xref: /dokuwiki/inc/parser/xhtml.php (revision 256ac28f4fc061dc35155f13d1f6d174278a204e)
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        $link['suf']    = '';
919        // highlight link to current page
920        if(isset($INFO) && $id == $INFO['id']) {
921            $link['pre'] = '<span class="curid">';
922            $link['suf'] = '</span>';
923        }
924        $link['more']   = '';
925        $link['class']  = $class;
926        if($this->date_at) {
927            $params = $params.'&at='.rawurlencode($this->date_at);
928        }
929        $link['url']    = wl($id, $params);
930        $link['name']   = $name;
931        $link['title']  = $id;
932        //add search string
933        if($search) {
934            ($conf['userewrite']) ? $link['url'] .= '?' : $link['url'] .= '&amp;';
935            if(is_array($search)) {
936                $search = array_map('rawurlencode', $search);
937                $link['url'] .= 's[]='.join('&amp;s[]=', $search);
938            } else {
939                $link['url'] .= 's='.rawurlencode($search);
940            }
941        }
942
943        //keep hash
944        if($hash) $link['url'] .= '#'.$hash;
945
946        //output formatted
947        if($returnonly) {
948            return $this->_formatLink($link);
949        } else {
950            $this->doc .= $this->_formatLink($link);
951        }
952    }
953
954    /**
955     * Render an external link
956     *
957     * @param string       $url        full URL with scheme
958     * @param string|array $name       name for the link, array for media file
959     * @param bool         $returnonly whether to return html or write to doc attribute
960     * @return void|string writes to doc attribute or returns html depends on $returnonly
961     */
962    public function externallink($url, $name = null, $returnonly = false) {
963        global $conf;
964
965        $name = $this->_getLinkTitle($name, $url, $isImage);
966
967        // url might be an attack vector, only allow registered protocols
968        if(is_null($this->schemes)) $this->schemes = getSchemes();
969        list($scheme) = explode('://', $url);
970        $scheme = strtolower($scheme);
971        if(!in_array($scheme, $this->schemes)) $url = '';
972
973        // is there still an URL?
974        if(!$url) {
975            if($returnonly) {
976                return $name;
977            } else {
978                $this->doc .= $name;
979            }
980            return;
981        }
982
983        // set class
984        if(!$isImage) {
985            $class = 'urlextern';
986        } else {
987            $class = 'media';
988        }
989
990        //prepare for formating
991        $link = array();
992        $link['target'] = $conf['target']['extern'];
993        $link['style']  = '';
994        $link['pre']    = '';
995        $link['suf']    = '';
996        $link['more']   = '';
997        $link['class']  = $class;
998        $link['url']    = $url;
999        $link['rel']    = '';
1000
1001        $link['name']  = $name;
1002        $link['title'] = $this->_xmlEntities($url);
1003        if($conf['relnofollow']) $link['rel'] .= ' ugc nofollow';
1004        if($conf['target']['extern']) $link['rel'] .= ' noopener';
1005
1006        //output formatted
1007        if($returnonly) {
1008            return $this->_formatLink($link);
1009        } else {
1010            $this->doc .= $this->_formatLink($link);
1011        }
1012    }
1013
1014    /**
1015     * Render an interwiki link
1016     *
1017     * You may want to use $this->_resolveInterWiki() here
1018     *
1019     * @param string       $match      original link - probably not much use
1020     * @param string|array $name       name for the link, array for media file
1021     * @param string       $wikiName   indentifier (shortcut) for the remote wiki
1022     * @param string       $wikiUri    the fragment parsed from the original link
1023     * @param bool         $returnonly whether to return html or write to doc attribute
1024     * @return void|string writes to doc attribute or returns html depends on $returnonly
1025     */
1026    public function interwikilink($match, $name, $wikiName, $wikiUri, $returnonly = false) {
1027        global $conf;
1028
1029        $link           = array();
1030        $link['target'] = $conf['target']['interwiki'];
1031        $link['pre']    = '';
1032        $link['suf']    = '';
1033        $link['more']   = '';
1034        $link['name']   = $this->_getLinkTitle($name, $wikiUri, $isImage);
1035        $link['rel']    = '';
1036
1037        //get interwiki URL
1038        $exists = null;
1039        $url    = $this->_resolveInterWiki($wikiName, $wikiUri, $exists);
1040
1041        if(!$isImage) {
1042            $class         = preg_replace('/[^_\-a-z0-9]+/i', '_', $wikiName);
1043            $link['class'] = "interwiki iw_$class";
1044        } else {
1045            $link['class'] = 'media';
1046        }
1047
1048        //do we stay at the same server? Use local target
1049        if(strpos($url, DOKU_URL) === 0 OR strpos($url, DOKU_BASE) === 0) {
1050            $link['target'] = $conf['target']['wiki'];
1051        }
1052        if($exists !== null && !$isImage) {
1053            if($exists) {
1054                $link['class'] .= ' wikilink1';
1055            } else {
1056                $link['class'] .= ' wikilink2';
1057                $link['rel'] .= ' nofollow';
1058            }
1059        }
1060        if($conf['target']['interwiki']) $link['rel'] .= ' noopener';
1061
1062        $link['url']   = $url;
1063        $link['title'] = htmlspecialchars($link['url']);
1064
1065        // output formatted
1066        if($returnonly) {
1067            if($url == '') return $link['name'];
1068            return $this->_formatLink($link);
1069        } else {
1070            if($url == '') $this->doc .= $link['name'];
1071            else $this->doc .= $this->_formatLink($link);
1072        }
1073    }
1074
1075    /**
1076     * Link to windows share
1077     *
1078     * @param string       $url        the link
1079     * @param string|array $name       name for the link, array for media file
1080     * @param bool         $returnonly whether to return html or write to doc attribute
1081     * @return void|string writes to doc attribute or returns html depends on $returnonly
1082     */
1083    public function windowssharelink($url, $name = null, $returnonly = false) {
1084        global $conf;
1085
1086        //simple setup
1087        $link = array();
1088        $link['target'] = $conf['target']['windows'];
1089        $link['pre']    = '';
1090        $link['suf']    = '';
1091        $link['style']  = '';
1092
1093        $link['name'] = $this->_getLinkTitle($name, $url, $isImage);
1094        if(!$isImage) {
1095            $link['class'] = 'windows';
1096        } else {
1097            $link['class'] = 'media';
1098        }
1099
1100        $link['title'] = $this->_xmlEntities($url);
1101        $url           = str_replace('\\', '/', $url);
1102        $url           = 'file:///'.$url;
1103        $link['url']   = $url;
1104
1105        //output formatted
1106        if($returnonly) {
1107            return $this->_formatLink($link);
1108        } else {
1109            $this->doc .= $this->_formatLink($link);
1110        }
1111    }
1112
1113    /**
1114     * Render a linked E-Mail Address
1115     *
1116     * Honors $conf['mailguard'] setting
1117     *
1118     * @param string       $address    Email-Address
1119     * @param string|array $name       name for the link, array for media file
1120     * @param bool         $returnonly whether to return html or write to doc attribute
1121     * @return void|string writes to doc attribute or returns html depends on $returnonly
1122     */
1123    public function emaillink($address, $name = null, $returnonly = false) {
1124        global $conf;
1125        //simple setup
1126        $link           = array();
1127        $link['target'] = '';
1128        $link['pre']    = '';
1129        $link['suf']    = '';
1130        $link['style']  = '';
1131        $link['more']   = '';
1132
1133        $name = $this->_getLinkTitle($name, '', $isImage);
1134        if(!$isImage) {
1135            $link['class'] = 'mail';
1136        } else {
1137            $link['class'] = 'media';
1138        }
1139
1140        $address = $this->_xmlEntities($address);
1141        $address = obfuscate($address);
1142        $title   = $address;
1143
1144        if(empty($name)) {
1145            $name = $address;
1146        }
1147
1148        if($conf['mailguard'] == 'visible') $address = rawurlencode($address);
1149
1150        $link['url']   = 'mailto:'.$address;
1151        $link['name']  = $name;
1152        $link['title'] = $title;
1153
1154        //output formatted
1155        if($returnonly) {
1156            return $this->_formatLink($link);
1157        } else {
1158            $this->doc .= $this->_formatLink($link);
1159        }
1160    }
1161
1162    /**
1163     * Render an internal media file
1164     *
1165     * @param string $src       media ID
1166     * @param string $title     descriptive text
1167     * @param string $align     left|center|right
1168     * @param int    $width     width of media in pixel
1169     * @param int    $height    height of media in pixel
1170     * @param string $cache     cache|recache|nocache
1171     * @param string $linking   linkonly|detail|nolink
1172     * @param string $videoAtts controls, autoplay, loop, muted
1173     * @param bool   $return    return HTML instead of adding to $doc
1174     * @return void|string writes to doc attribute or returns html depends on $return
1175     */
1176    public function internalmedia($src, $title = null, $align = null, $width = null,
1177                           $height = null, $cache = null, $linking = null, $videoAtts = null, $return = false) {
1178        global $ID;
1179        if (strpos($src, '#') !== false) {
1180            list($src, $hash) = explode('#', $src, 2);
1181        }
1182        resolve_mediaid(getNS($ID), $src, $exists, $this->date_at, true);
1183
1184        $noLink = false;
1185        $render = ($linking == 'linkonly') ? false : true;
1186        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render, $videoAtts);
1187
1188        list($ext, $mime) = mimetype($src, false);
1189        if(substr($mime, 0, 5) == 'image' && $render) {
1190            $link['url'] = ml(
1191                $src,
1192                array(
1193                    'id' => $ID,
1194                    'cache' => $cache,
1195                    'rev' => $this->_getLastMediaRevisionAt($src)
1196                ),
1197                ($linking == 'direct')
1198            );
1199        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
1200            // don't link movies
1201            $noLink = true;
1202        } else {
1203            // add file icons
1204            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
1205            $link['class'] .= ' mediafile mf_'.$class;
1206            $link['url'] = ml(
1207                $src,
1208                array(
1209                    'id' => $ID,
1210                    'cache' => $cache,
1211                    'rev' => $this->_getLastMediaRevisionAt($src)
1212                ),
1213                true
1214            );
1215            if($exists) $link['title'] .= ' ('.filesize_h(filesize(mediaFN($src))).')';
1216        }
1217
1218        if (!empty($hash)) $link['url'] .= '#'.$hash;
1219
1220        //markup non existing files
1221        if(!$exists) {
1222            $link['class'] .= ' wikilink2';
1223        }
1224
1225        //output formatted
1226        if($return) {
1227            if($linking == 'nolink' || $noLink) return $link['name'];
1228            else return $this->_formatLink($link);
1229        } else {
1230            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
1231            else $this->doc .= $this->_formatLink($link);
1232        }
1233    }
1234
1235    /**
1236     * Render an external media file
1237     *
1238     * @param string $src     full media URL
1239     * @param string $title   descriptive text
1240     * @param string $align   left|center|right
1241     * @param int    $width   width of media in pixel
1242     * @param int    $height  height of media in pixel
1243     * @param string $cache   cache|recache|nocache
1244     * @param string $linking linkonly|detail|nolink
1245     * @param bool   $return  return HTML instead of adding to $doc
1246     * @return void|string writes to doc attribute or returns html depends on $return
1247     */
1248    public function externalmedia($src, $title = null, $align = null, $width = null,
1249                           $height = null, $cache = null, $linking = null, $videoAtts = null, $return = false) {
1250        if(link_isinterwiki($src)){
1251            list($shortcut, $reference) = explode('>', $src, 2);
1252            $exists = null;
1253            $src = $this->_resolveInterWiki($shortcut, $reference, $exists);
1254            if($src == '' && empty($title)){
1255                // make sure at least something will be shown in this case
1256                $title = $reference;
1257            }
1258        }
1259        list($src, $hash) = explode('#', $src, 2);
1260        $noLink = false;
1261        if($src == '') {
1262            // only output plaintext without link if there is no src
1263            $noLink = true;
1264        }
1265        $render = ($linking == 'linkonly') ? false : true;
1266        $link   = $this->_getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render, $videoAtts);
1267
1268        $link['url'] = ml($src, array('cache' => $cache));
1269
1270        list($ext, $mime) = mimetype($src, false);
1271        if(substr($mime, 0, 5) == 'image' && $render) {
1272            // link only jpeg images
1273            // if ($ext != 'jpg' && $ext != 'jpeg') $noLink = true;
1274        } elseif(($mime == 'application/x-shockwave-flash' || media_supportedav($mime)) && $render) {
1275            // don't link movies
1276            $noLink = true;
1277        } else {
1278            // add file icons
1279            $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $ext);
1280            $link['class'] .= ' mediafile mf_'.$class;
1281        }
1282
1283        if($hash) $link['url'] .= '#'.$hash;
1284
1285        //output formatted
1286        if($return) {
1287            if($linking == 'nolink' || $noLink) return $link['name'];
1288            else return $this->_formatLink($link);
1289        } else {
1290            if($linking == 'nolink' || $noLink) $this->doc .= $link['name'];
1291            else $this->doc .= $this->_formatLink($link);
1292        }
1293    }
1294
1295    /**
1296     * Renders an RSS feed
1297     *
1298     * @param string $url    URL of the feed
1299     * @param array  $params Finetuning of the output
1300     *
1301     * @author Andreas Gohr <andi@splitbrain.org>
1302     */
1303    public function rss($url, $params) {
1304        global $lang;
1305        global $conf;
1306
1307        require_once(DOKU_INC.'inc/FeedParser.php');
1308        $feed = new FeedParser();
1309        $feed->set_feed_url($url);
1310
1311        //disable warning while fetching
1312        if(!defined('DOKU_E_LEVEL')) {
1313            $elvl = error_reporting(E_ERROR);
1314        }
1315        $rc = $feed->init();
1316        if(isset($elvl)) {
1317            error_reporting($elvl);
1318        }
1319
1320        if($params['nosort']) $feed->enable_order_by_date(false);
1321
1322        //decide on start and end
1323        if($params['reverse']) {
1324            $mod   = -1;
1325            $start = $feed->get_item_quantity() - 1;
1326            $end   = $start - ($params['max']);
1327            $end   = ($end < -1) ? -1 : $end;
1328        } else {
1329            $mod   = 1;
1330            $start = 0;
1331            $end   = $feed->get_item_quantity();
1332            $end   = ($end > $params['max']) ? $params['max'] : $end;
1333        }
1334
1335        $this->doc .= '<ul class="rss">';
1336        if($rc) {
1337            for($x = $start; $x != $end; $x += $mod) {
1338                $item = $feed->get_item($x);
1339                $this->doc .= '<li><div class="li">';
1340                // support feeds without links
1341                $lnkurl = $item->get_permalink();
1342                if($lnkurl) {
1343                    // title is escaped by SimplePie, we unescape here because it
1344                    // is escaped again in externallink() FS#1705
1345                    $this->externallink(
1346                        $item->get_permalink(),
1347                        html_entity_decode($item->get_title(), ENT_QUOTES, 'UTF-8')
1348                    );
1349                } else {
1350                    $this->doc .= ' '.$item->get_title();
1351                }
1352                if($params['author']) {
1353                    $author = $item->get_author(0);
1354                    if($author) {
1355                        $name = $author->get_name();
1356                        if(!$name) $name = $author->get_email();
1357                        if($name) $this->doc .= ' '.$lang['by'].' '.hsc($name);
1358                    }
1359                }
1360                if($params['date']) {
1361                    $this->doc .= ' ('.$item->get_local_date($conf['dformat']).')';
1362                }
1363                if($params['details']) {
1364                    $this->doc .= '<div class="detail">';
1365                    if($conf['htmlok']) {
1366                        $this->doc .= $item->get_description();
1367                    } else {
1368                        $this->doc .= strip_tags($item->get_description());
1369                    }
1370                    $this->doc .= '</div>';
1371                }
1372
1373                $this->doc .= '</div></li>';
1374            }
1375        } else {
1376            $this->doc .= '<li><div class="li">';
1377            $this->doc .= '<em>'.$lang['rssfailed'].'</em>';
1378            $this->externallink($url);
1379            if($conf['allowdebug']) {
1380                $this->doc .= '<!--'.hsc($feed->error).'-->';
1381            }
1382            $this->doc .= '</div></li>';
1383        }
1384        $this->doc .= '</ul>';
1385    }
1386
1387    /**
1388     * Start a table
1389     *
1390     * @param int $maxcols maximum number of columns
1391     * @param int $numrows NOT IMPLEMENTED
1392     * @param int $pos byte position in the original source
1393     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1394     */
1395    public function table_open($maxcols = null, $numrows = null, $pos = null, $classes = null) {
1396        // initialize the row counter used for classes
1397        $this->_counter['row_counter'] = 0;
1398        $class                         = 'table';
1399        if($classes !== null) {
1400            if(is_array($classes)) $classes = join(' ', $classes);
1401            $class .= ' ' . $classes;
1402        }
1403        if($pos !== null) {
1404            $hid = $this->_headerToLink($class, true);
1405            $data = array();
1406            $data['target'] = 'table';
1407            $data['name'] = '';
1408            $data['hid'] = $hid;
1409            $class .= ' '.$this->startSectionEdit($pos, $data);
1410        }
1411        $this->doc .= '<div class="'.$class.'"><table class="inline">'.
1412            DOKU_LF;
1413    }
1414
1415    /**
1416     * Close a table
1417     *
1418     * @param int $pos byte position in the original source
1419     */
1420    public function table_close($pos = null) {
1421        $this->doc .= '</table></div>'.DOKU_LF;
1422        if($pos !== null) {
1423            $this->finishSectionEdit($pos);
1424        }
1425    }
1426
1427    /**
1428     * Open a table header
1429     */
1430    public function tablethead_open() {
1431        $this->doc .= DOKU_TAB.'<thead>'.DOKU_LF;
1432    }
1433
1434    /**
1435     * Close a table header
1436     */
1437    public function tablethead_close() {
1438        $this->doc .= DOKU_TAB.'</thead>'.DOKU_LF;
1439    }
1440
1441    /**
1442     * Open a table body
1443     */
1444    public function tabletbody_open() {
1445        $this->doc .= DOKU_TAB.'<tbody>'.DOKU_LF;
1446    }
1447
1448    /**
1449     * Close a table body
1450     */
1451    public function tabletbody_close() {
1452        $this->doc .= DOKU_TAB.'</tbody>'.DOKU_LF;
1453    }
1454
1455    /**
1456     * Open a table footer
1457     */
1458    public function tabletfoot_open() {
1459        $this->doc .= DOKU_TAB.'<tfoot>'.DOKU_LF;
1460    }
1461
1462    /**
1463     * Close a table footer
1464     */
1465    public function tabletfoot_close() {
1466        $this->doc .= DOKU_TAB.'</tfoot>'.DOKU_LF;
1467    }
1468
1469    /**
1470     * Open a table row
1471     *
1472     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1473     */
1474    public function tablerow_open($classes = null) {
1475        // initialize the cell counter used for classes
1476        $this->_counter['cell_counter'] = 0;
1477        $class                          = 'row'.$this->_counter['row_counter']++;
1478        if($classes !== null) {
1479            if(is_array($classes)) $classes = join(' ', $classes);
1480            $class .= ' ' . $classes;
1481        }
1482        $this->doc .= DOKU_TAB.'<tr class="'.$class.'">'.DOKU_LF.DOKU_TAB.DOKU_TAB;
1483    }
1484
1485    /**
1486     * Close a table row
1487     */
1488    public function tablerow_close() {
1489        $this->doc .= DOKU_LF.DOKU_TAB.'</tr>'.DOKU_LF;
1490    }
1491
1492    /**
1493     * Open a table header cell
1494     *
1495     * @param int    $colspan
1496     * @param string $align left|center|right
1497     * @param int    $rowspan
1498     * @param string|string[] $classes css classes - have to be valid, do not pass unfiltered user input
1499     */
1500    public function tableheader_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
1501        $class = 'class="col'.$this->_counter['cell_counter']++;
1502        if(!is_null($align)) {
1503            $class .= ' '.$align.'align';
1504        }
1505        if($classes !== null) {
1506            if(is_array($classes)) $classes = join(' ', $classes);
1507            $class .= ' ' . $classes;
1508        }
1509        $class .= '"';
1510        $this->doc .= '<th '.$class;
1511        if($colspan > 1) {
1512            $this->_counter['cell_counter'] += $colspan - 1;
1513            $this->doc .= ' colspan="'.$colspan.'"';
1514        }
1515        if($rowspan > 1) {
1516            $this->doc .= ' rowspan="'.$rowspan.'"';
1517        }
1518        $this->doc .= '>';
1519    }
1520
1521    /**
1522     * Close a table header cell
1523     */
1524    public function tableheader_close() {
1525        $this->doc .= '</th>';
1526    }
1527
1528    /**
1529     * Open a table cell
1530     *
1531     * @param int       $colspan
1532     * @param string    $align left|center|right
1533     * @param int       $rowspan
1534     * @param string|string[]    $classes css classes - have to be valid, do not pass unfiltered user input
1535     */
1536    public function tablecell_open($colspan = 1, $align = null, $rowspan = 1, $classes = null) {
1537        $class = 'class="col'.$this->_counter['cell_counter']++;
1538        if(!is_null($align)) {
1539            $class .= ' '.$align.'align';
1540        }
1541        if($classes !== null) {
1542            if(is_array($classes)) $classes = join(' ', $classes);
1543            $class .= ' ' . $classes;
1544        }
1545        $class .= '"';
1546        $this->doc .= '<td '.$class;
1547        if($colspan > 1) {
1548            $this->_counter['cell_counter'] += $colspan - 1;
1549            $this->doc .= ' colspan="'.$colspan.'"';
1550        }
1551        if($rowspan > 1) {
1552            $this->doc .= ' rowspan="'.$rowspan.'"';
1553        }
1554        $this->doc .= '>';
1555    }
1556
1557    /**
1558     * Close a table cell
1559     */
1560    public function tablecell_close() {
1561        $this->doc .= '</td>';
1562    }
1563
1564    /**
1565     * Returns the current header level.
1566     * (required e.g. by the filelist plugin)
1567     *
1568     * @return int The current header level
1569     */
1570    public function getLastlevel() {
1571        return $this->lastlevel;
1572    }
1573
1574    #region Utility functions
1575
1576    /**
1577     * Build a link
1578     *
1579     * Assembles all parts defined in $link returns HTML for the link
1580     *
1581     * @param array $link attributes of a link
1582     * @return string
1583     *
1584     * @author Andreas Gohr <andi@splitbrain.org>
1585     */
1586    public function _formatLink($link) {
1587        //make sure the url is XHTML compliant (skip mailto)
1588        if(substr($link['url'], 0, 7) != 'mailto:') {
1589            $link['url'] = str_replace('&', '&amp;', $link['url']);
1590            $link['url'] = str_replace('&amp;amp;', '&amp;', $link['url']);
1591        }
1592        //remove double encodings in titles
1593        $link['title'] = str_replace('&amp;amp;', '&amp;', $link['title']);
1594
1595        // be sure there are no bad chars in url or title
1596        // (we can't do this for name because it can contain an img tag)
1597        $link['url']   = strtr($link['url'], array('>' => '%3E', '<' => '%3C', '"' => '%22'));
1598        $link['title'] = strtr($link['title'], array('>' => '&gt;', '<' => '&lt;', '"' => '&quot;'));
1599
1600        $ret = '';
1601        $ret .= $link['pre'];
1602        $ret .= '<a href="'.$link['url'].'"';
1603        if(!empty($link['class'])) $ret .= ' class="'.$link['class'].'"';
1604        if(!empty($link['target'])) $ret .= ' target="'.$link['target'].'"';
1605        if(!empty($link['title'])) $ret .= ' title="'.$link['title'].'"';
1606        if(!empty($link['style'])) $ret .= ' style="'.$link['style'].'"';
1607        if(!empty($link['rel'])) $ret .= ' rel="'.trim($link['rel']).'"';
1608        if(!empty($link['more'])) $ret .= ' '.$link['more'];
1609        $ret .= '>';
1610        $ret .= $link['name'];
1611        $ret .= '</a>';
1612        $ret .= $link['suf'];
1613        return $ret;
1614    }
1615
1616    /**
1617     * Renders internal and external media
1618     *
1619     * @author Andreas Gohr <andi@splitbrain.org>
1620     * @param string $src       media ID
1621     * @param string $title     descriptive text
1622     * @param string $align     left|center|right
1623     * @param int    $width     width of media in pixel
1624     * @param int    $height    height of media in pixel
1625     * @param string $cache     cache|recache|nocache
1626     * @param bool   $render    should the media be embedded inline or just linked
1627     * @return string
1628     */
1629    public function _media($src, $title = null, $align = null, $width = null,
1630                    $height = null, $cache = null, $render = true, $videoAtts = null) {
1631
1632        $ret = '';
1633
1634        list($ext, $mime) = mimetype($src);
1635        if(substr($mime, 0, 5) == 'image') {
1636            // first get the $title
1637            if(!is_null($title)) {
1638                $title = $this->_xmlEntities($title);
1639            } elseif($ext == 'jpg' || $ext == 'jpeg') {
1640                //try to use the caption from IPTC/EXIF
1641                require_once(DOKU_INC.'inc/JpegMeta.php');
1642                $jpeg = new JpegMeta(mediaFN($src));
1643                if($jpeg !== false) $cap = $jpeg->getTitle();
1644                if(!empty($cap)) {
1645                    $title = $this->_xmlEntities($cap);
1646                }
1647            }
1648            if(!$render) {
1649                // if the picture is not supposed to be rendered
1650                // return the title of the picture
1651                if($title === null || $title === "") {
1652                    // just show the sourcename
1653                    $title = $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($src)));
1654                }
1655                return $title;
1656            }
1657            //add image tag
1658            $ret .= '<img src="' . ml(
1659                    $src,
1660                    array(
1661                        'w' => $width, 'h' => $height,
1662                        'cache' => $cache,
1663                        'rev' => $this->_getLastMediaRevisionAt($src)
1664                    )
1665                ) . '"';
1666            $ret .= ' class="media'.$align.'"';
1667
1668            if($title) {
1669                $ret .= ' title="'.$title.'"';
1670                $ret .= ' alt="'.$title.'"';
1671            } else {
1672                $ret .= ' alt=""';
1673            }
1674
1675            if(!is_null($width))
1676                $ret .= ' width="'.$this->_xmlEntities($width).'"';
1677
1678            if(!is_null($height))
1679                $ret .= ' height="'.$this->_xmlEntities($height).'"';
1680
1681            $ret .= ' />';
1682
1683        } elseif(media_supportedav($mime, 'video') || media_supportedav($mime, 'audio')) {
1684            // first get the $title
1685            $title = !is_null($title) ? $title : false;
1686            if(!$render) {
1687                // if the file is not supposed to be rendered
1688                // return the title of the file (just the sourcename if there is no title)
1689                return $this->_xmlEntities($title ? $title : \dokuwiki\Utf8\PhpString::basename(noNS($src)));
1690            }
1691
1692            $att          = array();
1693            $att['class'] = "media$align";
1694            if($title) {
1695                $att['title'] = $title;
1696            }
1697
1698            if(media_supportedav($mime, 'video')) {
1699                //add video
1700                $ret .= $this->_video($src, $width, $height, $att, $videoAtts);
1701            }
1702            if(media_supportedav($mime, 'audio')) {
1703                //add audio
1704                $ret .= $this->_audio($src, $att);
1705            }
1706
1707        } elseif($mime == 'application/x-shockwave-flash') {
1708            if(!$render) {
1709                // if the flash is not supposed to be rendered
1710                // return the title of the flash
1711                if(!$title) {
1712                    // just show the sourcename
1713                    $title = \dokuwiki\Utf8\PhpString::basename(noNS($src));
1714                }
1715                return $this->_xmlEntities($title);
1716            }
1717
1718            $att          = array();
1719            $att['class'] = "media$align";
1720            if($align == 'right') $att['align'] = 'right';
1721            if($align == 'left') $att['align'] = 'left';
1722            $ret .= html_flashobject(
1723                ml($src, array('cache' => $cache), true, '&'), $width, $height,
1724                array('quality' => 'high'),
1725                null,
1726                $att,
1727                $this->_xmlEntities($title)
1728            );
1729        } elseif($title) {
1730            // well at least we have a title to display
1731            $ret .= $this->_xmlEntities($title);
1732        } else {
1733            // just show the sourcename
1734            $ret .= $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($src)));
1735        }
1736
1737        return $ret;
1738    }
1739
1740    /**
1741     * Escape string for output
1742     *
1743     * @param $string
1744     * @return string
1745     */
1746    public function _xmlEntities($string) {
1747        return htmlspecialchars($string, ENT_QUOTES, 'UTF-8');
1748    }
1749
1750
1751
1752    /**
1753     * Construct a title and handle images in titles
1754     *
1755     * @author Harry Fuecks <hfuecks@gmail.com>
1756     * @param string|array $title    either string title or media array
1757     * @param string       $default  default title if nothing else is found
1758     * @param bool         $isImage  will be set to true if it's a media file
1759     * @param null|string  $id       linked page id (used to extract title from first heading)
1760     * @param string       $linktype content|navigation
1761     * @return string      HTML of the title, might be full image tag or just escaped text
1762     */
1763    public function _getLinkTitle($title, $default, &$isImage, $id = null, $linktype = 'content') {
1764        $isImage = false;
1765        if(is_array($title)) {
1766            $isImage = true;
1767            return $this->_imageTitle($title);
1768        } elseif(is_null($title) || trim($title) == '') {
1769            if(useHeading($linktype) && $id) {
1770                $heading = p_get_first_heading($id);
1771                if(!blank($heading)) {
1772                    return $this->_xmlEntities($heading);
1773                }
1774            }
1775            return $this->_xmlEntities($default);
1776        } else {
1777            return $this->_xmlEntities($title);
1778        }
1779    }
1780
1781    /**
1782     * Returns HTML code for images used in link titles
1783     *
1784     * @author Andreas Gohr <andi@splitbrain.org>
1785     * @param array $img
1786     * @return string HTML img tag or similar
1787     */
1788    public function _imageTitle($img) {
1789        global $ID;
1790
1791        // some fixes on $img['src']
1792        // see internalmedia() and externalmedia()
1793        list($img['src']) = explode('#', $img['src'], 2);
1794        if($img['type'] == 'internalmedia') {
1795            resolve_mediaid(getNS($ID), $img['src'], $exists ,$this->date_at, true);
1796        }
1797
1798        return $this->_media(
1799            $img['src'],
1800            $img['title'],
1801            $img['align'],
1802            $img['width'],
1803            $img['height'],
1804            $img['cache']
1805        );
1806    }
1807
1808    /**
1809     * helperfunction to return a basic link to a media
1810     *
1811     * used in internalmedia() and externalmedia()
1812     *
1813     * @author   Pierre Spring <pierre.spring@liip.ch>
1814     * @param string $src       media ID
1815     * @param string $title     descriptive text
1816     * @param string $align     left|center|right
1817     * @param int    $width     width of media in pixel
1818     * @param int    $height    height of media in pixel
1819     * @param string $cache     cache|recache|nocache
1820     * @param bool   $render    should the media be embedded inline or just linked
1821     * @return array associative array with link config
1822     */
1823    public function _getMediaLinkConf($src, $title, $align, $width, $height, $cache, $render, $videoAtts = null) {
1824        global $conf;
1825
1826        $link           = array();
1827        $link['class']  = 'media';
1828        $link['style']  = '';
1829        $link['pre']    = '';
1830        $link['suf']    = '';
1831        $link['more']   = '';
1832        $link['target'] = $conf['target']['media'];
1833        if($conf['target']['media']) $link['rel'] = 'noopener';
1834        $link['title']  = $this->_xmlEntities($src);
1835        $link['name']   = $this->_media($src, $title, $align, $width, $height, $cache, $render, $videoAtts);
1836
1837        return $link;
1838    }
1839
1840    /**
1841     * Embed video(s) in HTML
1842     *
1843     * @author Anika Henke <anika@selfthinker.org>
1844     * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
1845     *
1846     * @param string $src         - ID of video to embed
1847     * @param int    $width       - width of the video in pixels
1848     * @param int    $height      - height of the video in pixels
1849     * @param array  $atts        - additional attributes for the <video> tag
1850     * @return string
1851     */
1852    public function _video($src, $width, $height, $atts = null, $videoAtts = null)  {
1853        // prepare width and height
1854        if(is_null($atts)) $atts = array();
1855        $atts['width']  = (int) $width;
1856        $atts['height'] = (int) $height;
1857        if(!$atts['width']) $atts['width'] = 320;
1858        if(!$atts['height']) $atts['height'] = "auto";
1859
1860        $posterUrl = '';
1861        $files = array();
1862        $tracks = array();
1863        $isExternal = media_isexternal($src);
1864
1865        if ($isExternal) {
1866            // take direct source for external files
1867            list(/*ext*/, $srcMime) = mimetype($src);
1868            $files[$srcMime] = $src;
1869        } else {
1870            // prepare alternative formats
1871            $extensions   = array('webm', 'ogv', 'mp4');
1872            $files        = media_alternativefiles($src, $extensions);
1873            $poster       = media_alternativefiles($src, array('jpg', 'png'));
1874            $tracks       = media_trackfiles($src);
1875            if(!empty($poster)) {
1876                $posterUrl = ml(reset($poster), '', true, '&');
1877            }
1878        }
1879
1880        $out = '';
1881        // open video tag
1882        $out .= '<video '.buildAttributes($atts);
1883        if(!$videoAtts["nocontrols"]) $out .= ' controls="controls"';
1884        if($videoAtts["autoplay"]) $out .= ' autoplay="autoplay"';
1885        if($videoAtts["loop"]) $out .= ' loop="loop"';
1886        if($videoAtts["muted"]) $out .= ' muted="muted"';
1887
1888        if($posterUrl) $out .= ' poster="'.hsc($posterUrl).'"';
1889        $out .= '>'.NL;
1890        $fallback = '';
1891
1892        // output source for each alternative video format
1893        foreach($files as $mime => $file) {
1894            if ($isExternal) {
1895                $url = $file;
1896                $linkType = 'externalmedia';
1897            } else {
1898                $url = ml($file, '', true, '&');
1899                $linkType = 'internalmedia';
1900            }
1901            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($file)));
1902
1903            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
1904            // alternative content (just a link to the file)
1905            $fallback .= $this->$linkType(
1906                $file,
1907                $title,
1908                null,
1909                null,
1910                null,
1911                $cache = null,
1912                $linking = 'linkonly',
1913                $videoAtts = $videoAtts,
1914                $return = true
1915            );
1916        }
1917
1918        // output each track if any
1919        foreach( $tracks as $trackid => $info ) {
1920            list( $kind, $srclang ) = array_map( 'hsc', $info );
1921            $out .= "<track kind=\"$kind\" srclang=\"$srclang\" ";
1922            $out .= "label=\"$srclang\" ";
1923            $out .= 'src="'.ml($trackid, '', true).'">'.NL;
1924        }
1925
1926        // finish
1927        $out .= $fallback;
1928        $out .= '</video>'.NL;
1929        return $out;
1930    }
1931
1932    /**
1933     * Embed audio in HTML
1934     *
1935     * @author Anika Henke <anika@selfthinker.org>
1936     *
1937     * @param string $src       - ID of audio to embed
1938     * @param array  $atts      - additional attributes for the <audio> tag
1939     * @return string
1940     */
1941    public function _audio($src, $atts = array()) {
1942        $files = array();
1943        $isExternal = media_isexternal($src);
1944
1945        if ($isExternal) {
1946            // take direct source for external files
1947            list(/*ext*/, $srcMime) = mimetype($src);
1948            $files[$srcMime] = $src;
1949        } else {
1950            // prepare alternative formats
1951            $extensions   = array('ogg', 'mp3', 'wav');
1952            $files        = media_alternativefiles($src, $extensions);
1953        }
1954
1955        $out = '';
1956        // open audio tag
1957        $out .= '<audio '.buildAttributes($atts).' controls="controls">'.NL;
1958        $fallback = '';
1959
1960        // output source for each alternative audio format
1961        foreach($files as $mime => $file) {
1962            if ($isExternal) {
1963                $url = $file;
1964                $linkType = 'externalmedia';
1965            } else {
1966                $url = ml($file, '', true, '&');
1967                $linkType = 'internalmedia';
1968            }
1969            $title = $atts['title'] ? $atts['title'] : $this->_xmlEntities(\dokuwiki\Utf8\PhpString::basename(noNS($file)));
1970
1971            $out .= '<source src="'.hsc($url).'" type="'.$mime.'" />'.NL;
1972            // alternative content (just a link to the file)
1973            $fallback .= $this->$linkType(
1974                $file,
1975                $title,
1976                null,
1977                null,
1978                null,
1979                $cache = null,
1980                $linking = 'linkonly',
1981                $return = true
1982            );
1983        }
1984
1985        // finish
1986        $out .= $fallback;
1987        $out .= '</audio>'.NL;
1988        return $out;
1989    }
1990
1991    /**
1992     * _getLastMediaRevisionAt is a helperfunction to internalmedia() and _media()
1993     * which returns an existing media revision less or equal to rev or date_at
1994     *
1995     * @author lisps
1996     * @param string $media_id
1997     * @access protected
1998     * @return string revision ('' for current)
1999     */
2000    protected function _getLastMediaRevisionAt($media_id){
2001        if(!$this->date_at || media_isexternal($media_id)) return '';
2002        $pagelog = new MediaChangeLog($media_id);
2003        return $pagelog->getLastRevisionAt($this->date_at);
2004    }
2005
2006    #endregion
2007}
2008
2009//Setup VIM: ex: et ts=4 :
2010