;
+    }
+
+    /**
+     * Open an ordered list
+     *
+     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function listo_open($classes = null) {
+        $class = '';
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class = " class=\"$classes\"";
+        }
+        $this->doc .= "<ol$class>".DOKU_LF;
+    }
+
+    /**
+     * Close an ordered list
+     */
+    function listo_close() {
+        $this->doc .= '</ol>'.DOKU_LF;
+    }
+
+    /**
+     * Open a list item
+     *
+     * @param int $level the nesting level
+     * @param bool $node true when a node; false when a leaf
+     */
+    function listitem_open($level, $node=false) {
+        $branching = $node ? ' node' : '';
+        $this->doc .= '<li class="level'.$level.$branching.'">';
+    }
+
+    /**
+     * Close a list item
+     */
+    function listitem_close() {
+        $this->doc .= '</li>'.DOKU_LF;
+    }
+
+    /**
+     * Start the content of a list item
+     */
+    function listcontent_open() {
+        $this->doc .= '<div class="li">';
+    }
+
+    /**
+     * Stop the content of a list item
+     */
+    function listcontent_close() {
+        $this->doc .= '</div>'.DOKU_LF;
+    }
+
+    /**
+     * Output unformatted $text
+     *
+     * Defaults to $this->cdata()
+     *
+     * @param string $text
+     */
+    function unformatted($text) {
+        $this->doc .= $this->_xmlEntities($text);
+    }
+
+    /**
+     * Execute PHP code if allowed
+     *
+     * @param  string $text      PHP code that is either executed or printed
+     * @param  string $wrapper   html element to wrap result if $conf['phpok'] is okff
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function php($text, $wrapper = 'code') {
+        global $conf;
+
+        if($conf['phpok']) {
+            ob_start();
+            eval($text);
+            $this->doc .= ob_get_contents();
+            ob_end_clean();
+        } else {
+            $this->doc .= p_xhtml_cached_geshi($text, 'php', $wrapper);
+        }
+    }
+
+    /**
+     * Output block level PHP code
+     *
+     * If $conf['phpok'] is true this should evaluate the given code and append the result
+     * to $doc
+     *
+     * @param string $text The PHP code
+     */
+    function phpblock($text) {
+        $this->php($text, 'pre');
+    }
+
+    /**
+     * Insert HTML if allowed
+     *
+     * @param  string $text      html text
+     * @param  string $wrapper   html element to wrap result if $conf['htmlok'] is okff
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function html($text, $wrapper = 'code') {
+        global $conf;
+
+        if($conf['htmlok']) {
+            $this->doc .= $text;
+        } else {
+            $this->doc .= p_xhtml_cached_geshi($text, 'html4strict', $wrapper);
+        }
+    }
+
+    /**
+     * Output raw block-level HTML
+     *
+     * If $conf['htmlok'] is true this should add the code as is to $doc
+     *
+     * @param string $text The HTML
+     */
+    function htmlblock($text) {
+        $this->html($text, 'pre');
+    }
+
+    /**
+     * Start a block quote
+     */
+    function quote_open() {
+        $this->doc .= '<blockquote><div class="no">'.DOKU_LF;
+    }
+
+    /**
+     * Stop a block quote
+     */
+    function quote_close() {
+        $this->doc .= '</div></blockquote>'.DOKU_LF;
+    }
+
+    /**
+     * Output preformatted text
+     *
+     * @param string $text
+     */
+    function preformatted($text) {
+        $this->doc .= '<pre class="code">'.trim($this->_xmlEntities($text), "\n\r").'</pre>'.DOKU_LF;
+    }
+
+    /**
+     * Display text as file content, optionally syntax highlighted
+     *
+     * @param string $text     text to show
+     * @param string $language programming language to use for syntax highlighting
+     * @param string $filename file path label
+     * @param array  $options  assoziative array with additional geshi options
+     */
+    function file($text, $language = null, $filename = null, $options=null) {
+        $this->_highlight('file', $text, $language, $filename, $options);
+    }
+
+    /**
+     * Display text as code content, optionally syntax highlighted
+     *
+     * @param string $text     text to show
+     * @param string $language programming language to use for syntax highlighting
+     * @param string $filename file path label
+     * @param array  $options  assoziative array with additional geshi options
+     */
+    function code($text, $language = null, $filename = null, $options=null) {
+        $this->_highlight('code', $text, $language, $filename, $options);
+    }
+
+    /**
+     * Use GeSHi to highlight language syntax in code and file blocks
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     * @param string $type     code|file
+     * @param string $text     text to show
+     * @param string $language programming language to use for syntax highlighting
+     * @param string $filename file path label
+     * @param array  $options  assoziative array with additional geshi options
+     */
+    function _highlight($type, $text, $language = null, $filename = null, $options = null) {
+        global $ID;
+        global $lang;
+        global $INPUT;
+
+        $language = preg_replace(PREG_PATTERN_VALID_LANGUAGE, '', $language);
+
+        $language = preg_replace(PREG_PATTERN_VALID_LANGUAGE, '', $language);
+
+        if($filename) {
+            // add icon
+            list($ext) = mimetype($filename, false);
+            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
+            $class = 'mediafile mf_'.$class;
+
+            $offset = 0;
+            if ($INPUT->has('codeblockOffset')) {
+                $offset = $INPUT->str('codeblockOffset');
+            }
+            $this->doc .= '<dl class="'.$type.'">'.DOKU_LF;
+            $this->doc .= '<dt><a href="'.exportlink($ID, 'code', array('codeblock' => $offset+$this->_codeblock)).'" title="'.$lang['download'].'" class="'.$class.'">';
+            $this->doc .= hsc($filename);
+            $this->doc .= '</a></dt>'.DOKU_LF.'<dd>';
+        }
+
+        if($text{0} == "\n") {
+            $text = substr($text, 1);
+        }
+        if(substr($text, -1) == "\n") {
+            $text = substr($text, 0, -1);
+        }
+
+        if(empty($language)) { // empty is faster than is_null and can prevent '' string
+            $this->doc .= '<pre class="'.$type.'">'.$this->_xmlEntities($text).'</pre>'.DOKU_LF;
+        } else {
+            $class = 'code'; //we always need the code class to make the syntax highlighting apply
+            if($type != 'code') $class .= ' '.$type;
+
+            $this->doc .= "<pre class=\"$class $language\">".p_xhtml_cached_geshi($text, $language, '', $options).'</pre>'.DOKU_LF;
+        }
+
+        if($filename) {
+            $this->doc .= '</dd></dl>'.DOKU_LF;
+        }
+
+        $this->_codeblock++;
+    }
+
+    /**
+     * Format an acronym
+     *
+     * Uses $this->acronyms
+     *
+     * @param string $acronym
+     */
+    function acronym($acronym) {
+
+        if(array_key_exists($acronym, $this->acronyms)) {
+
+            $title = $this->_xmlEntities($this->acronyms[$acronym]);
+
+            $this->doc .= '<abbr title="'.$title
+                .'">'.$this->_xmlEntities($acronym).'</abbr>';
+
+        } else {
+            $this->doc .= $this->_xmlEntities($acronym);
+        }
+    }
+
+    /**
+     * Format a smiley
+     *
+     * Uses $this->smiley
+     *
+     * @param string $smiley
+     */
+    function smiley($smiley) {
+        if(array_key_exists($smiley, $this->smileys)) {
+            $this->doc .= '<img src="'.DOKU_BASE.'lib/images/smileys/'.$this->smileys[$smiley].
+                '" class="icon" alt="'.
+                $this->_xmlEntities($smiley).'" />';
+        } else {
+            $this->doc .= $this->_xmlEntities($smiley);
+        }
+    }
+
+    /**
+     * Format an entity
+     *
+     * Entities are basically small text replacements
+     *
+     * Uses $this->entities
+     *
+     * @param string $entity
+     */
+    function entity($entity) {
+        if(array_key_exists($entity, $this->entities)) {
+            $this->doc .= $this->entities[$entity];
+        } else {
+            $this->doc .= $this->_xmlEntities($entity);
+        }
+    }
+
+    /**
+     * Typographically format a multiply sign
+     *
+     * Example: ($x=640, $y=480) should result in "640×480"
+     *
+     * @param string|int $x first value
+     * @param string|int $y second value
+     */
+    function multiplyentity($x, $y) {
+        $this->doc .= "$x&times;$y";
+    }
+
+    /**
+     * Render an opening single quote char (language specific)
+     */
+    function singlequoteopening() {
+        global $lang;
+        $this->doc .= $lang['singlequoteopening'];
+    }
+
+    /**
+     * Render a closing single quote char (language specific)
+     */
+    function singlequoteclosing() {
+        global $lang;
+        $this->doc .= $lang['singlequoteclosing'];
+    }
+
+    /**
+     * Render an apostrophe char (language specific)
+     */
+    function apostrophe() {
+        global $lang;
+        $this->doc .= $lang['apostrophe'];
+    }
+
+    /**
+     * Render an opening double quote char (language specific)
+     */
+    function doublequoteopening() {
+        global $lang;
+        $this->doc .= $lang['doublequoteopening'];
+    }
+
+    /**
+     * Render an closinging double quote char (language specific)
+     */
+    function doublequoteclosing() {
+        global $lang;
+        $this->doc .= $lang['doublequoteclosing'];
+    }
+
+    /**
+     * Render a CamelCase link
+     *
+     * @param string $link       The link name
+     * @param bool   $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     *
+     * @see http://en.wikipedia.org/wiki/CamelCase
+     */
+    function camelcaselink($link, $returnonly = false) {
+        if($returnonly) {
+          return $this->internallink($link, $link, null, true);
+        } else {
+          $this->internallink($link, $link);
+        }
+    }
+
+    /**
+     * Render a page local link
+     *
+     * @param string $hash       hash link identifier
+     * @param string $name       name for the link
+     * @param bool   $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function locallink($hash, $name = null, $returnonly = false) {
+        global $ID;
+        $name  = $this->_getLinkTitle($name, $hash, $isImage);
+        $hash  = $this->_headerToLink($hash);
+        $title = $ID.' ↵';
+
+        $doc = '<a href="#'.$hash.'" title="'.$title.'" class="wikilink1">';
+        $doc .= $name;
+        $doc .= '</a>';
+
+        if($returnonly) {
+          return $doc;
+        } else {
+          $this->doc .= $doc;
+        }
+    }
+
+    /**
+     * Render an internal Wiki Link
+     *
+     * $search,$returnonly & $linktype are not for the renderer but are used
+     * elsewhere - no need to implement them in other renderers
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     * @param string      $id         pageid
+     * @param string|null $name       link name
+     * @param string|null $search     adds search url param
+     * @param bool        $returnonly whether to return html or write to doc attribute
+     * @param string      $linktype   type to set use of headings
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function internallink($id, $name = null, $search = null, $returnonly = false, $linktype = 'content') {
+        global $conf;
+        global $ID;
+        global $INFO;
+
+        $params = '';
+        $parts  = explode('?', $id, 2);
+        if(count($parts) === 2) {
+            $id     = $parts[0];
+            $params = $parts[1];
+        }
+
+        // For empty $id we need to know the current $ID
+        // We need this check because _simpleTitle needs
+        // correct $id and resolve_pageid() use cleanID($id)
+        // (some things could be lost)
+        if($id === '') {
+            $id = $ID;
+        }
+
+        // default name is based on $id as given
+        $default = $this->_simpleTitle($id);
+
+        // now first resolve and clean up the $id
+        resolve_pageid(getNS($ID), $id, $exists, $this->date_at, true);
+
+        $link = array();
+        $name = $this->_getLinkTitle($name, $default, $isImage, $id, $linktype);
+        if(!$isImage) {
+            if($exists) {
+                $class = 'wikilink1';
+            } else {
+                $class       = 'wikilink2';
+                $link['rel'] = 'nofollow';
+            }
+        } else {
+            $class = 'media';
+        }
+
+        //keep hash anchor
+        @list($id, $hash) = explode('#', $id, 2);
+        if(!empty($hash)) $hash = $this->_headerToLink($hash);
+
+        //prepare for formating
+        $link['target'] = $conf['target']['wiki'];
+        $link['style']  = '';
+        $link['pre']    = '';
+        $link['suf']    = '';
+        // highlight link to current page
+        if($id == $INFO['id']) {
+            $link['pre'] = '<span class="curid">';
+            $link['suf'] = '</span>';
+        }
+        $link['more']   = '';
+        $link['class']  = $class;
+        if($this->date_at) {
+            $params = $params.'&at='.rawurlencode($this->date_at);
+        }
+        $link['url']    = wl($id, $params);
+        $link['name']   = $name;
+        $link['title']  = $id;
+        //add search string
+        if($search) {
+            ($conf['userewrite']) ? $link['url'] .= '?' : $link['url'] .= '&amp;';
+            if(is_array($search)) {
+                $search = array_map('rawurlencode', $search);
+                $link['url'] .= 's[]='.join('&amp;s[]=', $search);
+            } else {
+                $link['url'] .= 's='.rawurlencode($search);
+            }
+        }
+
+        //keep hash
+        if($hash) $link['url'] .= '#'.$hash;
+
+        //output formatted
+        if($returnonly) {
+            return $this->_formatLink($link);
+        } else {
+            $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Render an external link
+     *
+     * @param string       $url        full URL with scheme
+     * @param string|array $name       name for the link, array for media file
+     * @param bool         $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function externallink($url, $name = null, $returnonly = false) {
+        global $conf;
+
+        $name = $this->_getLinkTitle($name, $url, $isImage);
+
+        // url might be an attack vector, only allow registered protocols
+        if(is_null($this->schemes)) $this->schemes = getSchemes();
+        list($scheme) = explode('://', $url);
+        $scheme = strtolower($scheme);
+        if(!in_array($scheme, $this->schemes)) $url = '';
+
+        // is there still an URL?
+        if(!$url) {
+            if($returnonly) {
+                return $name;
+            } else {
+                $this->doc .= $name;
+            }
+            return;
+        }
+
+        // set class
+        if(!$isImage) {
+            $class = 'urlextern';
+        } else {
+            $class = 'media';
+        }
+
+        //prepare for formating
+        $link = array();
+        $link['target'] = $conf['target']['extern'];
+        $link['style']  = '';
+        $link['pre']    = '';
+        $link['suf']    = '';
+        $link['more']   = '';
+        $link['class']  = $class;
+        $link['url']    = $url;
+        $link['rel']    = '';
+
+        $link['name']  = $name;
+        $link['title'] = $this->_xmlEntities($url);
+        if($conf['relnofollow']) $link['rel'] .= ' nofollow';
+        if($conf['target']['extern']) $link['rel'] .= ' noopener';
+
+        //output formatted
+        if($returnonly) {
+            return $this->_formatLink($link);
+        } else {
+            $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Render an interwiki link
+     *
+     * You may want to use $this->_resolveInterWiki() here
+     *
+     * @param string       $match      original link - probably not much use
+     * @param string|array $name       name for the link, array for media file
+     * @param string       $wikiName   indentifier (shortcut) for the remote wiki
+     * @param string       $wikiUri    the fragment parsed from the original link
+     * @param bool         $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function interwikilink($match, $name = null, $wikiName, $wikiUri, $returnonly = false) {
+        global $conf;
+
+        $link           = array();
+        $link['target'] = $conf['target']['interwiki'];
+        $link['pre']    = '';
+        $link['suf']    = '';
+        $link['more']   = '';
+        $link['name']   = $this->_getLinkTitle($name, $wikiUri, $isImage);
+        $link['rel']    = '';
+
+        //get interwiki URL
+        $exists = null;
+        $url    = $this->_resolveInterWiki($wikiName, $wikiUri, $exists);
+
+        if(!$isImage) {
+            $class         = preg_replace('/[^_\-a-z0-9]+/i', '_', $wikiName);
+            $link['class'] = "interwiki iw_$class";
+        } else {
+            $link['class'] = 'media';
+        }
+
+        //do we stay at the same server? Use local target
+        if(strpos($url, DOKU_URL) === 0 OR strpos($url, DOKU_BASE) === 0) {
+            $link['target'] = $conf['target']['wiki'];
+        }
+        if($exists !== null && !$isImage) {
+            if($exists) {
+                $link['class'] .= ' wikilink1';
+            } else {
+                $link['class'] .= ' wikilink2';
+                $link['rel'] .= ' nofollow';
+            }
+        }
+        if($conf['target']['interwiki']) $link['rel'] .= ' noopener';
+
+        $link['url']   = $url;
+        $link['title'] = htmlspecialchars($link['url']);
+
+        //output formatted
+        if($returnonly) {
+            return $this->_formatLink($link);
+        } else {
+            $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Link to windows share
+     *
+     * @param string       $url        the link
+     * @param string|array $name       name for the link, array for media file
+     * @param bool         $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function windowssharelink($url, $name = null, $returnonly = false) {
+        global $conf;
+
+        //simple setup
+        $link = array();
+        $link['target'] = $conf['target']['windows'];
+        $link['pre']    = '';
+        $link['suf']    = '';
+        $link['style']  = '';
+
+        $link['name'] = $this->_getLinkTitle($name, $url, $isImage);
+        if(!$isImage) {
+            $link['class'] = 'windows';
+        } else {
+            $link['class'] = 'media';
+        }
+
+        $link['title'] = $this->_xmlEntities($url);
+        $url           = str_replace('\\', '/', $url);
+        $url           = 'file:///'.$url;
+        $link['url']   = $url;
+
+        //output formatted
+        if($returnonly) {
+            return $this->_formatLink($link);
+        } else {
+            $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Render a linked E-Mail Address
+     *
+     * Honors $conf['mailguard'] setting
+     *
+     * @param string       $address    Email-Address
+     * @param string|array $name       name for the link, array for media file
+     * @param bool         $returnonly whether to return html or write to doc attribute
+     * @return void|string writes to doc attribute or returns html depends on $returnonly
+     */
+    function emaillink($address, $name = null, $returnonly = false) {
+        global $conf;
+        //simple setup
+        $link           = array();
+        $link['target'] = '';
+        $link['pre']    = '';
+        $link['suf']    = '';
+        $link['style']  = '';
+        $link['more']   = '';
+
+        $name = $this->_getLinkTitle($name, '', $isImage);
+        if(!$isImage) {
+            $link['class'] = 'mail';
+        } else {
+            $link['class'] = 'media';
+        }
+
+        $address = $this->_xmlEntities($address);
+        $address = obfuscate($address);
+        $title   = $address;
+
+        if(empty($name)) {
+            $name = $address;
+        }
+
+        if($conf['mailguard'] == 'visible') $address = rawurlencode($address);
+
+        $link['url']   = 'mailto:'.$address;
+        $link['name']  = $name;
+        $link['title'] = $title;
+
+        //output formatted
+        if($returnonly) {
+            return $this->_formatLink($link);
+        } else {
+            $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Render an internal media file
+     *
+     * @param string $src       media ID
+     * @param string $title     descriptive text
+     * @param string $align     left|center|right
+     * @param int    $width     width of media in pixel
+     * @param int    $height    height of media in pixel
+     * @param string $cache     cache|recache|nocache
+     * @param string $linking   linkonly|detail|nolink
+     * @param bool   $return    return HTML instead of adding to $doc
+     * @return void|string writes to doc attribute or returns html depends on $return
+     */
+    function internalmedia($src, $title = null, $align = null, $width = null,
+                           $height = null, $cache = null, $linking = null, $return = false) {
+        global $ID;
+        if (strpos($src, '#') !== false) {
+            list($src, $hash) = explode('#', $src, 2);
+        }
+        resolve_mediaid(getNS($ID), $src, $exists, $this->date_at, true);
+
+        $noLink = false;
+        $render = ($linking == 'linkonly') ? false : true;
+        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render);
+
+        list($ext, $mime) = mimetype($src, false);
+        if(substr($mime, 0, 5) == 'image' && $render) {
+            $link['url'] = ml($src, array('id' => $ID, 'cache' => $cache, 'rev'=>$this->_getLastMediaRevisionAt($src)), ($linking == 'direct'));
+        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
+            // don't link movies
+            $noLink = true;
+        } else {
+            // add file icons
+            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
+            $link['class'] .= ' mediafile mf_'.$class;
+            $link['url'] = ml($src, array('id' => $ID, 'cache' => $cache , 'rev'=>$this->_getLastMediaRevisionAt($src)), true);
+            if($exists) $link['title'] .= ' ('.filesize_h(filesize(mediaFN($src))).')';
+        }
+
+        if (!empty($hash)) $link['url'] .= '#'.$hash;
+
+        //markup non existing files
+        if(!$exists) {
+            $link['class'] .= ' wikilink2';
+        }
+
+        //output formatted
+        if($return) {
+            if($linking == 'nolink' || $noLink) return $link['name'];
+            else return $this->_formatLink($link);
+        } else {
+            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
+            else $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Render an external media file
+     *
+     * @param string $src     full media URL
+     * @param string $title   descriptive text
+     * @param string $align   left|center|right
+     * @param int    $width   width of media in pixel
+     * @param int    $height  height of media in pixel
+     * @param string $cache   cache|recache|nocache
+     * @param string $linking linkonly|detail|nolink
+     * @param bool   $return  return HTML instead of adding to $doc
+     * @return void|string writes to doc attribute or returns html depends on $return
+     */
+    function externalmedia($src, $title = null, $align = null, $width = null,
+                           $height = null, $cache = null, $linking = null, $return = false) {
+        if(link_isinterwiki($src)){
+            list($shortcut, $reference) = explode('>', $src, 2);
+            $exists = null;
+            $src = $this->_resolveInterWiki($shortcut, $reference, $exists);
+        }
+        list($src, $hash) = explode('#', $src, 2);
+        $noLink = false;
+        $render = ($linking == 'linkonly') ? false : true;
+        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render);
+
+        $link['url'] = ml($src, array('cache' => $cache));
+
+        list($ext, $mime) = mimetype($src, false);
+        if(substr($mime, 0, 5) == 'image' && $render) {
+            // link only jpeg images
+            // if ($ext != 'jpg' && $ext != 'jpeg') $noLink = true;
+        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
+            // don't link movies
+            $noLink = true;
+        } else {
+            // add file icons
+            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
+            $link['class'] .= ' mediafile mf_'.$class;
+        }
+
+        if($hash) $link['url'] .= '#'.$hash;
+
+        //output formatted
+        if($return) {
+            if($linking == 'nolink' || $noLink) return $link['name'];
+            else return $this->_formatLink($link);
+        } else {
+            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
+            else $this->doc .= $this->_formatLink($link);
+        }
+    }
+
+    /**
+     * Renders an RSS feed
+     *
+     * @param string $url    URL of the feed
+     * @param array  $params Finetuning of the output
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function rss($url, $params) {
+        global $lang;
+        global $conf;
+
+        require_once(DOKU_INC.'inc/FeedParser.php');
+        $feed = new FeedParser();
+        $feed->set_feed_url($url);
+
+        //disable warning while fetching
+        if(!defined('DOKU_E_LEVEL')) {
+            $elvl = error_reporting(E_ERROR);
+        }
+        $rc = $feed->init();
+        if(isset($elvl)) {
+            error_reporting($elvl);
+        }
+
+        if($params['nosort']) $feed->enable_order_by_date(false);
+
+        //decide on start and end
+        if($params['reverse']) {
+            $mod   = -1;
+            $start = $feed->get_item_quantity() - 1;
+            $end   = $start - ($params['max']);
+            $end   = ($end < -1) ? -1 : $end;
+        } else {
+            $mod   = 1;
+            $start = 0;
+            $end   = $feed->get_item_quantity();
+            $end   = ($end > $params['max']) ? $params['max'] : $end;
+        }
+
+        $this->doc .= '<ul class="rss">';
+        if($rc) {
+            for($x = $start; $x != $end; $x += $mod) {
+                $item = $feed->get_item($x);
+                $this->doc .= '<li><div class="li">';
+                // support feeds without links
+                $lnkurl = $item->get_permalink();
+                if($lnkurl) {
+                    // title is escaped by SimplePie, we unescape here because it
+                    // is escaped again in externallink() FS#1705
+                    $this->externallink(
+                        $item->get_permalink(),
+                        html_entity_decode($item->get_title(), ENT_QUOTES, 'UTF-8')
+                    );
+                } else {
+                    $this->doc .= ' '.$item->get_title();
+                }
+                if($params['author']) {
+                    $author = $item->get_author(0);
+                    if($author) {
+                        $name = $author->get_name();
+                        if(!$name) $name = $author->get_email();
+                        if($name) $this->doc .= ' '.$lang['by'].' '.hsc($name);
+                    }
+                }
+                if($params['date']) {
+                    $this->doc .= ' ('.$item->get_local_date($conf['dformat']).')';
+                }
+                if($params['details']) {
+                    $this->doc .= '<div class="detail">';
+                    if($conf['htmlok']) {
+                        $this->doc .= $item->get_description();
+                    } else {
+                        $this->doc .= strip_tags($item->get_description());
+                    }
+                    $this->doc .= '</div>';
+                }
+
+                $this->doc .= '</div></li>';
+            }
+        } else {
+            $this->doc .= '<li><div class="li">';
+            $this->doc .= '<em>'.$lang['rssfailed'].'</em>';
+            $this->externallink($url);
+            if($conf['allowdebug']) {
+                $this->doc .= '<!--'.hsc($feed->error).'-->';
+            }
+            $this->doc .= '</div></li>';
+        }
+        $this->doc .= '</ul>';
+    }
+
+    /**
+     * Start a table
+     *
+     * @param int $maxcols maximum number of columns
+     * @param int $numrows NOT IMPLEMENTED
+     * @param int $pos byte position in the original source
+     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function table_open($maxcols = null, $numrows = null, $pos = null, $classes = null) {
+        // initialize the row counter used for classes
+        $this->_counter['row_counter'] = 0;
+        $class                         = 'table';
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class .= ' ' . $classes;
+        }
+        if($pos !== null) {
+            $hid = $this->_headerToLink($class, true);
+            $data = array();
+            $data['target'] = 'table';
+            $data['name'] = '';
+            $data['hid'] = $hid;
+            $class .= ' '.$this->startSectionEdit($pos, $data);
+        }
+        $this->doc .= '<div class="'.$class.'"><table class="inline">'.
+            DOKU_LF;
+    }
+
+    /**
+     * Close a table
+     *
+     * @param int $pos byte position in the original source
+     */
+    function table_close($pos = null) {
+        $this->doc .= '</table></div>'.DOKU_LF;
+        if($pos !== null) {
+            $this->finishSectionEdit($pos);
+        }
+    }
+
+    /**
+     * Open a table header
+     */
+    function tablethead_open() {
+        $this->doc .= DOKU_TAB.'<thead>'.DOKU_LF;
+    }
+
+    /**
+     * Close a table header
+     */
+    function tablethead_close() {
+        $this->doc .= DOKU_TAB.'</thead>'.DOKU_LF;
+    }
+
+    /**
+     * Open a table body
+     */
+    function tabletbody_open() {
+        $this->doc .= DOKU_TAB.'<tbody>'.DOKU_LF;
+    }
+
+    /**
+     * Close a table body
+     */
+    function tabletbody_close() {
+        $this->doc .= DOKU_TAB.'</tbody>'.DOKU_LF;
+    }
+
+    /**
+     * Open a table footer
+     */
+    function tabletfoot_open() {
+        $this->doc .= DOKU_TAB.'<tfoot>'.DOKU_LF;
+    }
+
+    /**
+     * Close a table footer
+     */
+    function tabletfoot_close() {
+        $this->doc .= DOKU_TAB.'</tfoot>'.DOKU_LF;
+    }
+
+    /**
+     * Open a table row
+     *
+     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function tablerow_open($classes = null) {
+        // initialize the cell counter used for classes
+        $this->_counter['cell_counter'] = 0;
+        $class                          = 'row'.$this->_counter['row_counter']++;
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class .= ' ' . $classes;
+        }
+        $this->doc .= DOKU_TAB.'<tr class="'.$class.'">'.DOKU_LF.DOKU_TAB.DOKU_TAB;
+    }
+
+    /**
+     * Close a table row
+     */
+    function tablerow_close() {
+        $this->doc .= DOKU_LF.DOKU_TAB.'</tr>'.DOKU_LF;
+    }
+
+    /**
+     * Open a table header cell
+     *
+     * @param int    $colspan
+     * @param string $align left|center|right
+     * @param int    $rowspan
+     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function tableheader_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
+        $class = 'class="col'.$this->_counter['cell_counter']++;
+        if(!is_null($align)) {
+            $class .= ' '.$align.'align';
+        }
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class .= ' ' . $classes;
+        }
+        $class .= '"';
+        $this->doc .= '<th '.$class;
+        if($colspan > 1) {
+            $this->_counter['cell_counter'] += $colspan - 1;
+            $this->doc .= ' colspan="'.$colspan.'"';
+        }
+        if($rowspan > 1) {
+            $this->doc .= ' rowspan="'.$rowspan.'"';
+        }
+        $this->doc .= '>';
+    }
+
+    /**
+     * Close a table header cell
+     */
+    function tableheader_close() {
+        $this->doc .= '</th>';
+    }
+
+    /**
+     * Open a table cell
+     *
+     * @param int       $colspan
+     * @param string    $align left|center|right
+     * @param int       $rowspan
+     * @param string|string[]    $classes css classes - have to be valid, do not pass unfiltered user input
+     */
+    function tablecell_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
+        $class = 'class="col'.$this->_counter['cell_counter']++;
+        if(!is_null($align)) {
+            $class .= ' '.$align.'align';
+        }
+        if($classes !== null) {
+            if(is_array($classes)) $classes = join(' ', $classes);
+            $class .= ' ' . $classes;
+        }
+        $class .= '"';
+        $this->doc .= '<td '.$class;
+        if($colspan > 1) {
+            $this->_counter['cell_counter'] += $colspan - 1;
+            $this->doc .= ' colspan="'.$colspan.'"';
+        }
+        if($rowspan > 1) {
+            $this->doc .= ' rowspan="'.$rowspan.'"';
+        }
+        $this->doc .= '>';
+    }
+
+    /**
+     * Close a table cell
+     */
+    function tablecell_close() {
+        $this->doc .= '</td>';
+    }
+
+    /**
+     * Returns the current header level.
+     * (required e.g. by the filelist plugin)
+     *
+     * @return int The current header level
+     */
+    function getLastlevel() {
+        return $this->lastlevel;
+    }
+
+    #region Utility functions
+
+    /**
+     * Build a link
+     *
+     * Assembles all parts defined in $link returns HTML for the link
+     *
+     * @param array $link attributes of a link
+     * @return string
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function _formatLink($link) {
+        //make sure the url is XHTML compliant (skip mailto)
+        if(substr($link['url'], 0, 7) != 'mailto:') {
+            $link['url'] = str_replace('&', '&amp;', $link['url']);
+            $link['url'] = str_replace('&amp;amp;', '&amp;', $link['url']);
+        }
+        //remove double encodings in titles
+        $link['title'] = str_replace('&amp;amp;', '&amp;', $link['title']);
+
+        // be sure there are no bad chars in url or title
+        // (we can't do this for name because it can contain an img tag)
+        $link['url']   = strtr($link['url'], array('>' => '%3E', '<' => '%3C', '"' => '%22'));
+        $link['title'] = strtr($link['title'], array('>' => '&gt;', '<' => '&lt;', '"' => '&quot;'));
+
+        $ret = '';
+        $ret .= $link['pre'];
+        $ret .= '<a href="'.$link['url'].'"';
+        if(!empty($link['class'])) $ret .= ' class="'.$link['class'].'"';
+        if(!empty($link['target'])) $ret .= ' target="'.$link['target'].'"';
+        if(!empty($link['title'])) $ret .= ' title="'.$link['title'].'"';
+        if(!empty($link['style'])) $ret .= ' style="'.$link['style'].'"';
+        if(!empty($link['rel'])) $ret .= ' rel="'.trim($link['rel']).'"';
+        if(!empty($link['more'])) $ret .= ' '.$link['more'];
+        $ret .= '>';
+        $ret .= $link['name'];
+        $ret .= '</a>';
+        $ret .= $link['suf'];
+        return $ret;
+    }
+
+    /**
+     * Renders internal and external media
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     * @param string $src       media ID
+     * @param string $title     descriptive text
+     * @param string $align     left|center|right
+     * @param int    $width     width of media in pixel
+     * @param int    $height    height of media in pixel
+     * @param string $cache     cache|recache|nocache
+     * @param bool   $render    should the media be embedded inline or just linked
+     * @return string
+     */
+    function _media($src, $title = null, $align = null, $width = null,
+                    $height = null, $cache = null, $render = true) {
+
+        $ret = '';
+
+        list($ext, $mime) = mimetype($src);
+        if(substr($mime, 0, 5) == 'image') {
+            // first get the $title
+            if(!is_null($title)) {
+                $title = $this->_xmlEntities($title);
+            } elseif($ext == 'jpg' || $ext == 'jpeg') {
+                //try to use the caption from IPTC/EXIF
+                require_once(DOKU_INC.'inc/JpegMeta.php');
+                $jpeg = new JpegMeta(mediaFN($src));
+                if($jpeg !== false) $cap = $jpeg->getTitle();
+                if(!empty($cap)) {
+                    $title = $this->_xmlEntities($cap);
+                }
+            }
+            if(!$render) {
+                // if the picture is not supposed to be rendered
+                // return the title of the picture
+                if(!$title) {
+                    // just show the sourcename
+                    $title = $this->_xmlEntities(utf8_basename(noNS($src)));
+                }
+                return $title;
+            }
+            //add image tag
+            $ret .= '<img src="'.ml($src, array('w' => $width, 'h' => $height, 'cache' => $cache, 'rev'=>$this->_getLastMediaRevisionAt($src))).'"';
+            $ret .= ' class="media'.$align.'"';
+
+            if($title) {
+                $ret .= ' title="'.$title.'"';
+                $ret .= ' alt="'.$title.'"';
+            } else {
+                $ret .= ' alt=""';
+            }
+
+            if(!is_null($width))
+                $ret .= ' width="'.$this->_xmlEntities($width).'"';
+
+            if(!is_null($height))
+                $ret .= ' height="'.$this->_xmlEntities($height).'"';
+
+            $ret .= ' />';
+
+        } elseif(media_supportedav($mime, 'video') || media_supportedav($mime, 'audio')) {
+            // first get the $title
+            $title = !is_null($title) ? $this->_xmlEntities($title) : false;
+            if(!$render) {
+                // if the file is not supposed to be rendered
+                // return the title of the file (just the sourcename if there is no title)
+                return $title ? $title : $this->_xmlEntities(utf8_basename(noNS($src)));
+            }
+
+            $att          = array();
+            $att['class'] = "media$align";
+            if($title) {
+                $att['title'] = $title;
+            }
+
+            if(media_supportedav($mime, 'video')) {
+                //add video
+                $ret .= $this->_video($src, $width, $height, $att);
+            }
+            if(media_supportedav($mime, 'audio')) {
+                //add audio
+                $ret .= $this->_audio($src, $att);
+            }
+
+        } elseif($mime == 'application/x-shockwave-flash') {
+            if(!$render) {
+                // if the flash is not supposed to be rendered
+                // return the title of the flash
+                if(!$title) {
+                    // just show the sourcename
+                    $title = utf8_basename(noNS($src));
+                }
+                return $this->_xmlEntities($title);
+            }
+
+            $att          = array();
+            $att['class'] = "media$align";
+            if($align == 'right') $att['align'] = 'right';
+            if($align == 'left') $att['align'] = 'left';
+            $ret .= html_flashobject(
+                ml($src, array('cache' => $cache), true, '&'), $width, $height,
+                array('quality' => 'high'),
+                null,
+                $att,
+                $this->_xmlEntities($title)
+            );
+        } elseif($title) {
+            // well at least we have a title to display
+            $ret .= $this->_xmlEntities($title);
+        } else {
+            // just show the sourcename
+            $ret .= $this->_xmlEntities(utf8_basename(noNS($src)));
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Escape string for output
+     *
+     * @param $string
+     * @return string
+     */
+    function _xmlEntities($string) {
+        return htmlspecialchars($string, ENT_QUOTES, 'UTF-8');
+    }
+
+    /**
+     * Creates a linkid from a headline
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     * @param string  $title   The headline title
+     * @param boolean $create  Create a new unique ID?
+     * @return string
+     */
+    function _headerToLink($title, $create = false) {
+        if($create) {
+            return sectionID($title, $this->headers);
+        } else {
+            $check = false;
+            return sectionID($title, $check);
+        }
+    }
+
+    /**
+     * Construct a title and handle images in titles
+     *
+     * @author Harry Fuecks <hfuecks@gmail.com>
+     * @param string|array $title    either string title or media array
+     * @param string       $default  default title if nothing else is found
+     * @param bool         $isImage  will be set to true if it's a media file
+     * @param null|string  $id       linked page id (used to extract title from first heading)
+     * @param string       $linktype content|navigation
+     * @return string      HTML of the title, might be full image tag or just escaped text
+     */
+    function _getLinkTitle($title, $default, &$isImage, $id = null, $linktype = 'content') {
+        $isImage = false;
+        if(is_array($title)) {
+            $isImage = true;
+            return $this->_imageTitle($title);
+        } elseif(is_null($title) || trim($title) == '') {
+            if(useHeading($linktype) && $id) {
+                $heading = p_get_first_heading($id);
+                if(!blank($heading)) {
+                    return $this->_xmlEntities($heading);
+                }
+            }
+            return $this->_xmlEntities($default);
+        } else {
+            return $this->_xmlEntities($title);
+        }
+    }
+
+    /**
+     * Returns HTML code for images used in link titles
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     * @param array $img
+     * @return string HTML img tag or similar
+     */
+    function _imageTitle($img) {
+        global $ID;
+
+        // some fixes on $img['src']
+        // see internalmedia() and externalmedia()
+        list($img['src']) = explode('#', $img['src'], 2);
+        if($img['type'] == 'internalmedia') {
+            resolve_mediaid(getNS($ID), $img['src'], $exists ,$this->date_at, true);
+        }
+
+        return $this->_media(
+            $img['src'],
+            $img['title'],
+            $img['align'],
+            $img['width'],
+            $img['height'],
+            $img['cache']
+        );
+    }
+
+    /**
+     * helperfunction to return a basic link to a media
+     *
+     * used in internalmedia() and externalmedia()
+     *
+     * @author   Pierre Spring <pierre.spring@liip.ch>
+     * @param string $src       media ID
+     * @param string $title     descriptive text
+     * @param string $align     left|center|right
+     * @param int    $width     width of media in pixel
+     * @param int    $height    height of media in pixel
+     * @param string $cache     cache|recache|nocache
+     * @param bool   $render    should the media be embedded inline or just linked
+     * @return array associative array with link config
+     */
+    function _getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render) {
+        global $conf;
+
+        $link           = array();
+        $link['class']  = 'media';
+        $link['style']  = '';
+        $link['pre']    = '';
+        $link['suf']    = '';
+        $link['more']   = '';
+        $link['target'] = $conf['target']['media'];
+        if($conf['target']['media']) $link['rel'] = 'noopener';
+        $link['title']  = $this->_xmlEntities($src);
+        $link['name']   = $this->_media($src, $title, $align, $width, $height, $cache, $render);
+
+        return $link;
+    }
+
+    /**
+     * Embed video(s) in HTML
+     *
+     * @author Anika Henke <anika@selfthinker.org>
+     * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
+     *
+     * @param string $src         - ID of video to embed
+     * @param int    $width       - width of the video in pixels
+     * @param int    $height      - height of the video in pixels
+     * @param array  $atts        - additional attributes for the <video> tag
+     * @return string
+     */
+    function _video($src, $width, $height, $atts = null) {
+        // prepare width and height
+        if(is_null($atts)) $atts = array();
+        $atts['width']  = (int) $width;
+        $atts['height'] = (int) $height;
+        if(!$atts['width']) $atts['width'] = 320;
+        if(!$atts['height']) $atts['height'] = 240;
+
+        $posterUrl = '';
+        $files = array();
+        $tracks = array();
+        $isExternal = media_isexternal($src);
+
+        if ($isExternal) {
+            // take direct source for external files
+            list(/*ext*/, $srcMime) = mimetype($src);
+            $files[$srcMime] = $src;
+        } else {
+            // prepare alternative formats
+            $extensions   = array('webm', 'ogv', 'mp4');
+            $files        = media_alternativefiles($src, $extensions);
+            $poster       = media_alternativefiles($src, array('jpg', 'png'));
+            $tracks       = media_trackfiles($src);
+            if(!empty($poster)) {
+                $posterUrl = ml(reset($poster), '', true, '&');
+            }
+        }
+
+        $out = '';
+        // open video tag
+        $out .= '<video '.buildAttributes($atts).' controls="controls"';
+        if($posterUrl) $out .= ' poster="'.hsc($posterUrl).'"';
+        $out .= '>'.NL;
+        $fallback = '';
+
+        // output source for each alternative video format
+        foreach($files as $mime => $file) {
+            if ($isExternal) {
+                $url = $file;
+                $linkType = 'externalmedia';
+            } else {
+                $url = ml($file, '', true, '&');
+                $linkType = 'internalmedia';
+            }
+            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(utf8_basename(noNS($file)));
+
+            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
+            // alternative content (just a link to the file)
+            $fallback .= $this->$linkType($file, $title, null, null, null, $cache = null, $linking = 'linkonly', $return = true);
+        }
+
+        // output each track if any
+        foreach( $tracks as $trackid => $info ) {
+            list( $kind, $srclang ) = array_map( 'hsc', $info );
+            $out .= "<track kind=\"$kind\" srclang=\"$srclang\" ";
+            $out .= "label=\"$srclang\" ";
+            $out .= 'src="'.ml($trackid, '', true).'">'.NL;
+        }
+
+        // finish
+        $out .= $fallback;
+        $out .= '</video>'.NL;
+        return $out;
+    }
+
+    /**
+     * Embed audio in HTML
+     *
+     * @author Anika Henke <anika@selfthinker.org>
+     *
+     * @param string $src       - ID of audio to embed
+     * @param array  $atts      - additional attributes for the <audio> tag
+     * @return string
+     */
+    function _audio($src, $atts = array()) {
+        $files = array();
+        $isExternal = media_isexternal($src);
+
+        if ($isExternal) {
+            // take direct source for external files
+            list(/*ext*/, $srcMime) = mimetype($src);
+            $files[$srcMime] = $src;
+        } else {
+            // prepare alternative formats
+            $extensions   = array('ogg', 'mp3', 'wav');
+            $files        = media_alternativefiles($src, $extensions);
+        }
+
+        $out = '';
+        // open audio tag
+        $out .= '<audio '.buildAttributes($atts).' controls="controls">'.NL;
+        $fallback = '';
+
+        // output source for each alternative audio format
+        foreach($files as $mime => $file) {
+            if ($isExternal) {
+                $url = $file;
+                $linkType = 'externalmedia';
+            } else {
+                $url = ml($file, '', true, '&');
+                $linkType = 'internalmedia';
+            }
+            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(utf8_basename(noNS($file)));
+
+            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
+            // alternative content (just a link to the file)
+            $fallback .= $this->$linkType($file, $title, null, null, null, $cache = null, $linking = 'linkonly', $return = true);
+        }
+
+        // finish
+        $out .= $fallback;
+        $out .= '</audio>'.NL;
+        return $out;
+    }
+
+    /**
+     * _getLastMediaRevisionAt is a helperfunction to internalmedia() and _media()
+     * which returns an existing media revision less or equal to rev or date_at
+     *
+     * @author lisps
+     * @param string $media_id
+     * @access protected
+     * @return string revision ('' for current)
+     */
+    function _getLastMediaRevisionAt($media_id){
+        if(!$this->date_at || media_isexternal($media_id)) return '';
+        $pagelog = new MediaChangeLog($media_id);
+        return $pagelog->getLastRevisionAt($this->date_at);
+    }
+
+    #endregion
+}
+
+//Setup VIM: ex: et ts=4 :