2 rcs_id('$Id: WikiDB.php,v 1.75 2004-07-05 13:56:22 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 $dbparams Database configuration parameters.
58 * Some pertinent paramters are:
61 * <dd> The back-end type. Current supported types are:
64 * <dd> Generic SQL backend based on the PEAR/DB database abstraction
67 * <dd> Dba based backend.
71 * <dd> (Used by the SQL backend.)
72 * The DSN specifying which database to connect to.
75 * <dd> Prefix to be prepended to database table (and file names).
78 * <dd> (Used by the dba backend.)
79 * Which directory db files reside in.
82 * <dd> (Used only by the dba backend so far. FIXME!)
83 * Timeout in seconds for opening (and obtaining lock) on the
87 * <dd> (Used by the dba backend.)
89 * Which dba handler to use. Good choices are probably either
93 * @return WikiDB A WikiDB object.
95 function open ($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 return $page->exists();
214 * Delete page from the WikiDB.
216 * Deletes all revisions of the page from the WikiDB. Also resets
217 * all page meta-data to the default values.
221 * @param string $pagename Name of page to delete.
223 function deletePage($pagename) {
224 $this->_cache->delete_page($pagename);
226 //How to create a RecentChanges entry with explaining summary?
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);
238 * Retrieve all pages.
240 * Gets the set of all pages with non-default contents.
242 * FIXME: do we need this? I think so. The simple searches
247 * @param boolean $include_defaulted Normally pages whose most
248 * recent revision has empty content are considered to be
249 * non-existant. Unless $include_defaulted is set to true, those
250 * pages will not be returned.
252 * @return WikiDB_PageIterator A WikiDB_PageIterator which contains all pages
253 * in the WikiDB which have non-default contents.
255 function getAllPages($include_defaulted=false, $sortby=false, $limit=false) {
256 $result = $this->_backend->get_all_pages($include_defaulted,$sortby,$limit);
257 return new WikiDB_PageIterator($this, $result);
261 //function nPages() {
263 // Yes, for paging. Renamed.
264 function numPages($filter=false, $exclude='') {
265 if (method_exists($this->_backend,'numPages'))
266 $count = $this->_backend->numPages($filter,$exclude);
268 $iter = $this->getAllPages();
269 $count = $iter->count();
277 * Search for pages containing (or not containing) certain words
280 * Pages are returned in alphabetical order whenever it is
281 * practical to do so.
283 * FIXME: should titleSearch and fullSearch be combined? I think so.
286 * @param TextSearchQuery $search A TextSearchQuery object
287 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
288 * @see TextSearchQuery
290 function titleSearch($search) {
291 $result = $this->_backend->text_search($search);
292 return new WikiDB_PageIterator($this, $result);
298 * Search for pages containing (or not containing) certain words
299 * in their entire text (this includes the page content and the
302 * Pages are returned in alphabetical order whenever it is
303 * practical to do so.
307 * @param TextSearchQuery $search A TextSearchQuery object.
308 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
309 * @see TextSearchQuery
311 function fullSearch($search) {
312 $result = $this->_backend->text_search($search, 'full_text');
313 return new WikiDB_PageIterator($this, $result);
317 * Find the pages with the greatest hit counts.
319 * Pages are returned in reverse order by hit count.
323 * @param integer $limit The maximum number of pages to return.
324 * Set $limit to zero to return all pages. If $limit < 0, pages will
325 * be sorted in decreasing order of popularity.
327 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching
330 function mostPopular($limit = 20, $sortby = '') {
331 // we don't support sortby=mtime here
332 if (strstr($sortby,'mtime'))
334 $result = $this->_backend->most_popular($limit, $sortby);
335 return new WikiDB_PageIterator($this, $result);
339 * Find recent page revisions.
341 * Revisions are returned in reverse order by creation time.
345 * @param hash $params This hash is used to specify various optional
349 * <dd> (integer) At most this many revisions will be returned.
351 * <dd> (integer) Only revisions since this time (unix-timestamp) will be returned.
352 * <dt> include_minor_revisions
353 * <dd> (boolean) Also include minor revisions. (Default is not to.)
354 * <dt> exclude_major_revisions
355 * <dd> (boolean) Don't include non-minor revisions.
356 * (Exclude_major_revisions implies include_minor_revisions.)
357 * <dt> include_all_revisions
358 * <dd> (boolean) Return all matching revisions for each page.
359 * Normally only the most recent matching revision is returned
363 * @return WikiDB_PageRevisionIterator A WikiDB_PageRevisionIterator containing the
364 * matching revisions.
366 function mostRecent($params = false) {
367 $result = $this->_backend->most_recent($params);
368 return new WikiDB_PageRevisionIterator($this, $result);
372 * Call the appropriate backend method.
375 * @param string $from Page to rename
376 * @param string $to New name
377 * @param boolean $updateWikiLinks If the text in all pages should be replaced.
378 * @return boolean true or false
380 function renamePage($from, $to, $updateWikiLinks = false) {
381 assert(is_string($from) && $from != '');
382 assert(is_string($to) && $to != '');
384 if (method_exists($this->_backend,'rename_page')) {
385 $oldpage = $this->getPage($from);
386 $newpage = $this->getPage($to);
387 //update all WikiLinks in existing pages
388 //non-atomic! i.e. if rename fails the links are not undone
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, $meta);
410 } elseif (!$oldpage->getCurrentRevision(false) and !$newpage->exists()) {
411 // if a version 0 exists try it also.
412 $result = $this->_backend->rename_page($from, $to);
415 trigger_error(_("WikiDB::renamePage() not yet implemented for this backend"),E_USER_WARNING);
420 /** Get timestamp when database was last modified.
422 * @return string A string consisting of two integers,
423 * separated by a space. The first is the time in
424 * unix timestamp format, the second is a modification
425 * count for the database.
427 * The idea is that you can cast the return value to an
428 * int to get a timestamp, or you can use the string value
429 * as a good hash for the entire database.
431 function getTimestamp() {
432 $ts = $this->get('_timestamp');
433 return sprintf("%d %d", $ts[0], $ts[1]);
437 * Update the database timestamp.
441 $ts = $this->get('_timestamp');
442 $this->set('_timestamp', array(time(), $ts[1] + 1));
447 * Access WikiDB global meta-data.
449 * NOTE: this is currently implemented in a hackish and
450 * not very efficient manner.
454 * @param string $key Which meta data to get.
455 * Some reserved meta-data keys are:
457 * <dt>'_timestamp' <dd> Data used by getTimestamp().
460 * @return scalar The requested value, or false if the requested data
464 if (!$key || $key[0] == '%')
467 * Hack Alert: We can use any page (existing or not) to store
468 * this data (as long as we always use the same one.)
470 $gd = $this->getPage('global_data');
471 $data = $gd->get('__global');
473 if ($data && isset($data[$key]))
480 * Set global meta-data.
482 * NOTE: this is currently implemented in a hackish and
483 * not very efficient manner.
488 * @param string $key Meta-data key to set.
489 * @param string $newval New value.
491 function set($key, $newval) {
492 if (!$key || $key[0] == '%')
495 $gd = $this->getPage('global_data');
497 $data = $gd->get('__global');
504 $data[$key] = $newval;
506 $gd->set('__global', $data);
509 // simple select or create/update queries
510 function genericQuery($sql) {
512 if ($DBParams['dbtype'] == 'SQL') {
513 $result = $this->_backend->_dbh->query($sql);
514 if (DB::isError($result)) {
515 $msg = $result->getMessage();
516 trigger_error("SQL Error: ".DB::errorMessage($result), E_USER_WARNING);
521 } elseif ($DBParams['dbtype'] == 'ADODB') {
522 if (!($result = $this->_backend->_dbh->Execute($sql))) {
523 trigger_error("SQL Error: ".$this->_backend->_dbh->ErrorMsg(), E_USER_WARNING);
532 function getParam($param) {
534 if (isset($DBParams[$param])) return $DBParams[$param];
535 elseif ($param == 'prefix') return '';
539 function getAuthParam($param) {
540 global $DBAuthParams;
541 if (isset($DBAuthParams[$param])) return $DBAuthParams[$param];
542 elseif ($param == 'USER_AUTH_ORDER') return $GLOBALS['USER_AUTH_ORDER'];
543 elseif ($param == 'USER_AUTH_POLICY') return $GLOBALS['USER_AUTH_POLICY'];
550 * An abstract base class which representing a wiki-page within a
553 * A WikiDB_Page contains a number (at least one) of
554 * WikiDB_PageRevisions.
558 function WikiDB_Page(&$wikidb, $pagename) {
559 $this->_wikidb = &$wikidb;
560 $this->_pagename = $pagename;
562 if (!(is_string($pagename) and $pagename != '')) {
563 if (function_exists("xdebug_get_function_stack")) {
564 echo "xdebug_get_function_stack(): "; var_dump(xdebug_get_function_stack());
567 trigger_error("empty pagename",E_USER_WARNING);
570 } else assert(is_string($pagename) and $pagename != '');
574 * Get the name of the wiki page.
578 * @return string The page name.
581 return $this->_pagename;
584 // To reduce the memory footprint for larger sets of pagelists,
585 // we don't cache the content (only true or false) and
586 // we purge the pagedata (_cached_html) also
588 $current = $this->getCurrentRevision(false);
589 unset($current->_wikidb->_cache->_pagedata_cache[$this->_pagename]);
590 $exists = ! $current->hasDefaultContents();
591 unset($current->_data->{'%pagedata'});
596 * Delete an old revision of a WikiDB_Page.
598 * Deletes the specified revision of the page.
599 * It is a fatal error to attempt to delete the current revision.
603 * @param integer $version Which revision to delete. (You can also
604 * use a WikiDB_PageRevision object here.)
606 function deleteRevision($version) {
607 $backend = &$this->_wikidb->_backend;
608 $cache = &$this->_wikidb->_cache;
609 $pagename = &$this->_pagename;
611 $version = $this->_coerce_to_version($version);
615 $backend->lock(array('page','version'));
616 $latestversion = $cache->get_latest_version($pagename);
617 if ($latestversion && $version == $latestversion) {
618 $backend->unlock(array('page','version'));
619 trigger_error(sprintf("Attempt to delete most recent revision of '%s'",
620 $pagename), E_USER_ERROR);
624 $cache->delete_versiondata($pagename, $version);
625 $backend->unlock(array('page','version'));
629 * Delete a revision, or possibly merge it with a previous
633 * Suppose an author make a (major) edit to a page. Shortly
634 * after that the same author makes a minor edit (e.g. to fix
635 * spelling mistakes he just made.)
637 * Now some time later, where cleaning out old saved revisions,
638 * and would like to delete his minor revision (since there's
639 * really no point in keeping minor revisions around for a long
642 * Note that the text after the minor revision probably represents
643 * what the author intended to write better than the text after
644 * the preceding major edit.
646 * So what we really want to do is merge the minor edit with the
649 * We will only do this when:
651 * <li>The revision being deleted is a minor one, and
652 * <li>It has the same author as the immediately preceding revision.
655 function mergeRevision($version) {
656 $backend = &$this->_wikidb->_backend;
657 $cache = &$this->_wikidb->_cache;
658 $pagename = &$this->_pagename;
660 $version = $this->_coerce_to_version($version);
664 $backend->lock(array('version'));
665 $latestversion = $backend->get_latest_version($pagename);
666 if ($latestversion && $version == $latestversion) {
667 $backend->unlock(array('version'));
668 trigger_error(sprintf("Attempt to merge most recent revision of '%s'",
669 $pagename), E_USER_ERROR);
673 $versiondata = $cache->get_versiondata($pagename, $version, true);
675 // Not there? ... we're done!
676 $backend->unlock(array('version'));
680 if ($versiondata['is_minor_edit']) {
681 $previous = $backend->get_previous_version($pagename, $version);
683 $prevdata = $cache->get_versiondata($pagename, $previous);
684 if ($prevdata['author_id'] == $versiondata['author_id']) {
685 // This is a minor revision, previous version is
686 // by the same author. We will merge the
688 $cache->update_versiondata($pagename, $previous,
689 array('%content' => $versiondata['%content'],
690 '_supplanted' => $versiondata['_supplanted']));
695 $cache->delete_versiondata($pagename, $version);
696 $backend->unlock(array('version'));
701 * Create a new revision of a {@link WikiDB_Page}.
705 * @param int $version Version number for new revision.
706 * To ensure proper serialization of edits, $version must be
707 * exactly one higher than the current latest version.
708 * (You can defeat this check by setting $version to
709 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
711 * @param string $content Contents of new revision.
713 * @param hash $metadata Metadata for new revision.
714 * All values in the hash should be scalars (strings or integers).
716 * @param array $links List of pagenames which this page links to.
718 * @return WikiDB_PageRevision Returns the new WikiDB_PageRevision object. If
719 * $version was incorrect, returns false
721 function createRevision($version, &$content, $metadata, $links) {
722 $backend = &$this->_wikidb->_backend;
723 $cache = &$this->_wikidb->_cache;
724 $pagename = &$this->_pagename;
726 $backend->lock(array('version','page','recent','link','nonempty'));
728 $latestversion = $backend->get_latest_version($pagename);
729 $newversion = $latestversion + 1;
730 assert($newversion >= 1);
732 if ($version != WIKIDB_FORCE_CREATE && $version != $newversion) {
733 $backend->unlock(array('version','page','recent','link','nonempty'));
739 foreach ($data as $key => $val) {
740 if (empty($val) || $key[0] == '_' || $key[0] == '%')
744 assert(!empty($data['author']));
745 if (empty($data['author_id']))
746 @$data['author_id'] = $data['author'];
748 if (empty($data['mtime']))
749 $data['mtime'] = time();
751 if ($latestversion) {
752 // Ensure mtimes are monotonic.
753 $pdata = $cache->get_versiondata($pagename, $latestversion);
754 if ($data['mtime'] < $pdata['mtime']) {
755 trigger_error(sprintf(_("%s: Date of new revision is %s"),
756 $pagename,"'non-monotonic'"),
758 $data['orig_mtime'] = $data['mtime'];
759 $data['mtime'] = $pdata['mtime'];
762 // FIXME: use (possibly user specified) 'mtime' time or
764 $cache->update_versiondata($pagename, $latestversion,
765 array('_supplanted' => $data['mtime']));
768 $data['%content'] = &$content;
770 $cache->set_versiondata($pagename, $newversion, $data);
772 //$cache->update_pagedata($pagename, array(':latestversion' => $newversion,
773 //':deleted' => empty($content)));
775 $backend->set_links($pagename, $links);
777 $backend->unlock(array('version','page','recent','link','nonempty'));
779 return new WikiDB_PageRevision($this->_wikidb, $pagename, $newversion,
783 /** A higher-level interface to createRevision.
785 * This takes care of computing the links, and storing
786 * a cached version of the transformed wiki-text.
788 * @param string $wikitext The page content.
790 * @param int $version Version number for new revision.
791 * To ensure proper serialization of edits, $version must be
792 * exactly one higher than the current latest version.
793 * (You can defeat this check by setting $version to
794 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
796 * @param hash $meta Meta-data for new revision.
798 function save($wikitext, $version, $meta) {
799 $formatted = new TransformedText($this, $wikitext, $meta);
800 $type = $formatted->getType();
801 $meta['pagetype'] = $type->getName();
802 $links = $formatted->getWikiPageLinks();
804 $backend = &$this->_wikidb->_backend;
805 $newrevision = $this->createRevision($version, $wikitext, $meta, $links);
807 if (!defined('WIKIDB_NOCACHE_MARKUP') or !WIKIDB_NOCACHE_MARKUP)
808 $this->set('_cached_html', $formatted->pack());
810 // FIXME: probably should have some global state information
811 // in the backend to control when to optimize.
813 // We're doing this here rather than in createRevision because
814 // postgres can't optimize while locked.
815 if (DEBUG or (time() % 50 == 0)) {
816 if ($backend->optimize())
817 trigger_error(_("Optimizing database"), E_USER_NOTICE);
820 /* Generate notification emails? */
821 if (isa($newrevision, 'wikidb_pagerevision')) {
822 // Save didn't fail because of concurrent updates.
823 $notify = $this->_wikidb->get('notify');
824 if (!empty($notify) and is_array($notify)) {
825 list($emails, $userids) = $this->getPageChangeEmails($notify);
827 $this->sendPageChangeNotification($wikitext, $version, $meta, $emails, $userids);
831 $newrevision->_transformedContent = $formatted;
835 function getPageChangeEmails($notify) {
836 $emails = array(); $userids = array();
837 foreach ($notify as $page => $users) {
838 if (glob_match($page, $this->_pagename)) {
839 foreach ($users as $userid => $user) {
840 if (!empty($user['verified']) and !empty($user['email'])) {
841 $emails[] = $user['email'];
842 $userids[] = $userid;
843 } elseif (!empty($user['email'])) {
845 // do a dynamic emailVerified check update
846 $u = $request->getUser();
847 if ($u->UserName() == $userid) {
848 if ($request->_prefs->get('emailVerified')) {
849 $emails[] = $user['email'];
850 $userids[] = $userid;
851 $notify[$page][$userid]['verified'] = 1;
852 $request->_dbi->set('notify', $notify);
855 $u = WikiUser($userid);
856 $u->getPreferences();
857 if ($u->_prefs->get('emailVerified')) {
858 $emails[] = $user['email'];
859 $userids[] = $userid;
860 $notify[$page][$userid]['verified'] = 1;
861 $request->_dbi->set('notify', $notify);
864 // ignore verification
867 if (!in_array($user['email'],$emails))
868 $emails[] = $user['email'];
875 $emails = array_unique($emails);
876 $userids = array_unique($userids);
877 return array($emails,$userids);
880 function sendPageChangeNotification(&$wikitext, $version, $meta, $emails, $userids) {
881 $backend = &$this->_wikidb->_backend;
882 $subject = _("Page change").' '.$this->_pagename;
883 $previous = $backend->get_previous_version($this->_pagename, $version);
884 if (!isset($meta['mtime'])) $meta['mtime'] = time();
886 $difflink = WikiURL($this->_pagename,array('action'=>'diff'),true);
887 $cache = &$this->_wikidb->_cache;
888 $this_content = explode("\n", $wikitext);
889 $prevdata = $cache->get_versiondata($this->_pagename, $previous, true);
890 if (empty($prevdata['%content']))
891 $prevdata = $backend->get_versiondata($this->_pagename, $previous, true);
892 $other_content = explode("\n", $prevdata['%content']);
894 include_once("lib/diff.php");
895 $diff2 = new Diff($other_content, $this_content);
896 $context_lines = max(4, count($other_content) + 1,
897 count($this_content) + 1);
898 $fmt = new UnifiedDiffFormatter($context_lines);
899 $content = $this->_pagename . " " . $previous . " " . Iso8601DateTime($prevdata['mtime']) . "\n";
900 $content .= $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
901 $content .= $fmt->format($diff2);
904 $difflink = WikiURL($this->_pagename,array(),true);
905 $content = $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
906 $content .= _("New Page");
908 $editedby = sprintf(_("Edited by: %s"), $meta['author']);
909 $emails = join(',',$emails);
910 if (mail($emails,"[".WIKI_NAME."] ".$subject,
915 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
916 $this->_pagename, join(',',$userids)), E_USER_NOTICE);
918 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
919 $this->_pagename, join(',',$userids)), E_USER_WARNING);
923 * Get the most recent revision of a page.
927 * @return WikiDB_PageRevision The current WikiDB_PageRevision object.
929 function getCurrentRevision($need_content = true) {
930 $backend = &$this->_wikidb->_backend;
931 $cache = &$this->_wikidb->_cache;
932 $pagename = &$this->_pagename;
934 // Prevent deadlock in case of memory exhausted errors
935 // Pure selection doesn't really need locking here.
937 // I know it would be better, but with lots of pages this deadlock is more
938 // severe than occasionally get not the latest revision.
940 $version = $cache->get_latest_version($pagename);
941 // getRevision gets the content also!
942 $revision = $this->getRevision($version, $need_content);
943 //$backend->unlock();
949 * Get a specific revision of a WikiDB_Page.
953 * @param integer $version Which revision to get.
955 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or
956 * false if the requested revision does not exist in the {@link WikiDB}.
957 * Note that version zero of any page always exists.
959 function getRevision($version, $need_content=true) {
960 $cache = &$this->_wikidb->_cache;
961 $pagename = &$this->_pagename;
963 if (! $version ) // 0 or false
964 return new WikiDB_PageRevision($this->_wikidb, $pagename, 0);
966 assert($version > 0);
967 $vdata = $cache->get_versiondata($pagename, $version, $need_content);
970 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
975 * Get previous page revision.
977 * This method find the most recent revision before a specified
982 * @param integer $version Find most recent revision before this version.
983 * You can also use a WikiDB_PageRevision object to specify the $version.
985 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or false if the
986 * requested revision does not exist in the {@link WikiDB}. Note that
987 * unless $version is greater than zero, a revision (perhaps version zero,
988 * the default revision) will always be found.
990 function getRevisionBefore($version, $need_content=true) {
991 $backend = &$this->_wikidb->_backend;
992 $pagename = &$this->_pagename;
994 $version = $this->_coerce_to_version($version);
999 $previous = $backend->get_previous_version($pagename, $version);
1000 $revision = $this->getRevision($previous, $need_content);
1001 //$backend->unlock();
1007 * Get all revisions of the WikiDB_Page.
1009 * This does not include the version zero (default) revision in the
1010 * returned revision set.
1012 * @return WikiDB_PageRevisionIterator A
1013 * WikiDB_PageRevisionIterator containing all revisions of this
1014 * WikiDB_Page in reverse order by version number.
1016 function getAllRevisions() {
1017 $backend = &$this->_wikidb->_backend;
1018 $revs = $backend->get_all_revisions($this->_pagename);
1019 return new WikiDB_PageRevisionIterator($this->_wikidb, $revs);
1023 * Find pages which link to or are linked from a page.
1027 * @param boolean $reversed Which links to find: true for backlinks (default).
1029 * @return WikiDB_PageIterator A WikiDB_PageIterator containing
1030 * all matching pages.
1032 function getLinks($reversed = true) {
1033 $backend = &$this->_wikidb->_backend;
1034 $result = $backend->get_links($this->_pagename, $reversed);
1035 return new WikiDB_PageIterator($this->_wikidb, $result);
1039 * All Links from other pages to this page.
1041 function getBackLinks() {
1042 return $this->getLinks(true);
1045 * Forward Links: All Links from this page to other pages.
1047 function getPageLinks() {
1048 return $this->getLinks(false);
1052 * Access WikiDB_Page meta-data.
1056 * @param string $key Which meta data to get.
1057 * Some reserved meta-data keys are:
1059 * <dt>'locked'<dd> Is page locked?
1060 * <dt>'hits' <dd> Page hit counter.
1061 * <dt>'pref' <dd> Users preferences, stored in homepages.
1062 * <dt>'owner' <dd> Default: first author_id. We might add a group with a dot here:
1063 * E.g. "owner.users"
1064 * <dt>'perm' <dd> Permission flag to authorize read/write/execution of
1065 * page-headers and content.
1066 * <dt>'score' <dd> Page score (not yet implement, do we need?)
1069 * @return scalar The requested value, or false if the requested data
1072 function get($key) {
1073 $cache = &$this->_wikidb->_cache;
1074 if (!$key || $key[0] == '%')
1076 $data = $cache->get_pagedata($this->_pagename);
1077 return isset($data[$key]) ? $data[$key] : false;
1081 * Get all the page meta-data as a hash.
1083 * @return hash The page meta-data.
1085 function getMetaData() {
1086 $cache = &$this->_wikidb->_cache;
1087 $data = $cache->get_pagedata($this->_pagename);
1089 foreach ($data as $key => $val) {
1090 if (/*!empty($val) &&*/ $key[0] != '%')
1097 * Set page meta-data.
1102 * @param string $key Meta-data key to set.
1103 * @param string $newval New value.
1105 function set($key, $newval) {
1106 $cache = &$this->_wikidb->_cache;
1107 $pagename = &$this->_pagename;
1109 assert($key && $key[0] != '%');
1111 $data = $cache->get_pagedata($pagename);
1113 if (!empty($newval)) {
1114 if (!empty($data[$key]) && $data[$key] == $newval)
1115 return; // values identical, skip update.
1118 if (empty($data[$key]))
1119 return; // values identical, skip update.
1122 $cache->update_pagedata($pagename, array($key => $newval));
1126 * Increase page hit count.
1128 * FIXME: IS this needed? Probably not.
1130 * This is a convenience function.
1131 * <pre> $page->increaseHitCount(); </pre>
1132 * is functionally identical to
1133 * <pre> $page->set('hits',$page->get('hits')+1); </pre>
1135 * Note that this method may be implemented in more efficient ways
1136 * in certain backends.
1140 function increaseHitCount() {
1141 @$newhits = $this->get('hits') + 1;
1142 $this->set('hits', $newhits);
1146 * Return a string representation of the WikiDB_Page
1148 * This is really only for debugging.
1152 * @return string Printable representation of the WikiDB_Page.
1154 function asString () {
1156 printf("[%s:%s\n", get_class($this), $this->getName());
1157 print_r($this->getMetaData());
1159 $strval = ob_get_contents();
1167 * @param integer_or_object $version_or_pagerevision
1168 * Takes either the version number (and int) or a WikiDB_PageRevision
1170 * @return integer The version number.
1172 function _coerce_to_version($version_or_pagerevision) {
1173 if (method_exists($version_or_pagerevision, "getContent"))
1174 $version = $version_or_pagerevision->getVersion();
1176 $version = (int) $version_or_pagerevision;
1178 assert($version >= 0);
1182 function isUserPage ($include_empty = true) {
1183 if ($include_empty) {
1184 $current = $this->getCurrentRevision(false);
1185 if ($current->hasDefaultContents()) {
1189 return $this->get('pref') ? true : false;
1192 // May be empty. Either the stored owner (/Chown), or the first authorized author
1193 function getOwner() {
1194 if ($owner = $this->get('owner'))
1195 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1196 // check all revisions forwards for the first author_id
1197 $backend = &$this->_wikidb->_backend;
1198 $pagename = &$this->_pagename;
1199 $latestversion = $backend->get_latest_version($pagename);
1200 for ($v=1; $v <= $latestversion; $v++) {
1201 $rev = $this->getRevision($v);
1202 if ($rev and $owner = $rev->get('author_id')) {
1203 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1209 // The authenticated author of the first revision or empty if not authenticated then.
1210 function getCreator() {
1211 if ($current = $this->getRevision(1)) return $current->get('author_id');
1215 // The authenticated author of the current revision.
1216 function getAuthor() {
1217 if ($current = $this->getCurrentRevision(false)) return $current->get('author_id');
1224 * This class represents a specific revision of a WikiDB_Page within
1227 * A WikiDB_PageRevision has read-only semantics. You may only create
1228 * new revisions (and delete old ones) --- you cannot modify existing
1231 class WikiDB_PageRevision
1233 var $_transformedContent = false; // set by WikiDB_Page::save()
1235 function WikiDB_PageRevision(&$wikidb, $pagename, $version,
1236 $versiondata = false)
1238 $this->_wikidb = &$wikidb;
1239 $this->_pagename = $pagename;
1240 $this->_version = $version;
1241 $this->_data = $versiondata ? $versiondata : array();
1245 * Get the WikiDB_Page which this revision belongs to.
1249 * @return WikiDB_Page The WikiDB_Page which this revision belongs to.
1251 function getPage() {
1252 return new WikiDB_Page($this->_wikidb, $this->_pagename);
1256 * Get the version number of this revision.
1260 * @return integer The version number of this revision.
1262 function getVersion() {
1263 return $this->_version;
1267 * Determine whether this revision has defaulted content.
1269 * The default revision (version 0) of each page, as well as any
1270 * pages which are created with empty content have their content
1271 * defaulted to something like:
1273 * Describe [ThisPage] here.
1278 * @return boolean Returns true if the page has default content.
1280 function hasDefaultContents() {
1281 $data = &$this->_data;
1282 return empty($data['%content']);
1286 * Get the content as an array of lines.
1290 * @return array An array of lines.
1291 * The lines should contain no trailing white space.
1293 function getContent() {
1294 return explode("\n", $this->getPackedContent());
1298 * Get the pagename of the revision.
1302 * @return string pagename.
1304 function getPageName() {
1305 return $this->_pagename;
1309 * Determine whether revision is the latest.
1313 * @return boolean True iff the revision is the latest (most recent) one.
1315 function isCurrent() {
1316 if (!isset($this->_iscurrent)) {
1317 $page = $this->getPage();
1318 $current = $page->getCurrentRevision(false);
1319 $this->_iscurrent = $this->getVersion() == $current->getVersion();
1321 return $this->_iscurrent;
1325 * Get the transformed content of a page.
1327 * @param string $pagetype Override the page-type of the revision.
1329 * @return object An XmlContent-like object containing the page transformed
1332 function getTransformedContent($pagetype_override=false) {
1333 $backend = &$this->_wikidb->_backend;
1335 if ($pagetype_override) {
1336 // Figure out the normal page-type for this page.
1337 $type = PageType::GetPageType($this->get('pagetype'));
1338 if ($type->getName() == $pagetype_override)
1339 $pagetype_override = false; // Not really an override...
1342 if ($pagetype_override) {
1343 // Overriden page type, don't cache (or check cache).
1344 return new TransformedText($this->getPage(),
1345 $this->getPackedContent(),
1346 $this->getMetaData(),
1347 $pagetype_override);
1350 $possibly_cache_results = true;
1352 if (defined('WIKIDB_NOCACHE_MARKUP') and WIKIDB_NOCACHE_MARKUP) {
1353 if (WIKIDB_NOCACHE_MARKUP == 'purge') {
1354 // flush cache for this page.
1355 $page = $this->getPage();
1356 $page->set('_cached_html', false);
1358 $possibly_cache_results = false;
1360 elseif (!$this->_transformedContent) {
1362 if ($this->isCurrent()) {
1363 $page = $this->getPage();
1364 $this->_transformedContent = TransformedText::unpack($page->get('_cached_html'));
1367 $possibly_cache_results = false;
1369 //$backend->unlock();
1372 if (!$this->_transformedContent) {
1373 $this->_transformedContent
1374 = new TransformedText($this->getPage(),
1375 $this->getPackedContent(),
1376 $this->getMetaData());
1378 if ($possibly_cache_results) {
1379 // If we're still the current version, cache the transfomed page.
1381 if ($this->isCurrent()) {
1382 $page->set('_cached_html', $this->_transformedContent->pack());
1384 //$backend->unlock();
1388 return $this->_transformedContent;
1392 * Get the content as a string.
1396 * @return string The page content.
1397 * Lines are separated by new-lines.
1399 function getPackedContent() {
1400 $data = &$this->_data;
1403 if (empty($data['%content'])) {
1404 include_once('lib/InlineParser.php');
1405 // A feature similar to taglines at http://www.wlug.org.nz/
1406 // Lib from http://www.aasted.org/quote/
1407 if (defined('FORTUNE_DIR') and is_dir(FORTUNE_DIR)) {
1408 include_once("lib/fortune.php");
1409 $fortune = new Fortune();
1410 $quote = str_replace("\n<br>","\n", $fortune->quoteFromDir(FORTUNE_DIR));
1411 return sprintf("<verbatim>\n%s</verbatim>\n\n"._("Describe %s here."),
1412 $quote, "[" . WikiEscape($this->_pagename) . "]");
1414 // Replace empty content with default value.
1415 return sprintf(_("Describe %s here."),
1416 "[" . WikiEscape($this->_pagename) . "]");
1419 // There is (non-default) content.
1420 assert($this->_version > 0);
1422 if (!is_string($data['%content'])) {
1423 // Content was not provided to us at init time.
1424 // (This is allowed because for some backends, fetching
1425 // the content may be expensive, and often is not wanted
1428 // In any case, now we need to get it.
1429 $data['%content'] = $this->_get_content();
1430 assert(is_string($data['%content']));
1433 return $data['%content'];
1436 function _get_content() {
1437 $cache = &$this->_wikidb->_cache;
1438 $pagename = $this->_pagename;
1439 $version = $this->_version;
1441 assert($version > 0);
1443 $newdata = $cache->get_versiondata($pagename, $version, true);
1445 assert(is_string($newdata['%content']));
1446 return $newdata['%content'];
1449 // else revision has been deleted... What to do?
1450 return __sprintf("Oops! Revision %s of %s seems to have been deleted!",
1451 $version, $pagename);
1456 * Get meta-data for this revision.
1461 * @param string $key Which meta-data to access.
1463 * Some reserved revision meta-data keys are:
1465 * <dt> 'mtime' <dd> Time this revision was created (seconds since midnight Jan 1, 1970.)
1466 * The 'mtime' meta-value is normally set automatically by the database
1467 * backend, but it may be specified explicitly when creating a new revision.
1469 * <dd> To ensure consistency of RecentChanges, the mtimes of the versions
1470 * of a page must be monotonically increasing. If an attempt is
1471 * made to create a new revision with an mtime less than that of
1472 * the preceeding revision, the new revisions timestamp is force
1473 * to be equal to that of the preceeding revision. In that case,
1474 * the originally requested mtime is preserved in 'orig_mtime'.
1475 * <dt> '_supplanted' <dd> Time this revision ceased to be the most recent.
1476 * This meta-value is <em>always</em> automatically maintained by the database
1477 * backend. (It is set from the 'mtime' meta-value of the superceding
1478 * revision.) '_supplanted' has a value of 'false' for the current revision.
1480 * FIXME: this could be refactored:
1482 * <dd> Author of the page (as he should be reported in, e.g. RecentChanges.)
1484 * <dd> Authenticated author of a page. This is used to identify
1485 * the distinctness of authors when cleaning old revisions from
1487 * <dt> 'is_minor_edit' <dd> Set if change was marked as a minor revision by the author.
1488 * <dt> 'summary' <dd> Short change summary entered by page author.
1491 * Meta-data keys must be valid C identifers (they have to start with a letter
1492 * or underscore, and can contain only alphanumerics and underscores.)
1494 * @return string The requested value, or false if the requested value
1497 function get($key) {
1498 if (!$key || $key[0] == '%')
1500 $data = &$this->_data;
1501 return isset($data[$key]) ? $data[$key] : false;
1505 * Get all the revision page meta-data as a hash.
1507 * @return hash The revision meta-data.
1509 function getMetaData() {
1511 foreach ($this->_data as $key => $val) {
1512 if (!empty($val) && $key[0] != '%')
1520 * Return a string representation of the revision.
1522 * This is really only for debugging.
1526 * @return string Printable representation of the WikiDB_Page.
1528 function asString () {
1530 printf("[%s:%d\n", get_class($this), $this->get('version'));
1531 print_r($this->_data);
1532 echo $this->getPackedContent() . "\n]\n";
1533 $strval = ob_get_contents();
1541 * Class representing a sequence of WikiDB_Pages.
1542 * TODO: Enhance to php5 iterators
1544 class WikiDB_PageIterator
1546 function WikiDB_PageIterator(&$wikidb, &$pages) {
1547 $this->_pages = $pages;
1548 $this->_wikidb = &$wikidb;
1552 return $this->_pages->count();
1556 * Get next WikiDB_Page in sequence.
1560 * @return WikiDB_Page The next WikiDB_Page in the sequence.
1563 if ( ! ($next = $this->_pages->next()) )
1566 $pagename = &$next['pagename'];
1568 trigger_error('empty pagename in WikiDB_PageIterator::next()', E_USER_WARNING);
1572 // there's always hits, but we cache only if more
1573 if (isset($next['pagedata']) and count($next['pagedata']) > 1) {
1574 $this->_wikidb->_cache->cache_data($next);
1577 return new WikiDB_Page($this->_wikidb, $pagename);
1581 * Release resources held by this iterator.
1583 * The iterator may not be used after free() is called.
1585 * There is no need to call free(), if next() has returned false.
1586 * (I.e. if you iterate through all the pages in the sequence,
1587 * you do not need to call free() --- you only need to call it
1588 * if you stop before the end of the iterator is reached.)
1593 $this->_pages->free();
1596 function asArray() {
1598 while ($page = $this->next())
1604 // Not yet used and problematic. Order should be set in the query, not afterwards.
1605 // See PageList::sortby
1606 function setSortby ($arg = false) {
1608 $arg = @$_GET['sortby'];
1610 $sortby = substr($arg,1);
1611 $order = substr($arg,0,1)=='+' ? 'ASC' : 'DESC';
1614 if (is_array($arg)) { // array('mtime' => 'desc')
1621 // available column types to sort by:
1622 // todo: we must provide access methods for the generic dumb/iterator
1623 $this->_types = explode(',','pagename,mtime,hits,version,author,locked,minor,markup');
1624 if (in_array($sortby,$this->_types))
1625 $this->_options['sortby'] = $sortby;
1627 trigger_error(sprintf("Argument %s '%s' ignored",'sortby',$sortby), E_USER_WARNING);
1628 if (in_array(strtoupper($order),'ASC','DESC'))
1629 $this->_options['order'] = strtoupper($order);
1631 trigger_error(sprintf("Argument %s '%s' ignored",'order',$order), E_USER_WARNING);
1637 * A class which represents a sequence of WikiDB_PageRevisions.
1638 * TODO: Enhance to php5 iterators
1640 class WikiDB_PageRevisionIterator
1642 function WikiDB_PageRevisionIterator(&$wikidb, &$revisions) {
1643 $this->_revisions = $revisions;
1644 $this->_wikidb = &$wikidb;
1648 return $this->_revisions->count();
1652 * Get next WikiDB_PageRevision in sequence.
1656 * @return WikiDB_PageRevision
1657 * The next WikiDB_PageRevision in the sequence.
1660 if ( ! ($next = $this->_revisions->next()) )
1663 $this->_wikidb->_cache->cache_data($next);
1665 $pagename = $next['pagename'];
1666 $version = $next['version'];
1667 $versiondata = $next['versiondata'];
1669 if (!(is_string($pagename) and $pagename != '')) {
1670 trigger_error("empty pagename",E_USER_WARNING);
1673 } else assert(is_string($pagename) and $pagename != '');
1675 if (!is_array($versiondata)) {
1676 trigger_error("empty versiondata",E_USER_WARNING);
1679 } else assert(is_array($versiondata));
1681 if (!($version > 0)) {
1682 trigger_error("invalid version",E_USER_WARNING);
1685 } else assert($version > 0);
1687 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
1692 * Release resources held by this iterator.
1694 * The iterator may not be used after free() is called.
1696 * There is no need to call free(), if next() has returned false.
1697 * (I.e. if you iterate through all the revisions in the sequence,
1698 * you do not need to call free() --- you only need to call it
1699 * if you stop before the end of the iterator is reached.)
1704 $this->_revisions->free();
1707 function asArray() {
1709 while ($rev = $this->next())
1718 class WikiDB_Array_PageIterator
1720 function WikiDB_Array_PageIterator(&$pagenames) {
1722 $this->_dbi = $request->getDbh();
1723 $this->_pages = $pagenames;
1724 reset($this->_pages);
1727 $c =& current($this->_pages);
1728 next($this->_pages);
1729 return $c !== false ? $this->_dbi->getPage($c) : false;
1732 return count($this->_pages);
1735 function asArray() {
1736 reset($this->_pages);
1737 return $this->_pages;
1742 * Data cache used by WikiDB.
1744 * FIXME: Maybe rename this to caching_backend (or some such).
1750 // FIXME: beautify versiondata cache. Cache only limited data?
1752 function WikiDB_cache (&$backend) {
1753 $this->_backend = &$backend;
1755 $this->_pagedata_cache = array();
1756 $this->_versiondata_cache = array();
1757 array_push ($this->_versiondata_cache, array());
1758 $this->_glv_cache = array();
1762 $this->_pagedata_cache = false;
1763 $this->_versiondata_cache = false;
1764 $this->_glv_cache = false;
1767 function get_pagedata($pagename) {
1768 assert(is_string($pagename) && $pagename != '');
1769 $cache = &$this->_pagedata_cache;
1771 if (!isset($cache[$pagename]) || !is_array($cache[$pagename])) {
1772 $cache[$pagename] = $this->_backend->get_pagedata($pagename);
1773 if (empty($cache[$pagename]))
1774 $cache[$pagename] = array();
1777 return $cache[$pagename];
1780 function update_pagedata($pagename, $newdata) {
1781 assert(is_string($pagename) && $pagename != '');
1783 $this->_backend->update_pagedata($pagename, $newdata);
1785 if (is_array($this->_pagedata_cache[$pagename])) {
1786 $cachedata = &$this->_pagedata_cache[$pagename];
1787 foreach($newdata as $key => $val)
1788 $cachedata[$key] = $val;
1792 function invalidate_cache($pagename) {
1793 unset ($this->_pagedata_cache[$pagename]);
1794 unset ($this->_versiondata_cache[$pagename]);
1795 unset ($this->_glv_cache[$pagename]);
1798 function delete_page($pagename) {
1799 $this->_backend->delete_page($pagename);
1800 unset ($this->_pagedata_cache[$pagename]);
1801 unset ($this->_glv_cache[$pagename]);
1805 function cache_data($data) {
1806 if (isset($data['pagedata']))
1807 $this->_pagedata_cache[$data['pagename']] = $data['pagedata'];
1810 function get_versiondata($pagename, $version, $need_content = false) {
1811 // FIXME: Seriously ugly hackage
1812 if (defined('USECACHE') and USECACHE) { //temporary - for debugging
1813 assert(is_string($pagename) && $pagename != '');
1814 // there is a bug here somewhere which results in an assertion failure at line 105
1815 // of ArchiveCleaner.php It goes away if we use the next line.
1816 //$need_content = true;
1817 $nc = $need_content ? '1':'0';
1818 $cache = &$this->_versiondata_cache;
1819 if (!isset($cache[$pagename][$version][$nc])||
1820 !(is_array ($cache[$pagename])) || !(is_array ($cache[$pagename][$version]))) {
1821 $cache[$pagename][$version][$nc] =
1822 $this->_backend->get_versiondata($pagename,$version, $need_content);
1823 // If we have retrieved all data, we may as well set the cache for $need_content = false
1825 $cache[$pagename][$version]['0'] =& $cache[$pagename][$version]['1'];
1828 $vdata = $cache[$pagename][$version][$nc];
1830 $vdata = $this->_backend->get_versiondata($pagename, $version, $need_content);
1833 if ($vdata && !empty($vdata['%pagedata'])) {
1834 $this->_pagedata_cache[$pagename] = $vdata['%pagedata'];
1835 // only store _cached_html for the requested page
1836 if (defined('USECACHE') and USECACHE
1837 and isset($vdata['%pagedata']['_cached_html'])
1838 and $pagename != $GLOBALS['request']->getArg('pagename'))
1840 unset($this->_pagedata_cache[$pagename]['_cached_html']);
1841 unset($cache[$pagename][$version][$nc]['%pagedata']['_cached_html']);
1843 unset($cache[$pagename][$version][0]['%pagedata']['_cached_html']);
1849 function set_versiondata($pagename, $version, $data) {
1850 $new = $this->_backend->set_versiondata($pagename, $version, $data);
1852 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
1854 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
1855 // Is this necessary?
1856 unset($this->_glv_cache[$pagename]);
1859 function update_versiondata($pagename, $version, $data) {
1860 $new = $this->_backend->update_versiondata($pagename, $version, $data);
1862 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
1864 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
1865 // Is this necessary?
1866 unset($this->_glv_cache[$pagename]);
1869 function delete_versiondata($pagename, $version) {
1870 $new = $this->_backend->delete_versiondata($pagename, $version);
1871 unset ($this->_versiondata_cache[$pagename][$version]['1']);
1872 unset ($this->_versiondata_cache[$pagename][$version]['0']);
1873 unset ($this->_glv_cache[$pagename]);
1876 function get_latest_version($pagename) {
1877 if (defined('USECACHE') and USECACHE) {
1878 assert (is_string($pagename) && $pagename != '');
1879 $cache = &$this->_glv_cache;
1880 if (!isset($cache[$pagename])) {
1881 $cache[$pagename] = $this->_backend->get_latest_version($pagename);
1882 if (empty($cache[$pagename]))
1883 $cache[$pagename] = 0;
1885 return $cache[$pagename];
1887 return $this->_backend->get_latest_version($pagename);
1893 // $Log: not supported by cvs2svn $
1894 // Revision 1.74 2004/07/03 16:51:05 rurban
1895 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
1896 // added atomic mysql REPLACE for PearDB as in ADODB
1897 // fixed _lock_tables typo links => link
1898 // fixes unserialize ADODB bug in line 180
1900 // Revision 1.73 2004/06/29 08:52:22 rurban
1901 // Use ...version() $need_content argument in WikiDB also:
1902 // To reduce the memory footprint for larger sets of pagelists,
1903 // we don't cache the content (only true or false) and
1904 // we purge the pagedata (_cached_html) also.
1905 // _cached_html is only cached for the current pagename.
1906 // => Vastly improved page existance check, ACL check, ...
1908 // Now only PagedList info=content or size needs the whole content, esp. if sortable.
1910 // Revision 1.72 2004/06/25 14:15:08 rurban
1911 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
1913 // Revision 1.71 2004/06/21 16:22:30 rurban
1914 // add DEFAULT_DUMP_DIR and HTML_DUMP_DIR constants, for easier cmdline dumps,
1915 // fixed dumping buttons locally (images/buttons/),
1916 // support pages arg for dumphtml,
1917 // optional directory arg for dumpserial + dumphtml,
1918 // fix a AllPages warning,
1919 // show dump warnings/errors on DEBUG,
1920 // don't warn just ignore on wikilens pagelist columns, if not loaded.
1921 // RateIt pagelist column is called "rating", not "ratingwidget" (Dan?)
1923 // Revision 1.70 2004/06/18 14:39:31 rurban
1924 // actually check USECACHE
1926 // Revision 1.69 2004/06/13 15:33:20 rurban
1927 // new support for arguments owner, author, creator in most relevant
1928 // PageList plugins. in WikiAdmin* via preSelectS()
1930 // Revision 1.68 2004/06/08 21:03:20 rurban
1931 // updated RssParser for XmlParser quirks (store parser object params in globals)
1933 // Revision 1.67 2004/06/07 19:12:49 rurban
1934 // fixed rename version=0, bug #966284
1936 // Revision 1.66 2004/06/07 18:57:27 rurban
1937 // fix rename: Change pagename in all linked pages
1939 // Revision 1.65 2004/06/04 20:32:53 rurban
1940 // Several locale related improvements suggested by Pierrick Meignen
1941 // LDAP fix by John Cole
1942 // reanable admin check without ENABLE_PAGEPERM in the admin plugins
1944 // Revision 1.64 2004/06/04 16:50:00 rurban
1945 // add random quotes to empty pages
1947 // Revision 1.63 2004/06/04 11:58:38 rurban
1948 // added USE_TAGLINES
1950 // Revision 1.62 2004/06/03 22:24:41 rurban
1951 // reenable admin check on !ENABLE_PAGEPERM, honor s=Wildcard arg, fix warning after Remove
1953 // Revision 1.61 2004/06/02 17:13:48 rurban
1954 // fix getRevisionBefore assertion
1956 // Revision 1.60 2004/05/28 10:09:58 rurban
1957 // fix bug #962117, incorrect init of auth_dsn
1959 // Revision 1.59 2004/05/27 17:49:05 rurban
1960 // renamed DB_Session to DbSession (in CVS also)
1961 // added WikiDB->getParam and WikiDB->getAuthParam method to get rid of globals
1962 // remove leading slash in error message
1963 // added force_unlock parameter to File_Passwd (no return on stale locks)
1964 // fixed adodb session AffectedRows
1965 // added FileFinder helpers to unify local filenames and DATA_PATH names
1966 // editpage.php: new edit toolbar javascript on ENABLE_EDIT_TOOLBAR
1968 // Revision 1.58 2004/05/18 13:59:14 rurban
1969 // rename simpleQuery to genericQuery
1971 // Revision 1.57 2004/05/16 22:07:35 rurban
1972 // check more config-default and predefined constants
1973 // various PagePerm fixes:
1974 // fix default PagePerms, esp. edit and view for Bogo and Password users
1975 // implemented Creator and Owner
1976 // BOGOUSERS renamed to BOGOUSER
1977 // fixed syntax errors in signin.tmpl
1979 // Revision 1.56 2004/05/15 22:54:49 rurban
1980 // fixed important WikiDB bug with DEBUG > 0: wrong assertion
1981 // improved SetAcl (works) and PagePerms, some WikiGroup helpers.
1983 // Revision 1.55 2004/05/12 19:27:47 rurban
1984 // revert wrong inline optimization.
1986 // Revision 1.54 2004/05/12 10:49:55 rurban
1987 // require_once fix for those libs which are loaded before FileFinder and
1988 // its automatic include_path fix, and where require_once doesn't grok
1989 // dirname(__FILE__) != './lib'
1990 // upgrade fix with PearDB
1991 // navbar.tmpl: remove spaces for IE button alignment
1993 // Revision 1.53 2004/05/08 14:06:12 rurban
1994 // new support for inlined image attributes: [image.jpg size=50x30 align=right]
1995 // minor stability and portability fixes
1997 // Revision 1.52 2004/05/06 19:26:16 rurban
1998 // improve stability, trying to find the InlineParser endless loop on sf.net
2000 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
2002 // Revision 1.51 2004/05/06 17:30:37 rurban
2003 // CategoryGroup: oops, dos2unix eol
2004 // improved phpwiki_version:
2005 // pre -= .0001 (1.3.10pre: 1030.099)
2006 // -p1 += .001 (1.3.9-p1: 1030.091)
2007 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
2008 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
2009 // backend->backendType(), backend->database(),
2010 // backend->listOfFields(),
2011 // backend->listOfTables(),
2013 // Revision 1.50 2004/05/04 22:34:25 rurban
2016 // Revision 1.49 2004/05/03 11:16:40 rurban
2017 // fixed sendPageChangeNotification
2018 // subject rewording
2020 // Revision 1.48 2004/04/29 23:03:54 rurban
2021 // fixed sf.net bug #940996
2023 // Revision 1.47 2004/04/29 19:39:44 rurban
2024 // special support for formatted plugins (one-liners)
2025 // like <small><plugin BlaBla ></small>
2026 // iter->asArray() helper for PopularNearby
2027 // db_session for older php's (no &func() allowed)
2029 // Revision 1.46 2004/04/26 20:44:34 rurban
2030 // locking table specific for better databases
2032 // Revision 1.45 2004/04/20 00:06:03 rurban
2033 // themable paging support
2035 // Revision 1.44 2004/04/19 18:27:45 rurban
2036 // Prevent from some PHP5 warnings (ref args, no :: object init)
2037 // php5 runs now through, just one wrong XmlElement object init missing
2038 // Removed unneccesary UpgradeUser lines
2039 // Changed WikiLink to omit version if current (RecentChanges)
2041 // Revision 1.43 2004/04/18 01:34:20 rurban
2042 // protect most_popular from sortby=mtime
2044 // Revision 1.42 2004/04/18 01:11:51 rurban
2045 // more numeric pagename fixes.
2046 // fixed action=upload with merge conflict warnings.
2047 // charset changed from constant to global (dynamic utf-8 switching)
2053 // c-basic-offset: 4
2054 // c-hanging-comment-ender-p: nil
2055 // indent-tabs-mode: nil