xref: /dokuwiki/inc/Action/Export.php (revision 7d34963b3e75ea04c63ec066a6b7a692e123cb53) 
1<?php
2
3namespace dokuwiki\Action;
4
5use dokuwiki\Action\Exception\ActionAbort;
6use dokuwiki\Extension\Event;
7
8/**
9 * Class Export
10 *
11 * Handle exporting by calling the appropriate renderer
12 *
13 * @package dokuwiki\Action
14 */
15class Export extends AbstractAction
16{
17
18    /** @inheritdoc */
19    public function minimumPermission()
20    {
21        return AUTH_READ;
22    }
23
24    /**
25     * Export a wiki page for various formats
26     *
27     * Triggers ACTION_EXPORT_POSTPROCESS
28     *
29     *  Event data:
30     *    data['id']      -- page id
31     *    data['mode']    -- requested export mode
32     *    data['headers'] -- export headers
33     *    data['output']  -- export output
34     *
35     * @author Andreas Gohr <andi@splitbrain.org>
36     * @author Michael Klier <chi@chimeric.de>
37     * @inheritdoc
38     */
39    public function preProcess()
40    {
41        global $ID;
42        global $REV;
43        global $conf;
44        global $lang;
45
46        $pre = '';
47        $post = '';
48        $headers = [];
49
50        // search engines: never cache exported docs! (Google only currently)
51        $headers['X-Robots-Tag'] = 'noindex';
52
53        $mode = substr($this->actionname, 7);
54        switch ($mode) {
55            case 'raw':
56                $headers['Content-Type'] = 'text/plain; charset=utf-8';
57                $headers['Content-Disposition'] = 'attachment; filename=' . noNS($ID) . '.txt';
58                $output = rawWiki($ID, $REV);
59                break;
60            case 'xhtml':
61                $pre .= '<!DOCTYPE html>' . DOKU_LF;
62                $pre .= '<html lang="' . $conf['lang'] . '" dir="' . $lang['direction'] . '">' . DOKU_LF;
63                $pre .= '<head>' . DOKU_LF;
64                $pre .= '  <meta charset="utf-8" />' . DOKU_LF; // FIXME improve wrapper
65                $pre .= '  <title>' . $ID . '</title>' . DOKU_LF;
66
67                // get metaheaders
68                ob_start();
69                tpl_metaheaders();
70                $pre .= ob_get_clean();
71
72                $pre .= '</head>' . DOKU_LF;
73                $pre .= '<body>' . DOKU_LF;
74                $pre .= '<div class="dokuwiki export">' . DOKU_LF;
75
76                // get toc
77                $pre .= tpl_toc(true);
78
79                $headers['Content-Type'] = 'text/html; charset=utf-8';
80                $output = p_wiki_xhtml($ID, $REV, false);
81
82                $post .= '</div>' . DOKU_LF;
83                $post .= '</body>' . DOKU_LF;
84                $post .= '</html>' . DOKU_LF;
85                break;
86            case 'xhtmlbody':
87                $headers['Content-Type'] = 'text/html; charset=utf-8';
88                $output = p_wiki_xhtml($ID, $REV, false);
89                break;
90            default:
91                $output = p_cached_output(wikiFN($ID, $REV), $mode, $ID);
92                $headers = p_get_metadata($ID, "format $mode");
93                break;
94        }
95
96        // prepare event data
97        $data = [];
98        $data['id'] = $ID;
99        $data['mode'] = $mode;
100        $data['headers'] = $headers;
101        $data['output'] =& $output;
102
103        Event::createAndTrigger('ACTION_EXPORT_POSTPROCESS', $data);
104
105        if (!empty($data['output'])) {
106            if (is_array($data['headers'])) foreach ($data['headers'] as $key => $val) {
107                header("$key: $val");
108            }
109            print $pre . $data['output'] . $post;
110            exit;
111        }
112
113        throw new ActionAbort();
114    }
115}
116