xref: /plugin/include/helper.php (revision 1eec08a3651dc18bf95ac0a7566b46ec6ecdac92) 
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 $includes     = array();
21    var $hasparts     = array();
22    var $toplevel_id  = NULL;
23    var $toplevel     = 0;
24    var $defaults     = array();
25    var $include_key     = '';
26
27    /**
28     * Constructor loads default config settings once
29     */
30    function helper_plugin_include() {
31        $this->defaults['firstsec']  = $this->getConf('firstseconly');
32        $this->defaults['editbtn']   = $this->getConf('showeditbtn');
33        $this->defaults['taglogos']  = $this->getConf('showtaglogos');
34        $this->defaults['footer']    = $this->getConf('showfooter');
35        $this->defaults['redirect']  = $this->getConf('doredirect');
36        $this->defaults['date']      = $this->getConf('showdate');
37        $this->defaults['user']      = $this->getConf('showuser');
38        $this->defaults['comments']  = $this->getConf('showcomments');
39        $this->defaults['linkbacks'] = $this->getConf('showlinkbacks');
40        $this->defaults['tags']      = $this->getConf('showtags');
41        $this->defaults['link']      = $this->getConf('showlink');
42        $this->defaults['permalink'] = $this->getConf('showpermalink');
43        $this->defaults['indent']    = $this->getConf('doindent');
44    }
45
46    function getInfo() {
47        return array(
48                'author' => 'Gina Häußge, Michael Klier, Esther Brunner',
49                'email'  => 'dokuwiki@chimeric.de',
50                'date'   => @file_get_contents(DOKU_PLUGIN . 'blog/VERSION'),
51                'name'   => 'Include Plugin (helper class)',
52                'desc'   => 'Functions to include another page in a wiki page',
53                'url'    => 'http://dokuwiki.org/plugin:include',
54                );
55    }
56
57    /**
58     * Available methods for other plugins
59     */
60    function getMethods() {
61        $result = array();
62        $result[] = array(
63                'name'   => 'get_flags',
64                'desc'   => 'overrides standard values for showfooter and firstseconly settings',
65                'params' => array('flags' => 'array'),
66                );
67        return $result;
68    }
69
70    /**
71     * Overrides standard values for showfooter and firstseconly settings
72     */
73    function get_flags($setflags) {
74        // load defaults
75        $flags = array();
76        $flags = $this->defaults;
77        foreach ($setflags as $flag) {
78            switch ($flag) {
79                case 'footer':
80                    $flags['footer'] = 1;
81                    break;
82                case 'nofooter':
83                    $flags['footer'] = 0;
84                    break;
85                case 'firstseconly':
86                case 'firstsectiononly':
87                    $flags['firstsec'] = 1;
88                    break;
89                case 'fullpage':
90                    $flags['firstsec'] = 0;
91                    break;
92                case 'noheader':
93                    $flags['noheader'] = 1;
94                    break;
95                case 'editbtn':
96                case 'editbutton':
97                    $flags['editbtn'] = 1;
98                    break;
99                case 'noeditbtn':
100                case 'noeditbutton':
101                    $flags['editbtn'] = 0;
102                    break;
103                case 'permalink':
104                    $flags['permalink'] = 1;
105                    break;
106                case 'nopermalink':
107                    $flags['permalink'] = 0;
108                    break;
109                case 'redirect':
110                    $flags['redirect'] = 1;
111                    break;
112                case 'noredirect':
113                    $flags['redirect'] = 0;
114                    break;
115                case 'link':
116                    $flags['link'] = 1;
117                    break;
118                case 'nolink':
119                    $flags['link'] = 0;
120                    break;
121                case 'user':
122                    $flags['user'] = 1;
123                    break;
124                case 'nouser':
125                    $flags['user'] = 0;
126                    break;
127                case 'comments':
128                    $flags['comments'] = 1;
129                    break;
130                case 'nocomments':
131                    $flags['comments'] = 0;
132                    break;
133                case 'linkbacks':
134                    $flags['linkbacks'] = 1;
135                    break;
136                case 'nolinkbacks':
137                    $flags['linkbacks'] = 0;
138                    break;
139                case 'tags':
140                    $flags['tags'] = 1;
141                    break;
142                case 'notags':
143                    $flags['tags'] = 0;
144                    break;
145                case 'date':
146                    $flags['date'] = 1;
147                    break;
148                case 'nodate':
149                    $flags['date'] = 0;
150                    break;
151                case 'indent':
152                    $flags['indent'] = 1;
153                    break;
154                case 'noindent':
155                    $flags['indent'] = 0;
156                    break;
157            }
158        }
159        return $flags;
160    }
161
162    /**
163     * Parses the instructions list of the page which contains the includes
164     *
165     * @author Michael Klier <chi@chimeric.de>
166     */
167    function parse_instructions($id, &$ins) {
168        global $conf;
169        global $INFO;
170
171        $num = count($ins);
172
173        $lvl      = false;
174        $prev_lvl = false;
175        $mode     = '';
176        $page     = '';
177        $flags    = array();
178        $range    = false;
179        $scope    = $id;
180
181        for($i=0; $i<$num; $i++) {
182            // set current level
183            if($ins[$i][0] == 'section_open') {
184                $lvl = $ins[$i][1][0];
185                if($i > $range) $prev_lvl = $lvl;
186            }
187
188            if($ins[$i][0] == 'plugin' && $ins[$i][1][0] == 'include_include' ) {
189                // found no previous section set lvl to 0
190                if(!$lvl) $lvl = 0;
191
192                $mode  = $ins[$i][1][1][0];
193
194                if($mode == 'namespace') {
195                    $ns    = str_replace(':', '/', cleanID($ins[$i][1][1][1]));
196                    $sect  = '';
197                    $flags = $ins[$i][1][1][3];
198
199                    $pages = array();
200                    search($pages, $conf['datadir'], 'search_list', '', $ns);
201                    sort($pages);
202
203                    if(!empty($pages)) {
204                        $ins_inc = array();
205                        foreach($pages as $page) {
206                            $perm = auth_quickaclcheck($page['id']);
207                            array_push($this->hasparts, $page['id']);
208                            if($perm < AUTH_READ) continue;
209                            $ins_tmp[0]       = 'plugin';
210                            $ins_tmp[1][0]    = 'include_include';
211                            $ins_tmp[1][1][0] = 'page';
212                            $ins_tmp[1][1][1] = $page['id'];
213                            $ins_tmp[1][1][2] = '';
214                            $ins_tmp[1][1][3] = $flags;
215                            $ins_inc = array_merge($ins_inc, array($ins_tmp));
216                        }
217                        $ins_start = array_slice($ins, 0, $i+1);
218                        $ins_end   = array_slice($ins, $i+1);
219                        $ins       = array_merge($ins_start, $ins_inc, $ins_end);
220                    }
221                    unset($ins[$i]);
222                    $i--;
223                }
224
225                if($mode == 'page' || $mode == 'section') {
226                    $page  = $ins[$i][1][1][1];
227                    $perm = auth_quickaclcheck($page);
228
229                    array_push($this->hasparts, $page);
230                    if($perm < AUTH_READ) continue;
231
232                    $sect  = $ins[$i][1][1][2];
233                    $flags = $ins[$i][1][1][3];
234
235                    $page = $this->_apply_macro($page);
236                    resolve_pageid(getNS($scope), $page, $exists); // resolve shortcuts
237                    $ins[$i][1][1][4] = $scope;
238                    $scope = $page;
239                    $flags = $this->get_flags($flags);
240
241                    if(!page_exists($page)) {
242                        if($flags['footer']) {
243                            $ins[$i] = $this->_footer($page, $sect, '', $flags, 0);
244                        } else {
245                            unset($ins[$i]);
246                        }
247                    } else {
248                        $ins_inc = $this->_get_instructions($page, $sect, $mode, $lvl, $flags);
249                        if(!empty($ins_inc)) {
250                            // combine instructions and reset counter
251                            $ins_start = array_slice($ins, 0, $i+1);
252                            $ins_end   = array_slice($ins, $i+1);
253                            $range = $i + count($ins_inc);
254                            $ins = array_merge($ins_start, $ins_inc, $ins_end);
255                            $num = count($ins);
256                        }
257                    }
258                }
259            }
260
261            // check if we left the range of possible sub includes and reset lvl and scope to toplevel_id
262            if($range && ($i >= $range)) {
263                $lvl = ($prev_lvl == 0) ? 1 : $prev_lvl;
264                $prev_lvl = false;
265                $range    = false;
266                // reset scope to toplevel_id
267                $scope = $this->toplevel_id;
268            }
269        }
270
271        if(!empty($INFO['userinfo'])) {
272            $include_key = $INFO['userinfo']['name'] . '|' . implode('|', $INFO['userinfo']['grps']);
273        } else {
274            $include_key = '@ALL';
275        }
276
277        $meta = array();
278        $meta = p_get_metadata($id, 'plugin_include');
279        $meta['pages'] = array_unique($this->hasparts);
280        $meta['keys'][$include_key] = true;
281        p_set_metadata($id, array('plugin_include' => $meta), true, true);
282    }
283
284    /**
285     * Returns the converted instructions of a give page/section
286     *
287     * @author Michael Klier <chi@chimeric.de>
288     */
289    function _get_instructions($page, $sect, $mode, $lvl, $flags) {
290        global $ID;
291
292        $key = ($sect) ? $page . '#' . $sect : $page;
293
294        // prevent recursion
295        if(!$this->includes[$key]) {
296            $ins = p_cached_instructions(wikiFN($page));
297            $this->includes[$key] = true;
298            $this->_convert_instructions($ins, $lvl, $page, $sect, $flags);
299            return $ins;
300        }
301    }
302
303    /**
304     * Converts instructions of the included page
305     *
306     * The funcion iterates over the given list of instructions and generates
307     * an index of header and section indicies. It also removes document
308     * start/end instructions, converts links, and removes unwanted
309     * instructions like tags, comments, linkbacks.
310     *
311     * Later all header/section levels are convertet to match the current
312     * inclusion level.
313     *
314     * @author Michael Klier <chi@chimeric.de>
315     */
316    function _convert_instructions(&$ins, $lvl, $page, $sect, $flags) {
317
318        // filter instructions if needed
319        if(!empty($sect)) {
320            $this->_get_section($ins, $sect);   // section required
321        }
322
323        if($flags['firstsec']) {
324            $this->_get_firstsec($ins, $page);  // only first section
325        }
326
327        $ns  = getNS($page);
328        $num = count($ins);
329
330        $conv_idx = array(); // conversion index
331        $lvl_max  = false;   // max level
332        $first_header = -1;
333        $no_header  = false;
334        $sect_title = false;
335
336        for($i=0; $i<$num; $i++) {
337            switch($ins[$i][0]) {
338                case 'document_start':
339                case 'document_end':
340                case 'section_edit':
341                    unset($ins[$i]);
342                    break;
343                case 'header':
344                    // get section title of first section
345                    if($sect && !$sect_title) {
346                        $sect_title = $ins[$i][1][0];
347                    }
348                    // check if we need to skip the first header
349                    if((!$no_header) && $flags['noheader']) {
350                        $no_header = true;
351                    }
352
353                    $conv_idx[] = $i;
354                    // get index of first header
355                    if($first_header == -1) $first_header = $i;
356                    // get max level of this instructions set
357                    if(!$lvl_max || ($ins[$i][1][1] < $lvl_max)) {
358                        $lvl_max = $ins[$i][1][1];
359                    }
360                    break;
361                case 'section_open':
362                    $conv_idx[] = $i;
363                    break;
364                case 'internallink':
365                case 'internalmedia':
366                    if($ins[$i][1][0]{0} == '.') {
367                        if($ins[$i][1][0]{1} == '.') {
368                            $ins[$i][1][0] = getNS($ns) . ':' . substr($ins[$i][1][0], 2); // parent namespace
369                        } else {
370                            $ins[$i][1][0] = $ns . ':' . substr($ins[$i][1][0], 1); // current namespace
371                        }
372                    } elseif (strpos($ins[$i][1][0], ':') === false) {
373                        $ins[$i][1][0] = $ns . ':' . $ins[$i][1][0]; // relative links
374                    }
375                    break;
376                case 'plugin':
377                    // FIXME skip other plugins?
378                    switch($ins[$i][1][0]) {
379                        case 'tag_tag':                 // skip tags
380                        case 'discussion_comments':     // skip comments
381                        case 'linkback':                // skip linkbacks
382                        case 'data_entry':              // skip data plugin
383                        case 'meta':                    // skip meta plugin
384                            unset($ins[$i]);
385                            break;
386                    }
387                    break;
388                default:
389                    break;
390            }
391        }
392
393        // calculate difference between header/section level and include level
394        $diff = 0;
395        if (!$lvl_max) $lvl_max = 0; // if no level found in target, set to 0
396        $diff = $lvl - $lvl_max + 1;
397        if ($no_header) $diff -= 1;  // push up one level if "noheader"
398
399        // convert headers and set footer/permalink
400        $hdr_deleted   = false;
401        $has_permalink = false;
402        $footer_lvl    = false;
403        foreach($conv_idx as $idx) {
404            if($ins[$idx][0] == 'header') {
405                if($no_header && !$hdr_deleted) {
406                    unset ($ins[$idx]);
407                    $hdr_deleted = true;
408                    continue;
409                }
410
411                if($flags['indent']) {
412                    $lvl_new = (($ins[$idx][1][1] + $diff) > 5) ? 5 : ($ins[$idx][1][1] + $diff);
413                    $ins[$idx][1][1] = $lvl_new;
414                }
415
416                // set permalink
417                if($flags['link'] && !$has_permalink && ($idx == $first_header)) {
418                    $this->_permalink($ins[$idx], $page, $sect, $flags);
419                    $has_permalink = true;
420                }
421
422                // set footer level
423                if(!$footer_lvl && ($idx == $first_header) && !$no_header) {
424                    if($flags['indent']) {
425                        $footer_lvl = $lvl_new;
426                    } else {
427                        $footer_lvl = $lvl_max;
428                    }
429                }
430            } else {
431                // it's a section
432                if($flags['indent']) {
433                    $lvl_new = (($ins[$idx][1][0] + $diff) > 5) ? 5 : ($ins[$idx][1][0] + $diff);
434                    $ins[$idx][1][0] = $lvl_new;
435                }
436
437                // check if noheader is used and set the footer level to the first section
438                if($no_header && !$footer_lvl) {
439                    if($flags['indent']) {
440                        $footer_lvl = $lvl_new;
441                    } else {
442                        $footer_lvl = $lvl_max;
443                    }
444                }
445            }
446        }
447
448        // add edit button
449        if($flags['editbtn'] && (auth_quickaclcheck($page) >= AUTH_EDIT)) {
450            $this->_editbtn($ins, $page, $sect, $sect_title);
451        }
452
453        // add footer
454        if($flags['footer']) {
455            $ins[] = $this->_footer($page, $sect, $sect_title, $flags, $footer_lvl);
456        }
457
458        // add instructions entry divs
459        array_unshift($ins, array('plugin', array('include_div', array('open', $page))));
460        array_push($ins, array('plugin', array('include_div', array('close'))));
461
462        // close previous section if any and re-open after inclusion
463        if($lvl != 0) {
464            array_unshift($ins, array('section_close'));
465            $ins[] = array('section_open', array($lvl));
466        }
467    }
468
469    /**
470     * Appends instruction item for the include plugin footer
471     *
472     * @author Michael Klier <chi@chimeric.de>
473     */
474    function _footer($page, $sect, $sect_title, $flags, $footer_lvl) {
475        $footer = array();
476        $footer[0] = 'plugin';
477        $footer[1] = array('include_footer', array($page, $sect, $sect_title, $flags, $this->toplevel_id, $footer_lvl));
478        return $footer;
479    }
480
481    /**
482     * Appends instruction item for an edit button
483     *
484     * @author Michael Klier <chi@chimeric.de>
485     */
486    function _editbtn(&$ins, $page, $sect, $sect_title) {
487        $editbtn = array();
488        $editbtn[0] = 'plugin';
489        $editbtn[1] = array('include_editbtn', array($page, $sect, $sect_title, $this->toplevel_id));
490        $ins[] = $editbtn;
491    }
492
493    /**
494     * Convert instruction item for a permalink header
495     *
496     * @author Michael Klier <chi@chimeric.de>
497     */
498    function _permalink(&$ins, $page, $sect, $flags) {
499        $ins[0] = 'plugin';
500        $ins[1] = array('include_header', array($ins[1][0], $ins[1][1], $page, $sect, $flags));
501    }
502
503    /**
504     * Get a section including its subsections
505     *
506     * @author Michael Klier <chi@chimeric.de>
507     */
508    function _get_section(&$ins, $sect) {
509        $num = count($ins);
510        $offset = false;
511        $lvl    = false;
512        $end    = false;
513
514        for($i=0; $i<$num; $i++) {
515            if ($ins[$i][0] == 'header') {
516
517                // found the right header
518                if (cleanID($ins[$i][1][0]) == $sect) {
519                    $offset = $i;
520                    $lvl    = $ins[$i][1][1];
521                } elseif ($offset && $lvl && ($ins[$i][1][1] <= $lvl)) {
522                    $end = $i - $offset;
523                    break;
524                }
525            }
526        }
527        $offset = $offset ? $offset : 0;
528        $end = $end ? $end : ($num - 1);
529        if(is_array($ins)) {
530            $ins = array_slice($ins, $offset, $end);
531        }
532    }
533
534    /**
535     * Only display the first section of a page and a readmore link
536     *
537     * @author Michael Klier <chi@chimeric.de>
538     */
539    function _get_firstsec(&$ins, $page) {
540        $num = count($ins);
541        $first_sect = false;
542        for($i=0; $i<$num; $i++) {
543            if($ins[$i][0] == 'section_close') {
544                $first_sect = $i;
545            }
546            if(($first_sect) && ($ins[$i][0] == 'section_open')) {
547                $ins = array_slice($ins, 0, $first_sect);
548                $ins[] = array('p_open', array());
549                $ins[] = array('internallink',array($page, $this->getLang('readmore')));
550                $ins[] = array('p_close', array());
551                $ins[] = array('section_close');
552                return;
553            }
554        }
555    }
556
557    /**
558     * Makes user or date dependent includes possible
559     */
560    function _apply_macro($id) {
561        global $INFO;
562        global $auth;
563
564        // if we don't have an auth object, do nothing
565        if (!$auth) return $id;
566
567        $user     = $_SERVER['REMOTE_USER'];
568        $group    = $INFO['userinfo']['grps'][0];
569
570        $replace = array(
571                '@USER@'  => cleanID($user),
572                '@NAME@'  => cleanID($INFO['userinfo']['name']),
573                '@GROUP@' => cleanID($group),
574                '@YEAR@'  => date('Y'),
575                '@MONTH@' => date('m'),
576                '@DAY@'   => date('d'),
577                );
578        return str_replace(array_keys($replace), array_values($replace), $id);
579    }
580}
581//vim:ts=4:sw=4:et:enc=utf-8:
582