xref: /dokuwiki/inc/parser/xhtml.php (revision 03265e9985b99fba7cbdbed1a1ce29a4bc312506)
1<?php
2
3use dokuwiki\ChangeLog\MediaChangeLog;
4
5/**
6 * Renderer for XHTML output
7 *
8 * This is DokuWiki's main renderer used to display page content in the wiki
9 *
10 * @author Harry Fuecks <hfuecks@gmail.com>
11 * @author Andreas Gohr <andi@splitbrain.org>
12 *
13 */
14class Doku_Renderer_xhtml extends Doku_Renderer {
15    /** @var array store the table of contents */
16    public $toc = array();
17
18    /** @var array A stack of section edit data */
19    protected $sectionedits = array();
20
21    /** @var string|int link pages and media against this revision */
22    public $date_at = '';
23
24    /** @var int last section edit id, used by startSectionEdit */
25    protected $lastsecid = 0;
26
27    /** @var array a list of footnotes, list starts at 1! */
28    protected $footnotes = array();
29
30    /** @var int current section level */
31    protected $lastlevel = 0;
32    /** @var array section node tracker */
33    protected $node = array(0, 0, 0, 0, 0);
34
35    /** @var string temporary $doc store */
36    protected $store = '';
37
38    /** @var array global counter, for table classes etc. */
39    protected $_counter = array(); //
40
41    /** @var int counts the code and file blocks, used to provide download links */
42    protected $_codeblock = 0;
43
44    /** @var array list of allowed URL schemes */
45    protected $schemes = null;
46
47    /**
48     * Register a new edit section range
49     *
50     * @param int    $start  The byte position for the edit start
51     * @param array  $data   Associative array with section data:
52     *                       Key 'name': the section name/title
53     *                       Key 'target': the target for the section edit,
54     *                                     e.g. 'section' or 'table'
55     *                       Key 'hid': header id
56     *                       Key 'codeblockOffset': actual code block index
57     *                       Key 'start': set in startSectionEdit(),
58     *                                    do not set yourself
59     *                       Key 'range': calculated from 'start' and
60     *                                    $key in finishSectionEdit(),
61     *                                    do not set yourself
62     * @return string  A marker class for the starting HTML element
63     *
64     * @author Adrian Lang <lang@cosmocode.de>
65     */
66    public function startSectionEdit($start, $data) {
67        if (!is_array($data)) {
68            msg(
69                sprintf(
70                    'startSectionEdit: $data "%s" is NOT an array! One of your plugins needs an update.',
71                    hsc((string) $data)
72                ), -1
73            );
74
75            // @deprecated 2018-04-14, backward compatibility
76            $args = func_get_args();
77            $data = array();
78            if(isset($args[1])) $data['target'] = $args[1];
79            if(isset($args[2])) $data['name'] = $args[2];
80            if(isset($args[3])) $data['hid'] = $args[3];
81        }
82        $data['secid'] = ++$this->lastsecid;
83        $data['start'] = $start;
84        $this->sectionedits[] = $data;
85        return 'sectionedit'.$data['secid'];
86    }
87
88    /**
89     * Finish an edit section range
90     *
91     * @param int  $end     The byte position for the edit end; null for the rest of the page
92     *
93     * @author Adrian Lang <lang@cosmocode.de>
94     */
95    public function finishSectionEdit($end = null, $hid = null) {
96        $data = array_pop($this->sectionedits);
97        if(!is_null($end) && $end <= $data['start']) {
98            return;
99        }
100        if(!is_null($hid)) {
101            $data['hid'] .= $hid;
102        }
103        $data['range'] = $data['start'].'-'.(is_null($end) ? '' : $end);
104        unset($data['start']);
105        $this->doc .= '<!-- EDIT'.hsc(json_encode ($data)).' -->';
106    }
107
108    /**
109     * Returns the format produced by this renderer.
110     *
111     * @return string always 'xhtml'
112     */
113    public function getFormat() {
114        return 'xhtml';
115    }
116
117    /**
118     * Initialize the document
119     */
120    public function document_start() {
121        //reset some internals
122        $this->toc     = array();
123    }
124
125    /**
126     * Finalize the document
127     */
128    public function document_end() {
129        // Finish open section edits.
130        while(count($this->sectionedits) > 0) {
131            if($this->sectionedits[count($this->sectionedits) - 1]['start'] <= 1) {
132                // If there is only one section, do not write a section edit
133                // marker.
134                array_pop($this->sectionedits);
135            } else {
136                $this->finishSectionEdit();
137            }
138        }
139
140        if(count($this->footnotes) > 0) {
141            $this->doc .= '<div class="footnotes">'.DOKU_LF;
142
143            foreach($this->footnotes as $id => $footnote) {
144                // check its not a placeholder that indicates actual footnote text is elsewhere
145                if(substr($footnote, 0, 5) != "@@FNT") {
146
147                    // open the footnote and set the anchor and backlink
148                    $this->doc .= '<div class="fn">';
149                    $this->doc .= '<sup><a href="#fnt__'.$id.'" id="fn__'.$id.'" class="fn_bot">';
150                    $this->doc .= $id.')</a></sup> '.DOKU_LF;
151
152                    // get any other footnotes that use the same markup
153                    $alt = array_keys($this->footnotes, "@@FNT$id");
154
155                    if(count($alt)) {
156                        foreach($alt as $ref) {
157                            // set anchor and backlink for the other footnotes
158                            $this->doc .= ', <sup><a href="#fnt__'.($ref).'" id="fn__'.($ref).'" class="fn_bot">';
159                            $this->doc .= ($ref).')</a></sup> '.DOKU_LF;
160                        }
161                    }
162
163                    // add footnote markup and close this footnote
164                    $this->doc .= '<div class="content">'.$footnote.'</div>';
165                    $this->doc .= '</div>'.DOKU_LF;
166                }
167            }
168            $this->doc .= '</div>'.DOKU_LF;
169        }
170
171        // Prepare the TOC
172        global $conf;
173        if(
174            $this->info['toc'] &&
175            is_array($this->toc) &&
176            $conf['tocminheads'] && count($this->toc) >= $conf['tocminheads']
177        ) {
178            global $TOC;
179            $TOC = $this->toc;
180        }
181
182        // make sure there are no empty paragraphs
183        $this->doc = preg_replace('#<p>\s*</p>#', '', $this->doc);
184    }
185
186    /**
187     * Add an item to the TOC
188     *
189     * @param string $id       the hash link
190     * @param string $text     the text to display
191     * @param int    $level    the nesting level
192     */
193    public function toc_additem($id, $text, $level) {
194        global $conf;
195
196        //handle TOC
197        if($level >= $conf['toptoclevel'] && $level <= $conf['maxtoclevel']) {
198            $this->toc[] = html_mktocitem($id, $text, $level - $conf['toptoclevel'] + 1);
199        }
200    }
201
202    /**
203     * Render a heading
204     *
205     * @param string $text  the text to display
206     * @param int    $level header level
207     * @param int    $pos   byte position in the original source
208     */
209    public function header($text, $level, $pos) {
210        global $conf;
211
212        if(blank($text)) return; //skip empty headlines
213
214        $hid = $this->_headerToLink($text, true);
215
216        //only add items within configured levels
217        $this->toc_additem($hid, $text, $level);
218
219        // adjust $node to reflect hierarchy of levels
220        $this->node[$level - 1]++;
221        if($level < $this->lastlevel) {
222            for($i = 0; $i < $this->lastlevel - $level; $i++) {
223                $this->node[$this->lastlevel - $i - 1] = 0;
224            }
225        }
226        $this->lastlevel = $level;
227
228        if($level <= $conf['maxseclevel'] &&
229            count($this->sectionedits) > 0 &&
230            $this->sectionedits[count($this->sectionedits) - 1]['target'] === 'section'
231        ) {
232            $this->finishSectionEdit($pos - 1);
233        }
234
235        // write the header
236        $this->doc .= DOKU_LF.'<h'.$level;
237        if($level <= $conf['maxseclevel']) {
238            $data = array();
239            $data['target'] = 'section';
240            $data['name'] = $text;
241            $data['hid'] = $hid;
242            $data['codeblockOffset'] = $this->_codeblock;
243            $this->doc .= ' class="'.$this->startSectionEdit($pos, $data).'"';
244        }
245        $this->doc .= ' id="'.$hid.'">';
246        $this->doc .= $this->_xmlEntities($text);
247        $this->doc .= "</h$level>".DOKU_LF;
248    }
249
250    /**
251     * Open a new section
252     *
253     * @param int $level section level (as determined by the previous header)
254     */
255    public function section_open($level) {
256        $this->doc .= '<div class="level'.$level.'">'.DOKU_LF;
257    }
258
259    /**
260     * Close the current section
261     */
262    public function section_close() {
263        $this->doc .= DOKU_LF.'</div>'.DOKU_LF;
264    }
265
266    /**
267     * Render plain text data
268     *
269     * @param $text
270     */
271    public function cdata($text) {
272        $this->doc .= $this->_xmlEntities($text);
273    }
274
275    /**
276     * Open a paragraph
277     */
278    public function p_open() {
279        $this->doc .= DOKU_LF.'<p>'.DOKU_LF;
280    }
281
282    /**
283     * Close a paragraph
284     */
285    public function p_close() {
286        $this->doc .= DOKU_LF.'</p>'.DOKU_LF;
287    }
288
289    /**
290     * Create a line break
291     */
292    public function linebreak() {
293        $this->doc .= '<br/>'.DOKU_LF;
294    }
295
296    /**
297     * Create a horizontal line
298     */
299    public function hr() {
300        $this->doc .= '<hr />'.DOKU_LF;
301    }
302
303    /**
304     * Start strong (bold) formatting
305     */
306    public function strong_open() {
307        $this->doc .= '<strong>';
308    }
309
310    /**
311     * Stop strong (bold) formatting
312     */
313    public function strong_close() {
314        $this->doc .= '</strong>';
315    }
316
317    /**
318     * Start emphasis (italics) formatting
319     */
320    public function emphasis_open() {
321        $this->doc .= '<em>';
322    }
323
324    /**
325     * Stop emphasis (italics) formatting
326     */
327    public function emphasis_close() {
328        $this->doc .= '</em>';
329    }
330
331    /**
332     * Start underline formatting
333     */
334    public function underline_open() {
335        $this->doc .= '<em class="u">';
336    }
337
338    /**
339     * Stop underline formatting
340     */
341    public function underline_close() {
342        $this->doc .= '</em>';
343    }
344
345    /**
346     * Start monospace formatting
347     */
348    public function monospace_open() {
349        $this->doc .= '<code>';
350    }
351
352    /**
353     * Stop monospace formatting
354     */
355    public function monospace_close() {
356        $this->doc .= '</code>';
357    }
358
359    /**
360     * Start a subscript
361     */
362    public function subscript_open() {
363        $this->doc .= '<sub>';
364    }
365
366    /**
367     * Stop a subscript
368     */
369    public function subscript_close() {
370        $this->doc .= '</sub>';
371    }
372
373    /**
374     * Start a superscript
375     */
376    public function superscript_open() {
377        $this->doc .= '<sup>';
378    }
379
380    /**
381     * Stop a superscript
382     */
383    public function superscript_close() {
384        $this->doc .= '</sup>';
385    }
386
387    /**
388     * Start deleted (strike-through) formatting
389     */
390    public function deleted_open() {
391        $this->doc .= '<del>';
392    }
393
394    /**
395     * Stop deleted (strike-through) formatting
396     */
397    public function deleted_close() {
398        $this->doc .= '</del>';
399    }
400
401    /**
402     * Callback for footnote start syntax
403     *
404     * All following content will go to the footnote instead of
405     * the document. To achieve this the previous rendered content
406     * is moved to $store and $doc is cleared
407     *
408     * @author Andreas Gohr <andi@splitbrain.org>
409     */
410    public function footnote_open() {
411
412        // move current content to store and record footnote
413        $this->store = $this->doc;
414        $this->doc   = '';
415    }
416
417    /**
418     * Callback for footnote end syntax
419     *
420     * All rendered content is moved to the $footnotes array and the old
421     * content is restored from $store again
422     *
423     * @author Andreas Gohr
424     */
425    public function footnote_close() {
426        /** @var $fnid int takes track of seen footnotes, assures they are unique even across multiple docs FS#2841 */
427        static $fnid = 0;
428        // assign new footnote id (we start at 1)
429        $fnid++;
430
431        // recover footnote into the stack and restore old content
432        $footnote    = $this->doc;
433        $this->doc   = $this->store;
434        $this->store = '';
435
436        // check to see if this footnote has been seen before
437        $i = array_search($footnote, $this->footnotes);
438
439        if($i === false) {
440            // its a new footnote, add it to the $footnotes array
441            $this->footnotes[$fnid] = $footnote;
442        } else {
443            // seen this one before, save a placeholder
444            $this->footnotes[$fnid] = "@@FNT".($i);
445        }
446
447        // output the footnote reference and link
448        $this->doc .= '<sup><a href="#fn__'.$fnid.'" id="fnt__'.$fnid.'" class="fn_top">'.$fnid.')</a></sup>';
449    }
450
451    /**
452     * Open an unordered list
453     *
454     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
455     */
456    public function listu_open($classes = null) {
457        $class = '';
458        if($classes !== null) {
459            if(is_array($classes)) $classes = join(' ', $classes);
460            $class = " class=\"$classes\"";
461        }
462        $this->doc .= "<ul$class>".DOKU_LF;
463    }
464
465    /**
466     * Close an unordered list
467     */
468    public function listu_close() {
469        $this->doc .= '</ul>'.DOKU_LF;
470    }
471
472    /**
473     * Open an ordered list
474     *
475     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
476     */
477    public function listo_open($classes = null) {
478        $class = '';
479        if($classes !== null) {
480            if(is_array($classes)) $classes = join(' ', $classes);
481            $class = " class=\"$classes\"";
482        }
483        $this->doc .= "<ol$class>".DOKU_LF;
484    }
485
486    /**
487     * Close an ordered list
488     */
489    public function listo_close() {
490        $this->doc .= '</ol>'.DOKU_LF;
491    }
492
493    /**
494     * Open a list item
495     *
496     * @param int $level the nesting level
497     * @param bool $node true when a node; false when a leaf
498     */
499    public function listitem_open($level, $node=false) {
500        $branching = $node ? ' node' : '';
501        $this->doc .= '<li class="level'.$level.$branching.'">';
502    }
503
504    /**
505     * Close a list item
506     */
507    public function listitem_close() {
508        $this->doc .= '</li>'.DOKU_LF;
509    }
510
511    /**
512     * Start the content of a list item
513     */
514    public function listcontent_open() {
515        $this->doc .= '<div class="li">';
516    }
517
518    /**
519     * Stop the content of a list item
520     */
521    public function listcontent_close() {
522        $this->doc .= '</div>'.DOKU_LF;
523    }
524
525    /**
526     * Output unformatted $text
527     *
528     * Defaults to $this->cdata()
529     *
530     * @param string $text
531     */
532    public function unformatted($text) {
533        $this->doc .= $this->_xmlEntities($text);
534    }
535
536    /**
537     * Execute PHP code if allowed
538     *
539     * @param  string $text      PHP code that is either executed or printed
540     * @param  string $wrapper   html element to wrap result if $conf['phpok'] is okff
541     *
542     * @author Andreas Gohr <andi@splitbrain.org>
543     */
544    public function php($text, $wrapper = 'code') {
545        global $conf;
546
547        if($conf['phpok']) {
548            ob_start();
549            eval($text);
550            $this->doc .= ob_get_contents();
551            ob_end_clean();
552        } else {
553            $this->doc .= p_xhtml_cached_geshi($text, 'php', $wrapper);
554        }
555    }
556
557    /**
558     * Output block level PHP code
559     *
560     * If $conf['phpok'] is true this should evaluate the given code and append the result
561     * to $doc
562     *
563     * @param string $text The PHP code
564     */
565    public function phpblock($text) {
566        $this->php($text, 'pre');
567    }
568
569    /**
570     * Insert HTML if allowed
571     *
572     * @param  string $text      html text
573     * @param  string $wrapper   html element to wrap result if $conf['htmlok'] is okff
574     *
575     * @author Andreas Gohr <andi@splitbrain.org>
576     */
577    public function html($text, $wrapper = 'code') {
578        global $conf;
579
580        if($conf['htmlok']) {
581            $this->doc .= $text;
582        } else {
583            $this->doc .= p_xhtml_cached_geshi($text, 'html4strict', $wrapper);
584        }
585    }
586
587    /**
588     * Output raw block-level HTML
589     *
590     * If $conf['htmlok'] is true this should add the code as is to $doc
591     *
592     * @param string $text The HTML
593     */
594    public function htmlblock($text) {
595        $this->html($text, 'pre');
596    }
597
598    /**
599     * Start a block quote
600     */
601    public function quote_open() {
602        $this->doc .= '<blockquote><div class="no">'.DOKU_LF;
603    }
604
605    /**
606     * Stop a block quote
607     */
608    public function quote_close() {
609        $this->doc .= '</div></blockquote>'.DOKU_LF;
610    }
611
612    /**
613     * Output preformatted text
614     *
615     * @param string $text
616     */
617    public function preformatted($text) {
618        $this->doc .= '<pre class="code">'.trim($this->_xmlEntities($text), "\n\r").'</pre>'.DOKU_LF;
619    }
620
621    /**
622     * Display text as file content, optionally syntax highlighted
623     *
624     * @param string $text     text to show
625     * @param string $language programming language to use for syntax highlighting
626     * @param string $filename file path label
627     * @param array  $options  assoziative array with additional geshi options
628     */
629    public function file($text, $language = null, $filename = null, $options=null) {
630        $this->_highlight('file', $text, $language, $filename, $options);
631    }
632
633    /**
634     * Display text as code content, optionally syntax highlighted
635     *
636     * @param string $text     text to show
637     * @param string $language programming language to use for syntax highlighting
638     * @param string $filename file path label
639     * @param array  $options  assoziative array with additional geshi options
640     */
641    public function code($text, $language = null, $filename = null, $options=null) {
642        $this->_highlight('code', $text, $language, $filename, $options);
643    }
644
645    /**
646     * Use GeSHi to highlight language syntax in code and file blocks
647     *
648     * @author Andreas Gohr <andi@splitbrain.org>
649     * @param string $type     code|file
650     * @param string $text     text to show
651     * @param string $language programming language to use for syntax highlighting
652     * @param string $filename file path label
653     * @param array  $options  assoziative array with additional geshi options
654     */
655    public function _highlight($type, $text, $language = null, $filename = null, $options = null) {
656        global $ID;
657        global $lang;
658        global $INPUT;
659
660        $language = preg_replace(PREG_PATTERN_VALID_LANGUAGE, '', $language);
661
662        if($filename) {
663            // add icon
664            list($ext) = mimetype($filename, false);
665            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
666            $class = 'mediafile mf_'.$class;
667
668            $offset = 0;
669            if ($INPUT->has('codeblockOffset')) {
670                $offset = $INPUT->str('codeblockOffset');
671            }
672            $this->doc .= '<dl class="'.$type.'">'.DOKU_LF;
673            $this->doc .= '<dt><a href="' .
674                exportlink(
675                    $ID,
676                    'code',
677                    array('codeblock' => $offset + $this->_codeblock)
678                ) . '" title="' . $lang['download'] . '" class="' . $class . '">';
679            $this->doc .= hsc($filename);
680            $this->doc .= '</a></dt>'.DOKU_LF.'<dd>';
681        }
682
683        if($text[0] == "\n") {
684            $text = substr($text, 1);
685        }
686        if(substr($text, -1) == "\n") {
687            $text = substr($text, 0, -1);
688        }
689
690        if(empty($language)) { // empty is faster than is_null and can prevent '' string
691            $this->doc .= '<pre class="'.$type.'">'.$this->_xmlEntities($text).'</pre>'.DOKU_LF;
692        } else {
693            $class = 'code'; //we always need the code class to make the syntax highlighting apply
694            if($type != 'code') $class .= ' '.$type;
695
696            $this->doc .= "<pre class=\"$class $language\">" .
697                p_xhtml_cached_geshi($text, $language, '', $options) .
698                '</pre>' . DOKU_LF;
699        }
700
701        if($filename) {
702            $this->doc .= '</dd></dl>'.DOKU_LF;
703        }
704
705        $this->_codeblock++;
706    }
707
708    /**
709     * Format an acronym
710     *
711     * Uses $this->acronyms
712     *
713     * @param string $acronym
714     */
715    public function acronym($acronym) {
716
717        if(array_key_exists($acronym, $this->acronyms)) {
718
719            $title = $this->_xmlEntities($this->acronyms[$acronym]);
720
721            $this->doc .= '<abbr title="'.$title
722                .'">'.$this->_xmlEntities($acronym).'</abbr>';
723
724        } else {
725            $this->doc .= $this->_xmlEntities($acronym);
726        }
727    }
728
729    /**
730     * Format a smiley
731     *
732     * Uses $this->smiley
733     *
734     * @param string $smiley
735     */
736    public function smiley($smiley) {
737        if(array_key_exists($smiley, $this->smileys)) {
738            $this->doc .= '<img src="'.DOKU_BASE.'lib/images/smileys/'.$this->smileys[$smiley].
739                '" class="icon" alt="'.
740                $this->_xmlEntities($smiley).'" />';
741        } else {
742            $this->doc .= $this->_xmlEntities($smiley);
743        }
744    }
745
746    /**
747     * Format an entity
748     *
749     * Entities are basically small text replacements
750     *
751     * Uses $this->entities
752     *
753     * @param string $entity
754     */
755    public function entity($entity) {
756        if(array_key_exists($entity, $this->entities)) {
757            $this->doc .= $this->entities[$entity];
758        } else {
759            $this->doc .= $this->_xmlEntities($entity);
760        }
761    }
762
763    /**
764     * Typographically format a multiply sign
765     *
766     * Example: ($x=640, $y=480) should result in "640×480"
767     *
768     * @param string|int $x first value
769     * @param string|int $y second value
770     */
771    public function multiplyentity($x, $y) {
772        $this->doc .= "$x&times;$y";
773    }
774
775    /**
776     * Render an opening single quote char (language specific)
777     */
778    public function singlequoteopening() {
779        global $lang;
780        $this->doc .= $lang['singlequoteopening'];
781    }
782
783    /**
784     * Render a closing single quote char (language specific)
785     */
786    public function singlequoteclosing() {
787        global $lang;
788        $this->doc .= $lang['singlequoteclosing'];
789    }
790
791    /**
792     * Render an apostrophe char (language specific)
793     */
794    public function apostrophe() {
795        global $lang;
796        $this->doc .= $lang['apostrophe'];
797    }
798
799    /**
800     * Render an opening double quote char (language specific)
801     */
802    public function doublequoteopening() {
803        global $lang;
804        $this->doc .= $lang['doublequoteopening'];
805    }
806
807    /**
808     * Render an closinging double quote char (language specific)
809     */
810    public function doublequoteclosing() {
811        global $lang;
812        $this->doc .= $lang['doublequoteclosing'];
813    }
814
815    /**
816     * Render a CamelCase link
817     *
818     * @param string $link       The link name
819     * @param bool   $returnonly whether to return html or write to doc attribute
820     * @return void|string writes to doc attribute or returns html depends on $returnonly
821     *
822     * @see http://en.wikipedia.org/wiki/CamelCase
823     */
824    public function camelcaselink($link, $returnonly = false) {
825        if($returnonly) {
826          return $this->internallink($link, $link, null, true);
827        } else {
828          $this->internallink($link, $link);
829        }
830    }
831
832    /**
833     * Render a page local link
834     *
835     * @param string $hash       hash link identifier
836     * @param string $name       name for the link
837     * @param bool   $returnonly whether to return html or write to doc attribute
838     * @return void|string writes to doc attribute or returns html depends on $returnonly
839     */
840    public function locallink($hash, $name = null, $returnonly = false) {
841        global $ID;
842        $name  = $this->_getLinkTitle($name, $hash, $isImage);
843        $hash  = $this->_headerToLink($hash);
844        $title = $ID.' ↵';
845
846        $doc = '<a href="#'.$hash.'" title="'.$title.'" class="wikilink1">';
847        $doc .= $name;
848        $doc .= '</a>';
849
850        if($returnonly) {
851          return $doc;
852        } else {
853          $this->doc .= $doc;
854        }
855    }
856
857    /**
858     * Render an internal Wiki Link
859     *
860     * $search,$returnonly & $linktype are not for the renderer but are used
861     * elsewhere - no need to implement them in other renderers
862     *
863     * @author Andreas Gohr <andi@splitbrain.org>
864     * @param string      $id         pageid
865     * @param string|null $name       link name
866     * @param string|null $search     adds search url param
867     * @param bool        $returnonly whether to return html or write to doc attribute
868     * @param string      $linktype   type to set use of headings
869     * @return void|string writes to doc attribute or returns html depends on $returnonly
870     */
871    public function internallink($id, $name = null, $search = null, $returnonly = false, $linktype = 'content') {
872        global $conf;
873        global $ID;
874        global $INFO;
875
876        $params = '';
877        $parts  = explode('?', $id, 2);
878        if(count($parts) === 2) {
879            $id     = $parts[0];
880            $params = $parts[1];
881        }
882
883        // For empty $id we need to know the current $ID
884        // We need this check because _simpleTitle needs
885        // correct $id and resolve_pageid() use cleanID($id)
886        // (some things could be lost)
887        if($id === '') {
888            $id = $ID;
889        }
890
891        // default name is based on $id as given
892        $default = $this->_simpleTitle($id);
893
894        // now first resolve and clean up the $id
895        resolve_pageid(getNS($ID), $id, $exists, $this->date_at, true);
896
897        $link = array();
898        $name = $this->_getLinkTitle($name, $default, $isImage, $id, $linktype);
899        if(!$isImage) {
900            if($exists) {
901                $class = 'wikilink1';
902            } else {
903                $class       = 'wikilink2';
904                $link['rel'] = 'nofollow';
905            }
906        } else {
907            $class = 'media';
908        }
909
910        //keep hash anchor
911        @list($id, $hash) = explode('#', $id, 2);
912        if(!empty($hash)) $hash = $this->_headerToLink($hash);
913
914        //prepare for formating
915        $link['target'] = $conf['target']['wiki'];
916        $link['style']  = '';
917        $link['pre']    = '';
918        $link['suf']    = '';
919        $link['more']   = 'data-wiki-id="'.$id.'"'; // id is already cleaned
920        $link['class']  = $class;
921        if($this->date_at) {
922            $params = $params.'&at='.rawurlencode($this->date_at);
923        }
924        $link['url']    = wl($id, $params);
925        $link['name']   = $name;
926        $link['title']  = $id;
927        //add search string
928        if($search) {
929            ($conf['userewrite']) ? $link['url'] .= '?' : $link['url'] .= '&amp;';
930            if(is_array($search)) {
931                $search = array_map('rawurlencode', $search);
932                $link['url'] .= 's[]='.join('&amp;s[]=', $search);
933            } else {
934                $link['url'] .= 's='.rawurlencode($search);
935            }
936        }
937
938        //keep hash
939        if($hash) $link['url'] .= '#'.$hash;
940
941        //output formatted
942        if($returnonly) {
943            return $this->_formatLink($link);
944        } else {
945            $this->doc .= $this->_formatLink($link);
946        }
947    }
948
949    /**
950     * Render an external link
951     *
952     * @param string       $url        full URL with scheme
953     * @param string|array $name       name for the link, array for media file
954     * @param bool         $returnonly whether to return html or write to doc attribute
955     * @return void|string writes to doc attribute or returns html depends on $returnonly
956     */
957    public function externallink($url, $name = null, $returnonly = false) {
958        global $conf;
959
960        $name = $this->_getLinkTitle($name, $url, $isImage);
961
962        // url might be an attack vector, only allow registered protocols
963        if(is_null($this->schemes)) $this->schemes = getSchemes();
964        list($scheme) = explode('://', $url);
965        $scheme = strtolower($scheme);
966        if(!in_array($scheme, $this->schemes)) $url = '';
967
968        // is there still an URL?
969        if(!$url) {
970            if($returnonly) {
971                return $name;
972            } else {
973                $this->doc .= $name;
974            }
975            return;
976        }
977
978        // set class
979        if(!$isImage) {
980            $class = 'urlextern';
981        } else {
982            $class = 'media';
983        }
984
985        //prepare for formating
986        $link = array();
987        $link['target'] = $conf['target']['extern'];
988        $link['style']  = '';
989        $link['pre']    = '';
990        $link['suf']    = '';
991        $link['more']   = '';
992        $link['class']  = $class;
993        $link['url']    = $url;
994        $link['rel']    = '';
995
996        $link['name']  = $name;
997        $link['title'] = $this->_xmlEntities($url);
998        if($conf['relnofollow']) $link['rel'] .= ' ugc nofollow';
999        if($conf['target']['extern']) $link['rel'] .= ' noopener';
1000
1001        //output formatted
1002        if($returnonly) {
1003            return $this->_formatLink($link);
1004        } else {
1005            $this->doc .= $this->_formatLink($link);
1006        }
1007    }
1008
1009    /**
1010     * Render an interwiki link
1011     *
1012     * You may want to use $this->_resolveInterWiki() here
1013     *
1014     * @param string       $match      original link - probably not much use
1015     * @param string|array $name       name for the link, array for media file
1016     * @param string       $wikiName   indentifier (shortcut) for the remote wiki
1017     * @param string       $wikiUri    the fragment parsed from the original link
1018     * @param bool         $returnonly whether to return html or write to doc attribute
1019     * @return void|string writes to doc attribute or returns html depends on $returnonly
1020     */
1021    public function interwikilink($match, $name, $wikiName, $wikiUri, $returnonly = false) {
1022        global $conf;
1023
1024        $link           = array();
1025        $link['target'] = $conf['target']['interwiki'];
1026        $link['pre']    = '';
1027        $link['suf']    = '';
1028        $link['more']   = '';
1029        $link['name']   = $this->_getLinkTitle($name, $wikiUri, $isImage);
1030        $link['rel']    = '';
1031
1032        //get interwiki URL
1033        $exists = null;
1034        $url    = $this->_resolveInterWiki($wikiName, $wikiUri, $exists);
1035
1036        if(!$isImage) {
1037            $class         = preg_replace('/[^_\-a-z0-9]+/i', '_', $wikiName);
1038            $link['class'] = "interwiki iw_$class";
1039        } else {
1040            $link['class'] = 'media';
1041        }
1042
1043        //do we stay at the same server? Use local target
1044        if(strpos($url, DOKU_URL) === 0 OR strpos($url, DOKU_BASE) === 0) {
1045            $link['target'] = $conf['target']['wiki'];
1046        }
1047        if($exists !== null && !$isImage) {
1048            if($exists) {
1049                $link['class'] .= ' wikilink1';
1050            } else {
1051                $link['class'] .= ' wikilink2';
1052                $link['rel'] .= ' nofollow';
1053            }
1054        }
1055        if($conf['target']['interwiki']) $link['rel'] .= ' noopener';
1056
1057        $link['url']   = $url;
1058        $link['title'] = htmlspecialchars($link['url']);
1059
1060        // output formatted
1061        if($returnonly) {
1062            if($url == '') return $link['name'];
1063            return $this->_formatLink($link);
1064        } else {
1065            if($url == '') $this->doc .= $link['name'];
1066            else $this->doc .= $this->_formatLink($link);
1067        }
1068    }
1069
1070    /**
1071     * Link to windows share
1072     *
1073     * @param string       $url        the link
1074     * @param string|array $name       name for the link, array for media file
1075     * @param bool         $returnonly whether to return html or write to doc attribute
1076     * @return void|string writes to doc attribute or returns html depends on $returnonly
1077     */
1078    public function windowssharelink($url, $name = null, $returnonly = false) {
1079        global $conf;
1080
1081        //simple setup
1082        $link = array();
1083        $link['target'] = $conf['target']['windows'];
1084        $link['pre']    = '';
1085        $link['suf']    = '';
1086        $link['style']  = '';
1087
1088        $link['name'] = $this->_getLinkTitle($name, $url, $isImage);
1089        if(!$isImage) {
1090            $link['class'] = 'windows';
1091        } else {
1092            $link['class'] = 'media';
1093        }
1094
1095        $link['title'] = $this->_xmlEntities($url);
1096        $url           = str_replace('\\', '/', $url);
1097        $url           = 'file:///'.$url;
1098        $link['url']   = $url;
1099
1100        //output formatted
1101        if($returnonly) {
1102            return $this->_formatLink($link);
1103        } else {
1104            $this->doc .= $this->_formatLink($link);
1105        }
1106    }
1107
1108    /**
1109     * Render a linked E-Mail Address
1110     *
1111     * Honors $conf['mailguard'] setting
1112     *
1113     * @param string       $address    Email-Address
1114     * @param string|array $name       name for the link, array for media file
1115     * @param bool         $returnonly whether to return html or write to doc attribute
1116     * @return void|string writes to doc attribute or returns html depends on $returnonly
1117     */
1118    public function emaillink($address, $name = null, $returnonly = false) {
1119        global $conf;
1120        //simple setup
1121        $link           = array();
1122        $link['target'] = '';
1123        $link['pre']    = '';
1124        $link['suf']    = '';
1125        $link['style']  = '';
1126        $link['more']   = '';
1127
1128        $name = $this->_getLinkTitle($name, '', $isImage);
1129        if(!$isImage) {
1130            $link['class'] = 'mail';
1131        } else {
1132            $link['class'] = 'media';
1133        }
1134
1135        $address = $this->_xmlEntities($address);
1136        $address = obfuscate($address);
1137        $title   = $address;
1138
1139        if(empty($name)) {
1140            $name = $address;
1141        }
1142
1143        if($conf['mailguard'] == 'visible') $address = rawurlencode($address);
1144
1145        $link['url']   = 'mailto:'.$address;
1146        $link['name']  = $name;
1147        $link['title'] = $title;
1148
1149        //output formatted
1150        if($returnonly) {
1151            return $this->_formatLink($link);
1152        } else {
1153            $this->doc .= $this->_formatLink($link);
1154        }
1155    }
1156
1157    /**
1158     * Render an internal media file
1159     *
1160     * @param string $src       media ID
1161     * @param string $title     descriptive text
1162     * @param string $align     left|center|right
1163     * @param int    $width     width of media in pixel
1164     * @param int    $height    height of media in pixel
1165     * @param string $cache     cache|recache|nocache
1166     * @param string $linking   linkonly|detail|nolink
1167     * @param bool   $return    return HTML instead of adding to $doc
1168     * @return void|string writes to doc attribute or returns html depends on $return
1169     */
1170    public function internalmedia($src, $title = null, $align = null, $width = null,
1171                           $height = null, $cache = null, $linking = null, $return = false) {
1172        global $ID;
1173        if (strpos($src, '#') !== false) {
1174            list($src, $hash) = explode('#', $src, 2);
1175        }
1176        resolve_mediaid(getNS($ID), $src, $exists, $this->date_at, true);
1177
1178        $noLink = false;
1179        $render = ($linking == 'linkonly') ? false : true;
1180        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render);
1181
1182        list($ext, $mime) = mimetype($src, false);
1183        if(substr($mime, 0, 5) == 'image' && $render) {
1184            $link['url'] = ml(
1185                $src,
1186                array(
1187                    'id' => $ID,
1188                    'cache' => $cache,
1189                    'rev' => $this->_getLastMediaRevisionAt($src)
1190                ),
1191                ($linking == 'direct')
1192            );
1193        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
1194            // don't link movies
1195            $noLink = true;
1196        } else {
1197            // add file icons
1198            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
1199            $link['class'] .= ' mediafile mf_'.$class;
1200            $link['url'] = ml(
1201                $src,
1202                array(
1203                    'id' => $ID,
1204                    'cache' => $cache,
1205                    'rev' => $this->_getLastMediaRevisionAt($src)
1206                ),
1207                true
1208            );
1209            if($exists) $link['title'] .= ' ('.filesize_h(filesize(mediaFN($src))).')';
1210        }
1211
1212        if (!empty($hash)) $link['url'] .= '#'.$hash;
1213
1214        //markup non existing files
1215        if(!$exists) {
1216            $link['class'] .= ' wikilink2';
1217        }
1218
1219        //output formatted
1220        if($return) {
1221            if($linking == 'nolink' || $noLink) return $link['name'];
1222            else return $this->_formatLink($link);
1223        } else {
1224            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
1225            else $this->doc .= $this->_formatLink($link);
1226        }
1227    }
1228
1229    /**
1230     * Render an external media file
1231     *
1232     * @param string $src     full media URL
1233     * @param string $title   descriptive text
1234     * @param string $align   left|center|right
1235     * @param int    $width   width of media in pixel
1236     * @param int    $height  height of media in pixel
1237     * @param string $cache   cache|recache|nocache
1238     * @param string $linking linkonly|detail|nolink
1239     * @param bool   $return  return HTML instead of adding to $doc
1240     * @return void|string writes to doc attribute or returns html depends on $return
1241     */
1242    public function externalmedia($src, $title = null, $align = null, $width = null,
1243                           $height = null, $cache = null, $linking = null, $return = false) {
1244        if(link_isinterwiki($src)){
1245            list($shortcut, $reference) = explode('>', $src, 2);
1246            $exists = null;
1247            $src = $this->_resolveInterWiki($shortcut, $reference, $exists);
1248            if($src == '' && empty($title)){
1249                // make sure at least something will be shown in this case
1250                $title = $reference;
1251            }
1252        }
1253        list($src, $hash) = explode('#', $src, 2);
1254        $noLink = false;
1255        if($src == '') {
1256            // only output plaintext without link if there is no src
1257            $noLink = true;
1258        }
1259        $render = ($linking == 'linkonly') ? false : true;
1260        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render);
1261
1262        $link['url'] = ml($src, array('cache' => $cache));
1263
1264        list($ext, $mime) = mimetype($src, false);
1265        if(substr($mime, 0, 5) == 'image' && $render) {
1266            // link only jpeg images
1267            // if ($ext != 'jpg' && $ext != 'jpeg') $noLink = true;
1268        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
1269            // don't link movies
1270            $noLink = true;
1271        } else {
1272            // add file icons
1273            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
1274            $link['class'] .= ' mediafile mf_'.$class;
1275        }
1276
1277        if($hash) $link['url'] .= '#'.$hash;
1278
1279        //output formatted
1280        if($return) {
1281            if($linking == 'nolink' || $noLink) return $link['name'];
1282            else return $this->_formatLink($link);
1283        } else {
1284            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
1285            else $this->doc .= $this->_formatLink($link);
1286        }
1287    }
1288
1289    /**
1290     * Renders an RSS feed
1291     *
1292     * @param string $url    URL of the feed
1293     * @param array  $params Finetuning of the output
1294     *
1295     * @author Andreas Gohr <andi@splitbrain.org>
1296     */
1297    public function rss($url, $params) {
1298        global $lang;
1299        global $conf;
1300
1301        require_once(DOKU_INC.'inc/FeedParser.php');
1302        $feed = new FeedParser();
1303        $feed->set_feed_url($url);
1304
1305        //disable warning while fetching
1306        if(!defined('DOKU_E_LEVEL')) {
1307            $elvl = error_reporting(E_ERROR);
1308        }
1309        $rc = $feed->init();
1310        if(isset($elvl)) {
1311            error_reporting($elvl);
1312        }
1313
1314        if($params['nosort']) $feed->enable_order_by_date(false);
1315
1316        //decide on start and end
1317        if($params['reverse']) {
1318            $mod   = -1;
1319            $start = $feed->get_item_quantity() - 1;
1320            $end   = $start - ($params['max']);
1321            $end   = ($end < -1) ? -1 : $end;
1322        } else {
1323            $mod   = 1;
1324            $start = 0;
1325            $end   = $feed->get_item_quantity();
1326            $end   = ($end > $params['max']) ? $params['max'] : $end;
1327        }
1328
1329        $this->doc .= '<ul class="rss">';
1330        if($rc) {
1331            for($x = $start; $x != $end; $x += $mod) {
1332                $item = $feed->get_item($x);
1333                $this->doc .= '<li><div class="li">';
1334                // support feeds without links
1335                $lnkurl = $item->get_permalink();
1336                if($lnkurl) {
1337                    // title is escaped by SimplePie, we unescape here because it
1338                    // is escaped again in externallink() FS#1705
1339                    $this->externallink(
1340                        $item->get_permalink(),
1341                        html_entity_decode($item->get_title(), ENT_QUOTES, 'UTF-8')
1342                    );
1343                } else {
1344                    $this->doc .= ' '.$item->get_title();
1345                }
1346                if($params['author']) {
1347                    $author = $item->get_author(0);
1348                    if($author) {
1349                        $name = $author->get_name();
1350                        if(!$name) $name = $author->get_email();
1351                        if($name) $this->doc .= ' '.$lang['by'].' '.hsc($name);
1352                    }
1353                }
1354                if($params['date']) {
1355                    $this->doc .= ' ('.$item->get_local_date($conf['dformat']).')';
1356                }
1357                if($params['details']) {
1358                    $this->doc .= '<div class="detail">';
1359                    if($conf['htmlok']) {
1360                        $this->doc .= $item->get_description();
1361                    } else {
1362                        $this->doc .= strip_tags($item->get_description());
1363                    }
1364                    $this->doc .= '</div>';
1365                }
1366
1367                $this->doc .= '</div></li>';
1368            }
1369        } else {
1370            $this->doc .= '<li><div class="li">';
1371            $this->doc .= '<em>'.$lang['rssfailed'].'</em>';
1372            $this->externallink($url);
1373            if($conf['allowdebug']) {
1374                $this->doc .= '<!--'.hsc($feed->error).'-->';
1375            }
1376            $this->doc .= '</div></li>';
1377        }
1378        $this->doc .= '</ul>';
1379    }
1380
1381    /**
1382     * Start a table
1383     *
1384     * @param int $maxcols maximum number of columns
1385     * @param int $numrows NOT IMPLEMENTED
1386     * @param int $pos byte position in the original source
1387     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1388     */
1389    public function table_open($maxcols = null, $numrows = null, $pos = null, $classes = null) {
1390        // initialize the row counter used for classes
1391        $this->_counter['row_counter'] = 0;
1392        $class                         = 'table';
1393        if($classes !== null) {
1394            if(is_array($classes)) $classes = join(' ', $classes);
1395            $class .= ' ' . $classes;
1396        }
1397        if($pos !== null) {
1398            $hid = $this->_headerToLink($class, true);
1399            $data = array();
1400            $data['target'] = 'table';
1401            $data['name'] = '';
1402            $data['hid'] = $hid;
1403            $class .= ' '.$this->startSectionEdit($pos, $data);
1404        }
1405        $this->doc .= '<div class="'.$class.'"><table class="inline">'.
1406            DOKU_LF;
1407    }
1408
1409    /**
1410     * Close a table
1411     *
1412     * @param int $pos byte position in the original source
1413     */
1414    public function table_close($pos = null) {
1415        $this->doc .= '</table></div>'.DOKU_LF;
1416        if($pos !== null) {
1417            $this->finishSectionEdit($pos);
1418        }
1419    }
1420
1421    /**
1422     * Open a table header
1423     */
1424    public function tablethead_open() {
1425        $this->doc .= DOKU_TAB.'<thead>'.DOKU_LF;
1426    }
1427
1428    /**
1429     * Close a table header
1430     */
1431    public function tablethead_close() {
1432        $this->doc .= DOKU_TAB.'</thead>'.DOKU_LF;
1433    }
1434
1435    /**
1436     * Open a table body
1437     */
1438    public function tabletbody_open() {
1439        $this->doc .= DOKU_TAB.'<tbody>'.DOKU_LF;
1440    }
1441
1442    /**
1443     * Close a table body
1444     */
1445    public function tabletbody_close() {
1446        $this->doc .= DOKU_TAB.'</tbody>'.DOKU_LF;
1447    }
1448
1449    /**
1450     * Open a table footer
1451     */
1452    public function tabletfoot_open() {
1453        $this->doc .= DOKU_TAB.'<tfoot>'.DOKU_LF;
1454    }
1455
1456    /**
1457     * Close a table footer
1458     */
1459    public function tabletfoot_close() {
1460        $this->doc .= DOKU_TAB.'</tfoot>'.DOKU_LF;
1461    }
1462
1463    /**
1464     * Open a table row
1465     *
1466     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1467     */
1468    public function tablerow_open($classes = null) {
1469        // initialize the cell counter used for classes
1470        $this->_counter['cell_counter'] = 0;
1471        $class                          = 'row'.$this->_counter['row_counter']++;
1472        if($classes !== null) {
1473            if(is_array($classes)) $classes = join(' ', $classes);
1474            $class .= ' ' . $classes;
1475        }
1476        $this->doc .= DOKU_TAB.'<tr class="'.$class.'">'.DOKU_LF.DOKU_TAB.DOKU_TAB;
1477    }
1478
1479    /**
1480     * Close a table row
1481     */
1482    public function tablerow_close() {
1483        $this->doc .= DOKU_LF.DOKU_TAB.'</tr>'.DOKU_LF;
1484    }
1485
1486    /**
1487     * Open a table header cell
1488     *
1489     * @param int    $colspan
1490     * @param string $align left|center|right
1491     * @param int    $rowspan
1492     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1493     */
1494    public function tableheader_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
1495        $class = 'class="col'.$this->_counter['cell_counter']++;
1496        if(!is_null($align)) {
1497            $class .= ' '.$align.'align';
1498        }
1499        if($classes !== null) {
1500            if(is_array($classes)) $classes = join(' ', $classes);
1501            $class .= ' ' . $classes;
1502        }
1503        $class .= '"';
1504        $this->doc .= '<th '.$class;
1505        if($colspan > 1) {
1506            $this->_counter['cell_counter'] += $colspan - 1;
1507            $this->doc .= ' colspan="'.$colspan.'"';
1508        }
1509        if($rowspan > 1) {
1510            $this->doc .= ' rowspan="'.$rowspan.'"';
1511        }
1512        $this->doc .= '>';
1513    }
1514
1515    /**
1516     * Close a table header cell
1517     */
1518    public function tableheader_close() {
1519        $this->doc .= '</th>';
1520    }
1521
1522    /**
1523     * Open a table cell
1524     *
1525     * @param int       $colspan
1526     * @param string    $align left|center|right
1527     * @param int       $rowspan
1528     * @param string|string[]    $classes css classes - have to be valid, do not pass unfiltered user input
1529     */
1530    public function tablecell_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
1531        $class = 'class="col'.$this->_counter['cell_counter']++;
1532        if(!is_null($align)) {
1533            $class .= ' '.$align.'align';
1534        }
1535        if($classes !== null) {
1536            if(is_array($classes)) $classes = join(' ', $classes);
1537            $class .= ' ' . $classes;
1538        }
1539        $class .= '"';
1540        $this->doc .= '<td '.$class;
1541        if($colspan > 1) {
1542            $this->_counter['cell_counter'] += $colspan - 1;
1543            $this->doc .= ' colspan="'.$colspan.'"';
1544        }
1545        if($rowspan > 1) {
1546            $this->doc .= ' rowspan="'.$rowspan.'"';
1547        }
1548        $this->doc .= '>';
1549    }
1550
1551    /**
1552     * Close a table cell
1553     */
1554    public function tablecell_close() {
1555        $this->doc .= '</td>';
1556    }
1557
1558    /**
1559     * Returns the current header level.
1560     * (required e.g. by the filelist plugin)
1561     *
1562     * @return int The current header level
1563     */
1564    public function getLastlevel() {
1565        return $this->lastlevel;
1566    }
1567
1568    #region Utility functions
1569
1570    /**
1571     * Build a link
1572     *
1573     * Assembles all parts defined in $link returns HTML for the link
1574     *
1575     * @param array $link attributes of a link
1576     * @return string
1577     *
1578     * @author Andreas Gohr <andi@splitbrain.org>
1579     */
1580    public function _formatLink($link) {
1581        //make sure the url is XHTML compliant (skip mailto)
1582        if(substr($link['url'], 0, 7) != 'mailto:') {
1583            $link['url'] = str_replace('&', '&amp;', $link['url']);
1584            $link['url'] = str_replace('&amp;amp;', '&amp;', $link['url']);
1585        }
1586        //remove double encodings in titles
1587        $link['title'] = str_replace('&amp;amp;', '&amp;', $link['title']);
1588
1589        // be sure there are no bad chars in url or title
1590        // (we can't do this for name because it can contain an img tag)
1591        $link['url']   = strtr($link['url'], array('>' => '%3E', '<' => '%3C', '"' => '%22'));
1592        $link['title'] = strtr($link['title'], array('>' => '&gt;', '<' => '&lt;', '"' => '&quot;'));
1593
1594        $ret = '';
1595        $ret .= $link['pre'];
1596        $ret .= '<a href="'.$link['url'].'"';
1597        if(!empty($link['class'])) $ret .= ' class="'.$link['class'].'"';
1598        if(!empty($link['target'])) $ret .= ' target="'.$link['target'].'"';
1599        if(!empty($link['title'])) $ret .= ' title="'.$link['title'].'"';
1600        if(!empty($link['style'])) $ret .= ' style="'.$link['style'].'"';
1601        if(!empty($link['rel'])) $ret .= ' rel="'.trim($link['rel']).'"';
1602        if(!empty($link['more'])) $ret .= ' '.$link['more'];
1603        $ret .= '>';
1604        $ret .= $link['name'];
1605        $ret .= '</a>';
1606        $ret .= $link['suf'];
1607        return $ret;
1608    }
1609
1610    /**
1611     * Renders internal and external media
1612     *
1613     * @author Andreas Gohr <andi@splitbrain.org>
1614     * @param string $src       media ID
1615     * @param string $title     descriptive text
1616     * @param string $align     left|center|right
1617     * @param int    $width     width of media in pixel
1618     * @param int    $height    height of media in pixel
1619     * @param string $cache     cache|recache|nocache
1620     * @param bool   $render    should the media be embedded inline or just linked
1621     * @return string
1622     */
1623    public function _media($src, $title = null, $align = null, $width = null,
1624                    $height = null, $cache = null, $render = true) {
1625
1626        $ret = '';
1627
1628        list($ext, $mime) = mimetype($src);
1629        if(substr($mime, 0, 5) == 'image') {
1630            // first get the $title
1631            if(!is_null($title)) {
1632                $title = $this->_xmlEntities($title);
1633            } elseif($ext == 'jpg' || $ext == 'jpeg') {
1634                //try to use the caption from IPTC/EXIF
1635                require_once(DOKU_INC.'inc/JpegMeta.php');
1636                $jpeg = new JpegMeta(mediaFN($src));
1637                if($jpeg !== false) $cap = $jpeg->getTitle();
1638                if(!empty($cap)) {
1639                    $title = $this->_xmlEntities($cap);
1640                }
1641            }
1642            if(!$render) {
1643                // if the picture is not supposed to be rendered
1644                // return the title of the picture
1645                if($title === null || $title === "") {
1646                    // just show the sourcename
1647                    $title = $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($src)));
1648                }
1649                return $title;
1650            }
1651            //add image tag
1652            $ret .= '<img src="' . ml(
1653                    $src,
1654                    array(
1655                        'w' => $width, 'h' => $height,
1656                        'cache' => $cache,
1657                        'rev' => $this->_getLastMediaRevisionAt($src)
1658                    )
1659                ) . '"';
1660            $ret .= ' class="media'.$align.'"';
1661
1662            if($title) {
1663                $ret .= ' title="'.$title.'"';
1664                $ret .= ' alt="'.$title.'"';
1665            } else {
1666                $ret .= ' alt=""';
1667            }
1668
1669            if(!is_null($width))
1670                $ret .= ' width="'.$this->_xmlEntities($width).'"';
1671
1672            if(!is_null($height))
1673                $ret .= ' height="'.$this->_xmlEntities($height).'"';
1674
1675            $ret .= ' />';
1676
1677        } elseif(media_supportedav($mime, 'video') || media_supportedav($mime, 'audio')) {
1678            // first get the $title
1679            $title = !is_null($title) ? $title : false;
1680            if(!$render) {
1681                // if the file is not supposed to be rendered
1682                // return the title of the file (just the sourcename if there is no title)
1683                return $this->_xmlEntities($title ? $title : \dokuwiki\Utf8\PhpString::basename(noNS($src)));
1684            }
1685
1686            $att          = array();
1687            $att['class'] = "media$align";
1688            if($title) {
1689                $att['title'] = $title;
1690            }
1691
1692            if(media_supportedav($mime, 'video')) {
1693                //add video
1694                $ret .= $this->_video($src, $width, $height, $att);
1695            }
1696            if(media_supportedav($mime, 'audio')) {
1697                //add audio
1698                $ret .= $this->_audio($src, $att);
1699            }
1700
1701        } elseif($mime == 'application/x-shockwave-flash') {
1702            if(!$render) {
1703                // if the flash is not supposed to be rendered
1704                // return the title of the flash
1705                if(!$title) {
1706                    // just show the sourcename
1707                    $title = \dokuwiki\Utf8\PhpString::basename(noNS($src));
1708                }
1709                return $this->_xmlEntities($title);
1710            }
1711
1712            $att          = array();
1713            $att['class'] = "media$align";
1714            if($align == 'right') $att['align'] = 'right';
1715            if($align == 'left') $att['align'] = 'left';
1716            $ret .= html_flashobject(
1717                ml($src, array('cache' => $cache), true, '&'), $width, $height,
1718                array('quality' => 'high'),
1719                null,
1720                $att,
1721                $this->_xmlEntities($title)
1722            );
1723        } elseif($title) {
1724            // well at least we have a title to display
1725            $ret .= $this->_xmlEntities($title);
1726        } else {
1727            // just show the sourcename
1728            $ret .= $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($src)));
1729        }
1730
1731        return $ret;
1732    }
1733
1734    /**
1735     * Escape string for output
1736     *
1737     * @param $string
1738     * @return string
1739     */
1740    public function _xmlEntities($string) {
1741        return htmlspecialchars($string, ENT_QUOTES, 'UTF-8');
1742    }
1743
1744
1745
1746    /**
1747     * Construct a title and handle images in titles
1748     *
1749     * @author Harry Fuecks <hfuecks@gmail.com>
1750     * @param string|array $title    either string title or media array
1751     * @param string       $default  default title if nothing else is found
1752     * @param bool         $isImage  will be set to true if it's a media file
1753     * @param null|string  $id       linked page id (used to extract title from first heading)
1754     * @param string       $linktype content|navigation
1755     * @return string      HTML of the title, might be full image tag or just escaped text
1756     */
1757    public function _getLinkTitle($title, $default, &$isImage, $id = null, $linktype = 'content') {
1758        $isImage = false;
1759        if(is_array($title)) {
1760            $isImage = true;
1761            return $this->_imageTitle($title);
1762        } elseif(is_null($title) || trim($title) == '') {
1763            if(useHeading($linktype) && $id) {
1764                $heading = p_get_first_heading($id);
1765                if(!blank($heading)) {
1766                    return $this->_xmlEntities($heading);
1767                }
1768            }
1769            return $this->_xmlEntities($default);
1770        } else {
1771            return $this->_xmlEntities($title);
1772        }
1773    }
1774
1775    /**
1776     * Returns HTML code for images used in link titles
1777     *
1778     * @author Andreas Gohr <andi@splitbrain.org>
1779     * @param array $img
1780     * @return string HTML img tag or similar
1781     */
1782    public function _imageTitle($img) {
1783        global $ID;
1784
1785        // some fixes on $img['src']
1786        // see internalmedia() and externalmedia()
1787        list($img['src']) = explode('#', $img['src'], 2);
1788        if($img['type'] == 'internalmedia') {
1789            resolve_mediaid(getNS($ID), $img['src'], $exists ,$this->date_at, true);
1790        }
1791
1792        return $this->_media(
1793            $img['src'],
1794            $img['title'],
1795            $img['align'],
1796            $img['width'],
1797            $img['height'],
1798            $img['cache']
1799        );
1800    }
1801
1802    /**
1803     * helperfunction to return a basic link to a media
1804     *
1805     * used in internalmedia() and externalmedia()
1806     *
1807     * @author   Pierre Spring <pierre.spring@liip.ch>
1808     * @param string $src       media ID
1809     * @param string $title     descriptive text
1810     * @param string $align     left|center|right
1811     * @param int    $width     width of media in pixel
1812     * @param int    $height    height of media in pixel
1813     * @param string $cache     cache|recache|nocache
1814     * @param bool   $render    should the media be embedded inline or just linked
1815     * @return array associative array with link config
1816     */
1817    public function _getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render) {
1818        global $conf;
1819
1820        $link           = array();
1821        $link['class']  = 'media';
1822        $link['style']  = '';
1823        $link['pre']    = '';
1824        $link['suf']    = '';
1825        $link['more']   = '';
1826        $link['target'] = $conf['target']['media'];
1827        if($conf['target']['media']) $link['rel'] = 'noopener';
1828        $link['title']  = $this->_xmlEntities($src);
1829        $link['name']   = $this->_media($src, $title, $align, $width, $height, $cache, $render);
1830
1831        return $link;
1832    }
1833
1834    /**
1835     * Embed video(s) in HTML
1836     *
1837     * @author Anika Henke <anika@selfthinker.org>
1838     * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
1839     *
1840     * @param string $src         - ID of video to embed
1841     * @param int    $width       - width of the video in pixels
1842     * @param int    $height      - height of the video in pixels
1843     * @param array  $atts        - additional attributes for the <video> tag
1844     * @return string
1845     */
1846    public function _video($src, $width, $height, $atts = null) {
1847        // prepare width and height
1848        if(is_null($atts)) $atts = array();
1849        $atts['width']  = (int) $width;
1850        $atts['height'] = (int) $height;
1851        if(!$atts['width']) $atts['width'] = 320;
1852        if(!$atts['height']) $atts['height'] = 240;
1853
1854        $posterUrl = '';
1855        $files = array();
1856        $tracks = array();
1857        $isExternal = media_isexternal($src);
1858
1859        if ($isExternal) {
1860            // take direct source for external files
1861            list(/*ext*/, $srcMime) = mimetype($src);
1862            $files[$srcMime] = $src;
1863        } else {
1864            // prepare alternative formats
1865            $extensions   = array('webm', 'ogv', 'mp4');
1866            $files        = media_alternativefiles($src, $extensions);
1867            $poster       = media_alternativefiles($src, array('jpg', 'png'));
1868            $tracks       = media_trackfiles($src);
1869            if(!empty($poster)) {
1870                $posterUrl = ml(reset($poster), '', true, '&');
1871            }
1872        }
1873
1874        $out = '';
1875        // open video tag
1876        $out .= '<video '.buildAttributes($atts).' controls="controls"';
1877        if($posterUrl) $out .= ' poster="'.hsc($posterUrl).'"';
1878        $out .= '>'.NL;
1879        $fallback = '';
1880
1881        // output source for each alternative video format
1882        foreach($files as $mime => $file) {
1883            if ($isExternal) {
1884                $url = $file;
1885                $linkType = 'externalmedia';
1886            } else {
1887                $url = ml($file, '', true, '&');
1888                $linkType = 'internalmedia';
1889            }
1890            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($file)));
1891
1892            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
1893            // alternative content (just a link to the file)
1894            $fallback .= $this->$linkType(
1895                $file,
1896                $title,
1897                null,
1898                null,
1899                null,
1900                $cache = null,
1901                $linking = 'linkonly',
1902                $return = true
1903            );
1904        }
1905
1906        // output each track if any
1907        foreach( $tracks as $trackid => $info ) {
1908            list( $kind, $srclang ) = array_map( 'hsc', $info );
1909            $out .= "<track kind=\"$kind\" srclang=\"$srclang\" ";
1910            $out .= "label=\"$srclang\" ";
1911            $out .= 'src="'.ml($trackid, '', true).'">'.NL;
1912        }
1913
1914        // finish
1915        $out .= $fallback;
1916        $out .= '</video>'.NL;
1917        return $out;
1918    }
1919
1920    /**
1921     * Embed audio in HTML
1922     *
1923     * @author Anika Henke <anika@selfthinker.org>
1924     *
1925     * @param string $src       - ID of audio to embed
1926     * @param array  $atts      - additional attributes for the <audio> tag
1927     * @return string
1928     */
1929    public function _audio($src, $atts = array()) {
1930        $files = array();
1931        $isExternal = media_isexternal($src);
1932
1933        if ($isExternal) {
1934            // take direct source for external files
1935            list(/*ext*/, $srcMime) = mimetype($src);
1936            $files[$srcMime] = $src;
1937        } else {
1938            // prepare alternative formats
1939            $extensions   = array('ogg', 'mp3', 'wav');
1940            $files        = media_alternativefiles($src, $extensions);
1941        }
1942
1943        $out = '';
1944        // open audio tag
1945        $out .= '<audio '.buildAttributes($atts).' controls="controls">'.NL;
1946        $fallback = '';
1947
1948        // output source for each alternative audio format
1949        foreach($files as $mime => $file) {
1950            if ($isExternal) {
1951                $url = $file;
1952                $linkType = 'externalmedia';
1953            } else {
1954                $url = ml($file, '', true, '&');
1955                $linkType = 'internalmedia';
1956            }
1957            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($file)));
1958
1959            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
1960            // alternative content (just a link to the file)
1961            $fallback .= $this->$linkType(
1962                $file,
1963                $title,
1964                null,
1965                null,
1966                null,
1967                $cache = null,
1968                $linking = 'linkonly',
1969                $return = true
1970            );
1971        }
1972
1973        // finish
1974        $out .= $fallback;
1975        $out .= '</audio>'.NL;
1976        return $out;
1977    }
1978
1979    /**
1980     * _getLastMediaRevisionAt is a helperfunction to internalmedia() and _media()
1981     * which returns an existing media revision less or equal to rev or date_at
1982     *
1983     * @author lisps
1984     * @param string $media_id
1985     * @access protected
1986     * @return string revision ('' for current)
1987     */
1988    protected function _getLastMediaRevisionAt($media_id){
1989        if(!$this->date_at || media_isexternal($media_id)) return '';
1990        $pagelog = new MediaChangeLog($media_id);
1991        return $pagelog->getLastRevisionAt($this->date_at);
1992    }
1993
1994    #endregion
1995}
1996
1997//Setup VIM: ex: et ts=4 :
1998