xref: /plugin/include/helper.php (revision cc549663b05b92f7b85027680ce46dba51b3799a) 
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['inline']    = false;
44    }
45
46    /**
47     * Available methods for other plugins
48     */
49    function getMethods() {
50        $result = array();
51        $result[] = array(
52                'name'   => 'get_flags',
53                'desc'   => 'overrides standard values for showfooter and firstseconly settings',
54                'params' => array('flags' => 'array'),
55                );
56        return $result;
57    }
58
59    /**
60     * Overrides standard values for showfooter and firstseconly settings
61     */
62    function get_flags($setflags) {
63        // load defaults
64        $flags = array();
65        $flags = $this->defaults;
66        foreach ($setflags as $flag) {
67            switch ($flag) {
68                case 'footer':
69                    $flags['footer'] = 1;
70                    break;
71                case 'nofooter':
72                    $flags['footer'] = 0;
73                    break;
74                case 'firstseconly':
75                case 'firstsectiononly':
76                    $flags['firstsec'] = 1;
77                    break;
78                case 'fullpage':
79                    $flags['firstsec'] = 0;
80                    break;
81                case 'noheader':
82                    $flags['noheader'] = 1;
83                    break;
84                case 'editbtn':
85                case 'editbutton':
86                    $flags['editbtn'] = 1;
87                    break;
88                case 'noeditbtn':
89                case 'noeditbutton':
90                    $flags['editbtn'] = 0;
91                    break;
92                case 'permalink':
93                    $flags['permalink'] = 1;
94                    break;
95                case 'nopermalink':
96                    $flags['permalink'] = 0;
97                    break;
98                case 'redirect':
99                    $flags['redirect'] = 1;
100                    break;
101                case 'noredirect':
102                    $flags['redirect'] = 0;
103                    break;
104                case 'link':
105                    $flags['link'] = 1;
106                    break;
107                case 'nolink':
108                    $flags['link'] = 0;
109                    break;
110                case 'user':
111                    $flags['user'] = 1;
112                    break;
113                case 'nouser':
114                    $flags['user'] = 0;
115                    break;
116                case 'comments':
117                    $flags['comments'] = 1;
118                    break;
119                case 'nocomments':
120                    $flags['comments'] = 0;
121                    break;
122                case 'linkbacks':
123                    $flags['linkbacks'] = 1;
124                    break;
125                case 'nolinkbacks':
126                    $flags['linkbacks'] = 0;
127                    break;
128                case 'tags':
129                    $flags['tags'] = 1;
130                    break;
131                case 'notags':
132                    $flags['tags'] = 0;
133                    break;
134                case 'date':
135                    $flags['date'] = 1;
136                    break;
137                case 'nodate':
138                    $flags['date'] = 0;
139                    break;
140                case 'indent':
141                    $flags['indent'] = 1;
142                    break;
143                case 'noindent':
144                    $flags['indent'] = 0;
145                    break;
146                case 'linkonly':
147                    $flags['linkonly'] = 1;
148                    break;
149                case 'nolinkonly':
150                case 'include_content':
151                    $flags['linkonly'] = 0;
152                    break;
153                case 'inline':
154                    $flags['inline'] = 1;
155                    break;
156            }
157        }
158        // the include_content URL parameter overrides flags
159        if (isset($_REQUEST['include_content']))
160            $flags['linkonly'] = 0;
161        return $flags;
162    }
163
164    /**
165     * Returns the converted instructions of a give page/section
166     *
167     * @author Michael Klier <chi@chimeric.de>
168     * @author Michael Hamann <michael@content-space.de>
169     */
170    function _get_instructions($page, $sect, $mode, $lvl, $flags, $root_id = null) {
171        $key = ($sect) ? $page . '#' . $sect : $page;
172        $this->includes[$key] = true; // legacy code for keeping compatibility with other plugins
173
174        // keep compatibility with other plugins that don't know the $root_id parameter
175        if (is_null($root_id)) {
176            global $ID;
177            $root_id = $ID;
178        }
179
180        if ($flags['linkonly']) {
181            $ins = array(
182                array('p_open', array()),
183                array('internallink', array(':'.$key)),
184                array('p_close', array()),
185            );
186        } else {
187            if (page_exists($page)) {
188                global $ID;
189                $backupID = $ID;
190                $ID = $page; // Change the global $ID as otherwise plugins like the discussion plugin will save data for the wrong page
191                $ins = p_cached_instructions(wikiFN($page));
192                $ID = $backupID;
193            } else {
194                $ins = array();
195            }
196
197            $this->_convert_instructions($ins, $lvl, $page, $sect, $flags, $root_id);
198        }
199        return $ins;
200    }
201
202    /**
203     * Converts instructions of the included page
204     *
205     * The funcion iterates over the given list of instructions and generates
206     * an index of header and section indicies. It also removes document
207     * start/end instructions, converts links, and removes unwanted
208     * instructions like tags, comments, linkbacks.
209     *
210     * Later all header/section levels are convertet to match the current
211     * inclusion level.
212     *
213     * @author Michael Klier <chi@chimeric.de>
214     */
215    function _convert_instructions(&$ins, $lvl, $page, $sect, $flags, $root_id) {
216        global $conf;
217
218        // filter instructions if needed
219        if(!empty($sect)) {
220            $this->_get_section($ins, $sect);   // section required
221        }
222
223        if($flags['firstsec']) {
224            $this->_get_firstsec($ins, $page);  // only first section
225        }
226
227        $ns  = getNS($page);
228        $num = count($ins);
229
230        $conv_idx = array(); // conversion index
231        $lvl_max  = false;   // max level
232        $first_header = -1;
233        $no_header  = false;
234        $sect_title = false;
235
236        for($i=0; $i<$num; $i++) {
237            switch($ins[$i][0]) {
238                case 'document_start':
239                case 'document_end':
240                case 'section_edit':
241                    unset($ins[$i]);
242                    break;
243                case 'header':
244                    // get section title of first section
245                    if($sect && !$sect_title) {
246                        $sect_title = $ins[$i][1][0];
247                    }
248                    // check if we need to skip the first header
249                    if((!$no_header) && $flags['noheader']) {
250                        $no_header = true;
251                    }
252
253                    $conv_idx[] = $i;
254                    // get index of first header
255                    if($first_header == -1) $first_header = $i;
256                    // get max level of this instructions set
257                    if(!$lvl_max || ($ins[$i][1][1] < $lvl_max)) {
258                        $lvl_max = $ins[$i][1][1];
259                    }
260                    break;
261                case 'section_open':
262                    if ($flags['inline'])
263                        unset($ins[$i]);
264                    else
265                        $conv_idx[] = $i;
266                    break;
267                case 'section_close':
268                    if ($flags['inline'])
269                        unset($ins[$i]);
270                case 'internallink':
271                case 'internalmedia':
272                    // make sure parameters aren't touched
273                    $link_params = '';
274                    $link_id = $ins[$i][1][0];
275                    $link_parts = explode('?', $link_id, 2);
276                    if (count($link_parts) === 2) {
277                        $link_id = $link_parts[0];
278                        $link_params = $link_parts[1];
279                    }
280                    // resolve the id without cleaning it
281                    $link_id = resolve_id($ns, $link_id, false);
282                    // this id is internal (i.e. absolute) now, add ':' to make resolve_id work again
283                    if ($link_id{0} != ':') $link_id = ':'.$link_id;
284                    // restore parameters
285                    $ins[$i][1][0] = ($link_params != '') ? $link_id.'?'.$link_params : $link_id;
286                    break;
287                case 'plugin':
288                    // FIXME skip other plugins?
289                    switch($ins[$i][1][0]) {
290                        case 'tag_tag':                 // skip tags
291                        case 'discussion_comments':     // skip comments
292                        case 'linkback':                // skip linkbacks
293                        case 'data_entry':              // skip data plugin
294                        case 'meta':                    // skip meta plugin
295                            unset($ins[$i]);
296                            break;
297                        // adapt indentation level of nested includes
298                        case 'include_include':
299                            if (!$flags['inline'] && $flags['indent'])
300                                $ins[$i][1][1][4] += $lvl;
301                            break;
302                    }
303                    break;
304                default:
305                    break;
306            }
307        }
308
309        // calculate difference between header/section level and include level
310        $diff = 0;
311        if (!isset($lvl_max)) $lvl_max = 0; // if no level found in target, set to 0
312        $diff = $lvl - $lvl_max + 1;
313        if ($no_header) $diff -= 1;  // push up one level if "noheader"
314
315        // convert headers and set footer/permalink
316        $hdr_deleted      = false;
317        $has_permalink    = false;
318        $footer_lvl       = false;
319        $contains_secedit = false;
320        $section_close_at = false;
321        foreach($conv_idx as $idx) {
322            if($ins[$idx][0] == 'header') {
323                if ($section_close_at === false) {
324                    // store the index of the first heading (the begin of the first section)
325                    $section_close_at = $idx;
326                }
327
328                if($no_header && !$hdr_deleted) {
329                    unset ($ins[$idx]);
330                    $hdr_deleted = true;
331                    continue;
332                }
333
334                if($flags['indent']) {
335                    $lvl_new = (($ins[$idx][1][1] + $diff) > 5) ? 5 : ($ins[$idx][1][1] + $diff);
336                    $ins[$idx][1][1] = $lvl_new;
337                }
338
339                if($ins[$idx][1][1] <= $conf['maxseclevel'])
340                    $contains_secedit = true;
341
342                // set permalink
343                if($flags['link'] && !$has_permalink && ($idx == $first_header)) {
344                    $this->_permalink($ins[$idx], $page, $sect, $flags);
345                    $has_permalink = true;
346                }
347
348                // set footer level
349                if(!$footer_lvl && ($idx == $first_header) && !$no_header) {
350                    if($flags['indent']) {
351                        $footer_lvl = $lvl_new;
352                    } else {
353                        $footer_lvl = $lvl_max;
354                    }
355                }
356            } else {
357                // it's a section
358                if($flags['indent']) {
359                    $lvl_new = (($ins[$idx][1][0] + $diff) > 5) ? 5 : ($ins[$idx][1][0] + $diff);
360                    $ins[$idx][1][0] = $lvl_new;
361                }
362
363                // check if noheader is used and set the footer level to the first section
364                if($no_header && !$footer_lvl) {
365                    if($flags['indent']) {
366                        $footer_lvl = $lvl_new;
367                    } else {
368                        $footer_lvl = $lvl_max;
369                    }
370                }
371            }
372        }
373
374        // close last open section of the included page if there is any
375        if ($contains_secedit) {
376            array_push($ins, array('plugin', array('include_closelastsecedit', array())));
377        }
378
379        // add edit button
380        if($flags['editbtn']) {
381            $perm = auth_quickaclcheck($page);
382            $can_edit = page_exists($page) ? $perm >= AUTH_EDIT : $perm >= AUTH_CREATE;
383            if ($can_edit)
384                $this->_editbtn($ins, $page, $sect, $sect_title, ($flags['redirect'] ? $root_id : false));
385        }
386
387        // add footer
388        if($flags['footer']) {
389            $ins[] = $this->_footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id);
390        }
391
392        // wrap content at the beginning of the include that is not in a section in a section
393        if ($lvl > 0 && $section_close_at !== 0 && $flags['indent'] && !$flags['inline']) {
394            if ($section_close_at === false) {
395                $ins[] = array('section_close', array());
396                array_unshift($ins, array('section_open', array($lvl)));
397            } else {
398                $section_close_idx = array_search($section_close_at, array_keys($ins));
399                if ($section_close_idx > 0) {
400                    $before_ins = array_slice($ins, 0, $section_close_idx);
401                    $after_ins = array_slice($ins, $section_close_idx);
402                    $ins = array_merge($before_ins, array(array('section_close', array())), $after_ins);
403                    array_unshift($ins, array('section_open', array($lvl)));
404                }
405            }
406        }
407
408        // add instructions entry wrapper
409        array_unshift($ins, array('plugin', array('include_wrap', array('open', $page, $flags['redirect']))));
410        array_push($ins, array('plugin', array('include_wrap', array('close'))));
411
412        // close previous section if any and re-open after inclusion
413        if($lvl != 0 && $this->sec_close && !$flags['inline']) {
414            array_unshift($ins, array('section_close', array()));
415            $ins[] = array('section_open', array($lvl));
416        }
417    }
418
419    /**
420     * Appends instruction item for the include plugin footer
421     *
422     * @author Michael Klier <chi@chimeric.de>
423     */
424    function _footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id) {
425        $footer = array();
426        $footer[0] = 'plugin';
427        $footer[1] = array('include_footer', array($page, $sect, $sect_title, $flags, $root_id, $footer_lvl));
428        return $footer;
429    }
430
431    /**
432     * Appends instruction item for an edit button
433     *
434     * @author Michael Klier <chi@chimeric.de>
435     */
436    function _editbtn(&$ins, $page, $sect, $sect_title, $root_id) {
437        $editbtn = array();
438        $editbtn[0] = 'plugin';
439        $editbtn[1] = array('include_editbtn', array($page, $sect, $sect_title, $root_id));
440        $ins[] = $editbtn;
441    }
442
443    /**
444     * Convert instruction item for a permalink header
445     *
446     * @author Michael Klier <chi@chimeric.de>
447     */
448    function _permalink(&$ins, $page, $sect, $flags) {
449        $ins[0] = 'plugin';
450        $ins[1] = array('include_header', array($ins[1][0], $ins[1][1], $page, $sect, $flags));
451    }
452
453    /**
454     * Get a section including its subsections
455     *
456     * @author Michael Klier <chi@chimeric.de>
457     */
458    function _get_section(&$ins, $sect) {
459        $num = count($ins);
460        $offset = false;
461        $lvl    = false;
462        $end    = false;
463
464        $check = array(); // used for sectionID() in order to get the same ids as the xhtml renderer
465
466        for($i=0; $i<$num; $i++) {
467            if ($ins[$i][0] == 'header') {
468
469                // found the right header
470                if (sectionID($ins[$i][1][0], $check) == $sect) {
471                    $offset = $i;
472                    $lvl    = $ins[$i][1][1];
473                } elseif ($offset && $lvl && ($ins[$i][1][1] <= $lvl)) {
474                    $end = $i - $offset;
475                    break;
476                }
477            }
478        }
479        $offset = $offset ? $offset : 0;
480        $end = $end ? $end : ($num - 1);
481        if(is_array($ins)) {
482            $ins = array_slice($ins, $offset, $end);
483        }
484    }
485
486    /**
487     * Only display the first section of a page and a readmore link
488     *
489     * @author Michael Klier <chi@chimeric.de>
490     */
491    function _get_firstsec(&$ins, $page) {
492        $num = count($ins);
493        $first_sect = false;
494        for($i=0; $i<$num; $i++) {
495            if($ins[$i][0] == 'section_close') {
496                $first_sect = $i;
497            }
498            if(($first_sect) && ($ins[$i][0] == 'section_open')) {
499                $ins = array_slice($ins, 0, $first_sect);
500                $ins[] = array('p_open', array());
501                $ins[] = array('internallink', array($page, $this->getLang('readmore')));
502                $ins[] = array('p_close', array());
503                $ins[] = array('section_close', array());
504                return;
505            }
506        }
507    }
508
509    /**
510     * Gives a list of pages for a given include statement
511     *
512     * @author Michael Hamann <michael@content-space.de>
513     */
514    function _get_included_pages($mode, $page, $sect, $parent_id) {
515        global $conf;
516        $pages = array();
517        switch($mode) {
518        case 'namespace':
519            $ns    = str_replace(':', '/', cleanID($page));
520            search($pagearrays, $conf['datadir'], 'search_list', '', $ns);
521            if (is_array($pagearrays)) {
522                foreach ($pagearrays as $pagearray) {
523                    $pages[] = $pagearray['id'];
524                }
525            }
526            break;
527        case 'tagtopic':
528            if (!$this->taghelper)
529                $this->taghelper =& plugin_load('helper', 'tag');
530            if(!$this->taghelper) {
531                msg('You have to install the tag plugin to use this functionality!', -1);
532                return array();
533            }
534            $tag   = $page;
535            $sect  = '';
536            $pagearrays = $this->taghelper->getTopic('', null, $tag);
537            foreach ($pagearrays as $pagearray) {
538                $pages[] = $pagearray['id'];
539            }
540            break;
541        default:
542            $page = $this->_apply_macro($page);
543            resolve_pageid(getNS($parent_id), $page, $exists); // resolve shortcuts and clean ID
544            if (auth_quickaclcheck($page) >= AUTH_READ)
545                $pages[] = $page;
546        }
547
548        sort($pages);
549
550        $result = array();
551        foreach ($pages as $page) {
552            $perm = auth_quickaclcheck($page);
553            $exists = page_exists($page);
554            $result[] = array('id' => $page, 'exists' => $exists, 'can_edit' => ($perm >= AUTH_EDIT), 'parent_id' => $parent_id);
555        }
556        return $result;
557    }
558
559    /**
560     * This function generates the list of all included pages from a list of metadata
561     * instructions.
562     */
563    function _get_included_pages_from_meta_instructions($instructions) {
564        $pages = array();
565        foreach ($instructions as $instruction) {
566            extract($instruction);
567            $pages = array_merge($pages, $this->_get_included_pages($mode, $page, $sect, $parent_id));
568        }
569        return $pages;
570    }
571
572    /**
573     * Makes user or date dependent includes possible
574     */
575    function _apply_macro($id) {
576        global $INFO;
577        global $auth;
578
579        // if we don't have an auth object, do nothing
580        if (!$auth) return $id;
581
582        $user     = $_SERVER['REMOTE_USER'];
583        $group    = $INFO['userinfo']['grps'][0];
584
585        $replace = array(
586                '@USER@'  => cleanID($user),
587                '@NAME@'  => cleanID($INFO['userinfo']['name']),
588                '@GROUP@' => cleanID($group),
589                '@YEAR@'  => date('Y'),
590                '@MONTH@' => date('m'),
591                '@DAY@'   => date('d'),
592                );
593        return str_replace(array_keys($replace), array_values($replace), $id);
594    }
595}
596// vim:ts=4:sw=4:et:
597