2 rcs_id('$Id: WikiDB.php,v 1.98 2004-11-07 18:34:29 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>
19 * Force the creation of a new revision.
20 * @see WikiDB_Page::createRevision()
22 define('WIKIDB_FORCE_CREATE', -1);
24 // FIXME: used for debugging only. Comment out if cache does not work
26 if (!defined('USECACHE'))
27 define('USECACHE', 1);
28 // low memory setup (sf.net):
29 // no page cache, no output buffering.
30 if (!USECACHE and !defined('WIKIDB_NOCACHE_MARKUP'))
31 define('WIKIDB_NOCACHE_MARKUP', 1);
34 * Abstract base class for the database used by PhpWiki.
36 * A <tt>WikiDB</tt> is a container for <tt>WikiDB_Page</tt>s which in
37 * turn contain <tt>WikiDB_PageRevision</tt>s.
39 * Conceptually a <tt>WikiDB</tt> contains all possible
40 * <tt>WikiDB_Page</tt>s, whether they have been initialized or not.
41 * Since all possible pages are already contained in a WikiDB, a call
42 * to WikiDB::getPage() will never fail (barring bugs and
43 * e.g. filesystem or SQL database problems.)
45 * Also each <tt>WikiDB_Page</tt> always contains at least one
46 * <tt>WikiDB_PageRevision</tt>: the default content (e.g. "Describe
47 * [PageName] here."). This default content has a version number of
50 * <tt>WikiDB_PageRevision</tt>s have read-only semantics. One can
51 * only create new revisions or delete old ones --- one can not modify
52 * an existing revision.
56 * Open a WikiDB database.
58 * This is a static member function. This function inspects its
59 * arguments to determine the proper subclass of WikiDB to
60 * instantiate, and then it instantiates it.
64 * @param hash $dbparams Database configuration parameters.
65 * Some pertinent paramters are:
68 * <dd> The back-end type. Current supported types are:
71 * <dd> Generic SQL backend based on the PEAR/DB database abstraction
72 * library. (More stable and conservative)
74 * <dd> Another generic SQL backend. (More current features are tested here. Much faster)
76 * <dd> Dba based backend. The default and by far the fastest.
84 * <dd> (Used by the SQL and ADODB backends.)
85 * The DSN specifying which database to connect to.
88 * <dd> Prefix to be prepended to database tables (and file names).
91 * <dd> (Used by the dba backend.)
92 * Which directory db files reside in.
95 * <dd> Used only by the dba backend so far.
96 * And: When optimizing mysql it closes timed out mysql processes.
97 * otherwise only used for dba: Timeout in seconds for opening (and
98 * obtaining lock) on the dbm file.
101 * <dd> (Used by the dba backend.)
103 * Which dba handler to use. Good choices are probably either
107 * @return WikiDB A WikiDB object.
109 function open ($dbparams) {
110 $dbtype = $dbparams{'dbtype'};
111 include_once("lib/WikiDB/$dbtype.php");
113 $class = 'WikiDB_' . $dbtype;
114 return new $class ($dbparams);
124 function WikiDB (&$backend, $dbparams) {
125 $this->_backend = &$backend;
126 // don't do the following with the auth_dsn!
127 if (isset($dbparams['auth_dsn'])) return;
129 $this->_cache = new WikiDB_cache($backend);
130 // If the database doesn't yet have a timestamp, initialize it now.
131 $GLOBALS['request']->_dbi = $this;
132 if ($this->get('_timestamp') === false)
135 //FIXME: devel checking.
136 //$this->_backend->check();
140 * Get any user-level warnings about this WikiDB.
142 * Some back-ends, e.g. by default create there data files in the
143 * global /tmp directory. We would like to warn the user when this
144 * happens (since /tmp files tend to get wiped periodically.)
145 * Warnings such as these may be communicated from specific
146 * back-ends through this method.
150 * @return string A warning message (or <tt>false</tt> if there is
153 function genericWarnings() {
158 * Close database connection.
160 * The database may no longer be used after it is closed.
162 * Closing a WikiDB invalidates all <tt>WikiDB_Page</tt>s,
163 * <tt>WikiDB_PageRevision</tt>s and <tt>WikiDB_PageIterator</tt>s
164 * which have been obtained from it.
169 $this->_backend->close();
170 $this->_cache->close();
174 * Get a WikiDB_Page from a WikiDB.
176 * A {@link WikiDB} consists of the (infinite) set of all possible pages,
177 * therefore this method never fails.
180 * @param string $pagename Which page to get.
181 * @return WikiDB_Page The requested WikiDB_Page.
183 function getPage($pagename) {
184 static $error_displayed = false;
185 $pagename = (string) $pagename;
187 if ($pagename === '') {
188 if ($error_displayed) return false;
189 $error_displayed = true;
190 if (function_exists("xdebug_get_function_stack"))
191 var_dump(xdebug_get_function_stack());
192 trigger_error("empty pagename",E_USER_WARNING);
196 assert($pagename != '');
198 return new WikiDB_Page(/*$this,*/ $pagename);
202 * Determine whether page exists (in non-default form).
205 * $is_page = $dbi->isWikiPage($pagename);
209 * $page = $dbi->getPage($pagename);
210 * $current = $page->getCurrentRevision();
211 * $is_page = ! $current->hasDefaultContents();
213 * however isWikiPage may be implemented in a more efficient
214 * manner in certain back-ends.
218 * @param string $pagename string Which page to check.
220 * @return boolean True if the page actually exists with
221 * non-default contents in the WikiDataBase.
223 function isWikiPage ($pagename) {
224 $page = $this->getPage($pagename);
225 return $page->exists();
229 * Delete page from the WikiDB.
231 * Deletes all revisions of the page from the WikiDB. Also resets
232 * all page meta-data to the default values.
236 * @param string $pagename Name of page to delete.
238 function deletePage($pagename) {
239 $this->_cache->delete_page($pagename);
241 /* Generate notification emails? */
242 if (! $this->isWikiPage($pagename) ) {
243 $notify = $this->get('notify');
244 if (!empty($notify) and is_array($notify)) {
245 //TODO: deferr it (quite a massive load if you remove some pages).
246 //TODO: notification class which catches all changes,
247 // and decides at the end of the request what to mail. (type, page, who, what, users, emails)
248 // could be used for PageModeration also.
249 $page = new WikiDB_Page($pagename);
250 list($emails, $userids) = $page->getPageChangeEmails($notify);
251 if (!empty($emails)) {
252 $editedby = sprintf(_("Edited by: %s"), $GLOBALS['request']->_user->getId()); // Todo: host_id
253 $emails = join(',', $emails);
254 $subject = sprintf(_("Page deleted %s"), urlencode($pagename));
255 if (mail($emails,"[".WIKI_NAME."] ".$subject,
258 "Deleted $pagename"))
259 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
260 $pagename, join(',',$userids)), E_USER_NOTICE);
262 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
263 $pagename, join(',',$userids)), E_USER_WARNING);
268 //How to create a RecentChanges entry with explaining summary?
270 $page = $this->getPage($pagename);
271 $current = $page->getCurrentRevision();
272 $meta = $current->_data;
273 $version = $current->getVersion();
274 $meta['summary'] = _("removed");
275 $page->save($current->getPackedContent(), $version + 1, $meta);
280 * Retrieve all pages.
282 * Gets the set of all pages with non-default contents.
286 * @param boolean $include_defaulted Normally pages whose most
287 * recent revision has empty content are considered to be
288 * non-existant. Unless $include_defaulted is set to true, those
289 * pages will not be returned.
291 * @return WikiDB_PageIterator A WikiDB_PageIterator which contains all pages
292 * in the WikiDB which have non-default contents.
294 function getAllPages($include_empty=false, $sortby=false, $limit=false) {
295 // HACK: memory_limit=8M will fail on too large pagesets. old php on unix only!
296 $mem = ini_get("memory_limit");
297 if (ini_get("memory_limit") and !$limit and !isWindows() and !check_php_version(4,3)) {
299 $GLOBALS['request']->setArg('limit',$limit);
300 $GLOBALS['request']->setArg('paging','auto');
302 $result = $this->_backend->get_all_pages($include_empty, $sortby, $limit);
303 return new WikiDB_PageIterator(/*$this,*/ $result);
307 //function nPages() {
310 * Yes, for paging. Renamed.
312 * filter = true: include also empty pages
313 * exclude: comma-seperated list pagenames
315 function numPages($filter=false, $exclude='') {
316 if (method_exists($this->_backend, 'numPages'))
317 // FIXME: currently are all args ignored.
318 $count = $this->_backend->numPages($filter, $exclude);
320 // FIXME: exclude ignored.
321 $iter = $this->getAllPages($filter);
322 $count = $iter->count();
331 * Search for pages containing (or not containing) certain words
334 * Pages are returned in alphabetical order whenever it is
335 * practical to do so.
337 * FIXME: should titleSearch and fullSearch be combined? I think so.
340 * @param TextSearchQuery $search A TextSearchQuery object
341 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
342 * @see TextSearchQuery
344 function titleSearch($search) {
345 $result = $this->_backend->text_search($search);
346 return new WikiDB_PageIterator(/*$this,*/ $result);
352 * Search for pages containing (or not containing) certain words
353 * in their entire text (this includes the page content and the
356 * Pages are returned in alphabetical order whenever it is
357 * practical to do so.
361 * @param TextSearchQuery $search A TextSearchQuery object.
362 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching pages.
363 * @see TextSearchQuery
365 function fullSearch($search) {
366 $result = $this->_backend->text_search($search, 'full_text');
367 return new WikiDB_PageIterator(/*$this,*/ $result);
371 * Find the pages with the greatest hit counts.
373 * Pages are returned in reverse order by hit count.
377 * @param integer $limit The maximum number of pages to return.
378 * Set $limit to zero to return all pages. If $limit < 0, pages will
379 * be sorted in decreasing order of popularity.
381 * @return WikiDB_PageIterator A WikiDB_PageIterator containing the matching
384 function mostPopular($limit = 20, $sortby = '-hits') {
385 $result = $this->_backend->most_popular($limit, $sortby);
386 return new WikiDB_PageIterator(/*$this,*/ $result);
390 * Find recent page revisions.
392 * Revisions are returned in reverse order by creation time.
396 * @param hash $params This hash is used to specify various optional
400 * <dd> (integer) At most this many revisions will be returned.
402 * <dd> (integer) Only revisions since this time (unix-timestamp) will be returned.
403 * <dt> include_minor_revisions
404 * <dd> (boolean) Also include minor revisions. (Default is not to.)
405 * <dt> exclude_major_revisions
406 * <dd> (boolean) Don't include non-minor revisions.
407 * (Exclude_major_revisions implies include_minor_revisions.)
408 * <dt> include_all_revisions
409 * <dd> (boolean) Return all matching revisions for each page.
410 * Normally only the most recent matching revision is returned
414 * @return WikiDB_PageRevisionIterator A WikiDB_PageRevisionIterator containing the
415 * matching revisions.
417 function mostRecent($params = false) {
418 $result = $this->_backend->most_recent($params);
419 return new WikiDB_PageRevisionIterator(/*$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');
559 $data = $gd->get('__global');
566 $data[$key] = $newval;
568 $gd->set('__global', $data);
571 // SQL result: for simple select or create/update queries
572 // returns the database specific resource type
573 function genericSqlQuery($sql) {
574 if ($this->getParam('dbtype') == 'SQL') {
575 $result = $this->_backend->_dbh->query($sql);
576 if (DB::isError($result)) {
577 $msg = $result->getMessage();
578 trigger_error("SQL Error: ".DB::errorMessage($result), E_USER_WARNING);
583 } elseif ($this->getParam('dbtype') == 'ADODB') {
584 if (!($result = $this->_backend->_dbh->Execute($sql))) {
585 trigger_error("SQL Error: ".$this->_backend->_dbh->ErrorMsg(), E_USER_WARNING);
591 trigger_error("no SQL database");
596 function quote ($s) {
597 if ($this->getParam('dbtype') == 'SQL')
598 return $this->_backend->_dbh->quoteString($s);
599 elseif ($this->getParam('dbtype') == 'ADODB')
600 return $this->_backend->_dbh->qstr($s);
606 if (!$request->_dbi) return false;
607 if ($this->getParam('dbtype') == 'SQL')
608 return is_resource($this->_backend->connection());
609 elseif ($this->getParam('dbtype') == 'ADODB')
610 return is_resource($this->_backend->connection());
614 // SQL iter: for simple select or create/update queries
615 // returns the generic iterator object (count,next)
616 function genericSqlIter($sql) {
617 if ($this->getParam('dbtype') == 'ADODB') {
618 $result = $this->genericSqlQuery($sql);
619 return new WikiDB_backend_ADODB_generic_iter($this->_backend, $result);
620 } elseif ($this->getParam('dbtype') == 'SQL') {
621 $result = $this->genericSqlQuery($sql);
622 return new WikiDB_backend_PearDB_generic_iter($this->_backend, $result);
624 trigger_error("no SQL database");
628 function getParam($param) {
630 if (isset($DBParams[$param])) return $DBParams[$param];
631 elseif ($param == 'prefix') return '';
635 function getAuthParam($param) {
636 global $DBAuthParams;
637 if (isset($DBAuthParams[$param])) return $DBAuthParams[$param];
638 elseif ($param == 'USER_AUTH_ORDER') return $GLOBALS['USER_AUTH_ORDER'];
639 elseif ($param == 'USER_AUTH_POLICY') return $GLOBALS['USER_AUTH_POLICY'];
646 * An abstract base class which representing a wiki-page within a
649 * A WikiDB_Page contains a number (at least one) of
650 * WikiDB_PageRevisions.
654 function WikiDB_Page(/*&$wikidb,*/ $pagename) {
655 //$this->_wikidb = &$wikidb;
656 $this->_pagename = $pagename;
658 if (!(is_string($pagename) and $pagename != '')) {
659 if (function_exists("xdebug_get_function_stack")) {
660 echo "xdebug_get_function_stack(): "; var_dump(xdebug_get_function_stack());
663 trigger_error("empty pagename", E_USER_WARNING);
667 assert(is_string($pagename) and $pagename != '');
671 * Get the name of the wiki page.
675 * @return string The page name.
678 return $this->_pagename;
681 // To reduce the memory footprint for larger sets of pagelists,
682 // we don't cache the content (only true or false) and
683 // we purge the pagedata (_cached_html) also
685 $current = $this->getCurrentRevision(false);
686 unset($GLOBALS['request']->_dbi->_cache->_pagedata_cache[$this->_pagename]);
687 $exists = ! $current->hasDefaultContents();
688 unset($current->_data->{'%pagedata'});
693 * Delete an old revision of a WikiDB_Page.
695 * Deletes the specified revision of the page.
696 * It is a fatal error to attempt to delete the current revision.
700 * @param integer $version Which revision to delete. (You can also
701 * use a WikiDB_PageRevision object here.)
703 function deleteRevision($version) {
704 $backend = &$GLOBALS['request']->_dbi->_backend;
705 $cache = &$GLOBALS['request']->_dbi->_cache;
706 $pagename = &$this->_pagename;
708 $version = $this->_coerce_to_version($version);
712 $backend->lock(array('page','version'));
713 $latestversion = $cache->get_latest_version($pagename);
714 if ($latestversion && $version == $latestversion) {
715 $backend->unlock(array('page','version'));
716 trigger_error(sprintf("Attempt to delete most recent revision of '%s'",
717 $pagename), E_USER_ERROR);
721 $cache->delete_versiondata($pagename, $version);
722 $backend->unlock(array('page','version'));
726 * Delete a revision, or possibly merge it with a previous
730 * Suppose an author make a (major) edit to a page. Shortly
731 * after that the same author makes a minor edit (e.g. to fix
732 * spelling mistakes he just made.)
734 * Now some time later, where cleaning out old saved revisions,
735 * and would like to delete his minor revision (since there's
736 * really no point in keeping minor revisions around for a long
739 * Note that the text after the minor revision probably represents
740 * what the author intended to write better than the text after
741 * the preceding major edit.
743 * So what we really want to do is merge the minor edit with the
746 * We will only do this when:
748 * <li>The revision being deleted is a minor one, and
749 * <li>It has the same author as the immediately preceding revision.
752 function mergeRevision($version) {
753 $backend = &$GLOBALS['request']->_dbi->_backend;
754 $cache = &$GLOBALS['request']->_dbi->_cache;
755 $pagename = &$this->_pagename;
757 $version = $this->_coerce_to_version($version);
761 $backend->lock(array('version'));
762 $latestversion = $backend->get_latest_version($pagename);
763 if ($latestversion && $version == $latestversion) {
764 $backend->unlock(array('version'));
765 trigger_error(sprintf("Attempt to merge most recent revision of '%s'",
766 $pagename), E_USER_ERROR);
770 $versiondata = $cache->get_versiondata($pagename, $version, true);
772 // Not there? ... we're done!
773 $backend->unlock(array('version'));
777 if ($versiondata['is_minor_edit']) {
778 $previous = $backend->get_previous_version($pagename, $version);
780 $prevdata = $cache->get_versiondata($pagename, $previous);
781 if ($prevdata['author_id'] == $versiondata['author_id']) {
782 // This is a minor revision, previous version is
783 // by the same author. We will merge the
785 $cache->update_versiondata($pagename, $previous,
786 array('%content' => $versiondata['%content'],
787 '_supplanted' => $versiondata['_supplanted']));
792 $cache->delete_versiondata($pagename, $version);
793 $backend->unlock(array('version'));
798 * Create a new revision of a {@link WikiDB_Page}.
802 * @param int $version Version number for new revision.
803 * To ensure proper serialization of edits, $version must be
804 * exactly one higher than the current latest version.
805 * (You can defeat this check by setting $version to
806 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
808 * @param string $content Contents of new revision.
810 * @param hash $metadata Metadata for new revision.
811 * All values in the hash should be scalars (strings or integers).
813 * @param array $links List of pagenames which this page links to.
815 * @return WikiDB_PageRevision Returns the new WikiDB_PageRevision object. If
816 * $version was incorrect, returns false
818 function createRevision($version, $content, $metadata, $links) {
819 $backend = &$GLOBALS['request']->_dbi->_backend;
820 $cache = &$GLOBALS['request']->_dbi->_cache;
821 $pagename = &$this->_pagename;
823 $backend->lock(array('version','page','recent','link','nonempty'));
825 $latestversion = $backend->get_latest_version($pagename);
826 $newversion = $latestversion + 1;
827 assert($newversion >= 1);
829 if ($version != WIKIDB_FORCE_CREATE && $version != $newversion) {
830 $backend->unlock(array('version','page','recent','link','nonempty'));
836 foreach ($data as $key => $val) {
837 if (empty($val) || $key[0] == '_' || $key[0] == '%')
841 assert(!empty($data['author']));
842 if (empty($data['author_id']))
843 @$data['author_id'] = $data['author'];
845 if (empty($data['mtime']))
846 $data['mtime'] = time();
848 if ($latestversion) {
849 // Ensure mtimes are monotonic.
850 $pdata = $cache->get_versiondata($pagename, $latestversion);
851 if ($data['mtime'] < $pdata['mtime']) {
852 trigger_error(sprintf(_("%s: Date of new revision is %s"),
853 $pagename,"'non-monotonic'"),
855 $data['orig_mtime'] = $data['mtime'];
856 $data['mtime'] = $pdata['mtime'];
859 // FIXME: use (possibly user specified) 'mtime' time or
861 $cache->update_versiondata($pagename, $latestversion,
862 array('_supplanted' => $data['mtime']));
865 $data['%content'] = &$content;
867 $cache->set_versiondata($pagename, $newversion, $data);
869 //$cache->update_pagedata($pagename, array(':latestversion' => $newversion,
870 //':deleted' => empty($content)));
872 $backend->set_links($pagename, $links);
874 $backend->unlock(array('version','page','recent','link','nonempty'));
876 return new WikiDB_PageRevision(/*$GLOBALS['request']->_dbi,*/
877 $pagename, $newversion, $data);
880 /** A higher-level interface to createRevision.
882 * This takes care of computing the links, and storing
883 * a cached version of the transformed wiki-text.
885 * @param string $wikitext The page content.
887 * @param int $version Version number for new revision.
888 * To ensure proper serialization of edits, $version must be
889 * exactly one higher than the current latest version.
890 * (You can defeat this check by setting $version to
891 * {@link WIKIDB_FORCE_CREATE} --- not usually recommended.)
893 * @param hash $meta Meta-data for new revision.
895 function save($wikitext, $version, $meta) {
896 $formatted = new TransformedText($this, $wikitext, $meta);
897 $type = $formatted->getType();
898 $meta['pagetype'] = $type->getName();
899 $links = $formatted->getWikiPageLinks();
901 $backend = &$GLOBALS['request']->_dbi->_backend;
902 $newrevision = $this->createRevision($version, $wikitext, $meta, $links);
904 if (!defined('WIKIDB_NOCACHE_MARKUP') or !WIKIDB_NOCACHE_MARKUP)
905 $this->set('_cached_html', $formatted->pack());
907 // FIXME: probably should have some global state information
908 // in the backend to control when to optimize.
910 // We're doing this here rather than in createRevision because
911 // postgres can't optimize while locked.
912 if (DEBUG or (time() % 50 == 0)) {
913 if ($backend->optimize())
914 trigger_error(_("Optimizing database"), E_USER_NOTICE);
917 /* Generate notification emails? */
918 if (isa($newrevision, 'WikiDB_PageRevision')) {
919 // Save didn't fail because of concurrent updates.
920 $notify = $GLOBALS['request']->_dbi->get('notify');
921 if (!empty($notify) and is_array($notify)) {
922 list($emails, $userids) = $this->getPageChangeEmails($notify);
923 if (!empty($emails)) {
924 $this->sendPageChangeNotification($wikitext, $version, $meta, $emails, $userids);
929 $newrevision->_transformedContent = $formatted;
933 function getPageChangeEmails($notify) {
934 $emails = array(); $userids = array();
935 foreach ($notify as $page => $users) {
936 if (glob_match($page, $this->_pagename)) {
937 foreach ($users as $userid => $user) {
938 if (!empty($user['verified']) and !empty($user['email'])) {
939 $emails[] = $user['email'];
940 $userids[] = $userid;
941 } elseif (!empty($user['email'])) {
943 // do a dynamic emailVerified check update
944 $u = $request->getUser();
945 if ($u->UserName() == $userid) {
946 if ($request->_prefs->get('emailVerified')) {
947 $emails[] = $user['email'];
948 $userids[] = $userid;
949 $notify[$page][$userid]['verified'] = 1;
950 $request->_dbi->set('notify', $notify);
954 if (ENABLE_USER_NEW) {
955 $u = WikiUser($userid);
956 $u->getPreferences();
957 $prefs = &$u->_prefs;
959 $u = new WikiUser($GLOBALS['request'], $userid);
960 $prefs = $u->getPreferences();
962 if ($prefs->get('emailVerified')) {
963 $emails[] = $user['email'];
964 $userids[] = $userid;
965 $notify[$page][$userid]['verified'] = 1;
966 $request->_dbi->set('notify', $notify);
969 // ignore verification
972 if (!in_array($user['email'],$emails))
973 $emails[] = $user['email'];
980 $emails = array_unique($emails);
981 $userids = array_unique($userids);
982 return array($emails,$userids);
986 * Send udiff for a changed page to multiple users.
987 * TODO: for remove, rename also
989 function sendPageChangeNotification($wikitext, $version, $meta, $emails, $userids) {
991 if (@is_array($request->_deferredPageChangeNotification)) {
992 // collapse multiple changes (loaddir) into one email
993 $request->_deferredPageChangeNotification[] = array($this->_pagename, $emails, $userids);
997 $backend = &$request->_dbi->_backend;
998 $subject = _("Page change").' '.urlencode($this->_pagename);
999 $previous = $backend->get_previous_version($this->_pagename, $version);
1000 if (!isset($meta['mtime'])) $meta['mtime'] = time();
1002 $difflink = WikiURL($this->_pagename, array('action'=>'diff'),true);
1003 $cache = &$request->_dbi->_cache;
1004 $this_content = explode("\n", $wikitext);
1005 $prevdata = $cache->get_versiondata($this->_pagename, $previous, true);
1006 if (empty($prevdata['%content']))
1007 $prevdata = $backend->get_versiondata($this->_pagename, $previous, true);
1008 $other_content = explode("\n", $prevdata['%content']);
1010 include_once("lib/diff.php");
1011 $diff2 = new Diff($other_content, $this_content);
1012 $context_lines = max(4, count($other_content) + 1,
1013 count($this_content) + 1);
1014 $fmt = new UnifiedDiffFormatter($context_lines);
1015 $content = $this->_pagename . " " . $previous . " " . Iso8601DateTime($prevdata['mtime']) . "\n";
1016 $content .= $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
1017 $content .= $fmt->format($diff2);
1020 $difflink = WikiURL($this->_pagename,array(),true);
1021 $content = $this->_pagename . " " . $version . " " . Iso8601DateTime($meta['mtime']) . "\n";
1022 $content .= _("New Page");
1024 $editedby = sprintf(_("Edited by: %s"), $meta['author']);
1025 $emails = join(',',$emails);
1026 if (mail($emails,"[".WIKI_NAME."] ".$subject,
1031 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
1032 $this->_pagename, join(',',$userids)), E_USER_NOTICE);
1034 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
1035 $this->_pagename, join(',',$userids)), E_USER_WARNING);
1038 /** support mass rename / remove (not yet)
1040 function sendPageRenameNotification($to, &$meta, $emails, $userids) {
1042 if (@is_array($request->_deferredPageRenameNotification)) {
1043 $request->_deferredPageRenameNotification[] = array($this->_pagename, $to, $meta, $emails, $userids);
1045 $from = $this->_pagename;
1046 $editedby = sprintf(_("Edited by: %s"), $meta['author']) . ' ' . $meta['author_id'];
1047 $emails = join(',',$emails);
1048 $subject = sprintf(_("Page rename %s to %s"), urlencode($from), urlencode($to));
1049 $link = WikiURL($to, true);
1050 if (mail($emails,"[".WIKI_NAME."] ".$subject,
1054 "Renamed $from to $to"))
1055 trigger_error(sprintf(_("PageChange Notification of %s sent to %s"),
1056 $from, join(',',$userids)), E_USER_NOTICE);
1058 trigger_error(sprintf(_("PageChange Notification Error: Couldn't send %s to %s"),
1059 $from, join(',',$userids)), E_USER_WARNING);
1064 * Get the most recent revision of a page.
1068 * @return WikiDB_PageRevision The current WikiDB_PageRevision object.
1070 function getCurrentRevision($need_content = true) {
1071 $backend = &$GLOBALS['request']->_dbi->_backend;
1072 $cache = &$GLOBALS['request']->_dbi->_cache;
1073 $pagename = &$this->_pagename;
1075 // Prevent deadlock in case of memory exhausted errors
1076 // Pure selection doesn't really need locking here.
1077 // sf.net bug#927395
1078 // I know it would be better, but with lots of pages this deadlock is more
1079 // severe than occasionally get not the latest revision.
1081 $version = $cache->get_latest_version($pagename);
1082 // getRevision gets the content also!
1083 $revision = $this->getRevision($version, $need_content);
1084 //$backend->unlock();
1090 * Get a specific revision of a WikiDB_Page.
1094 * @param integer $version Which revision to get.
1096 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or
1097 * false if the requested revision does not exist in the {@link WikiDB}.
1098 * Note that version zero of any page always exists.
1100 function getRevision($version, $need_content=true) {
1101 $cache = &$GLOBALS['request']->_dbi->_cache;
1102 $pagename = &$this->_pagename;
1104 if (! $version ) // 0 or false
1105 return new WikiDB_PageRevision(/*$GLOBALS['request']->_dbi,*/ $pagename, 0);
1107 assert($version > 0);
1108 $vdata = $cache->get_versiondata($pagename, $version, $need_content);
1111 return new WikiDB_PageRevision(/*$GLOBALS['request']->_dbi,*/ $pagename, $version,
1116 * Get previous page revision.
1118 * This method find the most recent revision before a specified
1123 * @param integer $version Find most recent revision before this version.
1124 * You can also use a WikiDB_PageRevision object to specify the $version.
1126 * @return WikiDB_PageRevision The requested WikiDB_PageRevision object, or false if the
1127 * requested revision does not exist in the {@link WikiDB}. Note that
1128 * unless $version is greater than zero, a revision (perhaps version zero,
1129 * the default revision) will always be found.
1131 function getRevisionBefore($version, $need_content=true) {
1132 $backend = &$GLOBALS['request']->_dbi->_backend;
1133 $pagename = &$this->_pagename;
1135 $version = $this->_coerce_to_version($version);
1140 $previous = $backend->get_previous_version($pagename, $version);
1141 $revision = $this->getRevision($previous, $need_content);
1142 //$backend->unlock();
1148 * Get all revisions of the WikiDB_Page.
1150 * This does not include the version zero (default) revision in the
1151 * returned revision set.
1153 * @return WikiDB_PageRevisionIterator A
1154 * WikiDB_PageRevisionIterator containing all revisions of this
1155 * WikiDB_Page in reverse order by version number.
1157 function getAllRevisions() {
1158 $backend = &$GLOBALS['request']->_dbi->_backend;
1159 $revs = $backend->get_all_revisions($this->_pagename);
1160 return new WikiDB_PageRevisionIterator(/*$GLOBALS['request']->_dbi,*/ $revs);
1164 * Find pages which link to or are linked from a page.
1168 * @param boolean $reversed Which links to find: true for backlinks (default).
1170 * @return WikiDB_PageIterator A WikiDB_PageIterator containing
1171 * all matching pages.
1173 function getLinks($reversed = true) {
1174 $backend = &$GLOBALS['request']->_dbi->_backend;
1175 $result = $backend->get_links($this->_pagename, $reversed);
1176 return new WikiDB_PageIterator(/*$GLOBALS['request']->_dbi,*/ $result);
1180 * All Links from other pages to this page.
1182 function getBackLinks() {
1183 return $this->getLinks(true);
1186 * Forward Links: All Links from this page to other pages.
1188 function getPageLinks() {
1189 return $this->getLinks(false);
1193 * Access WikiDB_Page meta-data.
1197 * @param string $key Which meta data to get.
1198 * Some reserved meta-data keys are:
1200 * <dt>'locked'<dd> Is page locked?
1201 * <dt>'hits' <dd> Page hit counter.
1202 * <dt>'pref' <dd> Users preferences, stored in homepages.
1203 * <dt>'owner' <dd> Default: first author_id. We might add a group with a dot here:
1204 * E.g. "owner.users"
1205 * <dt>'perm' <dd> Permission flag to authorize read/write/execution of
1206 * page-headers and content.
1207 * <dt>'score' <dd> Page score (not yet implement, do we need?)
1210 * @return scalar The requested value, or false if the requested data
1213 function get($key) {
1214 $cache = &$GLOBALS['request']->_dbi->_cache;
1215 if (!$key || $key[0] == '%')
1217 $data = $cache->get_pagedata($this->_pagename);
1218 return isset($data[$key]) ? $data[$key] : false;
1222 * Get all the page meta-data as a hash.
1224 * @return hash The page meta-data.
1226 function getMetaData() {
1227 $cache = &$GLOBALS['request']->_dbi->_cache;
1228 $data = $cache->get_pagedata($this->_pagename);
1230 foreach ($data as $key => $val) {
1231 if (/*!empty($val) &&*/ $key[0] != '%')
1238 * Set page meta-data.
1243 * @param string $key Meta-data key to set.
1244 * @param string $newval New value.
1246 function set($key, $newval) {
1247 $cache = &$GLOBALS['request']->_dbi->_cache;
1248 $pagename = &$this->_pagename;
1250 assert($key && $key[0] != '%');
1252 $data = $cache->get_pagedata($pagename);
1254 if (!empty($newval)) {
1255 if (!empty($data[$key]) && $data[$key] == $newval)
1256 return; // values identical, skip update.
1259 if (empty($data[$key]))
1260 return; // values identical, skip update.
1263 $cache->update_pagedata($pagename, array($key => $newval));
1267 * Increase page hit count.
1269 * FIXME: IS this needed? Probably not.
1271 * This is a convenience function.
1272 * <pre> $page->increaseHitCount(); </pre>
1273 * is functionally identical to
1274 * <pre> $page->set('hits',$page->get('hits')+1); </pre>
1276 * Note that this method may be implemented in more efficient ways
1277 * in certain backends.
1281 function increaseHitCount() {
1282 @$newhits = $this->get('hits') + 1;
1283 $this->set('hits', $newhits);
1287 * Return a string representation of the WikiDB_Page
1289 * This is really only for debugging.
1293 * @return string Printable representation of the WikiDB_Page.
1295 function asString () {
1297 printf("[%s:%s\n", get_class($this), $this->getName());
1298 print_r($this->getMetaData());
1300 $strval = ob_get_contents();
1308 * @param integer_or_object $version_or_pagerevision
1309 * Takes either the version number (and int) or a WikiDB_PageRevision
1311 * @return integer The version number.
1313 function _coerce_to_version($version_or_pagerevision) {
1314 if (method_exists($version_or_pagerevision, "getContent"))
1315 $version = $version_or_pagerevision->getVersion();
1317 $version = (int) $version_or_pagerevision;
1319 assert($version >= 0);
1323 function isUserPage ($include_empty = true) {
1324 if ($include_empty) {
1325 $current = $this->getCurrentRevision(false);
1326 if ($current->hasDefaultContents()) {
1330 return $this->get('pref') ? true : false;
1333 // May be empty. Either the stored owner (/Chown), or the first authorized author
1334 function getOwner() {
1335 if ($owner = $this->get('owner'))
1336 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1337 // check all revisions forwards for the first author_id
1338 $backend = &$GLOBALS['request']->_dbi->_backend;
1339 $pagename = &$this->_pagename;
1340 $latestversion = $backend->get_latest_version($pagename);
1341 for ($v=1; $v <= $latestversion; $v++) {
1342 $rev = $this->getRevision($v,false);
1343 if ($rev and $owner = $rev->get('author_id')) {
1344 return ($owner == "The PhpWiki programming team") ? ADMIN_USER : $owner;
1350 // The authenticated author of the first revision or empty if not authenticated then.
1351 function getCreator() {
1352 if ($current = $this->getRevision(1,false)) return $current->get('author_id');
1356 // The authenticated author of the current revision.
1357 function getAuthor() {
1358 if ($current = $this->getCurrentRevision(false)) return $current->get('author_id');
1365 * This class represents a specific revision of a WikiDB_Page within
1368 * A WikiDB_PageRevision has read-only semantics. You may only create
1369 * new revisions (and delete old ones) --- you cannot modify existing
1372 class WikiDB_PageRevision
1374 //var $_transformedContent = false; // set by WikiDB_Page::save()
1376 function WikiDB_PageRevision(/*$wikidb,*/ $pagename, $version,
1377 $versiondata = false)
1379 //$GLOBALS['request']->_dbi = &$wikidb;
1380 $this->_pagename = $pagename;
1381 $this->_version = $version;
1382 $this->_data = $versiondata ? $versiondata : array();
1383 $this->_transformedContent = false; // set by WikiDB_Page::save()
1387 * Get the WikiDB_Page which this revision belongs to.
1391 * @return WikiDB_Page The WikiDB_Page which this revision belongs to.
1393 function getPage() {
1394 return new WikiDB_Page(/*$GLOBALS['request']->_dbi,*/ $this->_pagename);
1398 * Get the version number of this revision.
1402 * @return integer The version number of this revision.
1404 function getVersion() {
1405 return $this->_version;
1409 * Determine whether this revision has defaulted content.
1411 * The default revision (version 0) of each page, as well as any
1412 * pages which are created with empty content have their content
1413 * defaulted to something like:
1415 * Describe [ThisPage] here.
1420 * @return boolean Returns true if the page has default content.
1422 function hasDefaultContents() {
1423 $data = &$this->_data;
1424 return empty($data['%content']);
1428 * Get the content as an array of lines.
1432 * @return array An array of lines.
1433 * The lines should contain no trailing white space.
1435 function getContent() {
1436 return explode("\n", $this->getPackedContent());
1440 * Get the pagename of the revision.
1444 * @return string pagename.
1446 function getPageName() {
1447 return $this->_pagename;
1451 * Determine whether revision is the latest.
1455 * @return boolean True iff the revision is the latest (most recent) one.
1457 function isCurrent() {
1458 if (!isset($this->_iscurrent)) {
1459 $page = $this->getPage();
1460 $current = $page->getCurrentRevision(false);
1461 $this->_iscurrent = $this->getVersion() == $current->getVersion();
1463 return $this->_iscurrent;
1467 * Get the transformed content of a page.
1469 * @param string $pagetype Override the page-type of the revision.
1471 * @return object An XmlContent-like object containing the page transformed
1474 function getTransformedContent($pagetype_override=false) {
1475 $backend = &$GLOBALS['request']->_dbi->_backend;
1477 if ($pagetype_override) {
1478 // Figure out the normal page-type for this page.
1479 $type = PageType::GetPageType($this->get('pagetype'));
1480 if ($type->getName() == $pagetype_override)
1481 $pagetype_override = false; // Not really an override...
1484 if ($pagetype_override) {
1485 // Overriden page type, don't cache (or check cache).
1486 return new TransformedText($this->getPage(),
1487 $this->getPackedContent(),
1488 $this->getMetaData(),
1489 $pagetype_override);
1492 $possibly_cache_results = true;
1494 if (defined('WIKIDB_NOCACHE_MARKUP') and WIKIDB_NOCACHE_MARKUP) {
1495 if (WIKIDB_NOCACHE_MARKUP == 'purge') {
1496 // flush cache for this page.
1497 $page = $this->getPage();
1498 $page->set('_cached_html', false);
1500 $possibly_cache_results = false;
1502 elseif (!$this->_transformedContent) {
1504 if ($this->isCurrent()) {
1505 $page = $this->getPage();
1506 $this->_transformedContent = TransformedText::unpack($page->get('_cached_html'));
1509 $possibly_cache_results = false;
1511 //$backend->unlock();
1514 if (!$this->_transformedContent) {
1515 $text = $this->getPackedContent();
1516 $this->_transformedContent
1517 = new TransformedText($this->getPage(),
1519 $this->getMetaData());
1521 if ($possibly_cache_results) {
1522 // If we're still the current version, cache the transfomed page.
1524 if ($this->isCurrent()) {
1525 $page->set('_cached_html', $this->_transformedContent->pack());
1527 //$backend->unlock();
1531 return $this->_transformedContent;
1535 * Get the content as a string.
1539 * @return string The page content.
1540 * Lines are separated by new-lines.
1542 function getPackedContent() {
1543 $data = &$this->_data;
1546 if (empty($data['%content'])) {
1547 include_once('lib/InlineParser.php');
1549 // A feature similar to taglines at http://www.wlug.org.nz/
1550 // Lib from http://www.aasted.org/quote/
1551 if (defined('FORTUNE_DIR')
1552 and is_dir(FORTUNE_DIR)
1553 and in_array($GLOBALS['request']->getArg('action'),
1554 array('create','edit')))
1556 include_once("lib/fortune.php");
1557 $fortune = new Fortune();
1558 $quote = str_replace("\n<br>","\n", $fortune->quoteFromDir(FORTUNE_DIR));
1559 return sprintf("<verbatim>\n%s</verbatim>\n\n"._("Describe %s here."),
1560 $quote, "[" . WikiEscape($this->_pagename) . "]");
1562 // Replace empty content with default value.
1563 return sprintf(_("Describe %s here."),
1564 "[" . WikiEscape($this->_pagename) . "]");
1567 // There is (non-default) content.
1568 assert($this->_version > 0);
1570 if (!is_string($data['%content'])) {
1571 // Content was not provided to us at init time.
1572 // (This is allowed because for some backends, fetching
1573 // the content may be expensive, and often is not wanted
1576 // In any case, now we need to get it.
1577 $data['%content'] = $this->_get_content();
1578 assert(is_string($data['%content']));
1581 return $data['%content'];
1584 function _get_content() {
1585 $cache = &$GLOBALS['request']->_dbi->_cache;
1586 $pagename = $this->_pagename;
1587 $version = $this->_version;
1589 assert($version > 0);
1591 $newdata = $cache->get_versiondata($pagename, $version, true);
1593 assert(is_string($newdata['%content']));
1594 return $newdata['%content'];
1597 // else revision has been deleted... What to do?
1598 return __sprintf("Oops! Revision %s of %s seems to have been deleted!",
1599 $version, $pagename);
1604 * Get meta-data for this revision.
1609 * @param string $key Which meta-data to access.
1611 * Some reserved revision meta-data keys are:
1613 * <dt> 'mtime' <dd> Time this revision was created (seconds since midnight Jan 1, 1970.)
1614 * The 'mtime' meta-value is normally set automatically by the database
1615 * backend, but it may be specified explicitly when creating a new revision.
1617 * <dd> To ensure consistency of RecentChanges, the mtimes of the versions
1618 * of a page must be monotonically increasing. If an attempt is
1619 * made to create a new revision with an mtime less than that of
1620 * the preceeding revision, the new revisions timestamp is force
1621 * to be equal to that of the preceeding revision. In that case,
1622 * the originally requested mtime is preserved in 'orig_mtime'.
1623 * <dt> '_supplanted' <dd> Time this revision ceased to be the most recent.
1624 * This meta-value is <em>always</em> automatically maintained by the database
1625 * backend. (It is set from the 'mtime' meta-value of the superceding
1626 * revision.) '_supplanted' has a value of 'false' for the current revision.
1628 * FIXME: this could be refactored:
1630 * <dd> Author of the page (as he should be reported in, e.g. RecentChanges.)
1632 * <dd> Authenticated author of a page. This is used to identify
1633 * the distinctness of authors when cleaning old revisions from
1635 * <dt> 'is_minor_edit' <dd> Set if change was marked as a minor revision by the author.
1636 * <dt> 'summary' <dd> Short change summary entered by page author.
1639 * Meta-data keys must be valid C identifers (they have to start with a letter
1640 * or underscore, and can contain only alphanumerics and underscores.)
1642 * @return string The requested value, or false if the requested value
1645 function get($key) {
1646 if (!$key || $key[0] == '%')
1648 $data = &$this->_data;
1649 return isset($data[$key]) ? $data[$key] : false;
1653 * Get all the revision page meta-data as a hash.
1655 * @return hash The revision meta-data.
1657 function getMetaData() {
1659 foreach ($this->_data as $key => $val) {
1660 if (!empty($val) && $key[0] != '%')
1668 * Return a string representation of the revision.
1670 * This is really only for debugging.
1674 * @return string Printable representation of the WikiDB_Page.
1676 function asString () {
1678 printf("[%s:%d\n", get_class($this), $this->get('version'));
1679 print_r($this->_data);
1680 echo $this->getPackedContent() . "\n]\n";
1681 $strval = ob_get_contents();
1689 * Class representing a sequence of WikiDB_Pages.
1690 * TODO: Enhance to php5 iterators
1692 class WikiDB_PageIterator
1694 function WikiDB_PageIterator(/*&$wikidb,*/ &$pages) {
1695 $this->_pages = $pages;
1699 return $this->_pages->count();
1703 * Get next WikiDB_Page in sequence.
1707 * @return WikiDB_Page The next WikiDB_Page in the sequence.
1710 if ( ! ($next = $this->_pages->next()) )
1713 $pagename = &$next['pagename'];
1715 trigger_error('empty pagename in WikiDB_PageIterator::next()', E_USER_WARNING);
1719 // there's always hits, but we cache only if more
1720 // (well not with file, cvs and dba)
1721 if (isset($next['pagedata']) and count($next['pagedata']) > 1) {
1722 $GLOBALS['request']->_dbi->_cache->cache_data($next);
1725 return new WikiDB_Page(/*$GLOBALS['request']->_dbi,*/ $pagename);
1729 * Release resources held by this iterator.
1731 * The iterator may not be used after free() is called.
1733 * There is no need to call free(), if next() has returned false.
1734 * (I.e. if you iterate through all the pages in the sequence,
1735 * you do not need to call free() --- you only need to call it
1736 * if you stop before the end of the iterator is reached.)
1741 $this->_pages->free();
1744 function asArray() {
1746 while ($page = $this->next())
1756 * A class which represents a sequence of WikiDB_PageRevisions.
1757 * TODO: Enhance to php5 iterators
1759 class WikiDB_PageRevisionIterator
1761 function WikiDB_PageRevisionIterator(/*&$wikidb,*/ $revisions) {
1762 $this->_revisions = $revisions;
1763 //$GLOBALS['request']->_dbi = &$wikidb;
1767 return $this->_revisions->count();
1771 * Get next WikiDB_PageRevision in sequence.
1775 * @return WikiDB_PageRevision
1776 * The next WikiDB_PageRevision in the sequence.
1779 if ( ! ($next = $this->_revisions->next()) )
1782 $GLOBALS['request']->_dbi->_cache->cache_data($next);
1784 $pagename = $next['pagename'];
1785 $version = $next['version'];
1786 $versiondata = $next['versiondata'];
1788 if (!(is_string($pagename) and $pagename != '')) {
1789 trigger_error("empty pagename",E_USER_WARNING);
1792 } else assert(is_string($pagename) and $pagename != '');
1794 if (!is_array($versiondata)) {
1795 trigger_error("empty versiondata",E_USER_WARNING);
1798 } else assert(is_array($versiondata));
1800 if (!($version > 0)) {
1801 trigger_error("invalid version",E_USER_WARNING);
1804 } else assert($version > 0);
1806 return new WikiDB_PageRevision(/*$GLOBALS['request']->_dbi,*/ $pagename, $version,
1811 * Release resources held by this iterator.
1813 * The iterator may not be used after free() is called.
1815 * There is no need to call free(), if next() has returned false.
1816 * (I.e. if you iterate through all the revisions in the sequence,
1817 * you do not need to call free() --- you only need to call it
1818 * if you stop before the end of the iterator is reached.)
1823 $this->_revisions->free();
1826 function asArray() {
1828 while ($rev = $this->next())
1837 class WikiDB_Array_PageIterator
1839 function WikiDB_Array_PageIterator(&$pagenames) {
1841 $this->_dbi = $request->getDbh();
1842 $this->_pages = $pagenames;
1843 reset($this->_pages);
1846 $c =& current($this->_pages);
1847 next($this->_pages);
1848 return $c !== false ? $this->_dbi->getPage($c) : false;
1851 return count($this->_pages);
1854 function asArray() {
1855 reset($this->_pages);
1856 return $this->_pages;
1860 class WikiDB_Array_generic_iter
1862 function WikiDB_Array_generic_iter($result) {
1863 // $result may be either an array or a query result
1864 if (is_array($result)) {
1865 $this->_array = $result;
1866 } elseif (is_object($result)) {
1867 $this->_array = $result->asArray();
1869 $this->_array = array();
1871 if (!empty($this->_array))
1872 reset($this->_array);
1875 $c =& current($this->_array);
1876 next($this->_array);
1877 return $c !== false ? $c : false;
1880 return count($this->_array);
1883 function asArray() {
1884 if (!empty($this->_array))
1885 reset($this->_array);
1886 return $this->_array;
1891 * Data cache used by WikiDB.
1893 * FIXME: Maybe rename this to caching_backend (or some such).
1899 // FIXME: beautify versiondata cache. Cache only limited data?
1901 function WikiDB_cache (&$backend) {
1902 $this->_backend = &$backend;
1904 $this->_pagedata_cache = array();
1905 $this->_versiondata_cache = array();
1906 array_push ($this->_versiondata_cache, array());
1907 $this->_glv_cache = array();
1911 $this->_pagedata_cache = array();
1912 $this->_versiondata_cache = array();
1913 $this->_glv_cache = array();
1916 function get_pagedata($pagename) {
1917 assert(is_string($pagename) && $pagename != '');
1918 if (defined('USECACHE') and USECACHE) {
1919 $cache = &$this->_pagedata_cache;
1920 if (!isset($cache[$pagename]) || !is_array($cache[$pagename])) {
1921 $cache[$pagename] = $this->_backend->get_pagedata($pagename);
1922 // Never keep a ['%pagedata']['_cached_html'] in cache, other than the current page.
1923 if (isset($cache[$pagename]['_cached_html'])
1924 and $pagename != $GLOBALS['request']->getArg('pagename')) {
1925 unset($cache[$pagename]['_cached_html']);
1927 if (empty($cache[$pagename]))
1928 $cache[$pagename] = array();
1930 return $cache[$pagename];
1932 return $this->_backend->get_pagedata($pagename);
1936 function update_pagedata($pagename, $newdata) {
1937 assert(is_string($pagename) && $pagename != '');
1939 $this->_backend->update_pagedata($pagename, $newdata);
1941 if (defined('USECACHE') and USECACHE
1942 and is_array($this->_pagedata_cache[$pagename]))
1944 $cachedata = &$this->_pagedata_cache[$pagename];
1945 foreach($newdata as $key => $val)
1946 $cachedata[$key] = $val;
1950 function invalidate_cache($pagename) {
1951 unset ($this->_pagedata_cache[$pagename]);
1952 unset ($this->_versiondata_cache[$pagename]);
1953 unset ($this->_glv_cache[$pagename]);
1954 unset ($this->_backend->_page_data);
1957 function delete_page($pagename) {
1958 $this->_backend->delete_page($pagename);
1959 unset ($this->_pagedata_cache[$pagename]);
1960 unset ($this->_glv_cache[$pagename]);
1964 function cache_data($data) {
1965 if (isset($data['pagedata']))
1966 $this->_pagedata_cache[$data['pagename']] = $data['pagedata'];
1969 function get_versiondata($pagename, $version, $need_content = false) {
1970 // FIXME: Seriously ugly hackage
1971 if (defined('USECACHE') and USECACHE) { //temporary - for debugging
1972 assert(is_string($pagename) && $pagename != '');
1973 // there is a bug here somewhere which results in an assertion failure at line 105
1974 // of ArchiveCleaner.php It goes away if we use the next line.
1975 //$need_content = true;
1976 $nc = $need_content ? '1':'0';
1977 $cache = &$this->_versiondata_cache;
1978 if (!isset($cache[$pagename][$version][$nc])||
1979 !(is_array ($cache[$pagename])) || !(is_array ($cache[$pagename][$version]))) {
1980 $cache[$pagename][$version][$nc] =
1981 $this->_backend->get_versiondata($pagename, $version, $need_content);
1982 // If we have retrieved all data, we may as well set the cache for $need_content = false
1984 $cache[$pagename][$version]['0'] =& $cache[$pagename][$version]['1'];
1987 $vdata = $cache[$pagename][$version][$nc];
1989 $vdata = $this->_backend->get_versiondata($pagename, $version, $need_content);
1992 // Rationale: never keep ['%pagedata']['_cached_html'] in cache.
1993 if ($vdata && !empty($vdata['%pagedata'])) {
1994 $this->_pagedata_cache[$pagename] =& $vdata['%pagedata'];
1995 // only store _cached_html for the requested page
1996 if (defined('USECACHE') and USECACHE
1997 and isset($vdata['%pagedata']['_cached_html'])
1998 and $pagename != $GLOBALS['request']->getArg('pagename'))
2000 unset($this->_pagedata_cache[$pagename]['_cached_html']);
2001 unset($cache[$pagename][$version][$nc]['%pagedata']['_cached_html']);
2003 unset($cache[$pagename][$version][0]['%pagedata']['_cached_html']);
2009 function set_versiondata($pagename, $version, $data) {
2010 $new = $this->_backend->set_versiondata($pagename, $version, $data);
2012 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2013 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2014 // Is this necessary?
2015 unset($this->_glv_cache[$pagename]);
2018 function update_versiondata($pagename, $version, $data) {
2019 $new = $this->_backend->update_versiondata($pagename, $version, $data);
2021 // FIXME: never keep ['%pagedata']['_cached_html'] in cache.
2022 $this->_versiondata_cache[$pagename][$version]['1'] = $data;
2024 $this->_versiondata_cache[$pagename][$version]['0'] = $data;
2025 // Is this necessary?
2026 unset($this->_glv_cache[$pagename]);
2029 function delete_versiondata($pagename, $version) {
2030 $new = $this->_backend->delete_versiondata($pagename, $version);
2031 if (isset($this->_versiondata_cache[$pagename][$version]['1']))
2032 unset ($this->_versiondata_cache[$pagename][$version]['1']);
2033 if (isset($this->_versiondata_cache[$pagename][$version]['0']))
2034 unset ($this->_versiondata_cache[$pagename][$version]['0']);
2035 if (isset($this->_glv_cache[$pagename]))
2036 unset ($this->_glv_cache[$pagename]);
2039 function get_latest_version($pagename) {
2040 if (defined('USECACHE') and USECACHE) {
2041 assert (is_string($pagename) && $pagename != '');
2042 $cache = &$this->_glv_cache;
2043 if (!isset($cache[$pagename])) {
2044 $cache[$pagename] = $this->_backend->get_latest_version($pagename);
2045 if (empty($cache[$pagename]))
2046 $cache[$pagename] = 0;
2048 return $cache[$pagename];
2050 return $this->_backend->get_latest_version($pagename);
2056 // $Log: not supported by cvs2svn $
2057 // Revision 1.97 2004/11/07 16:02:51 rurban
2058 // new sql access log (for spam prevention), and restructured access log class
2059 // dbh->quote (generic)
2060 // pear_db: mysql specific parts seperated (using replace)
2062 // Revision 1.96 2004/11/05 22:32:15 rurban
2063 // encode the subject to be 7-bit safe
2065 // Revision 1.95 2004/11/05 20:53:35 rurban
2066 // login cleanup: better debug msg on failing login,
2067 // checked password less immediate login (bogo or anon),
2068 // checked olduser pref session error,
2069 // better PersonalPage without password warning on minimal password length=0
2070 // (which is default now)
2072 // Revision 1.94 2004/11/01 10:43:56 rurban
2073 // seperate PassUser methods into seperate dir (memory usage)
2074 // fix WikiUser (old) overlarge data session
2075 // remove wikidb arg from various page class methods, use global ->_dbi instead
2078 // Revision 1.93 2004/10/14 17:17:57 rurban
2079 // remove dbi WikiDB_Page param: use global request object instead. (memory)
2080 // allow most_popular sortby arguments
2082 // Revision 1.92 2004/10/05 17:00:04 rurban
2083 // support paging for simple lists
2084 // fix RatingDb sql backend.
2085 // remove pages from AllPages (this is ListPages then)
2087 // Revision 1.91 2004/10/04 23:41:19 rurban
2088 // delete notify: fix, @unset syntax error
2090 // Revision 1.90 2004/09/28 12:50:22 rurban
2091 // https://sourceforge.net/forum/forum.php?thread_id=1150924&forum_id=18929
2093 // Revision 1.89 2004/09/26 10:54:42 rurban
2094 // silence deferred check
2096 // Revision 1.88 2004/09/25 18:16:40 rurban
2097 // unset more unneeded _cached_html. (Guess this should fix sf.net now)
2099 // Revision 1.87 2004/09/25 16:25:40 rurban
2100 // notify on rename and remove (to be improved)
2102 // Revision 1.86 2004/09/23 18:52:06 rurban
2103 // only fortune at create
2105 // Revision 1.85 2004/09/16 08:00:51 rurban
2106 // just some comments
2108 // Revision 1.84 2004/09/14 10:34:30 rurban
2109 // fix TransformedText call to use refs
2111 // Revision 1.83 2004/09/08 13:38:00 rurban
2112 // improve loadfile stability by using markup=2 as default for undefined markup-style.
2113 // use more refs for huge objects.
2114 // fix debug=static issue in WikiPluginCached
2116 // Revision 1.82 2004/09/06 12:08:49 rurban
2117 // memory_limit on unix workaround
2118 // VisualWiki: default autosize image
2120 // Revision 1.81 2004/09/06 08:28:00 rurban
2121 // rename genericQuery to genericSqlQuery
2123 // Revision 1.80 2004/07/09 13:05:34 rurban
2126 // Revision 1.79 2004/07/09 10:06:49 rurban
2127 // Use backend specific sortby and sortable_columns method, to be able to
2128 // select between native (Db backend) and custom (PageList) sorting.
2129 // Fixed PageList::AddPageList (missed the first)
2130 // Added the author/creator.. name to AllPagesBy...
2131 // display no pages if none matched.
2132 // Improved dba and file sortby().
2133 // Use &$request reference
2135 // Revision 1.78 2004/07/08 21:32:35 rurban
2136 // Prevent from more warnings, minor db and sort optimizations
2138 // Revision 1.77 2004/07/08 19:04:42 rurban
2139 // more unittest fixes (file backend, metadata RatingsDb)
2141 // Revision 1.76 2004/07/08 17:31:43 rurban
2142 // improve numPages for file (fixing AllPagesTest)
2144 // Revision 1.75 2004/07/05 13:56:22 rurban
2145 // sqlite autoincrement fix
2147 // Revision 1.74 2004/07/03 16:51:05 rurban
2148 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
2149 // added atomic mysql REPLACE for PearDB as in ADODB
2150 // fixed _lock_tables typo links => link
2151 // fixes unserialize ADODB bug in line 180
2153 // Revision 1.73 2004/06/29 08:52:22 rurban
2154 // Use ...version() $need_content argument in WikiDB also:
2155 // To reduce the memory footprint for larger sets of pagelists,
2156 // we don't cache the content (only true or false) and
2157 // we purge the pagedata (_cached_html) also.
2158 // _cached_html is only cached for the current pagename.
2159 // => Vastly improved page existance check, ACL check, ...
2161 // Now only PagedList info=content or size needs the whole content, esp. if sortable.
2163 // Revision 1.72 2004/06/25 14:15:08 rurban
2164 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
2166 // Revision 1.71 2004/06/21 16:22:30 rurban
2167 // add DEFAULT_DUMP_DIR and HTML_DUMP_DIR constants, for easier cmdline dumps,
2168 // fixed dumping buttons locally (images/buttons/),
2169 // support pages arg for dumphtml,
2170 // optional directory arg for dumpserial + dumphtml,
2171 // fix a AllPages warning,
2172 // show dump warnings/errors on DEBUG,
2173 // don't warn just ignore on wikilens pagelist columns, if not loaded.
2174 // RateIt pagelist column is called "rating", not "ratingwidget" (Dan?)
2176 // Revision 1.70 2004/06/18 14:39:31 rurban
2177 // actually check USECACHE
2179 // Revision 1.69 2004/06/13 15:33:20 rurban
2180 // new support for arguments owner, author, creator in most relevant
2181 // PageList plugins. in WikiAdmin* via preSelectS()
2183 // Revision 1.68 2004/06/08 21:03:20 rurban
2184 // updated RssParser for XmlParser quirks (store parser object params in globals)
2186 // Revision 1.67 2004/06/07 19:12:49 rurban
2187 // fixed rename version=0, bug #966284
2189 // Revision 1.66 2004/06/07 18:57:27 rurban
2190 // fix rename: Change pagename in all linked pages
2192 // Revision 1.65 2004/06/04 20:32:53 rurban
2193 // Several locale related improvements suggested by Pierrick Meignen
2194 // LDAP fix by John Cole
2195 // reanable admin check without ENABLE_PAGEPERM in the admin plugins
2197 // Revision 1.64 2004/06/04 16:50:00 rurban
2198 // add random quotes to empty pages
2200 // Revision 1.63 2004/06/04 11:58:38 rurban
2201 // added USE_TAGLINES
2203 // Revision 1.62 2004/06/03 22:24:41 rurban
2204 // reenable admin check on !ENABLE_PAGEPERM, honor s=Wildcard arg, fix warning after Remove
2206 // Revision 1.61 2004/06/02 17:13:48 rurban
2207 // fix getRevisionBefore assertion
2209 // Revision 1.60 2004/05/28 10:09:58 rurban
2210 // fix bug #962117, incorrect init of auth_dsn
2212 // Revision 1.59 2004/05/27 17:49:05 rurban
2213 // renamed DB_Session to DbSession (in CVS also)
2214 // added WikiDB->getParam and WikiDB->getAuthParam method to get rid of globals
2215 // remove leading slash in error message
2216 // added force_unlock parameter to File_Passwd (no return on stale locks)
2217 // fixed adodb session AffectedRows
2218 // added FileFinder helpers to unify local filenames and DATA_PATH names
2219 // editpage.php: new edit toolbar javascript on ENABLE_EDIT_TOOLBAR
2221 // Revision 1.58 2004/05/18 13:59:14 rurban
2222 // rename simpleQuery to genericQuery
2224 // Revision 1.57 2004/05/16 22:07:35 rurban
2225 // check more config-default and predefined constants
2226 // various PagePerm fixes:
2227 // fix default PagePerms, esp. edit and view for Bogo and Password users
2228 // implemented Creator and Owner
2229 // BOGOUSERS renamed to BOGOUSER
2230 // fixed syntax errors in signin.tmpl
2232 // Revision 1.56 2004/05/15 22:54:49 rurban
2233 // fixed important WikiDB bug with DEBUG > 0: wrong assertion
2234 // improved SetAcl (works) and PagePerms, some WikiGroup helpers.
2236 // Revision 1.55 2004/05/12 19:27:47 rurban
2237 // revert wrong inline optimization.
2239 // Revision 1.54 2004/05/12 10:49:55 rurban
2240 // require_once fix for those libs which are loaded before FileFinder and
2241 // its automatic include_path fix, and where require_once doesn't grok
2242 // dirname(__FILE__) != './lib'
2243 // upgrade fix with PearDB
2244 // navbar.tmpl: remove spaces for IE button alignment
2246 // Revision 1.53 2004/05/08 14:06:12 rurban
2247 // new support for inlined image attributes: [image.jpg size=50x30 align=right]
2248 // minor stability and portability fixes
2250 // Revision 1.52 2004/05/06 19:26:16 rurban
2251 // improve stability, trying to find the InlineParser endless loop on sf.net
2253 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
2255 // Revision 1.51 2004/05/06 17:30:37 rurban
2256 // CategoryGroup: oops, dos2unix eol
2257 // improved phpwiki_version:
2258 // pre -= .0001 (1.3.10pre: 1030.099)
2259 // -p1 += .001 (1.3.9-p1: 1030.091)
2260 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
2261 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
2262 // backend->backendType(), backend->database(),
2263 // backend->listOfFields(),
2264 // backend->listOfTables(),
2266 // Revision 1.50 2004/05/04 22:34:25 rurban
2269 // Revision 1.49 2004/05/03 11:16:40 rurban
2270 // fixed sendPageChangeNotification
2271 // subject rewording
2273 // Revision 1.48 2004/04/29 23:03:54 rurban
2274 // fixed sf.net bug #940996
2276 // Revision 1.47 2004/04/29 19:39:44 rurban
2277 // special support for formatted plugins (one-liners)
2278 // like <small><plugin BlaBla ></small>
2279 // iter->asArray() helper for PopularNearby
2280 // db_session for older php's (no &func() allowed)
2282 // Revision 1.46 2004/04/26 20:44:34 rurban
2283 // locking table specific for better databases
2285 // Revision 1.45 2004/04/20 00:06:03 rurban
2286 // themable paging support
2288 // Revision 1.44 2004/04/19 18:27:45 rurban
2289 // Prevent from some PHP5 warnings (ref args, no :: object init)
2290 // php5 runs now through, just one wrong XmlElement object init missing
2291 // Removed unneccesary UpgradeUser lines
2292 // Changed WikiLink to omit version if current (RecentChanges)
2294 // Revision 1.43 2004/04/18 01:34:20 rurban
2295 // protect most_popular from sortby=mtime
2297 // Revision 1.42 2004/04/18 01:11:51 rurban
2298 // more numeric pagename fixes.
2299 // fixed action=upload with merge conflict warnings.
2300 // charset changed from constant to global (dynamic utf-8 switching)
2306 // c-basic-offset: 4
2307 // c-hanging-comment-ender-p: nil
2308 // indent-tabs-mode: nil