2 rcs_id('$Id: WikiDB.php,v 1.66 2004-06-07 18:57:27 rurban Exp $');
4 //require_once('lib/stdlib.php');
5 require_once('lib/PageType.php');
7 //FIXME: arg on get*Revision to hint that content is wanted.
10 * The classes in the file define the interface to the
14 * @author Geoffrey T. Dairiki <dairiki@dairiki.org>
18 * Force the creation of a new revision.
19 * @see WikiDB_Page::createRevision()
21 define('WIKIDB_FORCE_CREATE', -1);
23 // FIXME: used for debugging only. Comment out if cache does not work
24 define('USECACHE', 1);
27 * Abstract base class for the database used by PhpWiki.
29 * A <tt>WikiDB</tt> is a container for <tt>WikiDB_Page</tt>s which in
30 * turn contain <tt>WikiDB_PageRevision</tt>s.
32 * Conceptually a <tt>WikiDB</tt> contains all possible
33 * <tt>WikiDB_Page</tt>s, whether they have been initialized or not.
34 * Since all possible pages are already contained in a WikiDB, a call
35 * to WikiDB::getPage() will never fail (barring bugs and
36 * e.g. filesystem or SQL database problems.)
38 * Also each <tt>WikiDB_Page</tt> always contains at least one
39 * <tt>WikiDB_PageRevision</tt>: the default content (e.g. "Describe
40 * [PageName] here."). This default content has a version number of
43 * <tt>WikiDB_PageRevision</tt>s have read-only semantics. One can
44 * only create new revisions or delete old ones --- one can not modify
45 * an existing revision.
49 * Open a WikiDB database.
51 * This is a static member function. This function inspects its
52 * arguments to determine the proper subclass of WikiDB to
53 * instantiate, and then it instantiates it.
57 * @param hash $dbparams Database configuration parameters.
58 * Some pertinent paramters are:
61 * <dd> The back-end type. Current supported types are:
64 * <dd> Generic SQL backend based on the PEAR/DB database abstraction
67 * <dd> Dba based backend.
71 * <dd> (Used by the SQL backend.)
72 * The DSN specifying which database to connect to.
75 * <dd> Prefix to be prepended to database table (and file names).
78 * <dd> (Used by the dba backend.)
79 * Which directory db files reside in.
82 * <dd> (Used by the dba backend.)
83 * Timeout in seconds for opening (and obtaining lock) on the
87 * <dd> (Used by the dba backend.)
89 * Which dba handler to use. Good choices are probably either
93 * @return WikiDB A WikiDB object.
95 function open ($dbparams) {
96 $dbtype = $dbparams{'dbtype'};
97 include_once("lib/WikiDB/$dbtype.php");
99 $class = 'WikiDB_' . $dbtype;
100 return new $class ($dbparams);
110 function WikiDB (&$backend, $dbparams) {
111 $this->_backend = &$backend;
112 // don't do the following with the auth_dsn!
113 if (isset($dbparams['auth_dsn'])) return;
115 $this->_cache = new WikiDB_cache($backend);
116 // If the database doesn't yet have a timestamp, initialize it now.
117 if ($this->get('_timestamp') === false)
120 //FIXME: devel checking.
121 //$this->_backend->check();
125 * Get any user-level warnings about this WikiDB.
127 * Some back-ends, e.g. by default create there data files in the
128 * global /tmp directory. We would like to warn the user when this
129 * happens (since /tmp files tend to get wiped periodically.)
130 * Warnings such as these may be communicated from specific
131 * back-ends through this method.
135 * @return string A warning message (or <tt>false</tt> if there is
138 function genericWarnings() {
143 * Close database connection.
145 * The database may no longer be used after it is closed.
147 * Closing a WikiDB invalidates all <tt>WikiDB_Page</tt>s,
148 * <tt>WikiDB_PageRevision</tt>s and <tt>WikiDB_PageIterator</tt>s
149 * which have been obtained from it.
154 $this->_backend->close();
155 $this->_cache->close();
159 * Get a WikiDB_Page from a WikiDB.
161 * A {@link WikiDB} consists of the (infinite) set of all possible pages,
162 * therefore this method never fails.
165 * @param string $pagename Which page to get.
166 * @return WikiDB_Page The requested WikiDB_Page.
168 function getPage($pagename) {
169 static $error_displayed = false;
170 $pagename = (string) $pagename;
172 if ($pagename === '') {
173 if ($error_displayed) return false;
174 $error_displayed = true;
175 if (function_exists("xdebug_get_function_stack"))
176 var_dump(xdebug_get_function_stack());
177 trigger_error("empty pagename",E_USER_WARNING);
181 assert($pagename != '');
183 return new WikiDB_Page($this, $pagename);
187 * Determine whether page exists (in non-default form).
190 * $is_page = $dbi->isWikiPage($pagename);
194 * $page = $dbi->getPage($pagename);
195 * $current = $page->getCurrentRevision();
196 * $is_page = ! $current->hasDefaultContents();
198 * however isWikiPage may be implemented in a more efficient
199 * manner in certain back-ends.
203 * @param string $pagename string Which page to check.
205 * @return boolean True if the page actually exists with
206 * non-default contents in the WikiDataBase.
208 function isWikiPage ($pagename) {
209 $page = $this->getPage($pagename);
210 $current = $page->getCurrentRevision();
211 return ! $current->hasDefaultContents();
215 * Delete page from the WikiDB.
217 * Deletes all revisions of the page from the WikiDB. Also resets
218 * all page meta-data to the default values.
222 * @param string $pagename Name of page to delete.
224 function deletePage($pagename) {
225 $this->_cache->delete_page($pagename);
227 //How to create a RecentChanges entry with explaining summary?
229 $page = $this->getPage($pagename);
230 $current = $page->getCurrentRevision();
231 $meta = $current->_data;
232 $version = $current->getVersion();
233 $meta['summary'] = _("removed");
234 $page->save($current->getPackedContent(), $version + 1, $meta);
239 * Retrieve all pages.
241 * Gets the set of all pages with non-default contents.
243 * FIXME: do we need this? I think so. The simple searches
248 * @param boolean $include_defaulted Normally pages whose most
249 * recent revision has empty content are considered to be
250 * non-existant. Unless $include_defaulted is set to true, those
251 * pages will not be returned.
253 * @return WikiDB_PageIterator A WikiDB_PageIterator which contains all pages
254 * in the WikiDB which have non-default contents.
256 function getAllPages($include_defaulted=false, $sortby=false, $limit=false) {
257 $result = $this->_backend->get_all_pages($include_defaulted,$sortby,$limit);
258 return new WikiDB_PageIterator($this, $result);
262 //function nPages() {
264 // Yes, for paging. Renamed.
265 function numPages($filter=false, $exclude='') {
266 if (method_exists($this->_backend,'numPages'))
267 $count = $this->_backend->numPages($filter,$exclude);
269 $iter = $this->getAllPages();
270 $count = $iter->count();
278 * Search for pages containing (or not containing) certain words
281 * Pages are returned in alphabetical order whenever it is
282 * practical to do so.
284 * FIXME: should titleSearch and fullSearch be combined? I think so.
287 * @param TextSearchQuery $search A TextSearchQuery object
288 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
289 * @see TextSearchQuery
291 function titleSearch($search) {
292 $result = $this->_backend->text_search($search);
293 return new WikiDB_PageIterator($this, $result);
299 * Search for pages containing (or not containing) certain words
300 * in their entire text (this includes the page content and the
303 * Pages are returned in alphabetical order whenever it is
304 * practical to do so.
308 * @param TextSearchQuery $search A TextSearchQuery object.
309 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
310 * @see TextSearchQuery
312 function fullSearch($search) {
313 $result = $this->_backend->text_search($search, 'full_text');
314 return new WikiDB_PageIterator($this, $result);
318 * Find the pages with the greatest hit counts.
320 * Pages are returned in reverse order by hit count.
324 * @param integer $limit The maximum number of pages to return.
325 * Set $limit to zero to return all pages. If $limit < 0, pages will
326 * be sorted in decreasing order of popularity.
328 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching
331 function mostPopular($limit = 20, $sortby = '') {
332 // we don't support sortby=mtime here
333 if (strstr($sortby,'mtime'))
335 $result = $this->_backend->most_popular($limit, $sortby);
336 return new WikiDB_PageIterator($this, $result);
340 * Find recent page revisions.
342 * Revisions are returned in reverse order by creation time.
346 * @param hash $params This hash is used to specify various optional
350 * <dd> (integer) At most this many revisions will be returned.
352 * <dd> (integer) Only revisions since this time (unix-timestamp) will be returned.
353 * <dt> include_minor_revisions
354 * <dd> (boolean) Also include minor revisions. (Default is not to.)
355 * <dt> exclude_major_revisions
356 * <dd> (boolean) Don't include non-minor revisions.
357 * (Exclude_major_revisions implies include_minor_revisions.)
358 * <dt> include_all_revisions
359 * <dd> (boolean) Return all matching revisions for each page.
360 * Normally only the most recent matching revision is returned
364 * @return WikiDB_PageRevisionIterator A WikiDB_PageRevisionIterator containing the
365 * matching revisions.
367 function mostRecent($params = false) {
368 $result = $this->_backend->most_recent($params);
369 return new WikiDB_PageRevisionIterator($this, $result);
373 * Call the appropriate backend method.
376 * @param string $from Page to rename
377 * @param string $to New name
378 * @param boolean $updateWikiLinks If the text in all pages should be replaced.
379 * @return boolean true or false
381 function renamePage($from, $to, $updateWikiLinks = false) {
382 assert(is_string($from) && $from != '');
383 assert(is_string($to) && $to != '');
385 if (method_exists($this->_backend,'rename_page')) {
386 $oldpage = $this->getPage($from);
387 $newpage = $this->getPage($to);
388 //update all WikiLinks in existing pages
389 if ($updateWikiLinks) {
390 require_once('lib/plugin/WikiAdminSearchReplace.php');
391 $links = $oldpage->getBackLinks();
392 while ($linked_page = $links->next()) {
393 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,$linked_page->getName(),$from,$to);
395 $links = $newpage->getBackLinks();
396 while ($linked_page = $links->next()) {
397 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,$linked_page->getName(),$from,$to);
400 if ($oldpage->exists() and ! $newpage->exists()) {
401 if ($result = $this->_backend->rename_page($from, $to)) {
402 //create a RecentChanges entry with explaining summary
403 $page = $this->getPage($to);
404 $current = $page->getCurrentRevision();
405 $meta = $current->_data;
406 $version = $current->getVersion();
407 $meta['summary'] = sprintf(_("renamed from %s"),$from);
408 $page->save($current->getPackedContent(), $version + 1, $meta);
412 trigger_error(_("WikiDB::renamePage() not yet implemented for this backend"),E_USER_WARNING);
417 /** Get timestamp when database was last modified.
419 * @return string A string consisting of two integers,
420 * separated by a space. The first is the time in
421 * unix timestamp format, the second is a modification
422 * count for the database.
424 * The idea is that you can cast the return value to an
425 * int to get a timestamp, or you can use the string value
426 * as a good hash for the entire database.
428 function getTimestamp() {
429 $ts = $this->get('_timestamp');
430 return sprintf("%d %d", $ts[0], $ts[1]);
434 * Update the database timestamp.
438 $ts = $this->get('_timestamp');
439 $this->set('_timestamp', array(time(), $ts[1] + 1));
444 * Access WikiDB global meta-data.
446 * NOTE: this is currently implemented in a hackish and
447 * not very efficient manner.
451 * @param string $key Which meta data to get.
452 * Some reserved meta-data keys are:
454 * <dt>'_timestamp' <dd> Data used by getTimestamp().
457 * @return scalar The requested value, or false if the requested data
461 if (!$key || $key[0] == '%')
464 * Hack Alert: We can use any page (existing or not) to store
465 * this data (as long as we always use the same one.)
467 $gd = $this->getPage('global_data');
468 $data = $gd->get('__global');
470 if ($data && isset($data[$key]))
477 * Set global meta-data.
479 * NOTE: this is currently implemented in a hackish and
480 * not very efficient manner.
485 * @param string $key Meta-data key to set.
486 * @param string $newval New value.
488 function set($key, $newval) {
489 if (!$key || $key[0] == '%')
492 $gd = $this->getPage('global_data');
494 $data = $gd->get('__global');
501 $data[$key] = $newval;
503 $gd->set('__global', $data);
506 // simple select or create/update queries
507 function genericQuery($sql) {
509 if ($DBParams['dbtype'] == 'SQL') {
510 $result = $this->_backend->_dbh->query($sql);
511 if (DB::isError($result)) {
512 $msg = $result->getMessage();
513 trigger_error("SQL Error: ".DB::errorMessage($result), E_USER_WARNING);
518 } elseif ($DBParams['dbtype'] == 'ADODB') {
519 if (!($result = $this->_backend->_dbh->Execute($sql))) {
520 trigger_error("SQL Error: ".$this->_backend->_dbh->ErrorMsg(), E_USER_WARNING);
529 function getParam($param) {
531 if (isset($DBParams[$param])) return $DBParams[$param];
532 elseif ($param == 'prefix') return '';
536 function getAuthParam($param) {
537 global $DBAuthParams;
538 if (isset($DBAuthParams[$param])) return $DBAuthParams[$param];
539 elseif ($param == 'USER_AUTH_ORDER') return $GLOBALS['USER_AUTH_ORDER'];
540 elseif ($param == 'USER_AUTH_POLICY') return $GLOBALS['USER_AUTH_POLICY'];
547 * An abstract base class which representing a wiki-page within a
550 * A WikiDB_Page contains a number (at least one) of
551 * WikiDB_PageRevisions.
555 function WikiDB_Page(&$wikidb, $pagename) {
556 $this->_wikidb = &$wikidb;
557 $this->_pagename = $pagename;
559 if (!(is_string($pagename) and $pagename != '')) {
560 if (function_exists("xdebug_get_function_stack")) {
561 echo "xdebug_get_function_stack(): "; var_dump(xdebug_get_function_stack());
564 trigger_error("empty pagename",E_USER_WARNING);
567 } else assert(is_string($pagename) and $pagename != '');
571 * Get the name of the wiki page.
575 * @return string The page name.
578 return $this->_pagename;
582 $current = $this->getCurrentRevision();
583 return ! $current->hasDefaultContents();
587 * Delete an old revision of a WikiDB_Page.
589 * Deletes the specified revision of the page.
590 * It is a fatal error to attempt to delete the current revision.
594 * @param integer $version Which revision to delete. (You can also
595 * use a WikiDB_PageRevision object here.)
597 function deleteRevision($version) {
598 $backend = &$this->_wikidb->_backend;
599 $cache = &$this->_wikidb->_cache;
600 $pagename = &$this->_pagename;
602 $version = $this->_coerce_to_version($version);
606 $backend->lock(array('page','version'));
607 $latestversion = $cache->get_latest_version($pagename);
608 if ($latestversion && $version == $latestversion) {
609 $backend->unlock(array('page','version'));
610 trigger_error(sprintf("Attempt to delete most recent revision of '%s'",
611 $pagename), E_USER_ERROR);
615 $cache->delete_versiondata($pagename, $version);
616 $backend->unlock(array('page','version'));
620 * Delete a revision, or possibly merge it with a previous
624 * Suppose an author make a (major) edit to a page. Shortly
625 * after that the same author makes a minor edit (e.g. to fix
626 * spelling mistakes he just made.)
628 * Now some time later, where cleaning out old saved revisions,
629 * and would like to delete his minor revision (since there's
630 * really no point in keeping minor revisions around for a long
633 * Note that the text after the minor revision probably represents
634 * what the author intended to write better than the text after
635 * the preceding major edit.
637 * So what we really want to do is merge the minor edit with the
640 * We will only do this when:
642 * <li>The revision being deleted is a minor one, and
643 * <li>It has the same author as the immediately preceding revision.
646 function mergeRevision($version) {
647 $backend = &$this->_wikidb->_backend;
648 $cache = &$this->_wikidb->_cache;
649 $pagename = &$this->_pagename;
651 $version = $this->_coerce_to_version($version);
655 $backend->lock(array('version'));
656 $latestversion = $backend->get_latest_version($pagename);
657 if ($latestversion && $version == $latestversion) {
658 $backend->unlock(array('version'));
659 trigger_error(sprintf("Attempt to merge most recent revision of '%s'",
660 $pagename), E_USER_ERROR);
664 $versiondata = $cache->get_versiondata($pagename, $version, true);
666 // Not there? ... we're done!
667 $backend->unlock(array('version'));
671 if ($versiondata['is_minor_edit']) {
672 $previous = $backend->get_previous_version($pagename, $version);
674 $prevdata = $cache->get_versiondata($pagename, $previous);
675 if ($prevdata['author_id'] == $versiondata['author_id']) {
676 // This is a minor revision, previous version is
677 // by the same author. We will merge the
679 $cache->update_versiondata($pagename, $previous,
680 array('%content' => $versiondata['%content'],
681 '_supplanted' => $versiondata['_supplanted']));
686 $cache->delete_versiondata($pagename, $version);
687 $backend->unlock(array('version'));
692 * Create a new revision of a {@link WikiDB_Page}.
696 * @param int $version Version number for new revision.
697 * To ensure proper serialization of edits, $version must be
698 * exactly one higher than the current latest version.
699 * (You can defeat this check by setting $version to
700 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
702 * @param string $content Contents of new revision.
704 * @param hash $metadata Metadata for new revision.
705 * All values in the hash should be scalars (strings or integers).
707 * @param array $links List of pagenames which this page links to.
709 * @return WikiDB_PageRevision Returns the new WikiDB_PageRevision object. If
710 * $version was incorrect, returns false
712 function createRevision($version, &$content, $metadata, $links) {
713 $backend = &$this->_wikidb->_backend;
714 $cache = &$this->_wikidb->_cache;
715 $pagename = &$this->_pagename;
717 $backend->lock(array('version','page','recent','links','nonempty'));
719 $latestversion = $backend->get_latest_version($pagename);
720 $newversion = $latestversion + 1;
721 assert($newversion >= 1);
723 if ($version != WIKIDB_FORCE_CREATE && $version != $newversion) {
724 $backend->unlock(array('version','page','recent','links','nonempty'));
730 foreach ($data as $key => $val) {
731 if (empty($val) || $key[0] == '_' || $key[0] == '%')
735 assert(!empty($data['author']));
736 if (empty($data['author_id']))
737 @$data['author_id'] = $data['author'];
739 if (empty($data['mtime']))
740 $data['mtime'] = time();
742 if ($latestversion) {
743 // Ensure mtimes are monotonic.
744 $pdata = $cache->get_versiondata($pagename, $latestversion);
745 if ($data['mtime'] < $pdata['mtime']) {
746 trigger_error(sprintf(_("%s: Date of new revision is %s"),
747 $pagename,"'non-monotonic'"),
749 $data['orig_mtime'] = $data['mtime'];
750 $data['mtime'] = $pdata['mtime'];
753 // FIXME: use (possibly user specified) 'mtime' time or
755 $cache->update_versiondata($pagename, $latestversion,
756 array('_supplanted' => $data['mtime']));
759 $data['%content'] = &$content;
761 $cache->set_versiondata($pagename, $newversion, $data);
763 //$cache->update_pagedata($pagename, array(':latestversion' => $newversion,
764 //':deleted' => empty($content)));
766 $backend->set_links($pagename, $links);
768 $backend->unlock(array('version','page','recent','links','nonempty'));
770 return new WikiDB_PageRevision($this->_wikidb, $pagename, $newversion,
774 /** A higher-level interface to createRevision.
776 * This takes care of computing the links, and storing
777 * a cached version of the transformed wiki-text.
779 * @param string $wikitext The page content.
781 * @param int $version Version number for new revision.
782 * To ensure proper serialization of edits, $version must be
783 * exactly one higher than the current latest version.
784 * (You can defeat this check by setting $version to
785 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
787 * @param hash $meta Meta-data for new revision.
789 function save($wikitext, $version, $meta) {
790 $formatted = new TransformedText($this, $wikitext, $meta);
791 $type = $formatted->getType();
792 $meta['pagetype'] = $type->getName();
793 $links = $formatted->getWikiPageLinks();
795 $backend = &$this->_wikidb->_backend;
796 $newrevision = $this->createRevision($version, $wikitext, $meta, $links);
798 if (!defined('WIKIDB_NOCACHE_MARKUP') or !WIKIDB_NOCACHE_MARKUP)
799 $this->set('_cached_html', $formatted->pack());
801 // FIXME: probably should have some global state information
802 // in the backend to control when to optimize.
804 // We're doing this here rather than in createRevision because
805 // postgres can't optimize while locked.
806 if (time() % 50 == 0) {
807 if ($backend->optimize())
808 trigger_error(sprintf(_("Optimizing %s"),'backend'), E_USER_NOTICE);
811 /* Generate notification emails? */
812 if (isa($newrevision, 'wikidb_pagerevision')) {
813 // Save didn't fail because of concurrent updates.
814 $notify = $this->_wikidb->get('notify');
815 if (!empty($notify) and is_array($notify)) {
816 list($emails,$userids) = $this->getPageChangeEmails($notify);
818 $this->sendPageChangeNotification($wikitext, $version, $meta, $emails, $userids);
822 $newrevision->_transformedContent = $formatted;
826 function getPageChangeEmails($notify) {
827 $emails = array(); $userids = array();
828 foreach ($notify as $page => $users) {
829 if (glob_match($page,$this->_pagename)) {
830 foreach ($users as $userid => $user) {
831 if (!empty($user['verified']) and !empty($user['email'])) {
832 $emails[] = $user['email'];
833 $userids[] = $userid;
834 } elseif (!empty($user['email'])) {
836 // do a dynamic emailVerified check update
837 $u = $request->getUser();
838 if ($u->UserName() == $userid) {
839 if ($request->_prefs->get('emailVerified')) {
840 $emails[] = $user['email'];
841 $userids[] = $userid;
842 $notify[$page][$userid]['verified'] = 1;
843 $request->_dbi->set('notify',$notify);
846 $u = WikiUser($userid);
847 if ($u->_prefs->get('emailVerified')) {
848 $emails[] = $user['email'];
849 $userids[] = $userid;
850 $notify[$page][$userid]['verified'] = 1;
851 $request->_dbi->set('notify',$notify);
854 // ignore verification
857 if (!in_array($user['email'],$emails))
858 $emails[] = $user['email'];
865 $emails = array_unique($emails);
866 $userids = array_unique($userids);
867 return array($emails,$userids);
870 function sendPageChangeNotification(&$wikitext, $version, $meta, $emails, $userids) {
871 $backend = &$this->_wikidb->_backend;
872 $subject = _("Page change").' '.$this->_pagename;
873 $previous = $backend->get_previous_version($this->_pagename, $version);
874 if (!isset($meta['mtime'])) $meta['mtime'] = time();
876 $difflink = WikiURL($this->_pagename,array('action'=>'diff'),true);
877 $cache = &$this->_wikidb->_cache;
878 $this_content = explode("\n", $wikitext);
879 $prevdata = $cache->get_versiondata($this->_pagename, $previous, true);
880 if (empty($prevdata['%content']))
881 $prevdata = $backend->get_versiondata($this->_pagename, $previous, true);
882 $other_content = explode("\n", $prevdata['%content']);
884 include_once("lib/diff.php");
885 $diff2 = new Diff($other_content, $this_content);
886 $context_lines = max(4, count($other_content) + 1,
887 count($this_content) + 1);
888 $fmt = new UnifiedDiffFormatter($context_lines);
889 $content = $this->_pagename . " " . $previous . " " . Iso8601DateTime($prevdata['mtime']) . "\n";
890 $content .= $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
891 $content .= $fmt->format($diff2);
894 $difflink = WikiURL($this->_pagename,array(),true);
895 $content = $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
896 $content .= _("New Page");
898 $editedby = sprintf(_("Edited by: %s"), $meta['author']);
899 $emails = join(',',$emails);
900 if (mail($emails,"[".WIKI_NAME."] ".$subject,
905 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
906 $this->_pagename, join(',',$userids)), E_USER_NOTICE);
908 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
909 $this->_pagename, join(',',$userids)), E_USER_WARNING);
913 * Get the most recent revision of a page.
917 * @return WikiDB_PageRevision The current WikiDB_PageRevision object.
919 function getCurrentRevision() {
920 $backend = &$this->_wikidb->_backend;
921 $cache = &$this->_wikidb->_cache;
922 $pagename = &$this->_pagename;
924 // Prevent deadlock in case of memory exhausted errors
925 // Pure selection doesn't really need locking here.
927 // I know it would be better, but with lots of pages this deadlock is more
928 // severe than occasionally get not the latest revision.
930 $version = $cache->get_latest_version($pagename);
931 $revision = $this->getRevision($version);
932 //$backend->unlock();
938 * Get a specific revision of a WikiDB_Page.
942 * @param integer $version Which revision to get.
944 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or
945 * false if the requested revision does not exist in the {@link WikiDB}.
946 * Note that version zero of any page always exists.
948 function getRevision($version) {
949 $cache = &$this->_wikidb->_cache;
950 $pagename = &$this->_pagename;
952 if (! $version ) // 0 or false
953 return new WikiDB_PageRevision($this->_wikidb, $pagename, 0);
955 assert($version > 0);
956 $vdata = $cache->get_versiondata($pagename, $version);
959 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
964 * Get previous page revision.
966 * This method find the most recent revision before a specified
971 * @param integer $version Find most recent revision before this version.
972 * You can also use a WikiDB_PageRevision object to specify the $version.
974 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or false if the
975 * requested revision does not exist in the {@link WikiDB}. Note that
976 * unless $version is greater than zero, a revision (perhaps version zero,
977 * the default revision) will always be found.
979 function getRevisionBefore($version) {
980 $backend = &$this->_wikidb->_backend;
981 $pagename = &$this->_pagename;
983 $version = $this->_coerce_to_version($version);
988 $previous = $backend->get_previous_version($pagename, $version);
989 $revision = $this->getRevision($previous);
990 //$backend->unlock();
996 * Get all revisions of the WikiDB_Page.
998 * This does not include the version zero (default) revision in the
999 * returned revision set.
1001 * @return WikiDB_PageRevisionIterator A
1002 * WikiDB_PageRevisionIterator containing all revisions of this
1003 * WikiDB_Page in reverse order by version number.
1005 function getAllRevisions() {
1006 $backend = &$this->_wikidb->_backend;
1007 $revs = $backend->get_all_revisions($this->_pagename);
1008 return new WikiDB_PageRevisionIterator($this->_wikidb, $revs);
1012 * Find pages which link to or are linked from a page.
1016 * @param boolean $reversed Which links to find: true for backlinks (default).
1018 * @return WikiDB_PageIterator A WikiDB_PageIterator containing
1019 * all matching pages.
1021 function getLinks($reversed = true) {
1022 $backend = &$this->_wikidb->_backend;
1023 $result = $backend->get_links($this->_pagename, $reversed);
1024 return new WikiDB_PageIterator($this->_wikidb, $result);
1028 * All Links from other pages to this page.
1030 function getBackLinks() {
1031 return $this->getLinks(true);
1034 * Forward Links: All Links from this page to other pages.
1036 function getPageLinks() {
1037 return $this->getLinks(false);
1041 * Access WikiDB_Page meta-data.
1045 * @param string $key Which meta data to get.
1046 * Some reserved meta-data keys are:
1048 * <dt>'locked'<dd> Is page locked?
1049 * <dt>'hits' <dd> Page hit counter.
1050 * <dt>'pref' <dd> Users preferences, stored in homepages.
1051 * <dt>'owner' <dd> Default: first author_id. We might add a group with a dot here:
1052 * E.g. "owner.users"
1053 * <dt>'perm' <dd> Permission flag to authorize read/write/execution of
1054 * page-headers and content.
1055 * <dt>'score' <dd> Page score (not yet implement, do we need?)
1058 * @return scalar The requested value, or false if the requested data
1061 function get($key) {
1062 $cache = &$this->_wikidb->_cache;
1063 if (!$key || $key[0] == '%')
1065 $data = $cache->get_pagedata($this->_pagename);
1066 return isset($data[$key]) ? $data[$key] : false;
1070 * Get all the page meta-data as a hash.
1072 * @return hash The page meta-data.
1074 function getMetaData() {
1075 $cache = &$this->_wikidb->_cache;
1076 $data = $cache->get_pagedata($this->_pagename);
1078 foreach ($data as $key => $val) {
1079 if (/*!empty($val) &&*/ $key[0] != '%')
1086 * Set page meta-data.
1091 * @param string $key Meta-data key to set.
1092 * @param string $newval New value.
1094 function set($key, $newval) {
1095 $cache = &$this->_wikidb->_cache;
1096 $pagename = &$this->_pagename;
1098 assert($key && $key[0] != '%');
1100 $data = $cache->get_pagedata($pagename);
1102 if (!empty($newval)) {
1103 if (!empty($data[$key]) && $data[$key] == $newval)
1104 return; // values identical, skip update.
1107 if (empty($data[$key]))
1108 return; // values identical, skip update.
1111 $cache->update_pagedata($pagename, array($key => $newval));
1115 * Increase page hit count.
1117 * FIXME: IS this needed? Probably not.
1119 * This is a convenience function.
1120 * <pre> $page->increaseHitCount(); </pre>
1121 * is functionally identical to
1122 * <pre> $page->set('hits',$page->get('hits')+1); </pre>
1124 * Note that this method may be implemented in more efficient ways
1125 * in certain backends.
1129 function increaseHitCount() {
1130 @$newhits = $this->get('hits') + 1;
1131 $this->set('hits', $newhits);
1135 * Return a string representation of the WikiDB_Page
1137 * This is really only for debugging.
1141 * @return string Printable representation of the WikiDB_Page.
1143 function asString () {
1145 printf("[%s:%s\n", get_class($this), $this->getName());
1146 print_r($this->getMetaData());
1148 $strval = ob_get_contents();
1156 * @param integer_or_object $version_or_pagerevision
1157 * Takes either the version number (and int) or a WikiDB_PageRevision
1159 * @return integer The version number.
1161 function _coerce_to_version($version_or_pagerevision) {
1162 if (method_exists($version_or_pagerevision, "getContent"))
1163 $version = $version_or_pagerevision->getVersion();
1165 $version = (int) $version_or_pagerevision;
1167 assert($version >= 0);
1171 function isUserPage ($include_empty = true) {
1172 if ($include_empty) {
1173 $current = $this->getCurrentRevision();
1174 if ($current->hasDefaultContents()) {
1178 return $this->get('pref') ? true : false;
1181 // May be empty. Either the stored owner (/Chown), or the first authorized author
1182 function getOwner() {
1183 if ($owner = $this->get('owner'))
1184 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1185 // check all revisions forwards for the first author_id
1186 $backend = &$this->_wikidb->_backend;
1187 $pagename = &$this->_pagename;
1188 $latestversion = $backend->get_latest_version($pagename);
1189 for ($v=1; $v <= $latestversion; $v++) {
1190 $rev = $this->getRevision($v);
1191 if ($rev and $owner = $rev->get('author_id')) {
1192 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1198 // The authenticated author of the first revision or empty if not authenticated then.
1199 function getCreator() {
1200 if ($current = $this->getRevision(1)) return $current->get('author_id');
1207 * This class represents a specific revision of a WikiDB_Page within
1210 * A WikiDB_PageRevision has read-only semantics. You may only create
1211 * new revisions (and delete old ones) --- you cannot modify existing
1214 class WikiDB_PageRevision
1216 var $_transformedContent = false; // set by WikiDB_Page::save()
1218 function WikiDB_PageRevision(&$wikidb, $pagename, $version,
1219 $versiondata = false)
1221 $this->_wikidb = &$wikidb;
1222 $this->_pagename = $pagename;
1223 $this->_version = $version;
1224 $this->_data = $versiondata ? $versiondata : array();
1228 * Get the WikiDB_Page which this revision belongs to.
1232 * @return WikiDB_Page The WikiDB_Page which this revision belongs to.
1234 function getPage() {
1235 return new WikiDB_Page($this->_wikidb, $this->_pagename);
1239 * Get the version number of this revision.
1243 * @return integer The version number of this revision.
1245 function getVersion() {
1246 return $this->_version;
1250 * Determine whether this revision has defaulted content.
1252 * The default revision (version 0) of each page, as well as any
1253 * pages which are created with empty content have their content
1254 * defaulted to something like:
1256 * Describe [ThisPage] here.
1261 * @return boolean Returns true if the page has default content.
1263 function hasDefaultContents() {
1264 $data = &$this->_data;
1265 return empty($data['%content']);
1269 * Get the content as an array of lines.
1273 * @return array An array of lines.
1274 * The lines should contain no trailing white space.
1276 function getContent() {
1277 return explode("\n", $this->getPackedContent());
1281 * Get the pagename of the revision.
1285 * @return string pagename.
1287 function getPageName() {
1288 return $this->_pagename;
1292 * Determine whether revision is the latest.
1296 * @return boolean True iff the revision is the latest (most recent) one.
1298 function isCurrent() {
1299 if (!isset($this->_iscurrent)) {
1300 $page = $this->getPage();
1301 $current = $page->getCurrentRevision();
1302 $this->_iscurrent = $this->getVersion() == $current->getVersion();
1304 return $this->_iscurrent;
1308 * Get the transformed content of a page.
1310 * @param string $pagetype Override the page-type of the revision.
1312 * @return object An XmlContent-like object containing the page transformed
1315 function getTransformedContent($pagetype_override=false) {
1316 $backend = &$this->_wikidb->_backend;
1318 if ($pagetype_override) {
1319 // Figure out the normal page-type for this page.
1320 $type = PageType::GetPageType($this->get('pagetype'));
1321 if ($type->getName() == $pagetype_override)
1322 $pagetype_override = false; // Not really an override...
1325 if ($pagetype_override) {
1326 // Overriden page type, don't cache (or check cache).
1327 return new TransformedText($this->getPage(),
1328 $this->getPackedContent(),
1329 $this->getMetaData(),
1330 $pagetype_override);
1333 $possibly_cache_results = true;
1335 if (defined('WIKIDB_NOCACHE_MARKUP') and WIKIDB_NOCACHE_MARKUP) {
1336 if (WIKIDB_NOCACHE_MARKUP == 'purge') {
1337 // flush cache for this page.
1338 $page = $this->getPage();
1339 $page->set('_cached_html', false);
1341 $possibly_cache_results = false;
1343 elseif (!$this->_transformedContent) {
1345 if ($this->isCurrent()) {
1346 $page = $this->getPage();
1347 $this->_transformedContent = TransformedText::unpack($page->get('_cached_html'));
1350 $possibly_cache_results = false;
1352 //$backend->unlock();
1355 if (!$this->_transformedContent) {
1356 $this->_transformedContent
1357 = new TransformedText($this->getPage(),
1358 $this->getPackedContent(),
1359 $this->getMetaData());
1361 if ($possibly_cache_results) {
1362 // If we're still the current version, cache the transfomed page.
1364 if ($this->isCurrent()) {
1365 $page->set('_cached_html', $this->_transformedContent->pack());
1367 //$backend->unlock();
1371 return $this->_transformedContent;
1375 * Get the content as a string.
1379 * @return string The page content.
1380 * Lines are separated by new-lines.
1382 function getPackedContent() {
1383 $data = &$this->_data;
1386 if (empty($data['%content'])) {
1387 include_once('lib/InlineParser.php');
1388 // A feature similar to taglines at http://www.wlug.org.nz/
1389 // Lib from http://www.aasted.org/quote/
1390 if (defined('FORTUNE_DIR') and is_dir(FORTUNE_DIR)) {
1391 include_once("lib/fortune.php");
1392 $fortune = new Fortune();
1393 $quote = str_replace("\n<br>","\n", $fortune->quoteFromDir(FORTUNE_DIR));
1394 return sprintf("<verbatim>\n%s</verbatim>\n\n"._("Describe %s here."),
1395 $quote, "[" . WikiEscape($this->_pagename) . "]");
1397 // Replace empty content with default value.
1398 return sprintf(_("Describe %s here."),
1399 "[" . WikiEscape($this->_pagename) . "]");
1402 // There is (non-default) content.
1403 assert($this->_version > 0);
1405 if (!is_string($data['%content'])) {
1406 // Content was not provided to us at init time.
1407 // (This is allowed because for some backends, fetching
1408 // the content may be expensive, and often is not wanted
1411 // In any case, now we need to get it.
1412 $data['%content'] = $this->_get_content();
1413 assert(is_string($data['%content']));
1416 return $data['%content'];
1419 function _get_content() {
1420 $cache = &$this->_wikidb->_cache;
1421 $pagename = $this->_pagename;
1422 $version = $this->_version;
1424 assert($version > 0);
1426 $newdata = $cache->get_versiondata($pagename, $version, true);
1428 assert(is_string($newdata['%content']));
1429 return $newdata['%content'];
1432 // else revision has been deleted... What to do?
1433 return __sprintf("Oops! Revision %s of %s seems to have been deleted!",
1434 $version, $pagename);
1439 * Get meta-data for this revision.
1444 * @param string $key Which meta-data to access.
1446 * Some reserved revision meta-data keys are:
1448 * <dt> 'mtime' <dd> Time this revision was created (seconds since midnight Jan 1, 1970.)
1449 * The 'mtime' meta-value is normally set automatically by the database
1450 * backend, but it may be specified explicitly when creating a new revision.
1452 * <dd> To ensure consistency of RecentChanges, the mtimes of the versions
1453 * of a page must be monotonically increasing. If an attempt is
1454 * made to create a new revision with an mtime less than that of
1455 * the preceeding revision, the new revisions timestamp is force
1456 * to be equal to that of the preceeding revision. In that case,
1457 * the originally requested mtime is preserved in 'orig_mtime'.
1458 * <dt> '_supplanted' <dd> Time this revision ceased to be the most recent.
1459 * This meta-value is <em>always</em> automatically maintained by the database
1460 * backend. (It is set from the 'mtime' meta-value of the superceding
1461 * revision.) '_supplanted' has a value of 'false' for the current revision.
1463 * FIXME: this could be refactored:
1465 * <dd> Author of the page (as he should be reported in, e.g. RecentChanges.)
1467 * <dd> Authenticated author of a page. This is used to identify
1468 * the distinctness of authors when cleaning old revisions from
1470 * <dt> 'is_minor_edit' <dd> Set if change was marked as a minor revision by the author.
1471 * <dt> 'summary' <dd> Short change summary entered by page author.
1474 * Meta-data keys must be valid C identifers (they have to start with a letter
1475 * or underscore, and can contain only alphanumerics and underscores.)
1477 * @return string The requested value, or false if the requested value
1480 function get($key) {
1481 if (!$key || $key[0] == '%')
1483 $data = &$this->_data;
1484 return isset($data[$key]) ? $data[$key] : false;
1488 * Get all the revision page meta-data as a hash.
1490 * @return hash The revision meta-data.
1492 function getMetaData() {
1494 foreach ($this->_data as $key => $val) {
1495 if (!empty($val) && $key[0] != '%')
1503 * Return a string representation of the revision.
1505 * This is really only for debugging.
1509 * @return string Printable representation of the WikiDB_Page.
1511 function asString () {
1513 printf("[%s:%d\n", get_class($this), $this->get('version'));
1514 print_r($this->_data);
1515 echo $this->getPackedContent() . "\n]\n";
1516 $strval = ob_get_contents();
1524 * Class representing a sequence of WikiDB_Pages.
1525 * TODO: Enhance to php5 iterators
1527 class WikiDB_PageIterator
1529 function WikiDB_PageIterator(&$wikidb, &$pages) {
1530 $this->_pages = $pages;
1531 $this->_wikidb = &$wikidb;
1535 return $this->_pages->count();
1539 * Get next WikiDB_Page in sequence.
1543 * @return WikiDB_Page The next WikiDB_Page in the sequence.
1546 if ( ! ($next = $this->_pages->next()) )
1549 $pagename = &$next['pagename'];
1551 trigger_error('empty pagename in WikiDB_PageIterator::next()', E_USER_WARNING);
1555 if (isset($next['pagedata']))
1556 $this->_wikidb->_cache->cache_data($next);
1558 return new WikiDB_Page($this->_wikidb, $pagename);
1562 * Release resources held by this iterator.
1564 * The iterator may not be used after free() is called.
1566 * There is no need to call free(), if next() has returned false.
1567 * (I.e. if you iterate through all the pages in the sequence,
1568 * you do not need to call free() --- you only need to call it
1569 * if you stop before the end of the iterator is reached.)
1574 $this->_pages->free();
1577 function asArray() {
1579 while ($page = $this->next())
1585 // Not yet used and problematic. Order should be set in the query, not afterwards.
1586 // See PageList::sortby
1587 function setSortby ($arg = false) {
1589 $arg = @$_GET['sortby'];
1591 $sortby = substr($arg,1);
1592 $order = substr($arg,0,1)=='+' ? 'ASC' : 'DESC';
1595 if (is_array($arg)) { // array('mtime' => 'desc')
1602 // available column types to sort by:
1603 // todo: we must provide access methods for the generic dumb/iterator
1604 $this->_types = explode(',','pagename,mtime,hits,version,author,locked,minor,markup');
1605 if (in_array($sortby,$this->_types))
1606 $this->_options['sortby'] = $sortby;
1608 trigger_error(sprintf("Argument %s '%s' ignored",'sortby',$sortby), E_USER_WARNING);
1609 if (in_array(strtoupper($order),'ASC','DESC'))
1610 $this->_options['order'] = strtoupper($order);
1612 trigger_error(sprintf("Argument %s '%s' ignored",'order',$order), E_USER_WARNING);
1618 * A class which represents a sequence of WikiDB_PageRevisions.
1619 * TODO: Enhance to php5 iterators
1621 class WikiDB_PageRevisionIterator
1623 function WikiDB_PageRevisionIterator(&$wikidb, &$revisions) {
1624 $this->_revisions = $revisions;
1625 $this->_wikidb = &$wikidb;
1629 return $this->_revisions->count();
1633 * Get next WikiDB_PageRevision in sequence.
1637 * @return WikiDB_PageRevision
1638 * The next WikiDB_PageRevision in the sequence.
1641 if ( ! ($next = $this->_revisions->next()) )
1644 $this->_wikidb->_cache->cache_data($next);
1646 $pagename = $next['pagename'];
1647 $version = $next['version'];
1648 $versiondata = $next['versiondata'];
1650 if (!(is_string($pagename) and $pagename != '')) {
1651 trigger_error("empty pagename",E_USER_WARNING);
1654 } else assert(is_string($pagename) and $pagename != '');
1656 if (!is_array($versiondata)) {
1657 trigger_error("empty versiondata",E_USER_WARNING);
1660 } else assert(is_array($versiondata));
1662 if (!($version > 0)) {
1663 trigger_error("invalid version",E_USER_WARNING);
1666 } else assert($version > 0);
1668 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
1673 * Release resources held by this iterator.
1675 * The iterator may not be used after free() is called.
1677 * There is no need to call free(), if next() has returned false.
1678 * (I.e. if you iterate through all the revisions in the sequence,
1679 * you do not need to call free() --- you only need to call it
1680 * if you stop before the end of the iterator is reached.)
1685 $this->_revisions->free();
1688 function asArray() {
1690 while ($rev = $this->next())
1699 * Data cache used by WikiDB.
1701 * FIXME: Maybe rename this to caching_backend (or some such).
1707 // FIXME: beautify versiondata cache. Cache only limited data?
1709 function WikiDB_cache (&$backend) {
1710 $this->_backend = &$backend;
1712 $this->_pagedata_cache = array();
1713 $this->_versiondata_cache = array();
1714 array_push ($this->_versiondata_cache, array());
1715 $this->_glv_cache = array();
1719 $this->_pagedata_cache = false;
1720 $this->_versiondata_cache = false;
1721 $this->_glv_cache = false;
1724 function get_pagedata($pagename) {
1725 assert(is_string($pagename) && $pagename != '');
1726 $cache = &$this->_pagedata_cache;
1728 if (!isset($cache[$pagename]) || !is_array($cache[$pagename])) {
1729 $cache[$pagename] = $this->_backend->get_pagedata($pagename);
1730 if (empty($cache[$pagename]))
1731 $cache[$pagename] = array();
1734 return $cache[$pagename];
1737 function update_pagedata($pagename, $newdata) {
1738 assert(is_string($pagename) && $pagename != '');
1740 $this->_backend->update_pagedata($pagename, $newdata);
1742 if (is_array($this->_pagedata_cache[$pagename])) {
1743 $cachedata = &$this->_pagedata_cache[$pagename];
1744 foreach($newdata as $key => $val)
1745 $cachedata[$key] = $val;
1749 function invalidate_cache($pagename) {
1750 unset ($this->_pagedata_cache[$pagename]);
1751 unset ($this->_versiondata_cache[$pagename]);
1752 unset ($this->_glv_cache[$pagename]);
1755 function delete_page($pagename) {
1756 $this->_backend->delete_page($pagename);
1757 unset ($this->_pagedata_cache[$pagename]);
1758 unset ($this->_glv_cache[$pagename]);
1762 function cache_data($data) {
1763 if (isset($data['pagedata']))
1764 $this->_pagedata_cache[$data['pagename']] = $data['pagedata'];
1767 function get_versiondata($pagename, $version, $need_content = false) {
1768 // FIXME: Seriously ugly hackage
1769 if (defined('USECACHE') and USECACHE) { //temporary - for debugging
1770 assert(is_string($pagename) && $pagename != '');
1771 // there is a bug here somewhere which results in an assertion failure at line 105
1772 // of ArchiveCleaner.php It goes away if we use the next line.
1773 $need_content = true;
1774 $nc = $need_content ? '1':'0';
1775 $cache = &$this->_versiondata_cache;
1776 if (!isset($cache[$pagename][$version][$nc])||
1777 !(is_array ($cache[$pagename])) || !(is_array ($cache[$pagename][$version]))) {
1778 $cache[$pagename][$version][$nc] =
1779 $this->_backend->get_versiondata($pagename,$version, $need_content);
1780 // If we have retrieved all data, we may as well set the cache for $need_content = false
1782 $cache[$pagename][$version]['0'] = $cache[$pagename][$version]['1'];
1785 $vdata = $cache[$pagename][$version][$nc];
1787 $vdata = $this->_backend->get_versiondata($pagename, $version, $need_content);
1790 if ($vdata && !empty($vdata['%pagedata']))
1791 $this->_pagedata_cache[$pagename] = $vdata['%pagedata'];
1795 function set_versiondata($pagename, $version, $data) {
1796 $new = $this->_backend->set_versiondata($pagename, $version, $data);
1798 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
1800 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
1801 // Is this necessary?
1802 unset($this->_glv_cache[$pagename]);
1805 function update_versiondata($pagename, $version, $data) {
1806 $new = $this->_backend->update_versiondata($pagename, $version, $data);
1808 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
1810 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
1811 // Is this necessary?
1812 unset($this->_glv_cache[$pagename]);
1815 function delete_versiondata($pagename, $version) {
1816 $new = $this->_backend->delete_versiondata($pagename, $version);
1817 unset ($this->_versiondata_cache[$pagename][$version]['1']);
1818 unset ($this->_versiondata_cache[$pagename][$version]['0']);
1819 unset ($this->_glv_cache[$pagename]);
1822 function get_latest_version($pagename) {
1823 if (defined('USECACHE')){
1824 assert (is_string($pagename) && $pagename != '');
1825 $cache = &$this->_glv_cache;
1826 if (!isset($cache[$pagename])) {
1827 $cache[$pagename] = $this->_backend->get_latest_version($pagename);
1828 if (empty($cache[$pagename]))
1829 $cache[$pagename] = 0;
1831 return $cache[$pagename];
1833 return $this->_backend->get_latest_version($pagename);
1839 // $Log: not supported by cvs2svn $
1840 // Revision 1.65 2004/06/04 20:32:53 rurban
1841 // Several locale related improvements suggested by Pierrick Meignen
1842 // LDAP fix by John Cole
1843 // reanable admin check without ENABLE_PAGEPERM in the admin plugins
1845 // Revision 1.64 2004/06/04 16:50:00 rurban
1846 // add random quotes to empty pages
1848 // Revision 1.63 2004/06/04 11:58:38 rurban
1849 // added USE_TAGLINES
1851 // Revision 1.62 2004/06/03 22:24:41 rurban
1852 // reenable admin check on !ENABLE_PAGEPERM, honor s=Wildcard arg, fix warning after Remove
1854 // Revision 1.61 2004/06/02 17:13:48 rurban
1855 // fix getRevisionBefore assertion
1857 // Revision 1.60 2004/05/28 10:09:58 rurban
1858 // fix bug #962117, incorrect init of auth_dsn
1860 // Revision 1.59 2004/05/27 17:49:05 rurban
1861 // renamed DB_Session to DbSession (in CVS also)
1862 // added WikiDB->getParam and WikiDB->getAuthParam method to get rid of globals
1863 // remove leading slash in error message
1864 // added force_unlock parameter to File_Passwd (no return on stale locks)
1865 // fixed adodb session AffectedRows
1866 // added FileFinder helpers to unify local filenames and DATA_PATH names
1867 // editpage.php: new edit toolbar javascript on ENABLE_EDIT_TOOLBAR
1869 // Revision 1.58 2004/05/18 13:59:14 rurban
1870 // rename simpleQuery to genericQuery
1872 // Revision 1.57 2004/05/16 22:07:35 rurban
1873 // check more config-default and predefined constants
1874 // various PagePerm fixes:
1875 // fix default PagePerms, esp. edit and view for Bogo and Password users
1876 // implemented Creator and Owner
1877 // BOGOUSERS renamed to BOGOUSER
1878 // fixed syntax errors in signin.tmpl
1880 // Revision 1.56 2004/05/15 22:54:49 rurban
1881 // fixed important WikiDB bug with DEBUG > 0: wrong assertion
1882 // improved SetAcl (works) and PagePerms, some WikiGroup helpers.
1884 // Revision 1.55 2004/05/12 19:27:47 rurban
1885 // revert wrong inline optimization.
1887 // Revision 1.54 2004/05/12 10:49:55 rurban
1888 // require_once fix for those libs which are loaded before FileFinder and
1889 // its automatic include_path fix, and where require_once doesn't grok
1890 // dirname(__FILE__) != './lib'
1891 // upgrade fix with PearDB
1892 // navbar.tmpl: remove spaces for IE button alignment
1894 // Revision 1.53 2004/05/08 14:06:12 rurban
1895 // new support for inlined image attributes: [image.jpg size=50x30 align=right]
1896 // minor stability and portability fixes
1898 // Revision 1.52 2004/05/06 19:26:16 rurban
1899 // improve stability, trying to find the InlineParser endless loop on sf.net
1901 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
1903 // Revision 1.51 2004/05/06 17:30:37 rurban
1904 // CategoryGroup: oops, dos2unix eol
1905 // improved phpwiki_version:
1906 // pre -= .0001 (1.3.10pre: 1030.099)
1907 // -p1 += .001 (1.3.9-p1: 1030.091)
1908 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
1909 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
1910 // backend->backendType(), backend->database(),
1911 // backend->listOfFields(),
1912 // backend->listOfTables(),
1914 // Revision 1.50 2004/05/04 22:34:25 rurban
1917 // Revision 1.49 2004/05/03 11:16:40 rurban
1918 // fixed sendPageChangeNotification
1919 // subject rewording
1921 // Revision 1.48 2004/04/29 23:03:54 rurban
1922 // fixed sf.net bug #940996
1924 // Revision 1.47 2004/04/29 19:39:44 rurban
1925 // special support for formatted plugins (one-liners)
1926 // like <small><plugin BlaBla ></small>
1927 // iter->asArray() helper for PopularNearby
1928 // db_session for older php's (no &func() allowed)
1930 // Revision 1.46 2004/04/26 20:44:34 rurban
1931 // locking table specific for better databases
1933 // Revision 1.45 2004/04/20 00:06:03 rurban
1934 // themable paging support
1936 // Revision 1.44 2004/04/19 18:27:45 rurban
1937 // Prevent from some PHP5 warnings (ref args, no :: object init)
1938 // php5 runs now through, just one wrong XmlElement object init missing
1939 // Removed unneccesary UpgradeUser lines
1940 // Changed WikiLink to omit version if current (RecentChanges)
1942 // Revision 1.43 2004/04/18 01:34:20 rurban
1943 // protect most_popular from sortby=mtime
1945 // Revision 1.42 2004/04/18 01:11:51 rurban
1946 // more numeric pagename fixes.
1947 // fixed action=upload with merge conflict warnings.
1948 // charset changed from constant to global (dynamic utf-8 switching)
1954 // c-basic-offset: 4
1955 // c-hanging-comment-ender-p: nil
1956 // indent-tabs-mode: nil