2 rcs_id('$Id: WikiDB.php,v 1.106 2004-11-20 17:35:56 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 $GLOBALS['request']->_dbi = $this;
121 // If the database doesn't yet have a timestamp, initialize it now.
122 if ($this->get('_timestamp') === false)
125 //FIXME: devel checking.
126 //$this->_backend->check();
130 * Get any user-level warnings about this WikiDB.
132 * Some back-ends, e.g. by default create there data files in the
133 * global /tmp directory. We would like to warn the user when this
134 * happens (since /tmp files tend to get wiped periodically.)
135 * Warnings such as these may be communicated from specific
136 * back-ends through this method.
140 * @return string A warning message (or <tt>false</tt> if there is
143 function genericWarnings() {
148 * Close database connection.
150 * The database may no longer be used after it is closed.
152 * Closing a WikiDB invalidates all <tt>WikiDB_Page</tt>s,
153 * <tt>WikiDB_PageRevision</tt>s and <tt>WikiDB_PageIterator</tt>s
154 * which have been obtained from it.
159 $this->_backend->close();
160 $this->_cache->close();
164 * Get a WikiDB_Page from a WikiDB.
166 * A {@link WikiDB} consists of the (infinite) set of all possible pages,
167 * therefore this method never fails.
170 * @param string $pagename Which page to get.
171 * @return WikiDB_Page The requested WikiDB_Page.
173 function getPage($pagename) {
174 static $error_displayed = false;
175 $pagename = (string) $pagename;
177 if ($pagename === '') {
178 if ($error_displayed) return false;
179 $error_displayed = true;
180 if (function_exists("xdebug_get_function_stack"))
181 var_dump(xdebug_get_function_stack());
182 trigger_error("empty pagename", E_USER_WARNING);
186 assert($pagename != '');
188 return new WikiDB_Page($this, $pagename);
192 * Determine whether page exists (in non-default form).
195 * $is_page = $dbi->isWikiPage($pagename);
199 * $page = $dbi->getPage($pagename);
200 * $current = $page->getCurrentRevision();
201 * $is_page = ! $current->hasDefaultContents();
203 * however isWikiPage may be implemented in a more efficient
204 * manner in certain back-ends.
208 * @param string $pagename string Which page to check.
210 * @return boolean True if the page actually exists with
211 * non-default contents in the WikiDataBase.
213 function isWikiPage ($pagename) {
214 $page = $this->getPage($pagename);
215 return $page->exists();
219 * Delete page from the WikiDB.
221 * Deletes all revisions of the page from the WikiDB. Also resets
222 * all page meta-data to the default values.
226 * @param string $pagename Name of page to delete.
228 function deletePage($pagename) {
229 $this->_cache->delete_page($pagename);
231 /* Generate notification emails? */
232 if (! $this->isWikiPage($pagename) ) {
233 $notify = $this->get('notify');
234 if (!empty($notify) and is_array($notify)) {
235 //TODO: deferr it (quite a massive load if you remove some pages).
236 //TODO: notification class which catches all changes,
237 // and decides at the end of the request what to mail. (type, page, who, what, users, emails)
238 // could be used for PageModeration also.
239 $page = new WikiDB_Page($this, $pagename);
240 list($emails, $userids) = $page->getPageChangeEmails($notify);
241 if (!empty($emails)) {
242 $editedby = sprintf(_("Removed by: %s"), $GLOBALS['request']->_user->getId()); // Todo: host_id
243 $emails = join(',', $emails);
244 $subject = sprintf(_("Page deleted %s"), urlencode($pagename));
245 if (mail($emails,"[".WIKI_NAME."] ".$subject,
248 "Deleted $pagename"))
249 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
250 $pagename, join(',',$userids)), E_USER_NOTICE);
252 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
253 $pagename, join(',',$userids)), E_USER_WARNING);
258 //How to create a RecentChanges entry with explaining summary? Dynamically
260 $page = $this->getPage($pagename);
261 $current = $page->getCurrentRevision();
262 $meta = $current->_data;
263 $version = $current->getVersion();
264 $meta['summary'] = _("removed");
265 $page->save($current->getPackedContent(), $version + 1, $meta);
270 * Retrieve all pages.
272 * Gets the set of all pages with non-default contents.
276 * @param boolean $include_defaulted Normally pages whose most
277 * recent revision has empty content are considered to be
278 * non-existant. Unless $include_defaulted is set to true, those
279 * pages will not be returned.
281 * @return WikiDB_PageIterator A WikiDB_PageIterator which contains all pages
282 * in the WikiDB which have non-default contents.
284 function getAllPages($include_empty=false, $sortby=false, $limit=false, $exclude=false) {
285 // HACK: memory_limit=8M will fail on too large pagesets. old php on unix only!
287 $mem = ini_get("memory_limit");
288 if ($mem and !$limit and !isWindows() and !check_php_version(4,3)) {
290 $GLOBALS['request']->setArg('limit',$limit);
291 $GLOBALS['request']->setArg('paging','auto');
294 $result = $this->_backend->get_all_pages($include_empty, $sortby, $limit, $exclude);
295 return new WikiDB_PageIterator($this, $result, array('include_empty' => $include_empty,
296 'exclude' => $exclude,
301 * filter = true: include also empty pages
302 * exclude: comma-seperated list pagenames
304 function numPages($filter=false, $exclude='') {
305 if (method_exists($this->_backend, 'numPages'))
306 // FIXME: currently are all args ignored.
307 $count = $this->_backend->numPages($filter, $exclude);
309 // FIXME: exclude ignored.
310 $iter = $this->getAllPages($filter, false, false, $exclude);
311 $count = $iter->count();
320 * Search for pages containing (or not containing) certain words
323 * Pages are returned in alphabetical order whenever it is
324 * practical to do so.
326 * FIXME: should titleSearch and fullSearch be combined? I think so.
329 * @param TextSearchQuery $search A TextSearchQuery object
330 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
331 * @see TextSearchQuery
333 function titleSearch($search) {
334 $result = $this->_backend->text_search($search);
335 return new WikiDB_PageIterator($this, $result);
341 * Search for pages containing (or not containing) certain words
342 * in their entire text (this includes the page content and the
345 * Pages are returned in alphabetical order whenever it is
346 * practical to do so.
350 * @param TextSearchQuery $search A TextSearchQuery object.
351 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
352 * @see TextSearchQuery
354 function fullSearch($search) {
355 $result = $this->_backend->text_search($search, 'full_text');
356 return new WikiDB_PageIterator($this, $result);
360 * Find the pages with the greatest hit counts.
362 * Pages are returned in reverse order by hit count.
366 * @param integer $limit The maximum number of pages to return.
367 * Set $limit to zero to return all pages. If $limit < 0, pages will
368 * be sorted in decreasing order of popularity.
370 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching
373 function mostPopular($limit = 20, $sortby = '-hits') {
374 $result = $this->_backend->most_popular($limit, $sortby);
375 return new WikiDB_PageIterator($this, $result);
379 * Find recent page revisions.
381 * Revisions are returned in reverse order by creation time.
385 * @param hash $params This hash is used to specify various optional
389 * <dd> (integer) At most this many revisions will be returned.
391 * <dd> (integer) Only revisions since this time (unix-timestamp) will be returned.
392 * <dt> include_minor_revisions
393 * <dd> (boolean) Also include minor revisions. (Default is not to.)
394 * <dt> exclude_major_revisions
395 * <dd> (boolean) Don't include non-minor revisions.
396 * (Exclude_major_revisions implies include_minor_revisions.)
397 * <dt> include_all_revisions
398 * <dd> (boolean) Return all matching revisions for each page.
399 * Normally only the most recent matching revision is returned
403 * @return WikiDB_PageRevisionIterator A WikiDB_PageRevisionIterator containing the
404 * matching revisions.
406 function mostRecent($params = false) {
407 $result = $this->_backend->most_recent($params);
408 return new WikiDB_PageRevisionIterator($this, $result);
414 * @return Iterator A generic iterator containing rows of (duplicate) pagename, wantedfrom.
416 function wantedPages($exclude_from='', $exclude='', $sortby=false, $limit=false) {
417 return $this->_backend->wanted_pages($exclude_from, $exclude, $sortby, $limit);
418 //return new WikiDB_PageIterator($this, $result);
423 * Call the appropriate backend method.
426 * @param string $from Page to rename
427 * @param string $to New name
428 * @param boolean $updateWikiLinks If the text in all pages should be replaced.
429 * @return boolean true or false
431 function renamePage($from, $to, $updateWikiLinks = false) {
432 assert(is_string($from) && $from != '');
433 assert(is_string($to) && $to != '');
435 if (method_exists($this->_backend, 'rename_page')) {
436 $oldpage = $this->getPage($from);
437 $newpage = $this->getPage($to);
438 //update all WikiLinks in existing pages
439 //non-atomic! i.e. if rename fails the links are not undone
440 if ($updateWikiLinks) {
441 require_once('lib/plugin/WikiAdminSearchReplace.php');
442 $links = $oldpage->getBackLinks();
443 while ($linked_page = $links->next()) {
444 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,$linked_page->getName(),$from,$to);
446 $links = $newpage->getBackLinks();
447 while ($linked_page = $links->next()) {
448 WikiPlugin_WikiAdminSearchReplace::replaceHelper($this,$linked_page->getName(),$from,$to);
451 if ($oldpage->exists() and ! $newpage->exists()) {
452 if ($result = $this->_backend->rename_page($from, $to)) {
453 //create a RecentChanges entry with explaining summary
454 $page = $this->getPage($to);
455 $current = $page->getCurrentRevision();
456 $meta = $current->_data;
457 $version = $current->getVersion();
458 $meta['summary'] = sprintf(_("renamed from %s"), $from);
459 $page->save($current->getPackedContent(), $version + 1, $meta);
461 } elseif (!$oldpage->getCurrentRevision(false) and !$newpage->exists()) {
462 // if a version 0 exists try it also.
463 $result = $this->_backend->rename_page($from, $to);
466 trigger_error(_("WikiDB::renamePage() not yet implemented for this backend"),
469 /* Generate notification emails? */
471 $notify = $this->get('notify');
472 if (!empty($notify) and is_array($notify)) {
473 list($emails, $userids) = $oldpage->getPageChangeEmails($notify);
474 if (!empty($emails)) {
475 $oldpage->sendPageRenameNotification($to, &$meta, $emails, $userids);
482 /** Get timestamp when database was last modified.
484 * @return string A string consisting of two integers,
485 * separated by a space. The first is the time in
486 * unix timestamp format, the second is a modification
487 * count for the database.
489 * The idea is that you can cast the return value to an
490 * int to get a timestamp, or you can use the string value
491 * as a good hash for the entire database.
493 function getTimestamp() {
494 $ts = $this->get('_timestamp');
495 return sprintf("%d %d", $ts[0], $ts[1]);
499 * Update the database timestamp.
503 $ts = $this->get('_timestamp');
504 $this->set('_timestamp', array(time(), $ts[1] + 1));
509 * Access WikiDB global meta-data.
511 * NOTE: this is currently implemented in a hackish and
512 * not very efficient manner.
516 * @param string $key Which meta data to get.
517 * Some reserved meta-data keys are:
519 * <dt>'_timestamp' <dd> Data used by getTimestamp().
522 * @return scalar The requested value, or false if the requested data
526 if (!$key || $key[0] == '%')
529 * Hack Alert: We can use any page (existing or not) to store
530 * this data (as long as we always use the same one.)
532 $gd = $this->getPage('global_data');
533 $data = $gd->get('__global');
535 if ($data && isset($data[$key]))
542 * Set global meta-data.
544 * NOTE: this is currently implemented in a hackish and
545 * not very efficient manner.
550 * @param string $key Meta-data key to set.
551 * @param string $newval New value.
553 function set($key, $newval) {
554 if (!$key || $key[0] == '%')
557 $gd = $this->getPage('global_data');
558 $data = $gd->get('__global');
565 $data[$key] = $newval;
567 $gd->set('__global', $data);
570 // SQL result: for simple select or create/update queries
571 // returns the database specific resource type
572 function genericSqlQuery($sql) {
573 if (function_exists('debug_backtrace')) { // >= 4.3.0
574 echo "<pre>", printSimpleTrace(debug_backtrace()), "</pre>\n";
576 trigger_error("no SQL database", E_USER_ERROR);
580 // SQL iter: for simple select or create/update queries
581 // returns the generic iterator object (count,next)
582 function genericSqlIter($sql, $field_list = NULL) {
583 if (function_exists('debug_backtrace')) { // >= 4.3.0
584 echo "<pre>", printSimpleTrace(debug_backtrace()), "</pre>\n";
586 trigger_error("no SQL database", E_USER_ERROR);
590 // see upstream methods:
591 // ADODB adds surrounding quotes, SQL not yet!
592 function quote ($s) {
598 if (!$request->_dbi) return false;
599 else return false; /* so far only needed for sql so false it.
600 later we have to check dba also */
603 function getParam($param) {
605 if (isset($DBParams[$param])) return $DBParams[$param];
606 elseif ($param == 'prefix') return '';
610 function getAuthParam($param) {
611 global $DBAuthParams;
612 if (isset($DBAuthParams[$param])) return $DBAuthParams[$param];
613 elseif ($param == 'USER_AUTH_ORDER') return $GLOBALS['USER_AUTH_ORDER'];
614 elseif ($param == 'USER_AUTH_POLICY') return $GLOBALS['USER_AUTH_POLICY'];
621 * An abstract base class which representing a wiki-page within a
624 * A WikiDB_Page contains a number (at least one) of
625 * WikiDB_PageRevisions.
629 function WikiDB_Page(&$wikidb, $pagename) {
630 $this->_wikidb = &$wikidb;
631 $this->_pagename = $pagename;
633 if (!(is_string($pagename) and $pagename != '')) {
634 if (function_exists("xdebug_get_function_stack")) {
635 echo "xdebug_get_function_stack(): "; var_dump(xdebug_get_function_stack());
636 } elseif (function_exists("debug_backtrace")) { // >= 4.3.0
637 printSimpleTrace(debug_backtrace());
639 trigger_error("empty pagename", E_USER_WARNING);
643 assert(is_string($pagename) and $pagename != '');
647 * Get the name of the wiki page.
651 * @return string The page name.
654 return $this->_pagename;
657 // To reduce the memory footprint for larger sets of pagelists,
658 // we don't cache the content (only true or false) and
659 // we purge the pagedata (_cached_html) also
661 if (isset($this->_wikidb->_cache->_id_cache[$this->_pagename])) return true;
662 $current = $this->getCurrentRevision(false);
663 return ! $current->hasDefaultContents();
667 * Delete an old revision of a WikiDB_Page.
669 * Deletes the specified revision of the page.
670 * It is a fatal error to attempt to delete the current revision.
674 * @param integer $version Which revision to delete. (You can also
675 * use a WikiDB_PageRevision object here.)
677 function deleteRevision($version) {
678 $backend = &$this->_wikidb->_backend;
679 $cache = &$this->_wikidb->_cache;
680 $pagename = &$this->_pagename;
682 $version = $this->_coerce_to_version($version);
686 $backend->lock(array('page','version'));
687 $latestversion = $cache->get_latest_version($pagename);
688 if ($latestversion && $version == $latestversion) {
689 $backend->unlock(array('page','version'));
690 trigger_error(sprintf("Attempt to delete most recent revision of '%s'",
691 $pagename), E_USER_ERROR);
695 $cache->delete_versiondata($pagename, $version);
696 $backend->unlock(array('page','version'));
700 * Delete a revision, or possibly merge it with a previous
704 * Suppose an author make a (major) edit to a page. Shortly
705 * after that the same author makes a minor edit (e.g. to fix
706 * spelling mistakes he just made.)
708 * Now some time later, where cleaning out old saved revisions,
709 * and would like to delete his minor revision (since there's
710 * really no point in keeping minor revisions around for a long
713 * Note that the text after the minor revision probably represents
714 * what the author intended to write better than the text after
715 * the preceding major edit.
717 * So what we really want to do is merge the minor edit with the
720 * We will only do this when:
722 * <li>The revision being deleted is a minor one, and
723 * <li>It has the same author as the immediately preceding revision.
726 function mergeRevision($version) {
727 $backend = &$this->_wikidb->_backend;
728 $cache = &$this->_wikidb->_cache;
729 $pagename = &$this->_pagename;
731 $version = $this->_coerce_to_version($version);
735 $backend->lock(array('version'));
736 $latestversion = $cache->get_latest_version($pagename);
737 if ($latestversion && $version == $latestversion) {
738 $backend->unlock(array('version'));
739 trigger_error(sprintf("Attempt to merge most recent revision of '%s'",
740 $pagename), E_USER_ERROR);
744 $versiondata = $cache->get_versiondata($pagename, $version, true);
746 // Not there? ... we're done!
747 $backend->unlock(array('version'));
751 if ($versiondata['is_minor_edit']) {
752 $previous = $backend->get_previous_version($pagename, $version);
754 $prevdata = $cache->get_versiondata($pagename, $previous);
755 if ($prevdata['author_id'] == $versiondata['author_id']) {
756 // This is a minor revision, previous version is
757 // by the same author. We will merge the
759 $cache->update_versiondata($pagename, $previous,
760 array('%content' => $versiondata['%content'],
761 '_supplanted' => $versiondata['_supplanted']));
766 $cache->delete_versiondata($pagename, $version);
767 $backend->unlock(array('version'));
772 * Create a new revision of a {@link WikiDB_Page}.
776 * @param int $version Version number for new revision.
777 * To ensure proper serialization of edits, $version must be
778 * exactly one higher than the current latest version.
779 * (You can defeat this check by setting $version to
780 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
782 * @param string $content Contents of new revision.
784 * @param hash $metadata Metadata for new revision.
785 * All values in the hash should be scalars (strings or integers).
787 * @param array $links List of pagenames which this page links to.
789 * @return WikiDB_PageRevision Returns the new WikiDB_PageRevision object. If
790 * $version was incorrect, returns false
792 function createRevision($version, &$content, $metadata, $links) {
793 $backend = &$this->_wikidb->_backend;
794 $cache = &$this->_wikidb->_cache;
795 $pagename = &$this->_pagename;
796 $cache->invalidate_cache($pagename);
798 $backend->lock(array('version','page','recent','link','nonempty'));
800 $latestversion = $backend->get_latest_version($pagename);
801 $newversion = ($latestversion ? $latestversion : 0) + 1;
802 assert($newversion >= 1);
804 if ($version != WIKIDB_FORCE_CREATE and $version != $newversion) {
805 $backend->unlock(array('version','page','recent','link','nonempty'));
811 foreach ($data as $key => $val) {
812 if (empty($val) || $key[0] == '_' || $key[0] == '%')
816 assert(!empty($data['author']));
817 if (empty($data['author_id']))
818 @$data['author_id'] = $data['author'];
820 if (empty($data['mtime']))
821 $data['mtime'] = time();
823 if ($latestversion) {
824 // Ensure mtimes are monotonic.
825 $pdata = $cache->get_versiondata($pagename, $latestversion);
826 if ($data['mtime'] < $pdata['mtime']) {
827 trigger_error(sprintf(_("%s: Date of new revision is %s"),
828 $pagename,"'non-monotonic'"),
830 $data['orig_mtime'] = $data['mtime'];
831 $data['mtime'] = $pdata['mtime'];
834 // FIXME: use (possibly user specified) 'mtime' time or
836 $cache->update_versiondata($pagename, $latestversion,
837 array('_supplanted' => $data['mtime']));
840 $data['%content'] = &$content;
842 $cache->set_versiondata($pagename, $newversion, $data);
844 //$cache->update_pagedata($pagename, array(':latestversion' => $newversion,
845 //':deleted' => empty($content)));
847 $backend->set_links($pagename, $links);
849 $backend->unlock(array('version','page','recent','link','nonempty'));
851 return new WikiDB_PageRevision($this->_wikidb, $pagename, $newversion,
855 /** A higher-level interface to createRevision.
857 * This takes care of computing the links, and storing
858 * a cached version of the transformed wiki-text.
860 * @param string $wikitext The page content.
862 * @param int $version Version number for new revision.
863 * To ensure proper serialization of edits, $version must be
864 * exactly one higher than the current latest version.
865 * (You can defeat this check by setting $version to
866 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
868 * @param hash $meta Meta-data for new revision.
870 function save($wikitext, $version, $meta) {
871 $formatted = new TransformedText($this, $wikitext, $meta);
872 $type = $formatted->getType();
873 $meta['pagetype'] = $type->getName();
874 $links = $formatted->getWikiPageLinks();
876 $backend = &$this->_wikidb->_backend;
877 $newrevision = $this->createRevision($version, $wikitext, $meta, $links);
878 if ($newrevision and !WIKIDB_NOCACHE_MARKUP)
879 $this->set('_cached_html', $formatted->pack());
881 // FIXME: probably should have some global state information
882 // in the backend to control when to optimize.
884 // We're doing this here rather than in createRevision because
885 // postgres can't optimize while locked.
886 if (DEBUG or (time() % 50 == 0)) {
887 if ($backend->optimize())
888 trigger_error(_("Optimizing database"), E_USER_NOTICE);
891 /* Generate notification emails? */
892 if (isa($newrevision, 'WikiDB_PageRevision')) {
893 // Save didn't fail because of concurrent updates.
894 $notify = $this->_wikidb->get('notify');
895 if (!empty($notify) and is_array($notify)) {
896 list($emails, $userids) = $this->getPageChangeEmails($notify);
897 if (!empty($emails)) {
898 $this->sendPageChangeNotification($wikitext, $version, $meta, $emails, $userids);
903 $newrevision->_transformedContent = $formatted;
907 function getPageChangeEmails($notify) {
908 $emails = array(); $userids = array();
909 foreach ($notify as $page => $users) {
910 if (glob_match($page, $this->_pagename)) {
911 foreach ($users as $userid => $user) {
912 if (!$user) { // handle the case for ModeratePage: no prefs, just userid's.
914 $u = $request->getUser();
915 if ($u->UserName() == $userid) {
916 $prefs = $u->getPreferences();
919 if (ENABLE_USER_NEW) {
920 $u = WikiUser($userid);
921 $u->getPreferences();
922 $prefs = &$u->_prefs;
924 $u = new WikiUser($GLOBALS['request'], $userid);
925 $prefs = $u->getPreferences();
928 $emails[] = $prefs->get('email');
929 $userids[] = $userid;
931 if (!empty($user['verified']) and !empty($user['email'])) {
932 $emails[] = $user['email'];
933 $userids[] = $userid;
934 } elseif (!empty($user['email'])) {
936 // do a dynamic emailVerified check update
937 $u = $request->getUser();
938 if ($u->UserName() == $userid) {
939 if ($request->_prefs->get('emailVerified')) {
940 $emails[] = $user['email'];
941 $userids[] = $userid;
942 $notify[$page][$userid]['verified'] = 1;
943 $request->_dbi->set('notify', $notify);
947 if (ENABLE_USER_NEW) {
948 $u = WikiUser($userid);
949 $u->getPreferences();
950 $prefs = &$u->_prefs;
952 $u = new WikiUser($GLOBALS['request'], $userid);
953 $prefs = $u->getPreferences();
955 if ($prefs->get('emailVerified')) {
956 $emails[] = $user['email'];
957 $userids[] = $userid;
958 $notify[$page][$userid]['verified'] = 1;
959 $request->_dbi->set('notify', $notify);
962 // ignore verification
965 if (!in_array($user['email'],$emails))
966 $emails[] = $user['email'];
974 $emails = array_unique($emails);
975 $userids = array_unique($userids);
976 return array($emails, $userids);
980 * Send udiff for a changed page to multiple users.
981 * See rename and remove methods also
983 function sendPageChangeNotification(&$wikitext, $version, $meta, $emails, $userids) {
985 if (@is_array($request->_deferredPageChangeNotification)) {
986 // collapse multiple changes (loaddir) into one email
987 $request->_deferredPageChangeNotification[] = array($this->_pagename, $emails, $userids);
990 $backend = &$this->_wikidb->_backend;
991 //$backend = &$request->_dbi->_backend;
992 $subject = _("Page change").' '.urlencode($this->_pagename);
993 $previous = $backend->get_previous_version($this->_pagename, $version);
994 if (!isset($meta['mtime'])) $meta['mtime'] = time();
996 $difflink = WikiURL($this->_pagename, array('action'=>'diff'), true);
997 $cache = &$this->_wikidb->_cache;
998 //$cache = &$request->_dbi->_cache;
999 $this_content = explode("\n", $wikitext);
1000 $prevdata = $cache->get_versiondata($this->_pagename, $previous, true);
1001 if (empty($prevdata['%content']))
1002 $prevdata = $backend->get_versiondata($this->_pagename, $previous, true);
1003 $other_content = explode("\n", $prevdata['%content']);
1005 include_once("lib/difflib.php");
1006 $diff2 = new Diff($other_content, $this_content);
1007 //$context_lines = max(4, count($other_content) + 1,
1008 // count($this_content) + 1);
1009 $fmt = new UnifiedDiffFormatter(/*$context_lines*/);
1010 $content = $this->_pagename . " " . $previous . " " . Iso8601DateTime($prevdata['mtime']) . "\n";
1011 $content .= $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
1012 $content .= $fmt->format($diff2);
1015 $difflink = WikiURL($this->_pagename,array(),true);
1016 $content = $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
1017 $content .= _("New Page");
1019 $editedby = sprintf(_("Edited by: %s"), $meta['author']);
1020 $emails = join(',',$emails);
1021 if (mail($emails,"[".WIKI_NAME."] ".$subject,
1026 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
1027 $this->_pagename, join(',',$userids)), E_USER_NOTICE);
1029 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
1030 $this->_pagename, join(',',$userids)), E_USER_WARNING);
1033 /** support mass rename / remove (not yet tested)
1035 function sendPageRenameNotification($to, &$meta, $emails, $userids) {
1037 if (@is_array($request->_deferredPageRenameNotification)) {
1038 $request->_deferredPageRenameNotification[] = array($this->_pagename, $to, $meta, $emails, $userids);
1040 $from = $this->_pagename;
1041 $editedby = sprintf(_("Edited by: %s"), $meta['author']) . ' ' . $meta['author_id'];
1042 $emails = join(',',$emails);
1043 $subject = sprintf(_("Page rename %s to %s"), urlencode($from), urlencode($to));
1044 $link = WikiURL($to, true);
1045 if (mail($emails,"[".WIKI_NAME."] ".$subject,
1049 "Renamed $from to $to"))
1050 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
1051 $from, join(',',$userids)), E_USER_NOTICE);
1053 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
1054 $from, join(',',$userids)), E_USER_WARNING);
1059 * Get the most recent revision of a page.
1063 * @return WikiDB_PageRevision The current WikiDB_PageRevision object.
1065 function getCurrentRevision($need_content = true) {
1066 $backend = &$this->_wikidb->_backend;
1067 $cache = &$this->_wikidb->_cache;
1068 $pagename = &$this->_pagename;
1070 // Prevent deadlock in case of memory exhausted errors
1071 // Pure selection doesn't really need locking here.
1072 // sf.net bug#927395
1073 // I know it would be better to lock, but with lots of pages this deadlock is more
1074 // severe than occasionally get not the latest revision.
1075 // In spirit to wikiwiki: read fast, edit slower.
1077 $version = $cache->get_latest_version($pagename);
1078 // getRevision gets the content also!
1079 $revision = $this->getRevision($version, $need_content);
1080 //$backend->unlock();
1086 * Get a specific revision of a WikiDB_Page.
1090 * @param integer $version Which revision to get.
1092 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or
1093 * false if the requested revision does not exist in the {@link WikiDB}.
1094 * Note that version zero of any page always exists.
1096 function getRevision($version, $need_content=true) {
1097 $cache = &$this->_wikidb->_cache;
1098 $pagename = &$this->_pagename;
1100 if (! $version ) // 0 or false
1101 return new WikiDB_PageRevision($this->_wikidb, $pagename, 0);
1103 assert($version > 0);
1104 $vdata = $cache->get_versiondata($pagename, $version, $need_content);
1108 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
1113 * Get previous page revision.
1115 * This method find the most recent revision before a specified
1120 * @param integer $version Find most recent revision before this version.
1121 * You can also use a WikiDB_PageRevision object to specify the $version.
1123 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or false if the
1124 * requested revision does not exist in the {@link WikiDB}. Note that
1125 * unless $version is greater than zero, a revision (perhaps version zero,
1126 * the default revision) will always be found.
1128 function getRevisionBefore($version, $need_content=true) {
1129 $backend = &$this->_wikidb->_backend;
1130 $pagename = &$this->_pagename;
1132 $version = $this->_coerce_to_version($version);
1137 $previous = $backend->get_previous_version($pagename, $version);
1138 $revision = $this->getRevision($previous, $need_content);
1139 //$backend->unlock();
1145 * Get all revisions of the WikiDB_Page.
1147 * This does not include the version zero (default) revision in the
1148 * returned revision set.
1150 * @return WikiDB_PageRevisionIterator A
1151 * WikiDB_PageRevisionIterator containing all revisions of this
1152 * WikiDB_Page in reverse order by version number.
1154 function getAllRevisions() {
1155 $backend = &$this->_wikidb->_backend;
1156 $revs = $backend->get_all_revisions($this->_pagename);
1157 return new WikiDB_PageRevisionIterator($this->_wikidb, $revs);
1161 * Find pages which link to or are linked from a page.
1165 * @param boolean $reversed Which links to find: true for backlinks (default).
1167 * @return WikiDB_PageIterator A WikiDB_PageIterator containing
1168 * all matching pages.
1170 function getLinks($reversed = true, $include_empty=false) {
1171 $backend = &$this->_wikidb->_backend;
1172 $result = $backend->get_links($this->_pagename, $reversed, $include_empty);
1173 return new WikiDB_PageIterator($this->_wikidb, $result, array('include_empty' => $include_empty));
1177 * All Links from other pages to this page.
1179 function getBackLinks($include_empty=false) {
1180 return $this->getLinks(true, $include_empty);
1183 * Forward Links: All Links from this page to other pages.
1185 function getPageLinks($include_empty=false) {
1186 return $this->getLinks(false, $include_empty);
1190 * possibly faster link existance check. not yet accelerated.
1192 function existLink($link, $reversed = false) {
1193 $cache = &$this->_wikidb->_cache;
1194 // TODO: check cache if it is possible
1195 $iter = $this->getLinks($reversed, false);
1196 while ($page = $iter->next()) {
1197 if ($page->getName() == $link)
1205 * Access WikiDB_Page meta-data.
1209 * @param string $key Which meta data to get.
1210 * Some reserved meta-data keys are:
1212 * <dt>'locked'<dd> Is page locked?
1213 * <dt>'hits' <dd> Page hit counter.
1214 * <dt>'pref' <dd> Users preferences, stored in homepages.
1215 * <dt>'owner' <dd> Default: first author_id. We might add a group with a dot here:
1216 * E.g. "owner.users"
1217 * <dt>'perm' <dd> Permission flag to authorize read/write/execution of
1218 * page-headers and content.
1219 * <dt>'score' <dd> Page score (not yet implement, do we need?)
1222 * @return scalar The requested value, or false if the requested data
1225 function get($key) {
1226 $cache = &$this->_wikidb->_cache;
1227 if (!$key || $key[0] == '%')
1229 $data = $cache->get_pagedata($this->_pagename);
1230 return isset($data[$key]) ? $data[$key] : false;
1234 * Get all the page meta-data as a hash.
1236 * @return hash The page meta-data.
1238 function getMetaData() {
1239 $cache = &$this->_wikidb->_cache;
1240 $data = $cache->get_pagedata($this->_pagename);
1242 foreach ($data as $key => $val) {
1243 if (/*!empty($val) &&*/ $key[0] != '%')
1250 * Set page meta-data.
1255 * @param string $key Meta-data key to set.
1256 * @param string $newval New value.
1258 function set($key, $newval) {
1259 $cache = &$this->_wikidb->_cache;
1260 $pagename = &$this->_pagename;
1262 assert($key && $key[0] != '%');
1264 $data = $cache->get_pagedata($pagename);
1266 if (!empty($newval)) {
1267 if (!empty($data[$key]) && $data[$key] == $newval)
1268 return; // values identical, skip update.
1271 if (empty($data[$key]))
1272 return; // values identical, skip update.
1275 $cache->update_pagedata($pagename, array($key => $newval));
1279 * Increase page hit count.
1281 * FIXME: IS this needed? Probably not.
1283 * This is a convenience function.
1284 * <pre> $page->increaseHitCount(); </pre>
1285 * is functionally identical to
1286 * <pre> $page->set('hits',$page->get('hits')+1); </pre>
1287 * but less expensive (ignores the pagadata string)
1289 * Note that this method may be implemented in more efficient ways
1290 * in certain backends.
1294 function increaseHitCount() {
1295 if (method_exists($this->_wikidb->_backend, 'increaseHitCount'))
1296 $this->_wikidb->_backend->increaseHitCount($this->_pagename);
1298 @$newhits = $this->get('hits') + 1;
1299 $this->set('hits', $newhits);
1304 * Return a string representation of the WikiDB_Page
1306 * This is really only for debugging.
1310 * @return string Printable representation of the WikiDB_Page.
1312 function asString () {
1314 printf("[%s:%s\n", get_class($this), $this->getName());
1315 print_r($this->getMetaData());
1317 $strval = ob_get_contents();
1325 * @param integer_or_object $version_or_pagerevision
1326 * Takes either the version number (and int) or a WikiDB_PageRevision
1328 * @return integer The version number.
1330 function _coerce_to_version($version_or_pagerevision) {
1331 if (method_exists($version_or_pagerevision, "getContent"))
1332 $version = $version_or_pagerevision->getVersion();
1334 $version = (int) $version_or_pagerevision;
1336 assert($version >= 0);
1340 function isUserPage ($include_empty = true) {
1341 if (!$include_empty and !$this->exists()) return false;
1342 return $this->get('pref') ? true : false;
1345 // May be empty. Either the stored owner (/Chown), or the first authorized author
1346 function getOwner() {
1347 if ($owner = $this->get('owner'))
1348 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1349 // check all revisions forwards for the first author_id
1350 $backend = &$this->_wikidb->_backend;
1351 $pagename = &$this->_pagename;
1352 $latestversion = $backend->get_latest_version($pagename);
1353 for ($v=1; $v <= $latestversion; $v++) {
1354 $rev = $this->getRevision($v,false);
1355 if ($rev and $owner = $rev->get('author_id')) {
1356 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1362 // The authenticated author of the first revision or empty if not authenticated then.
1363 function getCreator() {
1364 if ($current = $this->getRevision(1,false)) return $current->get('author_id');
1368 // The authenticated author of the current revision.
1369 function getAuthor() {
1370 if ($current = $this->getCurrentRevision(false)) return $current->get('author_id');
1377 * This class represents a specific revision of a WikiDB_Page within
1380 * A WikiDB_PageRevision has read-only semantics. You may only create
1381 * new revisions (and delete old ones) --- you cannot modify existing
1384 class WikiDB_PageRevision
1386 //var $_transformedContent = false; // set by WikiDB_Page::save()
1388 function WikiDB_PageRevision(&$wikidb, $pagename, $version, $versiondata = false) {
1389 $this->_wikidb = &$wikidb;
1390 $this->_pagename = $pagename;
1391 $this->_version = $version;
1392 $this->_data = $versiondata ? $versiondata : array();
1393 $this->_transformedContent = false; // set by WikiDB_Page::save()
1397 * Get the WikiDB_Page which this revision belongs to.
1401 * @return WikiDB_Page The WikiDB_Page which this revision belongs to.
1403 function getPage() {
1404 return new WikiDB_Page($this->_wikidb, $this->_pagename);
1408 * Get the version number of this revision.
1412 * @return integer The version number of this revision.
1414 function getVersion() {
1415 return $this->_version;
1419 * Determine whether this revision has defaulted content.
1421 * The default revision (version 0) of each page, as well as any
1422 * pages which are created with empty content have their content
1423 * defaulted to something like:
1425 * Describe [ThisPage] here.
1430 * @return boolean Returns true if the page has default content.
1432 function hasDefaultContents() {
1433 $data = &$this->_data;
1434 return empty($data['%content']); // FIXME: what if it's the number 0? <>'' or === false
1438 * Get the content as an array of lines.
1442 * @return array An array of lines.
1443 * The lines should contain no trailing white space.
1445 function getContent() {
1446 return explode("\n", $this->getPackedContent());
1450 * Get the pagename of the revision.
1454 * @return string pagename.
1456 function getPageName() {
1457 return $this->_pagename;
1461 * Determine whether revision is the latest.
1465 * @return boolean True iff the revision is the latest (most recent) one.
1467 function isCurrent() {
1468 if (!isset($this->_iscurrent)) {
1469 $page = $this->getPage();
1470 $current = $page->getCurrentRevision(false);
1471 $this->_iscurrent = $this->getVersion() == $current->getVersion();
1473 return $this->_iscurrent;
1477 * Get the transformed content of a page.
1479 * @param string $pagetype Override the page-type of the revision.
1481 * @return object An XmlContent-like object containing the page transformed
1484 function getTransformedContent($pagetype_override=false) {
1485 $backend = &$this->_wikidb->_backend;
1487 if ($pagetype_override) {
1488 // Figure out the normal page-type for this page.
1489 $type = PageType::GetPageType($this->get('pagetype'));
1490 if ($type->getName() == $pagetype_override)
1491 $pagetype_override = false; // Not really an override...
1494 if ($pagetype_override) {
1495 // Overriden page type, don't cache (or check cache).
1496 return new TransformedText($this->getPage(),
1497 $this->getPackedContent(),
1498 $this->getMetaData(),
1499 $pagetype_override);
1502 $possibly_cache_results = true;
1504 if (!USECACHE or WIKIDB_NOCACHE_MARKUP) {
1505 if (WIKIDB_NOCACHE_MARKUP == 'purge') {
1506 // flush cache for this page.
1507 $page = $this->getPage();
1508 $page->set('_cached_html', false);
1510 $possibly_cache_results = false;
1512 elseif (!$this->_transformedContent) {
1514 if ($this->isCurrent()) {
1515 $page = $this->getPage();
1516 $this->_transformedContent = TransformedText::unpack($page->get('_cached_html'));
1519 $possibly_cache_results = false;
1521 //$backend->unlock();
1524 if (!$this->_transformedContent) {
1525 $this->_transformedContent
1526 = new TransformedText($this->getPage(),
1527 $this->getPackedContent(),
1528 $this->getMetaData());
1530 if ($possibly_cache_results) {
1531 // If we're still the current version, cache the transfomed page.
1533 if ($this->isCurrent()) {
1534 $page->set('_cached_html', $this->_transformedContent->pack());
1536 //$backend->unlock();
1540 return $this->_transformedContent;
1544 * Get the content as a string.
1548 * @return string The page content.
1549 * Lines are separated by new-lines.
1551 function getPackedContent() {
1552 $data = &$this->_data;
1555 if (empty($data['%content'])) {
1556 include_once('lib/InlineParser.php');
1558 // A feature similar to taglines at http://www.wlug.org.nz/
1559 // Lib from http://www.aasted.org/quote/
1560 if (defined('FORTUNE_DIR')
1561 and is_dir(FORTUNE_DIR)
1562 and in_array($GLOBALS['request']->getArg('action'),
1563 array('create','edit')))
1565 include_once("lib/fortune.php");
1566 $fortune = new Fortune();
1567 $quote = str_replace("\n<br>","\n", $fortune->quoteFromDir(FORTUNE_DIR));
1568 return sprintf("<verbatim>\n%s</verbatim>\n\n"._("Describe %s here."),
1569 $quote, "[" . WikiEscape($this->_pagename) . "]");
1571 // Replace empty content with default value.
1572 return sprintf(_("Describe %s here."),
1573 "[" . WikiEscape($this->_pagename) . "]");
1576 // There is (non-default) content.
1577 assert($this->_version > 0);
1579 if (!is_string($data['%content'])) {
1580 // Content was not provided to us at init time.
1581 // (This is allowed because for some backends, fetching
1582 // the content may be expensive, and often is not wanted
1585 // In any case, now we need to get it.
1586 $data['%content'] = $this->_get_content();
1587 assert(is_string($data['%content']));
1590 return $data['%content'];
1593 function _get_content() {
1594 $cache = &$this->_wikidb->_cache;
1595 $pagename = $this->_pagename;
1596 $version = $this->_version;
1598 assert($version > 0);
1600 $newdata = $cache->get_versiondata($pagename, $version, true);
1602 assert(is_string($newdata['%content']));
1603 return $newdata['%content'];
1606 // else revision has been deleted... What to do?
1607 return __sprintf("Oops! Revision %s of %s seems to have been deleted!",
1608 $version, $pagename);
1613 * Get meta-data for this revision.
1618 * @param string $key Which meta-data to access.
1620 * Some reserved revision meta-data keys are:
1622 * <dt> 'mtime' <dd> Time this revision was created (seconds since midnight Jan 1, 1970.)
1623 * The 'mtime' meta-value is normally set automatically by the database
1624 * backend, but it may be specified explicitly when creating a new revision.
1626 * <dd> To ensure consistency of RecentChanges, the mtimes of the versions
1627 * of a page must be monotonically increasing. If an attempt is
1628 * made to create a new revision with an mtime less than that of
1629 * the preceeding revision, the new revisions timestamp is force
1630 * to be equal to that of the preceeding revision. In that case,
1631 * the originally requested mtime is preserved in 'orig_mtime'.
1632 * <dt> '_supplanted' <dd> Time this revision ceased to be the most recent.
1633 * This meta-value is <em>always</em> automatically maintained by the database
1634 * backend. (It is set from the 'mtime' meta-value of the superceding
1635 * revision.) '_supplanted' has a value of 'false' for the current revision.
1637 * FIXME: this could be refactored:
1639 * <dd> Author of the page (as he should be reported in, e.g. RecentChanges.)
1641 * <dd> Authenticated author of a page. This is used to identify
1642 * the distinctness of authors when cleaning old revisions from
1644 * <dt> 'is_minor_edit' <dd> Set if change was marked as a minor revision by the author.
1645 * <dt> 'summary' <dd> Short change summary entered by page author.
1648 * Meta-data keys must be valid C identifers (they have to start with a letter
1649 * or underscore, and can contain only alphanumerics and underscores.)
1651 * @return string The requested value, or false if the requested value
1654 function get($key) {
1655 if (!$key || $key[0] == '%')
1657 $data = &$this->_data;
1658 return isset($data[$key]) ? $data[$key] : false;
1662 * Get all the revision page meta-data as a hash.
1664 * @return hash The revision meta-data.
1666 function getMetaData() {
1668 foreach ($this->_data as $key => $val) {
1669 if (!empty($val) && $key[0] != '%')
1677 * Return a string representation of the revision.
1679 * This is really only for debugging.
1683 * @return string Printable representation of the WikiDB_Page.
1685 function asString () {
1687 printf("[%s:%d\n", get_class($this), $this->get('version'));
1688 print_r($this->_data);
1689 echo $this->getPackedContent() . "\n]\n";
1690 $strval = ob_get_contents();
1698 * Class representing a sequence of WikiDB_Pages.
1699 * TODO: Enhance to php5 iterators
1701 class WikiDB_PageIterator
1703 function WikiDB_PageIterator(&$wikidb, &$iter, $options=false) {
1704 $this->_iter = $iter; // a WikiDB_backend_iterator
1705 $this->_wikidb = &$wikidb;
1706 $this->_options = $options;
1710 return $this->_iter->count();
1714 * Get next WikiDB_Page in sequence.
1718 * @return WikiDB_Page The next WikiDB_Page in the sequence.
1721 if ( ! ($next = $this->_iter->next()) )
1724 $pagename = &$next['pagename'];
1726 trigger_error('empty pagename in WikiDB_PageIterator::next()', E_USER_WARNING);
1730 // there's always hits, but we cache only if more
1731 // (well not with file, cvs and dba)
1732 if (isset($next['pagedata']) and count($next['pagedata']) > 1) {
1733 $this->_wikidb->_cache->cache_data($next);
1734 // cache existing page id's since we iterate over all links in GleanDescription
1735 // and need them later for LinkExistingWord
1736 } elseif ($this->_options and array_key_exists('include_empty', $this->_options)
1737 and !$this->_options['include_empty'] and isset($next['id'])) {
1738 $this->_wikidb->_cache->_id_cache[$next['pagename']] = $next['id'];
1740 return new WikiDB_Page($this->_wikidb, $pagename);
1744 * Release resources held by this iterator.
1746 * The iterator may not be used after free() is called.
1748 * There is no need to call free(), if next() has returned false.
1749 * (I.e. if you iterate through all the pages in the sequence,
1750 * you do not need to call free() --- you only need to call it
1751 * if you stop before the end of the iterator is reached.)
1756 $this->_iter->free();
1759 function asArray() {
1761 while ($page = $this->next())
1771 * A class which represents a sequence of WikiDB_PageRevisions.
1772 * TODO: Enhance to php5 iterators
1774 class WikiDB_PageRevisionIterator
1776 function WikiDB_PageRevisionIterator(&$wikidb, &$revisions, $options=false) {
1777 $this->_revisions = $revisions;
1778 $this->_wikidb = &$wikidb;
1779 $this->_options = $options;
1783 return $this->_revisions->count();
1787 * Get next WikiDB_PageRevision in sequence.
1791 * @return WikiDB_PageRevision
1792 * The next WikiDB_PageRevision in the sequence.
1795 if ( ! ($next = $this->_revisions->next()) )
1798 $this->_wikidb->_cache->cache_data($next);
1800 $pagename = $next['pagename'];
1801 $version = $next['version'];
1802 $versiondata = $next['versiondata'];
1804 if (!(is_string($pagename) and $pagename != '')) {
1805 trigger_error("empty pagename",E_USER_WARNING);
1808 } else assert(is_string($pagename) and $pagename != '');
1810 if (!is_array($versiondata)) {
1811 trigger_error("empty versiondata",E_USER_WARNING);
1814 } else assert(is_array($versiondata));
1816 if (!($version > 0)) {
1817 trigger_error("invalid version",E_USER_WARNING);
1820 } else assert($version > 0);
1822 return new WikiDB_PageRevision($this->_wikidb, $pagename, $version,
1827 * Release resources held by this iterator.
1829 * The iterator may not be used after free() is called.
1831 * There is no need to call free(), if next() has returned false.
1832 * (I.e. if you iterate through all the revisions in the sequence,
1833 * you do not need to call free() --- you only need to call it
1834 * if you stop before the end of the iterator is reached.)
1839 $this->_revisions->free();
1842 function asArray() {
1844 while ($rev = $this->next())
1853 class WikiDB_Array_PageIterator
1855 function WikiDB_Array_PageIterator(&$pagenames) {
1857 $this->_dbi = $request->getDbh();
1858 $this->_pages = $pagenames;
1859 reset($this->_pages);
1862 $c =& current($this->_pages);
1863 next($this->_pages);
1864 return $c !== false ? $this->_dbi->getPage($c) : false;
1867 return count($this->_pages);
1870 function asArray() {
1871 reset($this->_pages);
1872 return $this->_pages;
1876 class WikiDB_Array_generic_iter
1878 function WikiDB_Array_generic_iter($result) {
1879 // $result may be either an array or a query result
1880 if (is_array($result)) {
1881 $this->_array = $result;
1882 } elseif (is_object($result)) {
1883 $this->_array = $result->asArray();
1885 $this->_array = array();
1887 if (!empty($this->_array))
1888 reset($this->_array);
1891 $c =& current($this->_array);
1892 next($this->_array);
1893 return $c !== false ? $c : false;
1896 return count($this->_array);
1899 function asArray() {
1900 if (!empty($this->_array))
1901 reset($this->_array);
1902 return $this->_array;
1907 * Data cache used by WikiDB.
1909 * FIXME: Maybe rename this to caching_backend (or some such).
1915 // FIXME: beautify versiondata cache. Cache only limited data?
1917 function WikiDB_cache (&$backend) {
1918 $this->_backend = &$backend;
1920 $this->_pagedata_cache = array();
1921 $this->_versiondata_cache = array();
1922 array_push ($this->_versiondata_cache, array());
1923 $this->_glv_cache = array();
1924 $this->_id_cache = array(); // formerly ->_dbi->_iwpcache (nonempty pages => id)
1928 $this->_pagedata_cache = array();
1929 $this->_versiondata_cache = array();
1930 $this->_glv_cache = array();
1931 $this->_id_cache = array();
1934 function get_pagedata($pagename) {
1935 assert(is_string($pagename) && $pagename != '');
1937 $cache = &$this->_pagedata_cache;
1938 if (!isset($cache[$pagename]) || !is_array($cache[$pagename])) {
1939 $cache[$pagename] = $this->_backend->get_pagedata($pagename);
1940 // Never keep a ['%pagedata']['_cached_html'] in cache, other than the current page.
1941 if (isset($cache[$pagename]['_cached_html'])
1942 and $pagename != $GLOBALS['request']->getArg('pagename')) {
1943 unset($cache[$pagename]['_cached_html']);
1945 if (empty($cache[$pagename]))
1946 $cache[$pagename] = array();
1948 return $cache[$pagename];
1950 return $this->_backend->get_pagedata($pagename);
1954 function update_pagedata($pagename, $newdata) {
1955 assert(is_string($pagename) && $pagename != '');
1956 unset ($this->_pagedata_cache[$pagename]);
1958 $this->_backend->update_pagedata($pagename, $newdata);
1960 if (USECACHE and !empty($this->_pagedata_cache[$pagename]) and is_array($this->_pagedata_cache[$pagename])) {
1961 $cachedata = &$this->_pagedata_cache[$pagename];
1962 foreach($newdata as $key => $val)
1963 $cachedata[$key] = $val;
1967 function invalidate_cache($pagename) {
1968 unset ($this->_pagedata_cache[$pagename]);
1969 unset ($this->_versiondata_cache[$pagename]);
1970 unset ($this->_glv_cache[$pagename]);
1971 unset ($this->_id_cache[$pagename]);
1972 //unset ($this->_backend->_page_data);
1975 function delete_page($pagename) {
1976 $this->_backend->delete_page($pagename);
1977 $this->invalidate_cache($pagename);
1981 function cache_data($data) {
1982 if (isset($data['pagedata']))
1983 $this->_pagedata_cache[$data['pagename']] = $data['pagedata'];
1986 function get_versiondata($pagename, $version, $need_content = false) {
1987 // FIXME: Seriously ugly hackage
1988 if (USECACHE) { //temporary - for debugging
1989 assert(is_string($pagename) && $pagename != '');
1990 // there is a bug here somewhere which results in an assertion failure at line 105
1991 // of ArchiveCleaner.php It goes away if we use the next line.
1992 //$need_content = true;
1993 $nc = $need_content ? '1':'0';
1994 $cache = &$this->_versiondata_cache;
1995 if (!isset($cache[$pagename][$version][$nc])||
1996 !(is_array ($cache[$pagename])) || !(is_array ($cache[$pagename][$version]))) {
1997 $cache[$pagename][$version][$nc] =
1998 $this->_backend->get_versiondata($pagename, $version, $need_content);
1999 // If we have retrieved all data, we may as well set the cache for $need_content = false
2001 $cache[$pagename][$version]['0'] =& $cache[$pagename][$version]['1'];
2004 $vdata = $cache[$pagename][$version][$nc];
2006 $vdata = $this->_backend->get_versiondata($pagename, $version, $need_content);
2009 // Rationale: never keep ['%pagedata']['_cached_html'] in cache.
2010 if ($vdata && !empty($vdata['%pagedata'])) {
2011 $this->_pagedata_cache[$pagename] =& $vdata['%pagedata'];
2012 // only store _cached_html for the requested page
2014 and isset($vdata['%pagedata']['_cached_html'])
2015 and $pagename != $GLOBALS['request']->getArg('pagename'))
2017 unset($this->_pagedata_cache[$pagename]['_cached_html']);
2018 unset($cache[$pagename][$version][$nc]['%pagedata']['_cached_html']);
2020 unset($cache[$pagename][$version][0]['%pagedata']['_cached_html']);
2026 function set_versiondata($pagename, $version, $data) {
2027 //unset($this->_versiondata_cache[$pagename][$version]);
2029 $new = $this->_backend->set_versiondata($pagename, $version, $data);
2031 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2032 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2033 // Is this necessary?
2034 unset($this->_glv_cache[$pagename]);
2037 function update_versiondata($pagename, $version, $data) {
2038 $new = $this->_backend->update_versiondata($pagename, $version, $data);
2040 // FIXME: never keep ['%pagedata']['_cached_html'] in cache.
2041 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2043 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2044 // Is this necessary?
2045 unset($this->_glv_cache[$pagename]);
2048 function delete_versiondata($pagename, $version) {
2049 $new = $this->_backend->delete_versiondata($pagename, $version);
2050 if (isset($this->_versiondata_cache[$pagename][$version]['1']))
2051 unset ($this->_versiondata_cache[$pagename][$version]['1']);
2052 if (isset($this->_versiondata_cache[$pagename][$version]['0']))
2053 unset ($this->_versiondata_cache[$pagename][$version]['0']);
2054 if (isset($this->_glv_cache[$pagename]))
2055 unset ($this->_glv_cache[$pagename]);
2058 function get_latest_version($pagename) {
2060 assert (is_string($pagename) && $pagename != '');
2061 $cache = &$this->_glv_cache;
2062 if (!isset($cache[$pagename])) {
2063 $cache[$pagename] = $this->_backend->get_latest_version($pagename);
2064 if (empty($cache[$pagename]))
2065 $cache[$pagename] = 0;
2067 return $cache[$pagename];
2069 return $this->_backend->get_latest_version($pagename);
2074 function _sql_debuglog($msg, $newline=true, $shutdown=false) {
2078 $stamp = strftime("%y%m%d-%H%M%S");
2079 $fp = fopen("/tmp/sql-$stamp.log", "a");
2080 register_shutdown_function("_sql_debuglog_shutdown_function");
2081 } elseif ($shutdown) {
2085 if ($newline) fputs($fp, "[$i++] $msg");
2086 else fwrite($fp, $msg);
2088 function _sql_debuglog_shutdown_function() {
2089 _sql_debuglog('',false,true);
2092 // $Log: not supported by cvs2svn $
2093 // Revision 1.105 2004/11/20 09:16:27 rurban
2094 // Fix bad-style Cut&Paste programming errors, detected by Charles Corrigan.
2096 // Revision 1.104 2004/11/19 19:22:03 rurban
2097 // ModeratePage part1: change status
2099 // Revision 1.103 2004/11/16 17:29:04 rurban
2100 // fix remove notification error
2101 // fix creation + update id_cache update
2103 // Revision 1.102 2004/11/11 18:31:26 rurban
2104 // add simple backtrace on such general failures to get at least an idea where
2106 // Revision 1.101 2004/11/10 19:32:22 rurban
2107 // * optimize increaseHitCount, esp. for mysql.
2108 // * prepend dirs to the include_path (phpwiki_dir for faster searches)
2109 // * Pear_DB version logic (awful but needed)
2110 // * fix broken ADODB quote
2111 // * _extract_page_data simplification
2113 // Revision 1.100 2004/11/10 15:29:20 rurban
2114 // * requires newer Pear_DB (as the internal one): quote() uses now escapeSimple for strings
2115 // * ACCESS_LOG_SQL: fix cause request not yet initialized
2116 // * WikiDB: moved SQL specific methods upwards
2117 // * new Pear_DB quoting: same as ADODB and as newer Pear_DB.
2118 // fixes all around: WikiGroup, WikiUserNew SQL methods, SQL logging
2120 // Revision 1.99 2004/11/09 17:11:05 rurban
2121 // * revert to the wikidb ref passing. there's no memory abuse there.
2122 // * use new wikidb->_cache->_id_cache[] instead of wikidb->_iwpcache, to effectively
2123 // store page ids with getPageLinks (GleanDescription) of all existing pages, which
2124 // are also needed at the rendering for linkExistingWikiWord().
2125 // pass options to pageiterator.
2126 // use this cache also for _get_pageid()
2127 // This saves about 8 SELECT count per page (num all pagelinks).
2128 // * fix passing of all page fields to the pageiterator.
2129 // * fix overlarge session data which got broken with the latest ACCESS_LOG_SQL changes
2131 // Revision 1.98 2004/11/07 18:34:29 rurban
2132 // more logging fixes
2134 // Revision 1.97 2004/11/07 16:02:51 rurban
2135 // new sql access log (for spam prevention), and restructured access log class
2136 // dbh->quote (generic)
2137 // pear_db: mysql specific parts seperated (using replace)
2139 // Revision 1.96 2004/11/05 22:32:15 rurban
2140 // encode the subject to be 7-bit safe
2142 // Revision 1.95 2004/11/05 20:53:35 rurban
2143 // login cleanup: better debug msg on failing login,
2144 // checked password less immediate login (bogo or anon),
2145 // checked olduser pref session error,
2146 // better PersonalPage without password warning on minimal password length=0
2147 // (which is default now)
2149 // Revision 1.94 2004/11/01 10:43:56 rurban
2150 // seperate PassUser methods into seperate dir (memory usage)
2151 // fix WikiUser (old) overlarge data session
2152 // remove wikidb arg from various page class methods, use global ->_dbi instead
2155 // Revision 1.93 2004/10/14 17:17:57 rurban
2156 // remove dbi WikiDB_Page param: use global request object instead. (memory)
2157 // allow most_popular sortby arguments
2159 // Revision 1.92 2004/10/05 17:00:04 rurban
2160 // support paging for simple lists
2161 // fix RatingDb sql backend.
2162 // remove pages from AllPages (this is ListPages then)
2164 // Revision 1.91 2004/10/04 23:41:19 rurban
2165 // delete notify: fix, @unset syntax error
2167 // Revision 1.90 2004/09/28 12:50:22 rurban
2168 // https://sourceforge.net/forum/forum.php?thread_id=1150924&forum_id=18929
2170 // Revision 1.89 2004/09/26 10:54:42 rurban
2171 // silence deferred check
2173 // Revision 1.88 2004/09/25 18:16:40 rurban
2174 // unset more unneeded _cached_html. (Guess this should fix sf.net now)
2176 // Revision 1.87 2004/09/25 16:25:40 rurban
2177 // notify on rename and remove (to be improved)
2179 // Revision 1.86 2004/09/23 18:52:06 rurban
2180 // only fortune at create
2182 // Revision 1.85 2004/09/16 08:00:51 rurban
2183 // just some comments
2185 // Revision 1.84 2004/09/14 10:34:30 rurban
2186 // fix TransformedText call to use refs
2188 // Revision 1.83 2004/09/08 13:38:00 rurban
2189 // improve loadfile stability by using markup=2 as default for undefined markup-style.
2190 // use more refs for huge objects.
2191 // fix debug=static issue in WikiPluginCached
2193 // Revision 1.82 2004/09/06 12:08:49 rurban
2194 // memory_limit on unix workaround
2195 // VisualWiki: default autosize image
2197 // Revision 1.81 2004/09/06 08:28:00 rurban
2198 // rename genericQuery to genericSqlQuery
2200 // Revision 1.80 2004/07/09 13:05:34 rurban
2203 // Revision 1.79 2004/07/09 10:06:49 rurban
2204 // Use backend specific sortby and sortable_columns method, to be able to
2205 // select between native (Db backend) and custom (PageList) sorting.
2206 // Fixed PageList::AddPageList (missed the first)
2207 // Added the author/creator.. name to AllPagesBy...
2208 // display no pages if none matched.
2209 // Improved dba and file sortby().
2210 // Use &$request reference
2212 // Revision 1.78 2004/07/08 21:32:35 rurban
2213 // Prevent from more warnings, minor db and sort optimizations
2215 // Revision 1.77 2004/07/08 19:04:42 rurban
2216 // more unittest fixes (file backend, metadata RatingsDb)
2218 // Revision 1.76 2004/07/08 17:31:43 rurban
2219 // improve numPages for file (fixing AllPagesTest)
2221 // Revision 1.75 2004/07/05 13:56:22 rurban
2222 // sqlite autoincrement fix
2224 // Revision 1.74 2004/07/03 16:51:05 rurban
2225 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
2226 // added atomic mysql REPLACE for PearDB as in ADODB
2227 // fixed _lock_tables typo links => link
2228 // fixes unserialize ADODB bug in line 180
2230 // Revision 1.73 2004/06/29 08:52:22 rurban
2231 // Use ...version() $need_content argument in WikiDB also:
2232 // To reduce the memory footprint for larger sets of pagelists,
2233 // we don't cache the content (only true or false) and
2234 // we purge the pagedata (_cached_html) also.
2235 // _cached_html is only cached for the current pagename.
2236 // => Vastly improved page existance check, ACL check, ...
2238 // Now only PagedList info=content or size needs the whole content, esp. if sortable.
2240 // Revision 1.72 2004/06/25 14:15:08 rurban
2241 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
2243 // Revision 1.71 2004/06/21 16:22:30 rurban
2244 // add DEFAULT_DUMP_DIR and HTML_DUMP_DIR constants, for easier cmdline dumps,
2245 // fixed dumping buttons locally (images/buttons/),
2246 // support pages arg for dumphtml,
2247 // optional directory arg for dumpserial + dumphtml,
2248 // fix a AllPages warning,
2249 // show dump warnings/errors on DEBUG,
2250 // don't warn just ignore on wikilens pagelist columns, if not loaded.
2251 // RateIt pagelist column is called "rating", not "ratingwidget" (Dan?)
2253 // Revision 1.70 2004/06/18 14:39:31 rurban
2254 // actually check USECACHE
2256 // Revision 1.69 2004/06/13 15:33:20 rurban
2257 // new support for arguments owner, author, creator in most relevant
2258 // PageList plugins. in WikiAdmin* via preSelectS()
2260 // Revision 1.68 2004/06/08 21:03:20 rurban
2261 // updated RssParser for XmlParser quirks (store parser object params in globals)
2263 // Revision 1.67 2004/06/07 19:12:49 rurban
2264 // fixed rename version=0, bug #966284
2266 // Revision 1.66 2004/06/07 18:57:27 rurban
2267 // fix rename: Change pagename in all linked pages
2269 // Revision 1.65 2004/06/04 20:32:53 rurban
2270 // Several locale related improvements suggested by Pierrick Meignen
2271 // LDAP fix by John Cole
2272 // reanable admin check without ENABLE_PAGEPERM in the admin plugins
2274 // Revision 1.64 2004/06/04 16:50:00 rurban
2275 // add random quotes to empty pages
2277 // Revision 1.63 2004/06/04 11:58:38 rurban
2278 // added USE_TAGLINES
2280 // Revision 1.62 2004/06/03 22:24:41 rurban
2281 // reenable admin check on !ENABLE_PAGEPERM, honor s=Wildcard arg, fix warning after Remove
2283 // Revision 1.61 2004/06/02 17:13:48 rurban
2284 // fix getRevisionBefore assertion
2286 // Revision 1.60 2004/05/28 10:09:58 rurban
2287 // fix bug #962117, incorrect init of auth_dsn
2289 // Revision 1.59 2004/05/27 17:49:05 rurban
2290 // renamed DB_Session to DbSession (in CVS also)
2291 // added WikiDB->getParam and WikiDB->getAuthParam method to get rid of globals
2292 // remove leading slash in error message
2293 // added force_unlock parameter to File_Passwd (no return on stale locks)
2294 // fixed adodb session AffectedRows
2295 // added FileFinder helpers to unify local filenames and DATA_PATH names
2296 // editpage.php: new edit toolbar javascript on ENABLE_EDIT_TOOLBAR
2298 // Revision 1.58 2004/05/18 13:59:14 rurban
2299 // rename simpleQuery to genericQuery
2301 // Revision 1.57 2004/05/16 22:07:35 rurban
2302 // check more config-default and predefined constants
2303 // various PagePerm fixes:
2304 // fix default PagePerms, esp. edit and view for Bogo and Password users
2305 // implemented Creator and Owner
2306 // BOGOUSERS renamed to BOGOUSER
2307 // fixed syntax errors in signin.tmpl
2309 // Revision 1.56 2004/05/15 22:54:49 rurban
2310 // fixed important WikiDB bug with DEBUG > 0: wrong assertion
2311 // improved SetAcl (works) and PagePerms, some WikiGroup helpers.
2313 // Revision 1.55 2004/05/12 19:27:47 rurban
2314 // revert wrong inline optimization.
2316 // Revision 1.54 2004/05/12 10:49:55 rurban
2317 // require_once fix for those libs which are loaded before FileFinder and
2318 // its automatic include_path fix, and where require_once doesn't grok
2319 // dirname(__FILE__) != './lib'
2320 // upgrade fix with PearDB
2321 // navbar.tmpl: remove spaces for IE button alignment
2323 // Revision 1.53 2004/05/08 14:06:12 rurban
2324 // new support for inlined image attributes: [image.jpg size=50x30 align=right]
2325 // minor stability and portability fixes
2327 // Revision 1.52 2004/05/06 19:26:16 rurban
2328 // improve stability, trying to find the InlineParser endless loop on sf.net
2330 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
2332 // Revision 1.51 2004/05/06 17:30:37 rurban
2333 // CategoryGroup: oops, dos2unix eol
2334 // improved phpwiki_version:
2335 // pre -= .0001 (1.3.10pre: 1030.099)
2336 // -p1 += .001 (1.3.9-p1: 1030.091)
2337 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
2338 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
2339 // backend->backendType(), backend->database(),
2340 // backend->listOfFields(),
2341 // backend->listOfTables(),
2343 // Revision 1.50 2004/05/04 22:34:25 rurban
2346 // Revision 1.49 2004/05/03 11:16:40 rurban
2347 // fixed sendPageChangeNotification
2348 // subject rewording
2350 // Revision 1.48 2004/04/29 23:03:54 rurban
2351 // fixed sf.net bug #940996
2353 // Revision 1.47 2004/04/29 19:39:44 rurban
2354 // special support for formatted plugins (one-liners)
2355 // like <small><plugin BlaBla ></small>
2356 // iter->asArray() helper for PopularNearby
2357 // db_session for older php's (no &func() allowed)
2359 // Revision 1.46 2004/04/26 20:44:34 rurban
2360 // locking table specific for better databases
2362 // Revision 1.45 2004/04/20 00:06:03 rurban
2363 // themable paging support
2365 // Revision 1.44 2004/04/19 18:27:45 rurban
2366 // Prevent from some PHP5 warnings (ref args, no :: object init)
2367 // php5 runs now through, just one wrong XmlElement object init missing
2368 // Removed unneccesary UpgradeUser lines
2369 // Changed WikiLink to omit version if current (RecentChanges)
2371 // Revision 1.43 2004/04/18 01:34:20 rurban
2372 // protect most_popular from sortby=mtime
2374 // Revision 1.42 2004/04/18 01:11:51 rurban
2375 // more numeric pagename fixes.
2376 // fixed action=upload with merge conflict warnings.
2377 // charset changed from constant to global (dynamic utf-8 switching)
2383 // c-basic-offset: 4
2384 // c-hanging-comment-ender-p: nil
2385 // indent-tabs-mode: nil