xref: /plugin/dw2pdf/action.php (revision 74507a849a3f7f407a10ddbb8d6ba4c3e96f093c) 
1<?php
2/**
3 * dw2Pdf Plugin: Conversion from dokuwiki content to pdf.
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Luigi Micco <l.micco@tiscali.it>
7 * @author     Andreas Gohr <andi@splitbrain.org>
8 */
9
10// must be run within Dokuwiki
11if(!defined('DOKU_INC')) die();
12
13/**
14 * Class action_plugin_dw2pdf
15 *
16 * Export hmtl content to pdf, for different url parameter configurations
17 * DokuPDF which extends mPDF is used for generating the pdf from html.
18 */
19class action_plugin_dw2pdf extends DokuWiki_Action_Plugin {
20    /**
21     * Settings for current export, collected from url param, plugin config, global config
22     *
23     * @var array
24     */
25    protected $exportConfig = null;
26    protected $tpl;
27    protected $list = array();
28
29    /**
30     * Constructor. Sets the correct template
31     */
32    public function __construct() {
33        $this->tpl = $this->getExportConfig('template');
34    }
35
36    /**
37     * Register the events
38     */
39    public function register(Doku_Event_Handler $controller) {
40        $controller->register_hook('ACTION_ACT_PREPROCESS', 'BEFORE', $this, 'convert', array());
41        $controller->register_hook('TEMPLATE_PAGETOOLS_DISPLAY', 'BEFORE', $this, 'addbutton', array());
42    }
43
44    /**
45     * Do the HTML to PDF conversion work
46     *
47     * @param Doku_Event $event
48     * @param array      $param
49     * @return bool
50     */
51    public function convert(Doku_Event $event, $param) {
52        global $ACT;
53        global $REV;
54        global $ID;
55
56        // our event?
57        if(($ACT != 'export_pdfbook') && ($ACT != 'export_pdf') && ($ACT != 'export_pdfns')) return false;
58
59        // check user's rights
60        if(auth_quickaclcheck($ID) < AUTH_READ) return false;
61
62        if($data = $this->collectExportPages($event)) {
63            list($title, $this->list) = $data;
64        } else {
65            return false;
66        }
67
68        // it's ours, no one else's
69        $event->preventDefault();
70
71        // prepare cache
72        $cachekey = join(',', $this->list)
73                    . $REV
74                    . $this->getExportConfig('template')
75                    . $this->getExportConfig('pagesize')
76                    . $this->getExportConfig('orientation')
77                    . $this->getExportConfig('doublesided')
78                    . ($this->getExportConfig('hasToC') ? join('-', $this->getExportConfig('levels')) : '0')
79                    . $title;
80        $cache = new cache($cachekey, '.dw2.pdf');
81
82        $dependencies = array();
83        foreach($this->list as $pageid) {
84            $relations = p_get_metadata($pageid, 'relation');
85
86            if (is_array($relations)) {
87                if(array_key_exists('media', $relations) && is_array($relations['media'])) {
88                    foreach($relations['media'] as $mediaid => $exists) {
89                        if($exists) {
90                            $dependencies[] = mediaFN($mediaid);
91                        }
92                    }
93                }
94
95                if(array_key_exists('haspart', $relations) && is_array($relations['haspart'])) {
96                    foreach($relations['haspart'] as $part_pageid => $exists) {
97                        if($exists) {
98                            $dependencies[] = wikiFN($part_pageid);
99                        }
100                    }
101                }
102            }
103
104            $dependencies[] = metaFN($pageid,'.meta');
105        }
106
107        $depends['files']   = array_map('wikiFN', $this->list);
108        $depends['files'][] = __FILE__;
109        $depends['files'][] = dirname(__FILE__) . '/renderer.php';
110        $depends['files'][] = dirname(__FILE__) . '/mpdf/mpdf.php';
111        $depends['files']   = array_merge(
112                                $depends['files'],
113                                $dependencies,
114                                getConfigFiles('main')
115                              );
116
117        // hard work only when no cache available
118        if(!$this->getConf('usecache') || !$cache->useCache($depends)) {
119            $this->generatePDF($cache->cache, $title);
120        }
121
122        // deliver the file
123        $this->sendPDFFile($cache->cache, $title);
124        return true;
125    }
126
127
128    /**
129     * Obtain list of pages and title, based on url parameters
130     *
131     * @param Doku_Event $event
132     * @return string|bool
133     */
134    protected function collectExportPages(Doku_Event $event) {
135        global $ACT;
136        global $ID;
137        global $INPUT;
138        global $conf;
139
140        // list of one or multiple pages
141        $list = array();
142
143        if($ACT == 'export_pdf') {
144            $list[0] = $ID;
145            $title = $INPUT->str('pdftitle');
146            if(!$title) {
147                $title = p_get_first_heading($ID);
148            }
149
150        } elseif($ACT == 'export_pdfns') {
151            //check input for title and ns
152            if(!$title = $INPUT->str('pdfns_title')) {
153                $this->showPageWithErrorMsg($event, 'needtitle');
154                return false;
155            }
156            $pdfnamespace = cleanID($INPUT->str('pdfns_ns'));
157            if(!@is_dir(dirname(wikiFN($pdfnamespace . ':dummy')))) {
158                $this->showPageWithErrorMsg($event, 'needns');
159                return false;
160            }
161
162            //sort order
163            $order = $INPUT->str('pdfns_order', 'natural', true);
164            $sortoptions = array('pagename', 'date', 'natural');
165            if(!in_array($order, $sortoptions)) {
166                $order = 'natural';
167            }
168
169            //search depth
170            $depth = $INPUT->int('pdfns_depth', 0);
171            if($depth < 0) {
172                $depth = 0;
173            }
174
175            //page search
176            $result = array();
177            $opts = array('depth' => $depth); //recursive all levels
178            $dir = utf8_encodeFN(str_replace(':', '/', $pdfnamespace));
179            search($result, $conf['datadir'], 'search_allpages', $opts, $dir);
180
181            //sorting
182            if(count($result) > 0) {
183                if($order == 'date') {
184                    usort($result, array($this, '_datesort'));
185                } elseif($order == 'pagename') {
186                    usort($result, array($this, '_pagenamesort'));
187                }
188            }
189
190            foreach($result as $item) {
191                $list[] = $item['id'];
192            }
193
194        } elseif(isset($_COOKIE['list-pagelist']) && !empty($_COOKIE['list-pagelist'])) {
195            //is in Bookmanager of bookcreator plugin a title given?
196            if(!$title = $INPUT->str('pdfbook_title')) {
197                $this->showPageWithErrorMsg($event, 'needtitle');
198                return false;
199            } else {
200                $list = explode("|", $_COOKIE['list-pagelist']);
201            }
202
203        } else {
204            //show empty bookcreator message
205            $this->showPageWithErrorMsg($event, 'empty');
206            return false;
207        }
208
209        $list = array_map('cleanID', $list);
210        return array($title, $list);
211    }
212
213
214    /**
215     * Set error notification and reload page again
216     *
217     * @param Doku_Event $event
218     * @param string     $msglangkey key of translation key
219     */
220    private function showPageWithErrorMsg(Doku_Event $event, $msglangkey) {
221        msg($this->getLang($msglangkey), -1);
222
223        $event->data = 'show';
224        $_SERVER['REQUEST_METHOD'] = 'POST'; //clears url
225    }
226
227    /**
228     * Build a pdf from the html
229     *
230     * @param string $cachefile
231     * @param string $title
232     */
233    protected function generatePDF($cachefile, $title) {
234        global $ID;
235        global $REV;
236        global $INPUT;
237
238        //some shortcuts to export settings
239        $hasToC = $this->getExportConfig('hasToC');
240        $levels = $this->getExportConfig('levels');
241        $isDebug = $this->getExportConfig('isDebug');
242
243        // initialize PDF library
244        require_once(dirname(__FILE__) . "/DokuPDF.class.php");
245
246        $mpdf = new DokuPDF($this->getExportConfig('pagesize'), $this->getExportConfig('orientation'));
247
248        // let mpdf fix local links
249        $self = parse_url(DOKU_URL);
250        $url = $self['scheme'] . '://' . $self['host'];
251        if($self['port']) {
252            $url .= ':' . $self['port'];
253        }
254        $mpdf->setBasePath($url);
255
256        // Set the title
257        $mpdf->SetTitle($title);
258
259        // some default document settings
260        //note: double-sided document, starts at an odd page (first page is a right-hand side page)
261        //      single-side document has only odd pages
262        $mpdf->mirrorMargins = $this->getExportConfig('doublesided');
263        $mpdf->useOddEven = $this->getExportConfig('doublesided'); //duplicate of mirrorMargins
264        $mpdf->setAutoTopMargin = 'stretch';
265        $mpdf->setAutoBottomMargin = 'stretch';
266//            $mpdf->pagenumSuffix = '/'; //prefix for {nbpg}
267        if($hasToC) {
268            $mpdf->PageNumSubstitutions[] = array('from' => 1, 'reset' => 0, 'type' => 'i', 'suppress' => 'off'); //use italic pageno until ToC
269            $mpdf->h2toc = $levels;
270        } else {
271            $mpdf->PageNumSubstitutions[] = array('from' => 1, 'reset' => 0, 'type' => '1', 'suppress' => 'off');
272        }
273
274        // load the template
275        $template = $this->load_template($title);
276
277        // prepare HTML header styles
278        $html = '';
279        if($isDebug) {
280            $html .= '<html><head>';
281            $html .= '<style type="text/css">';
282        }
283        $styles = $this->load_css();
284        $styles .= '@page { size:auto; ' . $template['page'] . '}';
285        $styles .= '@page :first {' . $template['first'] . '}';
286
287        $styles .= '@page landscape-page { size:landscape }';
288        $styles .= 'div.dw2pdf-landscape { page:landscape-page }';
289        $styles .= '@page portrait-page { size:portrait }';
290        $styles .= 'div.dw2pdf-portrait { page:portrait-page }';
291
292        $mpdf->WriteHTML($styles, 1);
293
294        if($isDebug) {
295            $html .= $styles;
296            $html .= '</style>';
297            $html .= '</head><body>';
298        }
299
300        $body_start = $template['html'];
301        $body_start .= '<div class="dokuwiki">';
302
303        // insert the cover page
304        $body_start .= $template['cover'];
305
306        $mpdf->WriteHTML($body_start, 2, true, false); //start body html
307        if($isDebug) {
308            $html .= $body_start;
309        }
310        if($hasToC) {
311            //Note: - for double-sided document the ToC is always on an even number of pages, so that the following content is on a correct odd/even page
312            //      - first page of ToC starts always at odd page (so eventually an additional blank page is included before)
313            //      - there is no page numbering at the pages of the ToC
314            $mpdf->TOCpagebreakByArray(
315                array(
316                    'toc-preHTML' => '<h2>' . $this->getLang('tocheader') . '</h2>',
317                    'toc-bookmarkText' => $this->getLang('tocheader'),
318                    'links' => true,
319                    'outdent' => '1em',
320                    'resetpagenum' => true, //start pagenumbering after ToC
321                    'pagenumstyle' => '1'
322                )
323            );
324            $html .= '<tocpagebreak>';
325        }
326
327        // store original pageid
328        $keep = $ID;
329
330        // loop over all pages
331        $cnt = count($this->list);
332        for($n = 0; $n < $cnt; $n++) {
333            $page = $this->list[$n];
334
335            // set global pageid to the rendered page
336            $ID = $page;
337
338            $pagehtml = p_cached_output(wikiFN($page, $REV), 'dw2pdf', $page);
339            $pagehtml .= $this->page_depend_replacements($template['cite'], $page);
340            if($n < ($cnt - 1)) {
341                $pagehtml .= '<pagebreak />';
342            }
343
344            $mpdf->WriteHTML($pagehtml, 2, false, false); //intermediate body html
345            if($isDebug) {
346                $html .= $pagehtml;
347            }
348        }
349        //restore ID
350        $ID = $keep;
351
352        // insert the back page
353        $body_end = $template['back'];
354
355        $body_end .= '</div>';
356
357        $mpdf->WriteHTML($body_end, 2, false, true); // finish body html
358        if($isDebug) {
359            $html .= $body_end;
360            $html .= '</body>';
361            $html .= '</html>';
362        }
363
364        //Return html for debugging
365        if($isDebug) {
366            if($INPUT->str('debughtml', 'text', true) == 'html') {
367                echo $html;
368            } else {
369                header('Content-Type: text/plain; charset=utf-8');
370                echo $html;
371            }
372            exit();
373        };
374
375        // write to cache file
376        $mpdf->Output($cachefile, 'F');
377    }
378
379    /**
380     * @param string $cachefile
381     * @param string $title
382     */
383    protected function sendPDFFile($cachefile, $title) {
384        header('Content-Type: application/pdf');
385        header('Cache-Control: must-revalidate, no-transform, post-check=0, pre-check=0');
386        header('Pragma: public');
387        http_conditionalRequest(filemtime($cachefile));
388
389        $filename = rawurlencode(cleanID(strtr($title, ':/;"', '    ')));
390        if($this->getConf('output') == 'file') {
391            header('Content-Disposition: attachment; filename="' . $filename . '.pdf";');
392        } else {
393            header('Content-Disposition: inline; filename="' . $filename . '.pdf";');
394        }
395
396        //try to send file, and exit if done
397        http_sendfile($cachefile);
398
399        $fp = @fopen($cachefile, "rb");
400        if($fp) {
401            http_rangeRequest($fp, filesize($cachefile), 'application/pdf');
402        } else {
403            header("HTTP/1.0 500 Internal Server Error");
404            print "Could not read file - bad permissions?";
405        }
406        exit();
407    }
408
409    /**
410     * Load the various template files and prepare the HTML/CSS for insertion
411     */
412    protected function load_template($title) {
413        global $ID;
414        global $conf;
415
416        // this is what we'll return
417        $output = array(
418            'cover' => '',
419            'html'  => '',
420            'page'  => '',
421            'first' => '',
422            'cite'  => '',
423        );
424
425        // prepare header/footer elements
426        $html = '';
427        foreach(array('header', 'footer') as $section) {
428            foreach(array('', '_odd', '_even', '_first') as $order) {
429                $file = DOKU_PLUGIN . 'dw2pdf/tpl/' . $this->tpl . '/' . $section . $order . '.html';
430                if(file_exists($file)) {
431                    $html .= '<htmlpage' . $section . ' name="' . $section . $order . '">' . DOKU_LF;
432                    $html .= file_get_contents($file) . DOKU_LF;
433                    $html .= '</htmlpage' . $section . '>' . DOKU_LF;
434
435                    // register the needed pseudo CSS
436                    if($order == '_first') {
437                        $output['first'] .= $section . ': html_' . $section . $order . ';' . DOKU_LF;
438                    } elseif($order == '_even') {
439                        $output['page'] .= 'even-' . $section . '-name: html_' . $section . $order . ';' . DOKU_LF;
440                    } elseif($order == '_odd') {
441                        $output['page'] .= 'odd-' . $section . '-name: html_' . $section . $order . ';' . DOKU_LF;
442                    } else {
443                        $output['page'] .= $section . ': html_' . $section . $order . ';' . DOKU_LF;
444                    }
445                }
446            }
447        }
448
449        // prepare replacements
450        $replace = array(
451            '@PAGE@'    => '{PAGENO}',
452            '@PAGES@'   => '{nbpg}', //see also $mpdf->pagenumSuffix = ' / '
453            '@TITLE@'   => hsc($title),
454            '@WIKI@'    => $conf['title'],
455            '@WIKIURL@' => DOKU_URL,
456            '@DATE@'    => dformat(time()),
457            '@BASE@'    => DOKU_BASE,
458            '@TPLBASE@' => DOKU_BASE . 'lib/plugins/dw2pdf/tpl/' . $this->tpl . '/'
459        );
460
461        // set HTML element
462        $html = str_replace(array_keys($replace), array_values($replace), $html);
463        //TODO For bookcreator $ID (= bookmanager page) makes no sense
464        $output['html'] = $this->page_depend_replacements($html, $ID);
465
466        // cover page
467        $coverfile = DOKU_PLUGIN . 'dw2pdf/tpl/' . $this->tpl . '/cover.html';
468        if(file_exists($coverfile)) {
469            $output['cover'] = file_get_contents($coverfile);
470            $output['cover'] = str_replace(array_keys($replace), array_values($replace), $output['cover']);
471            $output['cover'] .= '<pagebreak />';
472        }
473
474        // cover page
475        $backfile = DOKU_PLUGIN . 'dw2pdf/tpl/' . $this->tpl . '/back.html';
476        if(file_exists($backfile)) {
477            $output['back'] = '<pagebreak />';
478            $output['back'] .= file_get_contents($backfile);
479            $output['back'] = str_replace(array_keys($replace), array_values($replace), $output['back']);
480        }
481
482        // citation box
483        $citationfile = DOKU_PLUGIN . 'dw2pdf/tpl/' . $this->tpl . '/citation.html';
484        if(file_exists($citationfile)) {
485            $output['cite'] = file_get_contents($citationfile);
486            $output['cite'] = str_replace(array_keys($replace), array_values($replace), $output['cite']);
487        }
488
489        return $output;
490    }
491
492    /**
493     * @param string $raw code with placeholders
494     * @param string $id  pageid
495     * @return string
496     */
497    protected function page_depend_replacements($raw, $id) {
498        global $REV;
499
500        // generate qr code for this page using google infographics api
501        $qr_code = '';
502        if($this->getConf('qrcodesize')) {
503            $url = urlencode(wl($id, '', '&', true));
504            $qr_code = '<img src="https://chart.googleapis.com/chart?chs=' .
505                $this->getConf('qrcodesize') . '&cht=qr&chl=' . $url . '" />';
506        }
507        // prepare replacements
508        $replace['@ID@']      = $id;
509        $replace['@UPDATE@']  = dformat(filemtime(wikiFN($id, $REV)));
510        $replace['@PAGEURL@'] = wl($id, ($REV) ? array('rev' => $REV) : false, true, "&");
511        $replace['@QRCODE@']  = $qr_code;
512
513        $content = str_replace(array_keys($replace), array_values($replace), $raw);
514
515        // @DATE(<date>[, <format>])@
516        $content = preg_replace_callback(
517            '/@DATE\((.*?)(?:,\s*(.*?))?\)@/',
518            array($this, 'replacedate'),
519            $content
520        );
521
522        return $content;
523    }
524
525
526    /**
527     * (callback) Replace date by request datestring
528     * e.g. '%m(30-11-1975)' is replaced by '11'
529     *
530     * @param array $match with [0]=>whole match, [1]=> first subpattern, [2] => second subpattern
531     * @return string
532     */
533    function replacedate($match) {
534        global $conf;
535        //no 2nd argument for default date format
536        if($match[2] == null) {
537            $match[2] = $conf['dformat'];
538        }
539        return strftime($match[2], strtotime($match[1]));
540    }
541
542
543    /**
544     * Load all the style sheets and apply the needed replacements
545     */
546    protected function load_css() {
547        global $conf;
548        //reusue the CSS dispatcher functions without triggering the main function
549        define('SIMPLE_TEST', 1);
550        require_once(DOKU_INC . 'lib/exe/css.php');
551
552        // prepare CSS files
553        $files = array_merge(
554            array(
555                DOKU_INC . 'lib/styles/screen.css'
556                    => DOKU_BASE . 'lib/styles/',
557                DOKU_INC . 'lib/styles/print.css'
558                    => DOKU_BASE . 'lib/styles/',
559            ),
560            css_pluginstyles('all'),
561            $this->css_pluginPDFstyles(),
562            array(
563                DOKU_PLUGIN . 'dw2pdf/conf/style.css'
564                    => DOKU_BASE . 'lib/plugins/dw2pdf/conf/',
565                DOKU_PLUGIN . 'dw2pdf/tpl/' . $this->tpl . '/style.css'
566                    => DOKU_BASE . 'lib/plugins/dw2pdf/tpl/' . $this->tpl . '/',
567                DOKU_PLUGIN . 'dw2pdf/conf/style.local.css'
568                    => DOKU_BASE . 'lib/plugins/dw2pdf/conf/',
569            )
570        );
571        $css = '';
572        foreach($files as $file => $location) {
573            $display = str_replace(fullpath(DOKU_INC), '', fullpath($file));
574            $css .= "\n/* XXXXXXXXX $display XXXXXXXXX */\n";
575            $css .= css_loadfile($file, $location);
576        }
577
578        if(function_exists('css_parseless')) {
579            // apply pattern replacements
580            $styleini = css_styleini($conf['template']);
581            $css = css_applystyle($css, $styleini['replacements']);
582
583            // parse less
584            $css = css_parseless($css);
585        } else {
586            // @deprecated 2013-12-19: fix backward compatibility
587            $css = css_applystyle($css, DOKU_INC . 'lib/tpl/' . $conf['template'] . '/');
588        }
589
590        return $css;
591    }
592
593    /**
594     * Returns a list of possible Plugin PDF Styles
595     *
596     * Checks for a pdf.css, falls back to print.css
597     *
598     * @author Andreas Gohr <andi@splitbrain.org>
599     */
600    protected function css_pluginPDFstyles() {
601        $list = array();
602        $plugins = plugin_list();
603
604        $usestyle = explode(',', $this->getConf('usestyles'));
605        foreach($plugins as $p) {
606            if(in_array($p, $usestyle)) {
607                $list[DOKU_PLUGIN . "$p/screen.css"] = DOKU_BASE . "lib/plugins/$p/";
608                $list[DOKU_PLUGIN . "$p/style.css"] = DOKU_BASE . "lib/plugins/$p/";
609            }
610
611            if(file_exists(DOKU_PLUGIN . "$p/pdf.css")) {
612                $list[DOKU_PLUGIN . "$p/pdf.css"] = DOKU_BASE . "lib/plugins/$p/";
613            } else {
614                $list[DOKU_PLUGIN . "$p/print.css"] = DOKU_BASE . "lib/plugins/$p/";
615            }
616        }
617        return $list;
618    }
619
620    /**
621     * Returns array of pages which will be included in the exported pdf
622     *
623     * @return array
624     */
625    public function getExportedPages() {
626        return $this->list;
627    }
628
629    /**
630     * usort callback to sort by file lastmodified time
631     */
632    public function _datesort($a, $b) {
633        if($b['rev'] < $a['rev']) return -1;
634        if($b['rev'] > $a['rev']) return 1;
635        return strcmp($b['id'], $a['id']);
636    }
637
638    /**
639     * usort callback to sort by page id
640     */
641    public function _pagenamesort($a, $b) {
642        if($a['id'] <= $b['id']) return -1;
643        if($a['id'] > $b['id']) return 1;
644        return 0;
645    }
646
647    /**
648     * Return settings read from:
649     *   1. url parameters
650     *   2. plugin config
651     *   3. global config
652     *
653     * @return array
654     */
655    protected function loadExportConfig() {
656        global $INPUT;
657        global $conf;
658
659        $this->exportConfig = array();
660
661        // decide on the paper setup from param or config
662        $this->exportConfig['pagesize'] = $INPUT->str('pagesize', $this->getConf('pagesize'), true);
663        $this->exportConfig['orientation'] = $INPUT->str('orientation', $this->getConf('orientation'), true);
664
665        $doublesided = $INPUT->bool('doublesided', (bool) $this->getConf('doublesided'));
666        $this->exportConfig['doublesided'] = $doublesided ? '1' : '0';
667
668        $hasToC = $INPUT->bool('toc', (bool) $this->getConf('toc'));
669        $levels = array();
670        if($hasToC) {
671            $toclevels = $INPUT->str('toclevels', $this->getConf('toclevels'), true);
672            list($top_input, $max_input) = explode('-', $toclevels, 2);
673            list($top_conf, $max_conf) = explode('-', $this->getConf('toclevels'), 2);
674            $bounds_input = array(
675                'top' => array(
676                    (int) $top_input,
677                    (int) $top_conf
678                ),
679                'max' => array(
680                    (int) $max_input,
681                    (int) $max_conf
682                )
683            );
684            $bounds = array(
685                'top' => $conf['toptoclevel'],
686                'max' => $conf['maxtoclevel']
687
688            );
689            foreach($bounds_input as $bound => $values) {
690                foreach($values as $value) {
691                    if($value > 0 && $value <= 5) {
692                        //stop at valid value and store
693                        $bounds[$bound] = $value;
694                        break;
695                    }
696                }
697            }
698
699            if($bounds['max'] < $bounds['top']) {
700                $bounds['max'] = $bounds['top'];
701            }
702
703            for($level = $bounds['top']; $level <= $bounds['max']; $level++) {
704                $levels["H$level"] = $level - 1;
705            }
706        }
707        $this->exportConfig['hasToC'] = $hasToC;
708        $this->exportConfig['levels'] = $levels;
709
710        $this->exportConfig['maxbookmarks'] = $INPUT->int('maxbookmarks', $this->getConf('maxbookmarks'), true);
711
712        $tplconf = $this->getConf('template');
713        $tpl = $INPUT->str('tpl', $tplconf, true);
714        if(!is_dir(DOKU_PLUGIN . 'dw2pdf/tpl/' . $tpl)) {
715            $tpl = $tplconf;
716        }
717        if(!$tpl){
718            $tpl = 'default';
719        }
720        $this->exportConfig['template'] = $tpl;
721
722        $this->exportConfig['isDebug'] = $conf['allowdebug'] && $INPUT->has('debughtml');
723    }
724
725    /**
726     * Returns requested config
727     *
728     * @param string $name
729     * @param mixed  $notset
730     * @return mixed|bool
731     */
732    public function getExportConfig($name, $notset = false) {
733        if ($this->exportConfig === null){
734            $this->loadExportConfig();
735        }
736
737        if(isset($this->exportConfig[$name])){
738            return $this->exportConfig[$name];
739        }else{
740            return $notset;
741        }
742    }
743
744    /**
745     * Add 'export pdf'-button to pagetools
746     *
747     * @param Doku_Event $event
748     * @param mixed      $param not defined
749     */
750    public function addbutton(Doku_Event $event, $param) {
751        global $ID, $REV;
752
753        if($this->getConf('showexportbutton') && $event->data['view'] == 'main') {
754            $params = array('do' => 'export_pdf');
755            if($REV) {
756                $params['rev'] = $REV;
757            }
758
759            // insert button at position before last (up to top)
760            $event->data['items'] = array_slice($event->data['items'], 0, -1, true) +
761                array('export_pdf' =>
762                          '<li>'
763                          . '<a href="' . wl($ID, $params) . '"  class="action export_pdf" rel="nofollow" title="' . $this->getLang('export_pdf_button') . '">'
764                          . '<span>' . $this->getLang('export_pdf_button') . '</span>'
765                          . '</a>'
766                          . '</li>'
767                ) +
768                array_slice($event->data['items'], -1, 1, true);
769        }
770    }
771}
772