xref: /plugin/include/helper.php (revision 89c58f89e50c66d3b80f06a24a08bb1d32c30de1) 
1<?php
2/**
3 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
4 * @author     Esther Brunner <wikidesign@gmail.com>
5 * @author     Christopher Smith <chris@jalakai.co.uk>
6 * @author     Gina Häußge, Michael Klier <dokuwiki@chimeric.de>
7 */
8
9// must be run within Dokuwiki
10if (!defined('DOKU_INC')) die();
11
12if (!defined('DOKU_LF')) define('DOKU_LF', "\n");
13if (!defined('DOKU_TAB')) define('DOKU_TAB', "\t");
14if (!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN', DOKU_INC.'lib/plugins/');
15
16require_once(DOKU_INC.'inc/search.php');
17
18class helper_plugin_include extends DokuWiki_Plugin { // DokuWiki_Helper_Plugin
19
20    var $defaults  = array();
21    var $sec_close = true;
22    var $taghelper = null;
23    var $includes  = array(); // deprecated - compatibility code for the blog plugin
24
25    /**
26     * Constructor loads default config settings once
27     */
28    function helper_plugin_include() {
29        $this->defaults['firstsec']  = $this->getConf('firstseconly');
30        $this->defaults['editbtn']   = $this->getConf('showeditbtn');
31        $this->defaults['taglogos']  = $this->getConf('showtaglogos');
32        $this->defaults['footer']    = $this->getConf('showfooter');
33        $this->defaults['redirect']  = $this->getConf('doredirect');
34        $this->defaults['date']      = $this->getConf('showdate');
35        $this->defaults['user']      = $this->getConf('showuser');
36        $this->defaults['comments']  = $this->getConf('showcomments');
37        $this->defaults['linkbacks'] = $this->getConf('showlinkbacks');
38        $this->defaults['tags']      = $this->getConf('showtags');
39        $this->defaults['link']      = $this->getConf('showlink');
40        $this->defaults['permalink'] = $this->getConf('showpermalink');
41        $this->defaults['indent']    = $this->getConf('doindent');
42        $this->defaults['linkonly']  = $this->getConf('linkonly');
43        $this->defaults['title']     = $this->getConf('title');
44        $this->defaults['pageexists']  = $this->getConf('pageexists');
45        $this->defaults['parlink']   = $this->getConf('parlink');
46        $this->defaults['inline']    = false;
47    }
48
49    /**
50     * Available methods for other plugins
51     */
52    function getMethods() {
53        $result = array();
54        $result[] = array(
55                'name'   => 'get_flags',
56                'desc'   => 'overrides standard values for showfooter and firstseconly settings',
57                'params' => array('flags' => 'array'),
58                );
59        return $result;
60    }
61
62    /**
63     * Overrides standard values for showfooter and firstseconly settings
64     */
65    function get_flags($setflags) {
66        // load defaults
67        $flags = array();
68        $flags = $this->defaults;
69        foreach ($setflags as $flag) {
70            switch ($flag) {
71                case 'footer':
72                    $flags['footer'] = 1;
73                    break;
74                case 'nofooter':
75                    $flags['footer'] = 0;
76                    break;
77                case 'firstseconly':
78                case 'firstsectiononly':
79                    $flags['firstsec'] = 1;
80                    break;
81                case 'fullpage':
82                    $flags['firstsec'] = 0;
83                    break;
84                case 'noheader':
85                    $flags['noheader'] = 1;
86                    break;
87                case 'editbtn':
88                case 'editbutton':
89                    $flags['editbtn'] = 1;
90                    break;
91                case 'noeditbtn':
92                case 'noeditbutton':
93                    $flags['editbtn'] = 0;
94                    break;
95                case 'permalink':
96                    $flags['permalink'] = 1;
97                    break;
98                case 'nopermalink':
99                    $flags['permalink'] = 0;
100                    break;
101                case 'redirect':
102                    $flags['redirect'] = 1;
103                    break;
104                case 'noredirect':
105                    $flags['redirect'] = 0;
106                    break;
107                case 'link':
108                    $flags['link'] = 1;
109                    break;
110                case 'nolink':
111                    $flags['link'] = 0;
112                    break;
113                case 'user':
114                    $flags['user'] = 1;
115                    break;
116                case 'nouser':
117                    $flags['user'] = 0;
118                    break;
119                case 'comments':
120                    $flags['comments'] = 1;
121                    break;
122                case 'nocomments':
123                    $flags['comments'] = 0;
124                    break;
125                case 'linkbacks':
126                    $flags['linkbacks'] = 1;
127                    break;
128                case 'nolinkbacks':
129                    $flags['linkbacks'] = 0;
130                    break;
131                case 'tags':
132                    $flags['tags'] = 1;
133                    break;
134                case 'notags':
135                    $flags['tags'] = 0;
136                    break;
137                case 'date':
138                    $flags['date'] = 1;
139                    break;
140                case 'nodate':
141                    $flags['date'] = 0;
142                    break;
143                case 'indent':
144                    $flags['indent'] = 1;
145                    break;
146                case 'noindent':
147                    $flags['indent'] = 0;
148                    break;
149                case 'linkonly':
150                    $flags['linkonly'] = 1;
151                    break;
152                case 'nolinkonly':
153                case 'include_content':
154                    $flags['linkonly'] = 0;
155                    break;
156                case 'inline':
157                    $flags['inline'] = 1;
158                    break;
159                case 'title':
160                    $flags['title'] = 1;
161                    break;
162                case 'pageexists':
163                    $flags['pageexists'] = 1;
164                    break;
165                case 'existlink':
166                    $flags['pageexists'] = 1;
167                    $flags['linkonly'] = 1;
168                    break;
169                case 'noparlink':
170                    $flags['parlink'] = 0;
171                    break;
172            }
173        }
174        // the include_content URL parameter overrides flags
175        if (isset($_REQUEST['include_content']))
176            $flags['linkonly'] = 0;
177        return $flags;
178    }
179
180    /**
181     * Returns the converted instructions of a give page/section
182     *
183     * @author Michael Klier <chi@chimeric.de>
184     * @author Michael Hamann <michael@content-space.de>
185     */
186    function _get_instructions($page, $sect, $mode, $lvl, $flags, $root_id = null) {
187        $key = ($sect) ? $page . '#' . $sect : $page;
188        $this->includes[$key] = true; // legacy code for keeping compatibility with other plugins
189
190        // keep compatibility with other plugins that don't know the $root_id parameter
191        if (is_null($root_id)) {
192            global $ID;
193            $root_id = $ID;
194        }
195
196        if ($flags['linkonly']) {
197            if (page_exists($page) || $flags['pageexists']  == 0) {
198                $title = '';
199                if ($flags['title'])
200                    $title = p_get_first_heading($page);
201                if($flags['parlink']) {
202                    $ins = array(
203                        array('p_open', array()),
204                        array('internallink', array(':'.$key, $title)),
205                        array('p_close', array()),
206                    );
207                } else {
208                    $ins = array(array('internallink', array(':'.$key,$title)));
209                }
210            }else {
211                $ins = array();
212            }
213        } else {
214            if (page_exists($page)) {
215                global $ID;
216                $backupID = $ID;
217                $ID = $page; // Change the global $ID as otherwise plugins like the discussion plugin will save data for the wrong page
218                $ins = p_cached_instructions(wikiFN($page));
219                $ID = $backupID;
220            } else {
221                $ins = array();
222            }
223
224            $this->_convert_instructions($ins, $lvl, $page, $sect, $flags, $root_id);
225        }
226        return $ins;
227    }
228
229    /**
230     * Converts instructions of the included page
231     *
232     * The funcion iterates over the given list of instructions and generates
233     * an index of header and section indicies. It also removes document
234     * start/end instructions, converts links, and removes unwanted
235     * instructions like tags, comments, linkbacks.
236     *
237     * Later all header/section levels are convertet to match the current
238     * inclusion level.
239     *
240     * @author Michael Klier <chi@chimeric.de>
241     */
242    function _convert_instructions(&$ins, $lvl, $page, $sect, $flags, $root_id) {
243        global $conf;
244
245        // filter instructions if needed
246        if(!empty($sect)) {
247            $this->_get_section($ins, $sect);   // section required
248        }
249
250        if($flags['firstsec']) {
251            $this->_get_firstsec($ins, $page);  // only first section
252        }
253
254        $ns  = getNS($page);
255        $num = count($ins);
256
257        $conv_idx = array(); // conversion index
258        $lvl_max  = false;   // max level
259        $first_header = -1;
260        $no_header  = false;
261        $sect_title = false;
262
263        for($i=0; $i<$num; $i++) {
264            switch($ins[$i][0]) {
265                case 'document_start':
266                case 'document_end':
267                case 'section_edit':
268                    unset($ins[$i]);
269                    break;
270                case 'header':
271                    // get section title of first section
272                    if($sect && !$sect_title) {
273                        $sect_title = $ins[$i][1][0];
274                    }
275                    // check if we need to skip the first header
276                    if((!$no_header) && $flags['noheader']) {
277                        $no_header = true;
278                    }
279
280                    $conv_idx[] = $i;
281                    // get index of first header
282                    if($first_header == -1) $first_header = $i;
283                    // get max level of this instructions set
284                    if(!$lvl_max || ($ins[$i][1][1] < $lvl_max)) {
285                        $lvl_max = $ins[$i][1][1];
286                    }
287                    break;
288                case 'section_open':
289                    if ($flags['inline'])
290                        unset($ins[$i]);
291                    else
292                        $conv_idx[] = $i;
293                    break;
294                case 'section_close':
295                    if ($flags['inline'])
296                        unset($ins[$i]);
297                case 'internallink':
298                case 'internalmedia':
299                    // make sure parameters aren't touched
300                    $link_params = '';
301                    $link_id = $ins[$i][1][0];
302                    $link_parts = explode('?', $link_id, 2);
303                    if (count($link_parts) === 2) {
304                        $link_id = $link_parts[0];
305                        $link_params = $link_parts[1];
306                    }
307                    // resolve the id without cleaning it
308                    $link_id = resolve_id($ns, $link_id, false);
309                    // this id is internal (i.e. absolute) now, add ':' to make resolve_id work again
310                    if ($link_id{0} != ':') $link_id = ':'.$link_id;
311                    // restore parameters
312                    $ins[$i][1][0] = ($link_params != '') ? $link_id.'?'.$link_params : $link_id;
313                    break;
314                case 'plugin':
315                    // FIXME skip other plugins?
316                    switch($ins[$i][1][0]) {
317                        case 'tag_tag':                 // skip tags
318                        case 'discussion_comments':     // skip comments
319                        case 'linkback':                // skip linkbacks
320                        case 'data_entry':              // skip data plugin
321                        case 'meta':                    // skip meta plugin
322                            unset($ins[$i]);
323                            break;
324                        // adapt indentation level of nested includes
325                        case 'include_include':
326                            if (!$flags['inline'] && $flags['indent'])
327                                $ins[$i][1][1][4] += $lvl;
328                            break;
329                    }
330                    break;
331                default:
332                    break;
333            }
334        }
335
336        // calculate difference between header/section level and include level
337        $diff = 0;
338        if (!isset($lvl_max)) $lvl_max = 0; // if no level found in target, set to 0
339        $diff = $lvl - $lvl_max + 1;
340        if ($no_header) $diff -= 1;  // push up one level if "noheader"
341
342        // convert headers and set footer/permalink
343        $hdr_deleted      = false;
344        $has_permalink    = false;
345        $footer_lvl       = false;
346        $contains_secedit = false;
347        $section_close_at = false;
348        foreach($conv_idx as $idx) {
349            if($ins[$idx][0] == 'header') {
350                if ($section_close_at === false) {
351                    // store the index of the first heading (the begin of the first section)
352                    $section_close_at = $idx;
353                }
354
355                if($no_header && !$hdr_deleted) {
356                    unset ($ins[$idx]);
357                    $hdr_deleted = true;
358                    continue;
359                }
360
361                if($flags['indent']) {
362                    $lvl_new = (($ins[$idx][1][1] + $diff) > 5) ? 5 : ($ins[$idx][1][1] + $diff);
363                    $ins[$idx][1][1] = $lvl_new;
364                }
365
366                if($ins[$idx][1][1] <= $conf['maxseclevel'])
367                    $contains_secedit = true;
368
369                // set permalink
370                if($flags['link'] && !$has_permalink && ($idx == $first_header)) {
371                    $this->_permalink($ins[$idx], $page, $sect, $flags);
372                    $has_permalink = true;
373                }
374
375                // set footer level
376                if(!$footer_lvl && ($idx == $first_header) && !$no_header) {
377                    if($flags['indent']) {
378                        $footer_lvl = $lvl_new;
379                    } else {
380                        $footer_lvl = $lvl_max;
381                    }
382                }
383            } else {
384                // it's a section
385                if($flags['indent']) {
386                    $lvl_new = (($ins[$idx][1][0] + $diff) > 5) ? 5 : ($ins[$idx][1][0] + $diff);
387                    $ins[$idx][1][0] = $lvl_new;
388                }
389
390                // check if noheader is used and set the footer level to the first section
391                if($no_header && !$footer_lvl) {
392                    if($flags['indent']) {
393                        $footer_lvl = $lvl_new;
394                    } else {
395                        $footer_lvl = $lvl_max;
396                    }
397                }
398            }
399        }
400
401        // close last open section of the included page if there is any
402        if ($contains_secedit) {
403            array_push($ins, array('plugin', array('include_closelastsecedit', array())));
404        }
405
406        // add edit button
407        if($flags['editbtn']) {
408            $this->_editbtn($ins, $page, $sect, $sect_title, ($flags['redirect'] ? $root_id : false));
409        }
410
411        // add footer
412        if($flags['footer']) {
413            $ins[] = $this->_footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id);
414        }
415
416        // wrap content at the beginning of the include that is not in a section in a section
417        if ($lvl > 0 && $section_close_at !== 0 && $flags['indent'] && !$flags['inline']) {
418            if ($section_close_at === false) {
419                $ins[] = array('section_close', array());
420                array_unshift($ins, array('section_open', array($lvl)));
421            } else {
422                $section_close_idx = array_search($section_close_at, array_keys($ins));
423                if ($section_close_idx > 0) {
424                    $before_ins = array_slice($ins, 0, $section_close_idx);
425                    $after_ins = array_slice($ins, $section_close_idx);
426                    $ins = array_merge($before_ins, array(array('section_close', array())), $after_ins);
427                    array_unshift($ins, array('section_open', array($lvl)));
428                }
429            }
430        }
431
432        // add instructions entry wrapper
433        array_unshift($ins, array('plugin', array('include_wrap', array('open', $page, $flags['redirect']))));
434        array_push($ins, array('plugin', array('include_wrap', array('close'))));
435
436        // close previous section if any and re-open after inclusion
437        if($lvl != 0 && $this->sec_close && !$flags['inline']) {
438            array_unshift($ins, array('section_close', array()));
439            $ins[] = array('section_open', array($lvl));
440        }
441    }
442
443    /**
444     * Appends instruction item for the include plugin footer
445     *
446     * @author Michael Klier <chi@chimeric.de>
447     */
448    function _footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id) {
449        $footer = array();
450        $footer[0] = 'plugin';
451        $footer[1] = array('include_footer', array($page, $sect, $sect_title, $flags, $root_id, $footer_lvl));
452        return $footer;
453    }
454
455    /**
456     * Appends instruction item for an edit button
457     *
458     * @author Michael Klier <chi@chimeric.de>
459     */
460    function _editbtn(&$ins, $page, $sect, $sect_title, $root_id) {
461        $title = ($sect) ? $sect_title : $page;
462        $editbtn = array();
463        $editbtn[0] = 'plugin';
464        $editbtn[1] = array('include_editbtn', array($title));
465        $ins[] = $editbtn;
466    }
467
468    /**
469     * Convert instruction item for a permalink header
470     *
471     * @author Michael Klier <chi@chimeric.de>
472     */
473    function _permalink(&$ins, $page, $sect, $flags) {
474        $ins[0] = 'plugin';
475        $ins[1] = array('include_header', array($ins[1][0], $ins[1][1], $page, $sect, $flags));
476    }
477
478    /**
479     * Get a section including its subsections
480     *
481     * @author Michael Klier <chi@chimeric.de>
482     */
483    function _get_section(&$ins, $sect) {
484        $num = count($ins);
485        $offset = false;
486        $lvl    = false;
487        $end    = false;
488
489        $check = array(); // used for sectionID() in order to get the same ids as the xhtml renderer
490
491        for($i=0; $i<$num; $i++) {
492            if ($ins[$i][0] == 'header') {
493
494                // found the right header
495                if (sectionID($ins[$i][1][0], $check) == $sect) {
496                    $offset = $i;
497                    $lvl    = $ins[$i][1][1];
498                } elseif ($offset && $lvl && ($ins[$i][1][1] <= $lvl)) {
499                    $end = $i - $offset;
500                    break;
501                }
502            }
503        }
504        $offset = $offset ? $offset : 0;
505        $end = $end ? $end : ($num - 1);
506        if(is_array($ins)) {
507            $ins = array_slice($ins, $offset, $end);
508        }
509    }
510
511    /**
512     * Only display the first section of a page and a readmore link
513     *
514     * @author Michael Klier <chi@chimeric.de>
515     */
516    function _get_firstsec(&$ins, $page) {
517        $num = count($ins);
518        $first_sect = false;
519        for($i=0; $i<$num; $i++) {
520            if($ins[$i][0] == 'section_close') {
521                $first_sect = $i;
522            }
523            // only truncate the content and add the read more link when there is really
524            // more than that first section
525            if(($first_sect) && ($ins[$i][0] == 'section_open')) {
526                $ins = array_slice($ins, 0, $first_sect);
527                $ins[] = array('plugin', array('include_readmore', array($page)));
528                $ins[] = array('section_close', array());
529                return;
530            }
531        }
532    }
533
534    /**
535     * Gives a list of pages for a given include statement
536     *
537     * @author Michael Hamann <michael@content-space.de>
538     */
539    function _get_included_pages($mode, $page, $sect, $parent_id) {
540        global $conf;
541        $pages = array();
542        switch($mode) {
543        case 'namespace':
544            $ns    = str_replace(':', '/', cleanID($page));
545            search($pagearrays, $conf['datadir'], 'search_list', '', $ns);
546            if (is_array($pagearrays)) {
547                foreach ($pagearrays as $pagearray) {
548                    $pages[] = $pagearray['id'];
549                }
550            }
551            break;
552        case 'tagtopic':
553            if (!$this->taghelper)
554                $this->taghelper =& plugin_load('helper', 'tag');
555            if(!$this->taghelper) {
556                msg('You have to install the tag plugin to use this functionality!', -1);
557                return array();
558            }
559            $tag   = $page;
560            $sect  = '';
561            $pagearrays = $this->taghelper->getTopic('', null, $tag);
562            foreach ($pagearrays as $pagearray) {
563                $pages[] = $pagearray['id'];
564            }
565            break;
566        default:
567            $page = $this->_apply_macro($page);
568            resolve_pageid(getNS($parent_id), $page, $exists); // resolve shortcuts and clean ID
569            if (auth_quickaclcheck($page) >= AUTH_READ)
570                $pages[] = $page;
571        }
572
573        sort($pages);
574
575        $result = array();
576        foreach ($pages as $page) {
577            $exists = page_exists($page);
578            $result[] = array('id' => $page, 'exists' => $exists, 'parent_id' => $parent_id);
579        }
580        return $result;
581    }
582
583    /**
584     * This function generates the list of all included pages from a list of metadata
585     * instructions.
586     */
587    function _get_included_pages_from_meta_instructions($instructions) {
588        $pages = array();
589        foreach ($instructions as $instruction) {
590            extract($instruction);
591            $pages = array_merge($pages, $this->_get_included_pages($mode, $page, $sect, $parent_id));
592        }
593        return $pages;
594    }
595
596    /**
597     * Makes user or date dependent includes possible
598     */
599    function _apply_macro($id) {
600        global $INFO;
601        global $auth;
602
603        // if we don't have an auth object, do nothing
604        if (!$auth) return $id;
605
606        $user     = $_SERVER['REMOTE_USER'];
607        $group    = $INFO['userinfo']['grps'][0];
608
609        $time_stamp = time();
610        if(preg_match('/@DATE(\w+)@/',$id,$matches)) {
611            switch($matches[1]) {
612            case 'PMONTH':
613                $time_stamp = strtotime("-1 month");
614                break;
615            case 'NMONTH':
616                $time_stamp = strtotime("+1 month");
617                break;
618            case 'NWEEK':
619                $time_stamp = strtotime("+1 week");
620                break;
621            case 'PWEEK':
622                $time_stamp = strtotime("-1 week");
623                break;
624            case 'TOMORROW':
625                $time_stamp = strtotime("+1 day");
626                break;
627            case 'YESTERDAY':
628                $time_stamp = strtotime("-1 day");
629                break;
630            case 'NYEAR':
631                $time_stamp = strtotime("+1 year");
632                break;
633            case 'PYEAR':
634                $time_stamp = strtotime("-1 year");
635                break;
636            }
637            $id = preg_replace('/@DATE(\w+)@/','', $id);
638        }
639
640        $replace = array(
641                '@USER@'  => cleanID($user),
642                '@NAME@'  => cleanID($INFO['userinfo']['name']),
643                '@GROUP@' => cleanID($group),
644                '@YEAR@'  => date('Y',$time_stamp),
645                '@MONTH@' => date('m',$time_stamp),
646                '@WEEK@' => date('W',$time_stamp),
647                '@DAY@'   => date('d',$time_stamp),
648                '@YEARPMONTH@' => date('Ym',strtotime("-1 month")),
649                '@PMONTH@' => date('m',strtotime("-1 month")),
650                '@NMONTH@' => date('m',strtotime("+1 month")),
651                '@YEARNMONTH@' => date('Ym',strtotime("+1 month")),
652                '@YEARPWEEK@' => date('YW',strtotime("-1 week")),
653                '@PWEEK@' => date('W',strtotime("-1 week")),
654                '@NWEEK@' => date('W',strtotime("+1 week")),
655                '@YEARNWEEK@' => date('YW',strtotime("+1 week")),
656                );
657        return str_replace(array_keys($replace), array_values($replace), $id);
658    }
659}
660// vim:ts=4:sw=4:et:
661