2 rcs_id('$Id: WikiDB.php,v 1.145 2006-12-22 17:59:55 rurban Exp $');
4 require_once('lib/PageType.php');
7 * The classes in the file define the interface to the
11 * @author Geoffrey T. Dairiki <dairiki@dairiki.org>
16 * Force the creation of a new revision.
17 * @see WikiDB_Page::createRevision()
19 if (!defined('WIKIDB_FORCE_CREATE'))
20 define('WIKIDB_FORCE_CREATE', -1);
23 * Abstract base class for the database used by PhpWiki.
25 * A <tt>WikiDB</tt> is a container for <tt>WikiDB_Page</tt>s which in
26 * turn contain <tt>WikiDB_PageRevision</tt>s.
28 * Conceptually a <tt>WikiDB</tt> contains all possible
29 * <tt>WikiDB_Page</tt>s, whether they have been initialized or not.
30 * Since all possible pages are already contained in a WikiDB, a call
31 * to WikiDB::getPage() will never fail (barring bugs and
32 * e.g. filesystem or SQL database problems.)
34 * Also each <tt>WikiDB_Page</tt> always contains at least one
35 * <tt>WikiDB_PageRevision</tt>: the default content (e.g. "Describe
36 * [PageName] here."). This default content has a version number of
39 * <tt>WikiDB_PageRevision</tt>s have read-only semantics. One can
40 * only create new revisions or delete old ones --- one can not modify
41 * an existing revision.
45 * Open a WikiDB database.
47 * This is a static member function. This function inspects its
48 * arguments to determine the proper subclass of WikiDB to
49 * instantiate, and then it instantiates it.
53 * @param hash $dbparams Database configuration parameters.
54 * Some pertinent paramters are:
57 * <dd> The back-end type. Current supported types are:
60 * <dd> Generic SQL backend based on the PEAR/DB database abstraction
61 * library. (More stable and conservative)
63 * <dd> Another generic SQL backend. (More current features are tested here. Much faster)
65 * <dd> Dba based backend. The default and by far the fastest.
73 * <dd> (Used by the SQL and ADODB backends.)
74 * The DSN specifying which database to connect to.
77 * <dd> Prefix to be prepended to database tables (and file names).
80 * <dd> (Used by the dba backend.)
81 * Which directory db files reside in.
84 * <dd> Used only by the dba backend so far.
85 * And: When optimizing mysql it closes timed out mysql processes.
86 * otherwise only used for dba: Timeout in seconds for opening (and
87 * obtaining lock) on the dbm file.
90 * <dd> (Used by the dba backend.)
92 * Which dba handler to use. Good choices are probably either
96 * @return WikiDB A WikiDB object.
98 function open ($dbparams) {
99 $dbtype = $dbparams{'dbtype'};
100 include_once("lib/WikiDB/$dbtype.php");
102 $class = 'WikiDB_' . $dbtype;
103 return new $class ($dbparams);
113 function WikiDB (&$backend, $dbparams) {
114 $this->_backend = &$backend;
115 // don't do the following with the auth_dsn!
116 if (isset($dbparams['auth_dsn'])) return;
118 $this->_cache = new WikiDB_cache($backend);
119 if (!empty($GLOBALS['request'])) $GLOBALS['request']->_dbi = $this;
121 // If the database doesn't yet have a timestamp, initialize it now.
122 if ($this->get('_timestamp') === false)
126 if ((int)DEBUG & _DEBUG_SQL) {
127 $this->_backend->check();
132 * Close database connection.
134 * The database may no longer be used after it is closed.
136 * Closing a WikiDB invalidates all <tt>WikiDB_Page</tt>s,
137 * <tt>WikiDB_PageRevision</tt>s and <tt>WikiDB_PageIterator</tt>s
138 * which have been obtained from it.
143 $this->_backend->close();
144 $this->_cache->close();
148 * Get a WikiDB_Page from a WikiDB.
150 * A {@link WikiDB} consists of the (infinite) set of all possible pages,
151 * therefore this method never fails.
154 * @param string $pagename Which page to get.
155 * @return WikiDB_Page The requested WikiDB_Page.
157 function getPage($pagename) {
158 static $error_displayed = false;
159 $pagename = (string) $pagename;
161 if ($pagename === '') {
162 if ($error_displayed) return false;
163 $error_displayed = true;
164 if (function_exists("xdebug_get_function_stack"))
165 var_dump(xdebug_get_function_stack());
166 trigger_error("empty pagename", E_USER_WARNING);
170 assert($pagename != '');
172 return new WikiDB_Page($this, $pagename);
176 * Determine whether page exists (in non-default form).
179 * $is_page = $dbi->isWikiPage($pagename);
183 * $page = $dbi->getPage($pagename);
184 * $current = $page->getCurrentRevision();
185 * $is_page = ! $current->hasDefaultContents();
187 * however isWikiPage may be implemented in a more efficient
188 * manner in certain back-ends.
192 * @param string $pagename string Which page to check.
194 * @return boolean True if the page actually exists with
195 * non-default contents in the WikiDataBase.
197 function isWikiPage ($pagename) {
198 $page = $this->getPage($pagename);
199 return $page->exists();
203 * Delete page from the WikiDB.
205 * Deletes the page from the WikiDB with the possibility to revert and diff.
206 * //Also resets all page meta-data to the default values.
208 * Note: purgePage() effectively destroys all revisions of the page from the WikiDB.
212 * @param string $pagename Name of page to delete.
214 function deletePage($pagename) {
215 // don't create empty revisions of already purged pages.
216 if ($this->_backend->get_latest_version($pagename))
217 $result = $this->_cache->delete_page($pagename);
221 /* Generate notification emails? */
222 include_once("lib/MailNotify.php");
223 $MailNotify = new MailNotify($pagename);
224 $MailNotify->onDeletePage ($this, $pagename);
226 //How to create a RecentChanges entry with explaining summary? Dynamically
228 $page = $this->getPage($pagename);
229 $current = $page->getCurrentRevision();
230 $meta = $current->_data;
231 $version = $current->getVersion();
232 $meta['summary'] = _("removed");
233 $page->save($current->getPackedContent(), $version + 1, $meta);
239 * Completely remove the page from the WikiDB, without undo possibility.
241 function purgePage($pagename) {
242 $result = $this->_cache->purge_page($pagename);
243 $this->deletePage($pagename); // just for the notification
248 * Retrieve all pages.
250 * Gets the set of all pages with non-default contents.
254 * @param boolean $include_defaulted Normally pages whose most
255 * recent revision has empty content are considered to be
256 * non-existant. Unless $include_defaulted is set to true, those
257 * pages will not be returned.
259 * @return WikiDB_PageIterator A WikiDB_PageIterator which contains all pages
260 * in the WikiDB which have non-default contents.
262 function getAllPages($include_empty=false, $sortby=false, $limit=false,
265 // HACK: memory_limit=8M will fail on too large pagesets. old php on unix only!
267 $mem = ini_get("memory_limit");
268 if ($mem and !$limit and !isWindows() and !check_php_version(4,3)) {
270 $GLOBALS['request']->setArg('limit', $limit);
271 $GLOBALS['request']->setArg('paging', 'auto');
274 $result = $this->_backend->get_all_pages($include_empty, $sortby, $limit,
276 return new WikiDB_PageIterator($this, $result,
277 array('include_empty' => $include_empty,
278 'exclude' => $exclude,
283 * $include_empty = true: include also empty pages
284 * exclude: comma-seperated list pagenames: TBD: array of pagenames
286 function numPages($include_empty=false, $exclude='') {
287 if (method_exists($this->_backend, 'numPages'))
288 // FIXME: currently are all args ignored.
289 $count = $this->_backend->numPages($include_empty, $exclude);
291 // FIXME: exclude ignored.
292 $iter = $this->getAllPages($include_empty, false, false, $exclude);
293 $count = $iter->count();
302 * Search for pages containing (or not containing) certain words
305 * Pages are returned in alphabetical order whenever it is
306 * practical to do so.
308 * FIXME: clarify $search syntax. provide glob=>TextSearchQuery converters
311 * @param TextSearchQuery $search A TextSearchQuery object
312 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
313 * @see TextSearchQuery
315 function titleSearch($search, $sortby='pagename', $limit=false, $exclude=false) {
316 $result = $this->_backend->text_search($search, false, $sortby, $limit, $exclude);
317 return new WikiDB_PageIterator($this, $result,
318 array('exclude' => $exclude,
325 * Search for pages containing (or not containing) certain words
326 * in their entire text (this includes the page content and the
329 * Pages are returned in alphabetical order whenever it is
330 * practical to do so.
334 * @param TextSearchQuery $search A TextSearchQuery object.
335 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
336 * @see TextSearchQuery
338 function fullSearch($search, $sortby='pagename', $limit=false, $exclude=false) {
339 $result = $this->_backend->text_search($search, true, $sortby, $limit, $exclude);
340 return new WikiDB_PageIterator($this, $result,
341 array('exclude' => $exclude,
343 'stoplisted' => $result->stoplisted
348 * Find the pages with the greatest hit counts.
350 * Pages are returned in reverse order by hit count.
354 * @param integer $limit The maximum number of pages to return.
355 * Set $limit to zero to return all pages. If $limit < 0, pages will
356 * be sorted in decreasing order of popularity.
358 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching
361 function mostPopular($limit = 20, $sortby = '-hits') {
362 $result = $this->_backend->most_popular($limit, $sortby);
363 return new WikiDB_PageIterator($this, $result);
367 * Find recent page revisions.
369 * Revisions are returned in reverse order by creation time.
373 * @param hash $params This hash is used to specify various optional
377 * <dd> (integer) At most this many revisions will be returned.
379 * <dd> (integer) Only revisions since this time (unix-timestamp) will be returned.
380 * <dt> include_minor_revisions
381 * <dd> (boolean) Also include minor revisions. (Default is not to.)
382 * <dt> exclude_major_revisions
383 * <dd> (boolean) Don't include non-minor revisions.
384 * (Exclude_major_revisions implies include_minor_revisions.)
385 * <dt> include_all_revisions
386 * <dd> (boolean) Return all matching revisions for each page.
387 * Normally only the most recent matching revision is returned
391 * @return WikiDB_PageRevisionIterator A WikiDB_PageRevisionIterator containing the
392 * matching revisions.
394 function mostRecent($params = false) {
395 $result = $this->_backend->most_recent($params);
396 return new WikiDB_PageRevisionIterator($this, $result);
402 * @return Iterator A generic iterator containing rows of (duplicate) pagename, wantedfrom.
404 function wantedPages($exclude_from='', $exclude='', $sortby=false, $limit=false) {
405 return $this->_backend->wanted_pages($exclude_from, $exclude, $sortby, $limit);
406 //return new WikiDB_PageIterator($this, $result);
412 * @return array of pagename => linkrelation or just all related pages
414 function listRelations($sortby=false, $limit=false, $exclude=false) {
415 if (method_exists($this->_backend, "list_relations"))
416 return $this->_backend->list_relations($sortby, $limit, $exclude);
417 $iter = $this->getAllPages(false, false, false, $exclude);
418 while ($page = $iter->next()) {
419 $reliter = $page->getRelations();
421 while ($rel = $reliter->next()) {
422 $names[] = $rel->getName();
424 $relations = array_merge($relations, $names);
432 * Call the appropriate backend method.
435 * @param string $from Page to rename
436 * @param string $to New name
437 * @param boolean $updateWikiLinks If the text in all pages should be replaced.
438 * @return boolean true or false
440 function renamePage($from, $to, $updateWikiLinks = false) {
441 assert(is_string($from) && $from != '');
442 assert(is_string($to) && $to != '');
444 if (method_exists($this->_backend, 'rename_page')) {
445 $oldpage = $this->getPage($from);
446 $newpage = $this->getPage($to);
447 //update all WikiLinks in existing pages
448 //non-atomic! i.e. if rename fails the links are not undone
449 if ($updateWikiLinks) {
450 require_once('lib/plugin/WikiAdminSearchReplace.php');
451 $links = $oldpage->getBackLinks();
452 while ($linked_page = $links->next()) {
453 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,
454 $linked_page->getName(),
457 $links = $newpage->getBackLinks();
458 while ($linked_page = $links->next()) {
459 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,
460 $linked_page->getName(),
464 if ($oldpage->exists() and ! $newpage->exists()) {
465 if ($result = $this->_backend->rename_page($from, $to)) {
466 //create a RecentChanges entry with explaining summary
467 $page = $this->getPage($to);
468 $current = $page->getCurrentRevision();
469 $meta = $current->_data;
470 $version = $current->getVersion();
471 $meta['summary'] = sprintf(_("renamed from %s"), $from);
472 $page->save($current->getPackedContent(), $version + 1, $meta);
474 } elseif (!$oldpage->getCurrentRevision(false) and !$newpage->exists()) {
475 // if a version 0 exists try it also.
476 $result = $this->_backend->rename_page($from, $to);
479 trigger_error(_("WikiDB::renamePage() not yet implemented for this backend"),
482 /* Generate notification emails? */
483 if ($result and !isa($GLOBALS['request'], 'MockRequest')) {
484 $notify = $this->get('notify');
485 if (!empty($notify) and is_array($notify)) {
486 include_once("lib/MailNotify.php");
487 $MailNotify = new MailNotify($from);
488 $MailNotify->onRenamePage ($this, $from, $to);
494 /** Get timestamp when database was last modified.
496 * @return string A string consisting of two integers,
497 * separated by a space. The first is the time in
498 * unix timestamp format, the second is a modification
499 * count for the database.
501 * The idea is that you can cast the return value to an
502 * int to get a timestamp, or you can use the string value
503 * as a good hash for the entire database.
505 function getTimestamp() {
506 $ts = $this->get('_timestamp');
507 return sprintf("%d %d", $ts[0], $ts[1]);
511 * Update the database timestamp.
515 $ts = $this->get('_timestamp');
516 $this->set('_timestamp', array(time(), $ts[1] + 1));
521 * Access WikiDB global meta-data.
523 * NOTE: this is currently implemented in a hackish and
524 * not very efficient manner.
528 * @param string $key Which meta data to get.
529 * Some reserved meta-data keys are:
531 * <dt>'_timestamp' <dd> Data used by getTimestamp().
534 * @return scalar The requested value, or false if the requested data
538 if (!$key || $key[0] == '%')
541 * Hack Alert: We can use any page (existing or not) to store
542 * this data (as long as we always use the same one.)
544 $gd = $this->getPage('global_data');
545 $data = $gd->get('__global');
547 if ($data && isset($data[$key]))
554 * Set global meta-data.
556 * NOTE: this is currently implemented in a hackish and
557 * not very efficient manner.
562 * @param string $key Meta-data key to set.
563 * @param string $newval New value.
565 function set($key, $newval) {
566 if (!$key || $key[0] == '%')
569 $gd = $this->getPage('global_data');
570 $data = $gd->get('__global');
577 $data[$key] = $newval;
579 $gd->set('__global', $data);
582 /* TODO: these are really backend methods */
584 // SQL result: for simple select or create/update queries
585 // returns the database specific resource type
586 function genericSqlQuery($sql, $args=false) {
587 if (function_exists('debug_backtrace')) { // >= 4.3.0
588 echo "<pre>", printSimpleTrace(debug_backtrace()), "</pre>\n";
590 trigger_error("no SQL database", E_USER_ERROR);
594 // SQL iter: for simple select or create/update queries
595 // returns the generic iterator object (count,next)
596 function genericSqlIter($sql, $field_list = NULL) {
597 if (function_exists('debug_backtrace')) { // >= 4.3.0
598 echo "<pre>", printSimpleTrace(debug_backtrace()), "</pre>\n";
600 trigger_error("no SQL database", E_USER_ERROR);
604 // see backend upstream methods
605 // ADODB adds surrounding quotes, SQL not yet!
606 function quote ($s) {
612 if (!$request->_dbi) return false;
613 else return false; /* so far only needed for sql so false it.
614 later we have to check dba also */
617 function getParam($param) {
619 if (isset($DBParams[$param])) return $DBParams[$param];
620 elseif ($param == 'prefix') return '';
624 function getAuthParam($param) {
625 global $DBAuthParams;
626 if (isset($DBAuthParams[$param])) return $DBAuthParams[$param];
627 elseif ($param == 'USER_AUTH_ORDER') return $GLOBALS['USER_AUTH_ORDER'];
628 elseif ($param == 'USER_AUTH_POLICY') return $GLOBALS['USER_AUTH_POLICY'];
635 * An abstract base class which representing a wiki-page within a
638 * A WikiDB_Page contains a number (at least one) of
639 * WikiDB_PageRevisions.
643 function WikiDB_Page(&$wikidb, $pagename) {
644 $this->_wikidb = &$wikidb;
645 $this->_pagename = $pagename;
647 if (!(is_string($pagename) and $pagename != '')) {
648 if (function_exists("xdebug_get_function_stack")) {
649 echo "xdebug_get_function_stack(): "; var_dump(xdebug_get_function_stack());
650 } elseif (function_exists("debug_backtrace")) { // >= 4.3.0
651 printSimpleTrace(debug_backtrace());
653 trigger_error("empty pagename", E_USER_WARNING);
657 assert(is_string($pagename) and $pagename != '');
662 * Get the name of the wiki page.
666 * @return string The page name.
669 return $this->_pagename;
672 // To reduce the memory footprint for larger sets of pagelists,
673 // we don't cache the content (only true or false) and
674 // we purge the pagedata (_cached_html) also
676 if (isset($this->_wikidb->_cache->_id_cache[$this->_pagename])) return true;
677 $current = $this->getCurrentRevision(false);
678 if (!$current) return false;
679 return ! $current->hasDefaultContents();
683 * Delete an old revision of a WikiDB_Page.
685 * Deletes the specified revision of the page.
686 * It is a fatal error to attempt to delete the current revision.
690 * @param integer $version Which revision to delete. (You can also
691 * use a WikiDB_PageRevision object here.)
693 function deleteRevision($version) {
694 $backend = &$this->_wikidb->_backend;
695 $cache = &$this->_wikidb->_cache;
696 $pagename = &$this->_pagename;
698 $version = $this->_coerce_to_version($version);
702 $backend->lock(array('page','version'));
703 $latestversion = $cache->get_latest_version($pagename);
704 if ($latestversion && ($version == $latestversion)) {
705 $backend->unlock(array('page','version'));
706 trigger_error(sprintf("Attempt to delete most recent revision of '%s'",
707 $pagename), E_USER_ERROR);
711 $cache->delete_versiondata($pagename, $version);
712 $backend->unlock(array('page','version'));
716 * Delete a revision, or possibly merge it with a previous
720 * Suppose an author make a (major) edit to a page. Shortly
721 * after that the same author makes a minor edit (e.g. to fix
722 * spelling mistakes he just made.)
724 * Now some time later, where cleaning out old saved revisions,
725 * and would like to delete his minor revision (since there's
726 * really no point in keeping minor revisions around for a long
729 * Note that the text after the minor revision probably represents
730 * what the author intended to write better than the text after
731 * the preceding major edit.
733 * So what we really want to do is merge the minor edit with the
736 * We will only do this when:
738 * <li>The revision being deleted is a minor one, and
739 * <li>It has the same author as the immediately preceding revision.
742 function mergeRevision($version) {
743 $backend = &$this->_wikidb->_backend;
744 $cache = &$this->_wikidb->_cache;
745 $pagename = &$this->_pagename;
747 $version = $this->_coerce_to_version($version);
751 $backend->lock(array('version'));
752 $latestversion = $cache->get_latest_version($pagename);
753 if ($latestversion && $version == $latestversion) {
754 $backend->unlock(array('version'));
755 trigger_error(sprintf("Attempt to merge most recent revision of '%s'",
756 $pagename), E_USER_ERROR);
760 $versiondata = $cache->get_versiondata($pagename, $version, true);
762 // Not there? ... we're done!
763 $backend->unlock(array('version'));
767 if ($versiondata['is_minor_edit']) {
768 $previous = $backend->get_previous_version($pagename, $version);
770 $prevdata = $cache->get_versiondata($pagename, $previous);
771 if ($prevdata['author_id'] == $versiondata['author_id']) {
772 // This is a minor revision, previous version is
773 // by the same author. We will merge the
775 $cache->update_versiondata($pagename, $previous,
776 array('%content' => $versiondata['%content'],
777 '_supplanted' => $versiondata['_supplanted']));
782 $cache->delete_versiondata($pagename, $version);
783 $backend->unlock(array('version'));
788 * Create a new revision of a {@link WikiDB_Page}.
792 * @param int $version Version number for new revision.
793 * To ensure proper serialization of edits, $version must be
794 * exactly one higher than the current latest version.
795 * (You can defeat this check by setting $version to
796 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
798 * @param string $content Contents of new revision.
800 * @param hash $metadata Metadata for new revision.
801 * All values in the hash should be scalars (strings or integers).
803 * @param hash $links List of linkto=>pagename, relation=>pagename which this page links to.
805 * @return WikiDB_PageRevision Returns the new WikiDB_PageRevision object. If
806 * $version was incorrect, returns false
808 function createRevision($version, &$content, $metadata, $links) {
809 $backend = &$this->_wikidb->_backend;
810 $cache = &$this->_wikidb->_cache;
811 $pagename = &$this->_pagename;
812 $cache->invalidate_cache($pagename);
814 $backend->lock(array('version','page','recent','link','nonempty'));
816 $latestversion = $backend->get_latest_version($pagename);
817 $newversion = ($latestversion ? $latestversion : 0) + 1;
818 assert($newversion >= 1);
820 if ($version != WIKIDB_FORCE_CREATE and $version != $newversion) {
821 $backend->unlock(array('version','page','recent','link','nonempty'));
827 foreach ($data as $key => $val) {
828 if (empty($val) || $key[0] == '_' || $key[0] == '%')
832 assert(!empty($data['author']));
833 if (empty($data['author_id']))
834 @$data['author_id'] = $data['author'];
836 if (empty($data['mtime']))
837 $data['mtime'] = time();
839 if ($latestversion and $version != WIKIDB_FORCE_CREATE) {
840 // Ensure mtimes are monotonic.
841 $pdata = $cache->get_versiondata($pagename, $latestversion);
842 if ($data['mtime'] < $pdata['mtime']) {
843 trigger_error(sprintf(_("%s: Date of new revision is %s"),
844 $pagename,"'non-monotonic'"),
846 $data['orig_mtime'] = $data['mtime'];
847 $data['mtime'] = $pdata['mtime'];
850 // FIXME: use (possibly user specified) 'mtime' time or
852 $cache->update_versiondata($pagename, $latestversion,
853 array('_supplanted' => $data['mtime']));
856 $data['%content'] = &$content;
858 $cache->set_versiondata($pagename, $newversion, $data);
860 //$cache->update_pagedata($pagename, array(':latestversion' => $newversion,
861 //':deleted' => empty($content)));
863 $backend->set_links($pagename, $links);
865 $backend->unlock(array('version','page','recent','link','nonempty'));
867 return new WikiDB_PageRevision($this->_wikidb, $pagename, $newversion,
871 /** A higher-level interface to createRevision.
873 * This takes care of computing the links, and storing
874 * a cached version of the transformed wiki-text.
876 * @param string $wikitext The page content.
878 * @param int $version Version number for new revision.
879 * To ensure proper serialization of edits, $version must be
880 * exactly one higher than the current latest version.
881 * (You can defeat this check by setting $version to
882 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
884 * @param hash $meta Meta-data for new revision.
886 function save($wikitext, $version, $meta) {
887 $formatted = new TransformedText($this, $wikitext, $meta);
888 $type = $formatted->getType();
889 $meta['pagetype'] = $type->getName();
890 $links = $formatted->getWikiPageLinks(); // linkto => relation
892 $backend = &$this->_wikidb->_backend;
893 $newrevision = $this->createRevision($version, $wikitext, $meta, $links);
894 if ($newrevision and !WIKIDB_NOCACHE_MARKUP)
895 $this->set('_cached_html', $formatted->pack());
897 // FIXME: probably should have some global state information
898 // in the backend to control when to optimize.
900 // We're doing this here rather than in createRevision because
901 // postgresql can't optimize while locked.
902 if (((int)DEBUG & _DEBUG_SQL)
903 or (DATABASE_OPTIMISE_FREQUENCY > 0 and
904 (time() % DATABASE_OPTIMISE_FREQUENCY == 0))) {
905 if ($backend->optimize()) {
907 trigger_error(_("Optimizing database"), E_USER_NOTICE);
911 /* Generate notification emails? */
912 if (isa($newrevision, 'WikiDB_PageRevision')) {
913 // Save didn't fail because of concurrent updates.
914 $notify = $this->_wikidb->get('notify');
915 if (!empty($notify) and is_array($notify) and !isa($GLOBALS['request'],'MockRequest')) {
916 include_once("lib/MailNotify.php");
917 $MailNotify = new MailNotify($newrevision->getName());
918 $MailNotify->onChangePage ($this, $wikitext, $version, $meta);
920 $newrevision->_transformedContent = $formatted;
927 * Get the most recent revision of a page.
931 * @return WikiDB_PageRevision The current WikiDB_PageRevision object.
933 function getCurrentRevision ($need_content = true) {
934 $backend = &$this->_wikidb->_backend;
935 $cache = &$this->_wikidb->_cache;
936 $pagename = &$this->_pagename;
938 // Prevent deadlock in case of memory exhausted errors
939 // Pure selection doesn't really need locking here.
941 // I know it would be better to lock, but with lots of pages this deadlock is more
942 // severe than occasionally get not the latest revision.
943 // In spirit to wikiwiki: read fast, edit slower.
945 $version = $cache->get_latest_version($pagename);
946 // getRevision gets the content also!
947 $revision = $this->getRevision($version, $need_content);
948 //$backend->unlock();
954 * Get a specific revision of a WikiDB_Page.
958 * @param integer $version Which revision to get.
960 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or
961 * false if the requested revision does not exist in the {@link WikiDB}.
962 * Note that version zero of any page always exists.
964 function getRevision ($version, $need_content=true) {
965 $cache = &$this->_wikidb->_cache;
966 $pagename = &$this->_pagename;
968 if (! $version or $version == -1) // 0 or false
969 return new WikiDB_PageRevision($this->_wikidb, $pagename, 0);
971 assert($version > 0);
972 $vdata = $cache->get_versiondata($pagename, $version, $need_content);
974 return new WikiDB_PageRevision($this->_wikidb, $pagename, 0);
976 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
981 * Get previous page revision.
983 * This method find the most recent revision before a specified
988 * @param integer $version Find most recent revision before this version.
989 * You can also use a WikiDB_PageRevision object to specify the $version.
991 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or false if the
992 * requested revision does not exist in the {@link WikiDB}. Note that
993 * unless $version is greater than zero, a revision (perhaps version zero,
994 * the default revision) will always be found.
996 function getRevisionBefore ($version=false, $need_content=true) {
997 $backend = &$this->_wikidb->_backend;
998 $pagename = &$this->_pagename;
999 if ($version === false)
1000 $version = $this->_wikidb->_cache->get_latest_version($pagename);
1002 $version = $this->_coerce_to_version($version);
1007 $previous = $backend->get_previous_version($pagename, $version);
1008 $revision = $this->getRevision($previous, $need_content);
1009 //$backend->unlock();
1015 * Get all revisions of the WikiDB_Page.
1017 * This does not include the version zero (default) revision in the
1018 * returned revision set.
1020 * @return WikiDB_PageRevisionIterator A
1021 * WikiDB_PageRevisionIterator containing all revisions of this
1022 * WikiDB_Page in reverse order by version number.
1024 function getAllRevisions() {
1025 $backend = &$this->_wikidb->_backend;
1026 $revs = $backend->get_all_revisions($this->_pagename);
1027 return new WikiDB_PageRevisionIterator($this->_wikidb, $revs);
1031 * Find pages which link to or are linked from a page.
1032 * relations: $backend->get_links is responsible to add the relation to the pagehash
1033 * as 'linkrelation' key as pagename. See WikiDB_PageIterator::next
1034 * if (isset($next['linkrelation']))
1038 * @param boolean $reversed Which links to find: true for backlinks (default).
1040 * @return WikiDB_PageIterator A WikiDB_PageIterator containing
1041 * all matching pages.
1043 function getLinks ($reversed = true, $include_empty=false, $sortby=false,
1044 $limit=false, $exclude=false, $want_relations=false)
1046 $backend = &$this->_wikidb->_backend;
1047 $result = $backend->get_links($this->_pagename, $reversed,
1048 $include_empty, $sortby, $limit, $exclude,
1050 return new WikiDB_PageIterator($this->_wikidb, $result,
1051 array('include_empty' => $include_empty,
1052 'sortby' => $sortby,
1054 'exclude' => $exclude,
1055 'want_relations'=> $want_relations));
1059 * All Links from other pages to this page.
1061 function getBackLinks($include_empty=false, $sortby=false, $limit=false, $exclude=false,
1062 $want_relations=false)
1064 return $this->getLinks(true, $include_empty, $sortby, $limit, $exclude);
1067 * Forward Links: All Links from this page to other pages.
1069 function getPageLinks($include_empty=false, $sortby=false, $limit=false, $exclude=false,
1070 $want_relations=false)
1072 return $this->getLinks(false, $include_empty, $sortby, $limit, $exclude);
1075 * Relations: All links from this page to other pages with relation <> 0.
1078 function getRelations($sortby=false, $limit=false, $exclude=false) {
1079 $backend = &$this->_wikidb->_backend;
1080 $result = $backend->get_links($this->_pagename, false, true,
1081 $sortby, $limit, $exclude,
1083 // we do not care for the linked page versiondata, just the pagename and linkrelation
1084 return new WikiDB_PageIterator($this->_wikidb, $result,
1085 array('include_empty' => true,
1086 'sortby' => $sortby,
1088 'exclude' => $exclude,
1089 'want_relations'=> true));
1093 * possibly faster link existance check. not yet accelerated.
1095 function existLink($link, $reversed=false) {
1096 $backend = &$this->_wikidb->_backend;
1097 if (method_exists($backend,'exists_link'))
1098 return $backend->exists_link($this->_pagename, $link, $reversed);
1099 //$cache = &$this->_wikidb->_cache;
1100 // TODO: check cache if it is possible
1101 $iter = $this->getLinks($reversed, false);
1102 while ($page = $iter->next()) {
1103 if ($page->getName() == $link)
1110 /* Semantic relations are links with the relation pointing to another page,
1111 the so-called "RDF Triple".
1112 [San Diego] is%20a::city
1113 => "At the page San Diego there is a relation link of 'is a' to the page 'city'."
1116 /* Semantic attributes for a page.
1117 [San Diego] population:=1,305,736
1118 Attributes are links with the relation pointing to another page.
1122 * Access WikiDB_Page non version-specific meta-data.
1126 * @param string $key Which meta data to get.
1127 * Some reserved meta-data keys are:
1129 * <dt>'date' <dd> Created as unixtime
1130 * <dt>'locked'<dd> Is page locked? 'yes' or 'no'
1131 * <dt>'hits' <dd> Page hit counter.
1132 * <dt>'_cached_html' <dd> Transformed CachedMarkup object, serialized + optionally gzipped.
1133 * In SQL stored now in an extra column.
1135 * <dt>'pref' <dd> Users preferences, stored only in homepages.
1136 * <dt>'owner' <dd> Default: first author_id. We might add a group with a dot here:
1137 * E.g. "owner.users"
1138 * <dt>'perm' <dd> Permission flag to authorize read/write/execution of
1139 * page-headers and content.
1140 + <dt>'moderation'<dd> ModeratedPage data
1141 * <dt>'score' <dd> Page score (not yet implement, do we need?)
1144 * @return scalar The requested value, or false if the requested data
1147 function get($key) {
1148 $cache = &$this->_wikidb->_cache;
1149 $backend = &$this->_wikidb->_backend;
1150 if (!$key || $key[0] == '%')
1152 // several new SQL backends optimize this.
1153 if (!WIKIDB_NOCACHE_MARKUP
1154 and $key == '_cached_html'
1155 and method_exists($backend, 'get_cached_html'))
1157 return $backend->get_cached_html($this->_pagename);
1159 $data = $cache->get_pagedata($this->_pagename);
1160 return isset($data[$key]) ? $data[$key] : false;
1164 * Get all the page meta-data as a hash.
1166 * @return hash The page meta-data.
1168 function getMetaData() {
1169 $cache = &$this->_wikidb->_cache;
1170 $data = $cache->get_pagedata($this->_pagename);
1172 foreach ($data as $key => $val) {
1173 if (/*!empty($val) &&*/ $key[0] != '%')
1180 * Set page meta-data.
1185 * @param string $key Meta-data key to set.
1186 * @param string $newval New value.
1188 function set($key, $newval) {
1189 $cache = &$this->_wikidb->_cache;
1190 $backend = &$this->_wikidb->_backend;
1191 $pagename = &$this->_pagename;
1193 assert($key && $key[0] != '%');
1195 // several new SQL backends optimize this.
1196 if (!WIKIDB_NOCACHE_MARKUP
1197 and $key == '_cached_html'
1198 and method_exists($backend, 'set_cached_html'))
1200 return $backend->set_cached_html($pagename, $newval);
1203 $data = $cache->get_pagedata($pagename);
1205 if (!empty($newval)) {
1206 if (!empty($data[$key]) && $data[$key] == $newval)
1207 return; // values identical, skip update.
1210 if (empty($data[$key]))
1211 return; // values identical, skip update.
1214 $cache->update_pagedata($pagename, array($key => $newval));
1218 * Increase page hit count.
1220 * FIXME: IS this needed? Probably not.
1222 * This is a convenience function.
1223 * <pre> $page->increaseHitCount(); </pre>
1224 * is functionally identical to
1225 * <pre> $page->set('hits',$page->get('hits')+1); </pre>
1226 * but less expensive (ignores the pagadata string)
1228 * Note that this method may be implemented in more efficient ways
1229 * in certain backends.
1233 function increaseHitCount() {
1234 if (method_exists($this->_wikidb->_backend, 'increaseHitCount'))
1235 $this->_wikidb->_backend->increaseHitCount($this->_pagename);
1237 @$newhits = $this->get('hits') + 1;
1238 $this->set('hits', $newhits);
1243 * Return a string representation of the WikiDB_Page
1245 * This is really only for debugging.
1249 * @return string Printable representation of the WikiDB_Page.
1251 function asString () {
1253 printf("[%s:%s\n", get_class($this), $this->getName());
1254 print_r($this->getMetaData());
1256 $strval = ob_get_contents();
1264 * @param integer_or_object $version_or_pagerevision
1265 * Takes either the version number (and int) or a WikiDB_PageRevision
1267 * @return integer The version number.
1269 function _coerce_to_version($version_or_pagerevision) {
1270 if (method_exists($version_or_pagerevision, "getContent"))
1271 $version = $version_or_pagerevision->getVersion();
1273 $version = (int) $version_or_pagerevision;
1275 assert($version >= 0);
1279 function isUserPage ($include_empty = true) {
1280 if (!$include_empty and !$this->exists()) return false;
1281 return $this->get('pref') ? true : false;
1284 // May be empty. Either the stored owner (/Chown), or the first authorized author
1285 function getOwner() {
1286 if ($owner = $this->get('owner'))
1287 return ($owner == _("The PhpWiki programming team")) ? ADMIN_USER : $owner;
1288 // check all revisions forwards for the first author_id
1289 $backend = &$this->_wikidb->_backend;
1290 $pagename = &$this->_pagename;
1291 $latestversion = $backend->get_latest_version($pagename);
1292 for ($v=1; $v <= $latestversion; $v++) {
1293 $rev = $this->getRevision($v,false);
1294 if ($rev and $owner = $rev->get('author_id')) {
1295 return ($owner == _("The PhpWiki programming team")) ? ADMIN_USER : $owner;
1301 // The authenticated author of the first revision or empty if not authenticated then.
1302 function getCreator() {
1303 if ($current = $this->getRevision(1,false)) return $current->get('author_id');
1307 // The authenticated author of the current revision.
1308 function getAuthor() {
1309 if ($current = $this->getCurrentRevision(false)) return $current->get('author_id');
1316 * This class represents a specific revision of a WikiDB_Page within
1319 * A WikiDB_PageRevision has read-only semantics. You may only create
1320 * new revisions (and delete old ones) --- you cannot modify existing
1323 class WikiDB_PageRevision
1325 //var $_transformedContent = false; // set by WikiDB_Page::save()
1327 function WikiDB_PageRevision(&$wikidb, $pagename, $version, $versiondata = false) {
1328 $this->_wikidb = &$wikidb;
1329 $this->_pagename = $pagename;
1330 $this->_version = $version;
1331 $this->_data = $versiondata ? $versiondata : array();
1332 $this->_transformedContent = false; // set by WikiDB_Page::save()
1336 * Get the WikiDB_Page which this revision belongs to.
1340 * @return WikiDB_Page The WikiDB_Page which this revision belongs to.
1342 function getPage() {
1343 return new WikiDB_Page($this->_wikidb, $this->_pagename);
1347 * Get the version number of this revision.
1351 * @return integer The version number of this revision.
1353 function getVersion() {
1354 return $this->_version;
1358 * Determine whether this revision has defaulted content.
1360 * The default revision (version 0) of each page, as well as any
1361 * pages which are created with empty content have their content
1362 * defaulted to something like:
1364 * Describe [ThisPage] here.
1369 * @return boolean Returns true if the page has default content.
1371 function hasDefaultContents() {
1372 $data = &$this->_data;
1373 return empty($data['%content']); // FIXME: what if it's the number 0? <>'' or === false
1377 * Get the content as an array of lines.
1381 * @return array An array of lines.
1382 * The lines should contain no trailing white space.
1384 function getContent() {
1385 return explode("\n", $this->getPackedContent());
1389 * Get the pagename of the revision.
1393 * @return string pagename.
1395 function getPageName() {
1396 return $this->_pagename;
1398 function getName() {
1399 return $this->_pagename;
1403 * Determine whether revision is the latest.
1407 * @return boolean True iff the revision is the latest (most recent) one.
1409 function isCurrent() {
1410 if (!isset($this->_iscurrent)) {
1411 $page = $this->getPage();
1412 $current = $page->getCurrentRevision(false);
1413 $this->_iscurrent = $this->getVersion() == $current->getVersion();
1415 return $this->_iscurrent;
1419 * Get the transformed content of a page.
1421 * @param string $pagetype Override the page-type of the revision.
1423 * @return object An XmlContent-like object containing the page transformed
1426 function getTransformedContent($pagetype_override=false) {
1427 $backend = &$this->_wikidb->_backend;
1429 if ($pagetype_override) {
1430 // Figure out the normal page-type for this page.
1431 $type = PageType::GetPageType($this->get('pagetype'));
1432 if ($type->getName() == $pagetype_override)
1433 $pagetype_override = false; // Not really an override...
1436 if ($pagetype_override) {
1437 // Overriden page type, don't cache (or check cache).
1438 return new TransformedText($this->getPage(),
1439 $this->getPackedContent(),
1440 $this->getMetaData(),
1441 $pagetype_override);
1444 $possibly_cache_results = true;
1446 if (!USECACHE or WIKIDB_NOCACHE_MARKUP) {
1447 if (WIKIDB_NOCACHE_MARKUP == 'purge') {
1448 // flush cache for this page.
1449 $page = $this->getPage();
1450 $page->set('_cached_html', ''); // ignored with !USECACHE
1452 $possibly_cache_results = false;
1454 elseif (USECACHE and !$this->_transformedContent) {
1456 if ($this->isCurrent()) {
1457 $page = $this->getPage();
1458 $this->_transformedContent = TransformedText::unpack($page->get('_cached_html'));
1461 $possibly_cache_results = false;
1463 //$backend->unlock();
1466 if (!$this->_transformedContent) {
1467 $this->_transformedContent
1468 = new TransformedText($this->getPage(),
1469 $this->getPackedContent(),
1470 $this->getMetaData());
1472 if ($possibly_cache_results and !WIKIDB_NOCACHE_MARKUP) {
1473 // If we're still the current version, cache the transfomed page.
1475 if ($this->isCurrent()) {
1476 $page->set('_cached_html', $this->_transformedContent->pack());
1478 //$backend->unlock();
1482 return $this->_transformedContent;
1486 * Get the content as a string.
1490 * @return string The page content.
1491 * Lines are separated by new-lines.
1493 function getPackedContent() {
1494 $data = &$this->_data;
1497 if (empty($data['%content'])) {
1498 include_once('lib/InlineParser.php');
1500 // A feature similar to taglines at http://www.wlug.org.nz/
1501 // Lib from http://www.aasted.org/quote/
1502 if (defined('FORTUNE_DIR')
1503 and is_dir(FORTUNE_DIR)
1504 and in_array($GLOBALS['request']->getArg('action'),
1505 array('create','edit')))
1507 include_once("lib/fortune.php");
1508 $fortune = new Fortune();
1509 $quote = str_replace("\n<br>","\n", $fortune->quoteFromDir(FORTUNE_DIR));
1510 return sprintf("<verbatim>\n%s</verbatim>\n\n"._("Describe %s here."),
1511 $quote, "[" . WikiEscape($this->_pagename) . "]");
1513 // Replace empty content with default value.
1514 return sprintf(_("Describe %s here."),
1515 "[" . WikiEscape($this->_pagename) . "]");
1518 // There is (non-default) content.
1519 assert($this->_version > 0);
1521 if (!is_string($data['%content'])) {
1522 // Content was not provided to us at init time.
1523 // (This is allowed because for some backends, fetching
1524 // the content may be expensive, and often is not wanted
1527 // In any case, now we need to get it.
1528 $data['%content'] = $this->_get_content();
1529 assert(is_string($data['%content']));
1532 return $data['%content'];
1535 function _get_content() {
1536 $cache = &$this->_wikidb->_cache;
1537 $pagename = $this->_pagename;
1538 $version = $this->_version;
1540 assert($version > 0);
1542 $newdata = $cache->get_versiondata($pagename, $version, true);
1544 assert(is_string($newdata['%content']));
1545 return $newdata['%content'];
1548 // else revision has been deleted... What to do?
1549 return __sprintf("Oops! Revision %s of %s seems to have been deleted!",
1550 $version, $pagename);
1555 * Get meta-data for this revision.
1560 * @param string $key Which meta-data to access.
1562 * Some reserved revision meta-data keys are:
1564 * <dt> 'mtime' <dd> Time this revision was created (seconds since midnight Jan 1, 1970.)
1565 * The 'mtime' meta-value is normally set automatically by the database
1566 * backend, but it may be specified explicitly when creating a new revision.
1568 * <dd> To ensure consistency of RecentChanges, the mtimes of the versions
1569 * of a page must be monotonically increasing. If an attempt is
1570 * made to create a new revision with an mtime less than that of
1571 * the preceeding revision, the new revisions timestamp is force
1572 * to be equal to that of the preceeding revision. In that case,
1573 * the originally requested mtime is preserved in 'orig_mtime'.
1574 * <dt> '_supplanted' <dd> Time this revision ceased to be the most recent.
1575 * This meta-value is <em>always</em> automatically maintained by the database
1576 * backend. (It is set from the 'mtime' meta-value of the superceding
1577 * revision.) '_supplanted' has a value of 'false' for the current revision.
1579 * FIXME: this could be refactored:
1581 * <dd> Author of the page (as he should be reported in, e.g. RecentChanges.)
1583 * <dd> Authenticated author of a page. This is used to identify
1584 * the distinctness of authors when cleaning old revisions from
1586 * <dt> 'is_minor_edit' <dd> Set if change was marked as a minor revision by the author.
1587 * <dt> 'summary' <dd> Short change summary entered by page author.
1590 * Meta-data keys must be valid C identifers (they have to start with a letter
1591 * or underscore, and can contain only alphanumerics and underscores.)
1593 * @return string The requested value, or false if the requested value
1596 function get($key) {
1597 if (!$key || $key[0] == '%')
1599 $data = &$this->_data;
1600 return isset($data[$key]) ? $data[$key] : false;
1604 * Get all the revision page meta-data as a hash.
1606 * @return hash The revision meta-data.
1608 function getMetaData() {
1610 foreach ($this->_data as $key => $val) {
1611 if (!empty($val) && $key[0] != '%')
1619 * Return a string representation of the revision.
1621 * This is really only for debugging.
1625 * @return string Printable representation of the WikiDB_Page.
1627 function asString () {
1629 printf("[%s:%d\n", get_class($this), $this->get('version'));
1630 print_r($this->_data);
1631 echo $this->getPackedContent() . "\n]\n";
1632 $strval = ob_get_contents();
1640 * Class representing a sequence of WikiDB_Pages.
1641 * TODO: Enhance to php5 iterators
1643 * apply filters for options like 'sortby', 'limit', 'exclude'
1644 * for simple queries like titleSearch, where the backend is not ready yet.
1646 class WikiDB_PageIterator
1648 function WikiDB_PageIterator(&$wikidb, &$iter, $options=false) {
1649 $this->_iter = $iter; // a WikiDB_backend_iterator
1650 $this->_wikidb = &$wikidb;
1651 $this->_options = $options;
1655 return $this->_iter->count();
1659 * Get next WikiDB_Page in sequence.
1663 * @return WikiDB_Page The next WikiDB_Page in the sequence.
1666 if ( ! ($next = $this->_iter->next()) )
1669 $pagename = &$next['pagename'];
1670 if (!is_string($pagename)) { // Bug #1327912 fixed by Joachim Lous
1671 $pagename = strval($pagename);
1674 trigger_error('empty pagename in WikiDB_PageIterator::next()', E_USER_WARNING);
1678 // There's always hits, but we cache only if more
1679 // (well not with file, cvs and dba)
1680 if (isset($next['pagedata']) and count($next['pagedata']) > 1) {
1681 $this->_wikidb->_cache->cache_data($next);
1682 // cache existing page id's since we iterate over all links in GleanDescription
1683 // and need them later for LinkExistingWord
1684 } elseif ($this->_options and array_key_exists('include_empty', $this->_options)
1685 and !$this->_options['include_empty'] and isset($next['id'])) {
1686 $this->_wikidb->_cache->_id_cache[$next['pagename']] = $next['id'];
1688 $page = new WikiDB_Page($this->_wikidb, $pagename);
1689 if (isset($next['linkrelation']))
1690 $page->set('linkrelation', $next['linkrelation']);
1695 * Release resources held by this iterator.
1697 * The iterator may not be used after free() is called.
1699 * There is no need to call free(), if next() has returned false.
1700 * (I.e. if you iterate through all the pages in the sequence,
1701 * you do not need to call free() --- you only need to call it
1702 * if you stop before the end of the iterator is reached.)
1707 $this->_iter->free();
1710 function asArray() {
1712 while ($page = $this->next())
1719 * Apply filters for options like 'sortby', 'limit', 'exclude'
1720 * for simple queries like titleSearch, where the backend is not ready yet.
1721 * Since iteration is usually destructive for SQL results,
1722 * we have to generate a copy.
1724 function applyFilters($options = false) {
1725 if (!$options) $options = $this->_options;
1726 if (isset($options['sortby'])) {
1728 /* this is destructive */
1729 while ($page = $this->next())
1730 $result[] = $page->getName();
1731 $this->_doSort($array, $options['sortby']);
1733 /* the rest is not destructive.
1734 * reconstruct a new iterator
1736 $pagenames = array(); $i = 0;
1737 if (isset($options['limit']))
1738 $limit = $options['limit'];
1741 if (isset($options['exclude']))
1742 $exclude = $options['exclude'];
1743 if (is_string($exclude) and !is_array($exclude))
1744 $exclude = PageList::explodePageList($exclude, false, false, $limit);
1745 foreach($array as $pagename) {
1746 if ($limit and $i++ > $limit)
1747 return new WikiDB_Array_PageIterator($pagenames);
1748 if (!empty($exclude) and !in_array($pagename, $exclude))
1749 $pagenames[] = $pagename;
1750 elseif (empty($exclude))
1751 $pagenames[] = $pagename;
1753 return new WikiDB_Array_PageIterator($pagenames);
1757 function _doSort(&$array, $sortby) {
1758 $sortby = PageList::sortby($sortby, 'init');
1759 if ($sortby == '+pagename')
1760 sort($array, SORT_STRING);
1761 elseif ($sortby == '-pagename')
1762 rsort($array, SORT_STRING);
1769 * A class which represents a sequence of WikiDB_PageRevisions.
1770 * TODO: Enhance to php5 iterators
1772 class WikiDB_PageRevisionIterator
1774 function WikiDB_PageRevisionIterator(&$wikidb, &$revisions, $options=false) {
1775 $this->_revisions = $revisions;
1776 $this->_wikidb = &$wikidb;
1777 $this->_options = $options;
1781 return $this->_revisions->count();
1785 * Get next WikiDB_PageRevision in sequence.
1789 * @return WikiDB_PageRevision
1790 * The next WikiDB_PageRevision in the sequence.
1793 if ( ! ($next = $this->_revisions->next()) )
1796 //$this->_wikidb->_cache->cache_data($next);
1798 $pagename = $next['pagename'];
1799 $version = $next['version'];
1800 $versiondata = $next['versiondata'];
1802 if (!(is_string($pagename) and $pagename != '')) {
1803 trigger_error("empty pagename",E_USER_WARNING);
1806 } else assert(is_string($pagename) and $pagename != '');
1808 if (!is_array($versiondata)) {
1809 trigger_error("empty versiondata",E_USER_WARNING);
1812 } else assert(is_array($versiondata));
1814 if (!($version > 0)) {
1815 trigger_error("invalid version",E_USER_WARNING);
1818 } else assert($version > 0);
1820 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
1825 * Release resources held by this iterator.
1827 * The iterator may not be used after free() is called.
1829 * There is no need to call free(), if next() has returned false.
1830 * (I.e. if you iterate through all the revisions in the sequence,
1831 * you do not need to call free() --- you only need to call it
1832 * if you stop before the end of the iterator is reached.)
1837 $this->_revisions->free();
1840 function asArray() {
1842 while ($rev = $this->next())
1851 class WikiDB_Array_PageIterator
1853 function WikiDB_Array_PageIterator($pagenames) {
1855 $this->_dbi = $request->getDbh();
1856 $this->_pages = $pagenames;
1857 reset($this->_pages);
1860 $c =& current($this->_pages);
1861 next($this->_pages);
1862 return $c !== false ? $this->_dbi->getPage($c) : false;
1865 return count($this->_pages);
1868 function asArray() {
1869 reset($this->_pages);
1870 return $this->_pages;
1874 class WikiDB_Array_generic_iter
1876 function WikiDB_Array_generic_iter($result) {
1877 // $result may be either an array or a query result
1878 if (is_array($result)) {
1879 $this->_array = $result;
1880 } elseif (is_object($result)) {
1881 $this->_array = $result->asArray();
1883 $this->_array = array();
1885 if (!empty($this->_array))
1886 reset($this->_array);
1889 $c =& current($this->_array);
1890 next($this->_array);
1891 return $c !== false ? $c : false;
1894 return count($this->_array);
1897 function asArray() {
1898 if (!empty($this->_array))
1899 reset($this->_array);
1900 return $this->_array;
1905 * Data cache used by WikiDB.
1907 * FIXME: Maybe rename this to caching_backend (or some such).
1913 // FIXME: beautify versiondata cache. Cache only limited data?
1915 function WikiDB_cache (&$backend) {
1916 $this->_backend = &$backend;
1918 $this->_pagedata_cache = array();
1919 $this->_versiondata_cache = array();
1920 array_push ($this->_versiondata_cache, array());
1921 $this->_glv_cache = array();
1922 $this->_id_cache = array(); // formerly ->_dbi->_iwpcache (nonempty pages => id)
1926 $this->_pagedata_cache = array();
1927 $this->_versiondata_cache = array();
1928 $this->_glv_cache = array();
1929 $this->_id_cache = array();
1932 function get_pagedata($pagename) {
1933 assert(is_string($pagename) && $pagename != '');
1935 $cache = &$this->_pagedata_cache;
1936 if (!isset($cache[$pagename]) || !is_array($cache[$pagename])) {
1937 $cache[$pagename] = $this->_backend->get_pagedata($pagename);
1938 if (empty($cache[$pagename]))
1939 $cache[$pagename] = array();
1941 return $cache[$pagename];
1943 return $this->_backend->get_pagedata($pagename);
1947 function update_pagedata($pagename, $newdata) {
1948 assert(is_string($pagename) && $pagename != '');
1950 $this->_backend->update_pagedata($pagename, $newdata);
1953 if (!empty($this->_pagedata_cache[$pagename])
1954 and is_array($this->_pagedata_cache[$pagename]))
1956 $cachedata = &$this->_pagedata_cache[$pagename];
1957 foreach($newdata as $key => $val)
1958 $cachedata[$key] = $val;
1960 $this->_pagedata_cache[$pagename] = $newdata;
1964 function invalidate_cache($pagename) {
1965 unset ($this->_pagedata_cache[$pagename]);
1966 unset ($this->_versiondata_cache[$pagename]);
1967 unset ($this->_glv_cache[$pagename]);
1968 unset ($this->_id_cache[$pagename]);
1969 //unset ($this->_backend->_page_data);
1972 function delete_page($pagename) {
1973 $result = $this->_backend->delete_page($pagename);
1974 $this->invalidate_cache($pagename);
1978 function purge_page($pagename) {
1979 $result = $this->_backend->purge_page($pagename);
1980 $this->invalidate_cache($pagename);
1984 // FIXME: ugly and wrong. may overwrite full cache with partial cache
1985 function cache_data($data) {
1987 //if (isset($data['pagedata']))
1988 // $this->_pagedata_cache[$data['pagename']] = $data['pagedata'];
1991 function get_versiondata($pagename, $version, $need_content = false) {
1992 // FIXME: Seriously ugly hackage
1994 if (USECACHE) { //temporary - for debugging
1995 assert(is_string($pagename) && $pagename != '');
1996 // There is a bug here somewhere which results in an assertion failure at line 105
1997 // of ArchiveCleaner.php It goes away if we use the next line.
1998 //$need_content = true;
1999 $nc = $need_content ? '1':'0';
2000 $cache = &$this->_versiondata_cache;
2001 if (!isset($cache[$pagename][$version][$nc])
2002 || !(is_array ($cache[$pagename]))
2003 || !(is_array ($cache[$pagename][$version])))
2005 $cache[$pagename][$version][$nc] =
2006 $this->_backend->get_versiondata($pagename, $version, $need_content);
2008 // If we have retrieved all data, we may as well set the cache for
2009 // $need_content = false
2011 $cache[$pagename][$version]['0'] =& $cache[$pagename][$version]['1'];
2014 $vdata = $cache[$pagename][$version][$nc];
2016 $vdata = $this->_backend->get_versiondata($pagename, $version, $need_content);
2019 if ($readdata && $vdata && !empty($vdata['%pagedata'])) {
2020 $this->_pagedata_cache[$pagename] =& $vdata['%pagedata'];
2025 function set_versiondata($pagename, $version, $data) {
2026 //unset($this->_versiondata_cache[$pagename][$version]);
2028 $new = $this->_backend->set_versiondata($pagename, $version, $data);
2030 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2031 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2032 // Is this necessary?
2033 unset($this->_glv_cache[$pagename]);
2036 function update_versiondata($pagename, $version, $data) {
2037 $new = $this->_backend->update_versiondata($pagename, $version, $data);
2039 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2041 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2042 // Is this necessary?
2043 unset($this->_glv_cache[$pagename]);
2046 function delete_versiondata($pagename, $version) {
2047 $new = $this->_backend->delete_versiondata($pagename, $version);
2048 if (isset($this->_versiondata_cache[$pagename][$version]))
2049 unset ($this->_versiondata_cache[$pagename][$version]);
2050 // dirty latest version cache only if latest version gets deleted
2051 if (isset($this->_glv_cache[$pagename]) and $this->_glv_cache[$pagename] == $version)
2052 unset ($this->_glv_cache[$pagename]);
2055 function get_latest_version($pagename) {
2057 assert (is_string($pagename) && $pagename != '');
2058 $cache = &$this->_glv_cache;
2059 if (!isset($cache[$pagename])) {
2060 $cache[$pagename] = $this->_backend->get_latest_version($pagename);
2061 if (empty($cache[$pagename]))
2062 $cache[$pagename] = 0;
2064 return $cache[$pagename];
2066 return $this->_backend->get_latest_version($pagename);
2071 function _sql_debuglog($msg, $newline=true, $shutdown=false) {
2075 $stamp = strftime("%y%m%d-%H%M%S");
2076 $fp = fopen("/tmp/sql-$stamp.log", "a");
2077 register_shutdown_function("_sql_debuglog_shutdown_function");
2078 } elseif ($shutdown) {
2082 if ($newline) fputs($fp, "[$i++] $msg");
2083 else fwrite($fp, $msg);
2086 function _sql_debuglog_shutdown_function() {
2087 _sql_debuglog('',false,true);
2090 // $Log: not supported by cvs2svn $
2091 // Revision 1.144 2006/10/12 06:36:09 rurban
2092 // Guard against unwanted DEBUG="DEBUG" logic. In detail (WikiDB),
2093 // and generally by forcing all int constants to be defined as int.
2095 // Revision 1.143 2006/09/06 05:46:40 rurban
2096 // do db backend check on _DEBUG_SQL
2098 // Revision 1.142 2006/06/10 11:55:58 rurban
2099 // print optimize only when DEBUG
2101 // Revision 1.141 2006/04/17 17:28:21 rurban
2102 // honor getWikiPageLinks change linkto=>relation
2104 // Revision 1.140 2006/03/19 14:23:51 rurban
2105 // sf.net patch #1377011 by Matt Brown: add DATABASE_OPTIMISE_FREQUENCY
2107 // Revision 1.139 2006/01/12 16:38:07 rurban
2108 // add page method listRelations()
2109 // fix bug #1327912 numeric pagenames can break plugins (Joachim Lous)
2111 // Revision 1.138 2005/11/14 22:27:07 rurban
2112 // add linkrelation support
2113 // getPageLinks returns now an array of hashes
2114 // pass stoplist through iterator
2116 // Revision 1.137 2005/10/12 06:16:18 rurban
2117 // better From header
2119 // Revision 1.136 2005/10/03 16:14:57 rurban
2120 // improve description
2122 // Revision 1.135 2005/09/11 14:19:44 rurban
2123 // enable LIMIT support for fulltext search
2125 // Revision 1.134 2005/09/10 21:28:10 rurban
2126 // applyFilters hack to use filters after methods, which do not support them (titleSearch)
2128 // Revision 1.133 2005/08/27 09:39:10 rurban
2129 // dumphtml when not at admin page: dump the current or given page
2131 // Revision 1.132 2005/08/07 10:10:07 rurban
2132 // clean whole version cache
2134 // Revision 1.131 2005/04/23 11:30:12 rurban
2135 // allow emtpy WikiDB::getRevisionBefore(), for simplier templates (revert)
2137 // Revision 1.130 2005/04/06 06:19:30 rurban
2138 // Revert the previous wrong bugfix #1175761: USECACHE was mixed with WIKIDB_NOCACHE_MARKUP.
2139 // Fix WIKIDB_NOCACHE_MARKUP in main (always set it) and clarify it in WikiDB
2141 // Revision 1.129 2005/04/06 05:50:29 rurban
2142 // honor !USECACHE for _cached_html, fixes #1175761
2144 // Revision 1.128 2005/04/01 16:11:42 rurban
2147 // Revision 1.127 2005/02/18 20:43:40 uckelman
2148 // WikiDB::genericWarnings() is no longer used.
2150 // Revision 1.126 2005/02/04 17:58:06 rurban
2151 // minor versioncache improvement. part 2/3 of Charles Corrigan cache patch. not sure about the 0/1 issue
2153 // Revision 1.125 2005/02/03 05:08:39 rurban
2154 // ref fix by Charles Corrigan
2156 // Revision 1.124 2005/01/29 20:43:32 rurban
2157 // protect against empty request: on some occasion this happens
2159 // Revision 1.123 2005/01/25 06:58:21 rurban
2162 // Revision 1.122 2005/01/20 10:18:17 rurban
2165 // Revision 1.121 2005/01/04 20:25:01 rurban
2166 // remove old [%pagedata][_cached_html] code
2168 // Revision 1.120 2004/12/23 14:12:31 rurban
2169 // dont email on unittest
2171 // Revision 1.119 2004/12/20 16:05:00 rurban
2172 // gettext msg unification
2174 // Revision 1.118 2004/12/13 13:22:57 rurban
2175 // new BlogArchives plugin for the new blog theme. enable default box method
2176 // for all plugins. Minor search improvement.
2178 // Revision 1.117 2004/12/13 08:15:09 rurban
2179 // false is wrong. null might be better but lets play safe.
2181 // Revision 1.116 2004/12/10 22:15:00 rurban
2182 // fix $page->get('_cached_html)
2183 // refactor upgrade db helper _convert_cached_html() to be able to call them from WikiAdminUtils also.
2184 // support 2nd genericSqlQuery param (bind huge arg)
2186 // Revision 1.115 2004/12/10 02:45:27 rurban
2187 // SQL optimization:
2188 // put _cached_html from pagedata into a new seperate blob, not huge serialized string.
2189 // it is only rarelely needed: for current page only, if-not-modified
2190 // but was extracted for every simple page iteration.
2192 // Revision 1.114 2004/12/09 22:24:44 rurban
2193 // optimize on _DEBUG_SQL only. but now again on every 50th request, not just save.
2195 // Revision 1.113 2004/12/06 19:49:55 rurban
2196 // enable action=remove which is undoable and seeable in RecentChanges: ADODB ony for now.
2197 // renamed delete_page to purge_page.
2198 // enable action=edit&version=-1 to force creation of a new version.
2199 // added BABYCART_PATH config
2200 // fixed magiqc in adodb.inc.php
2201 // and some more docs
2203 // Revision 1.112 2004/11/30 17:45:53 rurban
2204 // exists_links backend implementation
2206 // Revision 1.111 2004/11/28 20:39:43 rurban
2207 // deactivate pagecache overwrite: it is wrong
2209 // Revision 1.110 2004/11/26 18:39:01 rurban
2210 // new regex search parser and SQL backends (90% complete, glob and pcre backends missing)
2212 // Revision 1.109 2004/11/25 17:20:50 rurban
2213 // and again a couple of more native db args: backlinks
2215 // Revision 1.108 2004/11/23 13:35:31 rurban
2216 // add case_exact search
2218 // Revision 1.107 2004/11/21 11:59:16 rurban
2219 // remove final \n to be ob_cache independent
2221 // Revision 1.106 2004/11/20 17:35:56 rurban
2222 // improved WantedPages SQL backends
2223 // PageList::sortby new 3rd arg valid_fields (override db fields)
2224 // WantedPages sql pager inexact for performance reasons:
2225 // assume 3 wantedfrom per page, to be correct, no getTotal()
2226 // support exclude argument for get_all_pages, new _sql_set()
2228 // Revision 1.105 2004/11/20 09:16:27 rurban
2229 // Fix bad-style Cut&Paste programming errors, detected by Charles Corrigan.
2231 // Revision 1.104 2004/11/19 19:22:03 rurban
2232 // ModeratePage part1: change status
2234 // Revision 1.103 2004/11/16 17:29:04 rurban
2235 // fix remove notification error
2236 // fix creation + update id_cache update
2238 // Revision 1.102 2004/11/11 18:31:26 rurban
2239 // add simple backtrace on such general failures to get at least an idea where
2241 // Revision 1.101 2004/11/10 19:32:22 rurban
2242 // * optimize increaseHitCount, esp. for mysql.
2243 // * prepend dirs to the include_path (phpwiki_dir for faster searches)
2244 // * Pear_DB version logic (awful but needed)
2245 // * fix broken ADODB quote
2246 // * _extract_page_data simplification
2248 // Revision 1.100 2004/11/10 15:29:20 rurban
2249 // * requires newer Pear_DB (as the internal one): quote() uses now escapeSimple for strings
2250 // * ACCESS_LOG_SQL: fix cause request not yet initialized
2251 // * WikiDB: moved SQL specific methods upwards
2252 // * new Pear_DB quoting: same as ADODB and as newer Pear_DB.
2253 // fixes all around: WikiGroup, WikiUserNew SQL methods, SQL logging
2255 // Revision 1.99 2004/11/09 17:11:05 rurban
2256 // * revert to the wikidb ref passing. there's no memory abuse there.
2257 // * use new wikidb->_cache->_id_cache[] instead of wikidb->_iwpcache, to effectively
2258 // store page ids with getPageLinks (GleanDescription) of all existing pages, which
2259 // are also needed at the rendering for linkExistingWikiWord().
2260 // pass options to pageiterator.
2261 // use this cache also for _get_pageid()
2262 // This saves about 8 SELECT count per page (num all pagelinks).
2263 // * fix passing of all page fields to the pageiterator.
2264 // * fix overlarge session data which got broken with the latest ACCESS_LOG_SQL changes
2266 // Revision 1.98 2004/11/07 18:34:29 rurban
2267 // more logging fixes
2269 // Revision 1.97 2004/11/07 16:02:51 rurban
2270 // new sql access log (for spam prevention), and restructured access log class
2271 // dbh->quote (generic)
2272 // pear_db: mysql specific parts seperated (using replace)
2274 // Revision 1.96 2004/11/05 22:32:15 rurban
2275 // encode the subject to be 7-bit safe
2277 // Revision 1.95 2004/11/05 20:53:35 rurban
2278 // login cleanup: better debug msg on failing login,
2279 // checked password less immediate login (bogo or anon),
2280 // checked olduser pref session error,
2281 // better PersonalPage without password warning on minimal password length=0
2282 // (which is default now)
2284 // Revision 1.94 2004/11/01 10:43:56 rurban
2285 // seperate PassUser methods into seperate dir (memory usage)
2286 // fix WikiUser (old) overlarge data session
2287 // remove wikidb arg from various page class methods, use global ->_dbi instead
2290 // Revision 1.93 2004/10/14 17:17:57 rurban
2291 // remove dbi WikiDB_Page param: use global request object instead. (memory)
2292 // allow most_popular sortby arguments
2294 // Revision 1.92 2004/10/05 17:00:04 rurban
2295 // support paging for simple lists
2296 // fix RatingDb sql backend.
2297 // remove pages from AllPages (this is ListPages then)
2299 // Revision 1.91 2004/10/04 23:41:19 rurban
2300 // delete notify: fix, @unset syntax error
2302 // Revision 1.90 2004/09/28 12:50:22 rurban
2303 // https://sourceforge.net/forum/forum.php?thread_id=1150924&forum_id=18929
2305 // Revision 1.89 2004/09/26 10:54:42 rurban
2306 // silence deferred check
2308 // Revision 1.88 2004/09/25 18:16:40 rurban
2309 // unset more unneeded _cached_html. (Guess this should fix sf.net now)
2311 // Revision 1.87 2004/09/25 16:25:40 rurban
2312 // notify on rename and remove (to be improved)
2314 // Revision 1.86 2004/09/23 18:52:06 rurban
2315 // only fortune at create
2317 // Revision 1.85 2004/09/16 08:00:51 rurban
2318 // just some comments
2320 // Revision 1.84 2004/09/14 10:34:30 rurban
2321 // fix TransformedText call to use refs
2323 // Revision 1.83 2004/09/08 13:38:00 rurban
2324 // improve loadfile stability by using markup=2 as default for undefined markup-style.
2325 // use more refs for huge objects.
2326 // fix debug=static issue in WikiPluginCached
2328 // Revision 1.82 2004/09/06 12:08:49 rurban
2329 // memory_limit on unix workaround
2330 // VisualWiki: default autosize image
2332 // Revision 1.81 2004/09/06 08:28:00 rurban
2333 // rename genericQuery to genericSqlQuery
2335 // Revision 1.80 2004/07/09 13:05:34 rurban
2338 // Revision 1.79 2004/07/09 10:06:49 rurban
2339 // Use backend specific sortby and sortable_columns method, to be able to
2340 // select between native (Db backend) and custom (PageList) sorting.
2341 // Fixed PageList::AddPageList (missed the first)
2342 // Added the author/creator.. name to AllPagesBy...
2343 // display no pages if none matched.
2344 // Improved dba and file sortby().
2345 // Use &$request reference
2347 // Revision 1.78 2004/07/08 21:32:35 rurban
2348 // Prevent from more warnings, minor db and sort optimizations
2350 // Revision 1.77 2004/07/08 19:04:42 rurban
2351 // more unittest fixes (file backend, metadata RatingsDb)
2353 // Revision 1.76 2004/07/08 17:31:43 rurban
2354 // improve numPages for file (fixing AllPagesTest)
2356 // Revision 1.75 2004/07/05 13:56:22 rurban
2357 // sqlite autoincrement fix
2359 // Revision 1.74 2004/07/03 16:51:05 rurban
2360 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
2361 // added atomic mysql REPLACE for PearDB as in ADODB
2362 // fixed _lock_tables typo links => link
2363 // fixes unserialize ADODB bug in line 180
2365 // Revision 1.73 2004/06/29 08:52:22 rurban
2366 // Use ...version() $need_content argument in WikiDB also:
2367 // To reduce the memory footprint for larger sets of pagelists,
2368 // we don't cache the content (only true or false) and
2369 // we purge the pagedata (_cached_html) also.
2370 // _cached_html is only cached for the current pagename.
2371 // => Vastly improved page existance check, ACL check, ...
2373 // Now only PagedList info=content or size needs the whole content, esp. if sortable.
2375 // Revision 1.72 2004/06/25 14:15:08 rurban
2376 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
2378 // Revision 1.71 2004/06/21 16:22:30 rurban
2379 // add DEFAULT_DUMP_DIR and HTML_DUMP_DIR constants, for easier cmdline dumps,
2380 // fixed dumping buttons locally (images/buttons/),
2381 // support pages arg for dumphtml,
2382 // optional directory arg for dumpserial + dumphtml,
2383 // fix a AllPages warning,
2384 // show dump warnings/errors on DEBUG,
2385 // don't warn just ignore on wikilens pagelist columns, if not loaded.
2386 // RateIt pagelist column is called "rating", not "ratingwidget" (Dan?)
2388 // Revision 1.70 2004/06/18 14:39:31 rurban
2389 // actually check USECACHE
2391 // Revision 1.69 2004/06/13 15:33:20 rurban
2392 // new support for arguments owner, author, creator in most relevant
2393 // PageList plugins. in WikiAdmin* via preSelectS()
2395 // Revision 1.68 2004/06/08 21:03:20 rurban
2396 // updated RssParser for XmlParser quirks (store parser object params in globals)
2398 // Revision 1.67 2004/06/07 19:12:49 rurban
2399 // fixed rename version=0, bug #966284
2401 // Revision 1.66 2004/06/07 18:57:27 rurban
2402 // fix rename: Change pagename in all linked pages
2404 // Revision 1.65 2004/06/04 20:32:53 rurban
2405 // Several locale related improvements suggested by Pierrick Meignen
2406 // LDAP fix by John Cole
2407 // reanable admin check without ENABLE_PAGEPERM in the admin plugins
2409 // Revision 1.64 2004/06/04 16:50:00 rurban
2410 // add random quotes to empty pages
2412 // Revision 1.63 2004/06/04 11:58:38 rurban
2413 // added USE_TAGLINES
2415 // Revision 1.62 2004/06/03 22:24:41 rurban
2416 // reenable admin check on !ENABLE_PAGEPERM, honor s=Wildcard arg, fix warning after Remove
2418 // Revision 1.61 2004/06/02 17:13:48 rurban
2419 // fix getRevisionBefore assertion
2421 // Revision 1.60 2004/05/28 10:09:58 rurban
2422 // fix bug #962117, incorrect init of auth_dsn
2424 // Revision 1.59 2004/05/27 17:49:05 rurban
2425 // renamed DB_Session to DbSession (in CVS also)
2426 // added WikiDB->getParam and WikiDB->getAuthParam method to get rid of globals
2427 // remove leading slash in error message
2428 // added force_unlock parameter to File_Passwd (no return on stale locks)
2429 // fixed adodb session AffectedRows
2430 // added FileFinder helpers to unify local filenames and DATA_PATH names
2431 // editpage.php: new edit toolbar javascript on ENABLE_EDIT_TOOLBAR
2433 // Revision 1.58 2004/05/18 13:59:14 rurban
2434 // rename simpleQuery to genericQuery
2436 // Revision 1.57 2004/05/16 22:07:35 rurban
2437 // check more config-default and predefined constants
2438 // various PagePerm fixes:
2439 // fix default PagePerms, esp. edit and view for Bogo and Password users
2440 // implemented Creator and Owner
2441 // BOGOUSERS renamed to BOGOUSER
2442 // fixed syntax errors in signin.tmpl
2444 // Revision 1.56 2004/05/15 22:54:49 rurban
2445 // fixed important WikiDB bug with DEBUG > 0: wrong assertion
2446 // improved SetAcl (works) and PagePerms, some WikiGroup helpers.
2448 // Revision 1.55 2004/05/12 19:27:47 rurban
2449 // revert wrong inline optimization.
2451 // Revision 1.54 2004/05/12 10:49:55 rurban
2452 // require_once fix for those libs which are loaded before FileFinder and
2453 // its automatic include_path fix, and where require_once doesn't grok
2454 // dirname(__FILE__) != './lib'
2455 // upgrade fix with PearDB
2456 // navbar.tmpl: remove spaces for IE button alignment
2458 // Revision 1.53 2004/05/08 14:06:12 rurban
2459 // new support for inlined image attributes: [image.jpg size=50x30 align=right]
2460 // minor stability and portability fixes
2462 // Revision 1.52 2004/05/06 19:26:16 rurban
2463 // improve stability, trying to find the InlineParser endless loop on sf.net
2465 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
2467 // Revision 1.51 2004/05/06 17:30:37 rurban
2468 // CategoryGroup: oops, dos2unix eol
2469 // improved phpwiki_version:
2470 // pre -= .0001 (1.3.10pre: 1030.099)
2471 // -p1 += .001 (1.3.9-p1: 1030.091)
2472 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
2473 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
2474 // backend->backendType(), backend->database(),
2475 // backend->listOfFields(),
2476 // backend->listOfTables(),
2478 // Revision 1.50 2004/05/04 22:34:25 rurban
2481 // Revision 1.49 2004/05/03 11:16:40 rurban
2482 // fixed sendPageChangeNotification
2483 // subject rewording
2485 // Revision 1.48 2004/04/29 23:03:54 rurban
2486 // fixed sf.net bug #940996
2488 // Revision 1.47 2004/04/29 19:39:44 rurban
2489 // special support for formatted plugins (one-liners)
2490 // like <small><plugin BlaBla ></small>
2491 // iter->asArray() helper for PopularNearby
2492 // db_session for older php's (no &func() allowed)
2494 // Revision 1.46 2004/04/26 20:44:34 rurban
2495 // locking table specific for better databases
2497 // Revision 1.45 2004/04/20 00:06:03 rurban
2498 // themable paging support
2500 // Revision 1.44 2004/04/19 18:27:45 rurban
2501 // Prevent from some PHP5 warnings (ref args, no :: object init)
2502 // php5 runs now through, just one wrong XmlElement object init missing
2503 // Removed unneccesary UpgradeUser lines
2504 // Changed WikiLink to omit version if current (RecentChanges)
2506 // Revision 1.43 2004/04/18 01:34:20 rurban
2507 // protect most_popular from sortby=mtime
2509 // Revision 1.42 2004/04/18 01:11:51 rurban
2510 // more numeric pagename fixes.
2511 // fixed action=upload with merge conflict warnings.
2512 // charset changed from constant to global (dynamic utf-8 switching)
2518 // c-basic-offset: 4
2519 // c-hanging-comment-ender-p: nil
2520 // indent-tabs-mode: nil