e3412efac3
These were all checked with codesearch to ensure nothing is overriding these methods. For the most part, I've updated the signature to use nullable types; for two Pager's, I've just made all parameters non-optional, because you're already forced to pass them with a required parameter at the end. Bug: T231636 Change-Id: Ie047891f55fcd322039194cfa9a8549e4f1f6f14
1950 lines
61 KiB
PHP
1950 lines
61 KiB
PHP
<?php
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/**
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* User interface for the difference engine.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup DifferenceEngine
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*/
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use MediaWiki\MediaWikiServices;
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use MediaWiki\Revision\RevisionRecord;
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use MediaWiki\Revision\SlotRecord;
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use MediaWiki\Storage\NameTableAccessException;
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/**
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* DifferenceEngine is responsible for rendering the difference between two revisions as HTML.
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* This includes interpreting URL parameters, retrieving revision data, checking access permissions,
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* selecting and invoking the diff generator class for the individual slots, doing post-processing
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* on the generated diff, adding the rest of the HTML (such as headers) and writing the whole thing
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* to OutputPage.
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*
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* DifferenceEngine can be subclassed by extensions, by customizing
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* ContentHandler::createDifferenceEngine; the content handler will be selected based on the
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* content model of the main slot (of the new revision, when the two are different).
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* That might change after PageTypeHandler gets introduced.
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*
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* In the past, the class was also used for slot-level diff generation, and extensions might still
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* subclass it and add such functionality. When that is the case (sepcifically, when a
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* ContentHandler returns a standard SlotDiffRenderer but a nonstandard DifferenceEngine)
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* DifferenceEngineSlotDiffRenderer will be used to convert the old behavior into the new one.
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*
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* @ingroup DifferenceEngine
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*
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* @todo This class is huge and poorly defined. It should be split into a controller responsible
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* for interpreting query parameters, retrieving data and checking permissions; and a HTML renderer.
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*/
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class DifferenceEngine extends ContextSource {
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use DeprecationHelper;
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/**
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* Constant to indicate diff cache compatibility.
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* Bump this when changing the diff formatting in a way that
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* fixes important bugs or such to force cached diff views to
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* clear.
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*/
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const DIFF_VERSION = '1.12';
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/**
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* Revision ID for the old revision. 0 for the revision previous to $mNewid, false
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* if the diff does not have an old revision (e.g. 'oldid=<first revision of page>&diff=prev'),
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* or the revision does not exist, null if the revision is unsaved.
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* @var int|false|null
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*/
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protected $mOldid;
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/**
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* Revision ID for the new revision. 0 for the last revision of the current page
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* (as defined by the request context), false if the revision does not exist, null
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* if it is unsaved, or an alias such as 'next'.
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* @var int|string|false|null
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*/
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protected $mNewid;
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/**
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* Old revision (left pane).
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* Allowed to be an unsaved revision, unlikely that's ever needed though.
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* False when the old revision does not exist; this can happen when using
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* diff=prev on the first revision. Null when the revision should exist but
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* doesn't (e.g. load failure); loadRevisionData() will return false in that
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* case. Also null until lazy-loaded. Ignored completely when isContentOverridden
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* is set.
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* Since 1.32 public access is deprecated.
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* @var Revision|null|false
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*/
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protected $mOldRev;
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/**
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* New revision (right pane).
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* Note that this might be an unsaved revision (e.g. for edit preview).
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* Null in case of load failure; diff methods will just return an error message in that case,
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* and loadRevisionData() will return false. Also null until lazy-loaded. Ignored completely
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* when isContentOverridden is set.
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* Since 1.32 public access is deprecated.
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* @var Revision|null
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*/
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protected $mNewRev;
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/**
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* Title of $mOldRev or null if the old revision does not exist or does not belong to a page.
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* Since 1.32 public access is deprecated and the property can be null.
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* @var Title|null
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*/
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protected $mOldPage;
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/**
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* Title of $mNewRev or null if the new revision does not exist or does not belong to a page.
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* Since 1.32 public access is deprecated and the property can be null.
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* @var Title|null
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*/
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protected $mNewPage;
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/**
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* Change tags of $mOldRev or null if it does not exist / is not saved.
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* @var string[]|null
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*/
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private $mOldTags;
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/**
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* Change tags of $mNewRev or null if it does not exist / is not saved.
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* @var string[]|null
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*/
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private $mNewTags;
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/**
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* @var Content|null
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* @deprecated since 1.32, content slots are now handled by the corresponding SlotDiffRenderer.
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* This property is set to the content of the main slot, but not actually used for the main diff.
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*/
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private $mOldContent;
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/**
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* @var Content|null
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* @deprecated since 1.32, content slots are now handled by the corresponding SlotDiffRenderer.
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* This property is set to the content of the main slot, but not actually used for the main diff.
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*/
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private $mNewContent;
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/** @var Language */
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protected $mDiffLang;
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/** @var bool Have the revisions IDs been loaded */
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private $mRevisionsIdsLoaded = false;
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/** @var bool Have the revisions been loaded */
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protected $mRevisionsLoaded = false;
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/** @var int How many text blobs have been loaded, 0, 1 or 2? */
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protected $mTextLoaded = 0;
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/**
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* Was the content overridden via setContent()?
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* If the content was overridden, most internal state (e.g. mOldid or mOldRev) should be ignored
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* and only mOldContent and mNewContent is reliable.
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* (Note that setRevisions() does not set this flag as in that case all properties are
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* overriden and remain consistent with each other, so no special handling is needed.)
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* @var bool
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*/
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protected $isContentOverridden = false;
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/** @var bool Was the diff fetched from cache? */
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protected $mCacheHit = false;
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/**
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* Set this to true to add debug info to the HTML output.
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* Warning: this may cause RSS readers to spuriously mark articles as "new"
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* (T22601)
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*/
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public $enableDebugComment = false;
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/** @var bool If true, line X is not displayed when X is 1, for example
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* to increase readability and conserve space with many small diffs.
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*/
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protected $mReducedLineNumbers = false;
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/** @var string Link to action=markpatrolled */
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protected $mMarkPatrolledLink = null;
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/** @var bool Show rev_deleted content if allowed */
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protected $unhide = false;
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/** @var bool Refresh the diff cache */
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protected $mRefreshCache = false;
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/** @var SlotDiffRenderer[] DifferenceEngine classes for the slots, keyed by role name. */
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protected $slotDiffRenderers = null;
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/**
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* Temporary hack for B/C while slot diff related methods of DifferenceEngine are being
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* deprecated. When true, we are inside a DifferenceEngineSlotDiffRenderer and
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* $slotDiffRenderers should not be used.
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* @var bool
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*/
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protected $isSlotDiffRenderer = false;
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/** #@- */
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/**
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* @param IContextSource|null $context Context to use, anything else will be ignored
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* @param int $old Old ID we want to show and diff with.
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* @param string|int $new Either revision ID or 'prev' or 'next'. Default: 0.
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* @param int $rcid Deprecated, no longer used!
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* @param bool $refreshCache If set, refreshes the diff cache
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* @param bool $unhide If set, allow viewing deleted revs
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*/
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public function __construct( $context = null, $old = 0, $new = 0, $rcid = 0,
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$refreshCache = false, $unhide = false
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) {
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$this->deprecatePublicProperty( 'mOldid', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mNewid', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mOldRev', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mNewRev', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mOldPage', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mNewPage', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mOldContent', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mNewContent', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mRevisionsLoaded', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mTextLoaded', '1.32', __CLASS__ );
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$this->deprecatePublicProperty( 'mCacheHit', '1.32', __CLASS__ );
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if ( $context instanceof IContextSource ) {
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$this->setContext( $context );
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}
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wfDebug( "DifferenceEngine old '$old' new '$new' rcid '$rcid'\n" );
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$this->mOldid = $old;
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$this->mNewid = $new;
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$this->mRefreshCache = $refreshCache;
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$this->unhide = $unhide;
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}
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/**
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* @return SlotDiffRenderer[] Diff renderers for each slot, keyed by role name.
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* Includes slots only present in one of the revisions.
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*/
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protected function getSlotDiffRenderers() {
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if ( $this->isSlotDiffRenderer ) {
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throw new LogicException( __METHOD__ . ' called in slot diff renderer mode' );
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}
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if ( $this->slotDiffRenderers === null ) {
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if ( !$this->loadRevisionData() ) {
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return [];
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}
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$slotContents = $this->getSlotContents();
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$this->slotDiffRenderers = array_map( function ( $contents ) {
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/** @var Content $content */
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$content = $contents['new'] ?: $contents['old'];
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return $content->getContentHandler()->getSlotDiffRenderer( $this->getContext() );
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}, $slotContents );
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}
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return $this->slotDiffRenderers;
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}
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/**
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* Mark this DifferenceEngine as a slot renderer (as opposed to a page renderer).
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* This is used in legacy mode when the DifferenceEngine is wrapped in a
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* DifferenceEngineSlotDiffRenderer.
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* @internal For use by DifferenceEngineSlotDiffRenderer only.
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*/
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public function markAsSlotDiffRenderer() {
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$this->isSlotDiffRenderer = true;
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}
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/**
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* Get the old and new content objects for all slots.
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* This method does not do any permission checks.
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* @return array [ role => [ 'old' => SlotRecord|null, 'new' => SlotRecord|null ], ... ]
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*/
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protected function getSlotContents() {
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if ( $this->isContentOverridden ) {
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return [
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SlotRecord::MAIN => [
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'old' => $this->mOldContent,
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'new' => $this->mNewContent,
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]
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];
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} elseif ( !$this->loadRevisionData() ) {
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return [];
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}
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$newSlots = $this->mNewRev->getRevisionRecord()->getSlots()->getSlots();
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if ( $this->mOldRev ) {
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$oldSlots = $this->mOldRev->getRevisionRecord()->getSlots()->getSlots();
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} else {
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$oldSlots = [];
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}
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// The order here will determine the visual order of the diff. The current logic is
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// slots of the new revision first in natural order, then deleted ones. This is ad hoc
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// and should not be relied on - in the future we may want the ordering to depend
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// on the page type.
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$roles = array_merge( array_keys( $newSlots ), array_keys( $oldSlots ) );
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$slots = [];
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foreach ( $roles as $role ) {
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$slots[$role] = [
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'old' => isset( $oldSlots[$role] ) ? $oldSlots[$role]->getContent() : null,
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'new' => isset( $newSlots[$role] ) ? $newSlots[$role]->getContent() : null,
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];
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}
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// move main slot to front
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if ( isset( $slots[SlotRecord::MAIN] ) ) {
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$slots = [ SlotRecord::MAIN => $slots[SlotRecord::MAIN] ] + $slots;
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}
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return $slots;
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}
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public function getTitle() {
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// T202454 avoid errors when there is no title
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return parent::getTitle() ?: Title::makeTitle( NS_SPECIAL, 'BadTitle/DifferenceEngine' );
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}
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/**
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* Set reduced line numbers mode.
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* When set, line X is not displayed when X is 1, for example to increase readability and
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* conserve space with many small diffs.
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* @param bool $value
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*/
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public function setReducedLineNumbers( $value = true ) {
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$this->mReducedLineNumbers = $value;
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}
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/**
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* Get the language of the difference engine, defaults to page content language
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*
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* @return Language
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*/
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public function getDiffLang() {
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if ( $this->mDiffLang === null ) {
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# Default language in which the diff text is written.
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$this->mDiffLang = $this->getTitle()->getPageLanguage();
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}
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return $this->mDiffLang;
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}
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/**
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* @return bool
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*/
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public function wasCacheHit() {
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return $this->mCacheHit;
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}
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/**
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* Get the ID of old revision (left pane) of the diff. 0 for the revision
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* previous to getNewid(), false if the old revision does not exist, null
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* if it's unsaved.
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* To get a real revision ID instead of 0, call loadRevisionData() first.
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* @return int|false|null
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*/
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public function getOldid() {
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$this->loadRevisionIds();
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return $this->mOldid;
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}
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/**
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* Get the ID of new revision (right pane) of the diff. 0 for the current revision,
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* false if the new revision does not exist, null if it's unsaved.
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* To get a real revision ID instead of 0, call loadRevisionData() first.
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* @return int|false|null
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*/
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public function getNewid() {
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$this->loadRevisionIds();
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return $this->mNewid;
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}
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/**
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* Get the left side of the diff.
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* Could be null when the first revision of the page is diffed to 'prev' (or in the case of
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* load failure).
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* @return RevisionRecord|null
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*/
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public function getOldRevision() {
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return $this->mOldRev ? $this->mOldRev->getRevisionRecord() : null;
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}
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/**
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* Get the right side of the diff.
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* Should not be null but can still happen in the case of load failure.
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* @return RevisionRecord|null
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*/
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public function getNewRevision() {
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return $this->mNewRev ? $this->mNewRev->getRevisionRecord() : null;
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}
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/**
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* Look up a special:Undelete link to the given deleted revision id,
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* as a workaround for being unable to load deleted diffs in currently.
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*
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* @param int $id Revision ID
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*
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* @return string|bool Link HTML or false
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*/
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public function deletedLink( $id ) {
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$permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
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if ( $permissionManager->userHasRight( $this->getUser(), 'deletedhistory' ) ) {
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$dbr = wfGetDB( DB_REPLICA );
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$arQuery = Revision::getArchiveQueryInfo();
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$row = $dbr->selectRow(
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$arQuery['tables'],
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array_merge( $arQuery['fields'], [ 'ar_namespace', 'ar_title' ] ),
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[ 'ar_rev_id' => $id ],
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__METHOD__,
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[],
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$arQuery['joins']
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);
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if ( $row ) {
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$rev = Revision::newFromArchiveRow( $row );
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$title = Title::makeTitleSafe( $row->ar_namespace, $row->ar_title );
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return SpecialPage::getTitleFor( 'Undelete' )->getFullURL( [
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'target' => $title->getPrefixedText(),
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'timestamp' => $rev->getTimestamp()
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] );
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}
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}
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return false;
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}
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/**
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* Build a wikitext link toward a deleted revision, if viewable.
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*
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* @param int $id Revision ID
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*
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* @return string Wikitext fragment
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*/
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public function deletedIdMarker( $id ) {
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$link = $this->deletedLink( $id );
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if ( $link ) {
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return "[$link $id]";
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} else {
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return (string)$id;
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}
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}
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private function showMissingRevision() {
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$out = $this->getOutput();
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$missing = [];
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if ( $this->mOldRev === null ||
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( $this->mOldRev && $this->mOldContent === null )
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) {
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$missing[] = $this->deletedIdMarker( $this->mOldid );
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}
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if ( $this->mNewRev === null ||
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( $this->mNewRev && $this->mNewContent === null )
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) {
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$missing[] = $this->deletedIdMarker( $this->mNewid );
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}
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$out->setPageTitle( $this->msg( 'errorpagetitle' ) );
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$msg = $this->msg( 'difference-missing-revision' )
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->params( $this->getLanguage()->listToText( $missing ) )
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->numParams( count( $missing ) )
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->parseAsBlock();
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$out->addHTML( $msg );
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}
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public function showDiffPage( $diffOnly = false ) {
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# Allow frames except in certain special cases
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$out = $this->getOutput();
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$out->allowClickjacking();
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$out->setRobotPolicy( 'noindex,nofollow' );
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// Allow extensions to add any extra output here
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Hooks::run( 'DifferenceEngineShowDiffPage', [ $out ] );
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if ( !$this->loadRevisionData() ) {
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if ( Hooks::run( 'DifferenceEngineShowDiffPageMaybeShowMissingRevision', [ $this ] ) ) {
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$this->showMissingRevision();
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}
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return;
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}
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$user = $this->getUser();
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$permErrors = [];
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if ( $this->mNewPage ) {
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$permErrors = $this->mNewPage->getUserPermissionsErrors( 'read', $user );
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}
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if ( $this->mOldPage ) {
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$permErrors = wfMergeErrorArrays( $permErrors,
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$this->mOldPage->getUserPermissionsErrors( 'read', $user ) );
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}
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if ( count( $permErrors ) ) {
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throw new PermissionsError( 'read', $permErrors );
|
|
}
|
|
|
|
$rollback = '';
|
|
|
|
$query = [];
|
|
# Carry over 'diffonly' param via navigation links
|
|
if ( $diffOnly != $user->getBoolOption( 'diffonly' ) ) {
|
|
$query['diffonly'] = $diffOnly;
|
|
}
|
|
# Cascade unhide param in links for easy deletion browsing
|
|
if ( $this->unhide ) {
|
|
$query['unhide'] = 1;
|
|
}
|
|
|
|
# Check if one of the revisions is deleted/suppressed
|
|
$deleted = $suppressed = false;
|
|
$allowed = $this->mNewRev->userCan( RevisionRecord::DELETED_TEXT, $user );
|
|
|
|
$revisionTools = [];
|
|
|
|
# mOldRev is false if the difference engine is called with a "vague" query for
|
|
# a diff between a version V and its previous version V' AND the version V
|
|
# is the first version of that article. In that case, V' does not exist.
|
|
if ( $this->mOldRev === false ) {
|
|
if ( $this->mNewPage ) {
|
|
$out->setPageTitle( $this->msg( 'difference-title', $this->mNewPage->getPrefixedText() ) );
|
|
}
|
|
$samePage = true;
|
|
$oldHeader = '';
|
|
// Allow extensions to change the $oldHeader variable
|
|
Hooks::run( 'DifferenceEngineOldHeaderNoOldRev', [ &$oldHeader ] );
|
|
} else {
|
|
Hooks::run( 'DiffViewHeader', [ $this, $this->mOldRev, $this->mNewRev ] );
|
|
|
|
if ( !$this->mOldPage || !$this->mNewPage ) {
|
|
// XXX say something to the user?
|
|
$samePage = false;
|
|
} elseif ( $this->mNewPage->equals( $this->mOldPage ) ) {
|
|
$out->setPageTitle( $this->msg( 'difference-title', $this->mNewPage->getPrefixedText() ) );
|
|
$samePage = true;
|
|
} else {
|
|
$out->setPageTitle( $this->msg( 'difference-title-multipage',
|
|
$this->mOldPage->getPrefixedText(), $this->mNewPage->getPrefixedText() ) );
|
|
$out->addSubtitle( $this->msg( 'difference-multipage' ) );
|
|
$samePage = false;
|
|
}
|
|
|
|
$permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
|
|
|
|
if ( $samePage && $this->mNewPage && $permissionManager->quickUserCan(
|
|
'edit', $user, $this->mNewPage
|
|
) ) {
|
|
if ( $this->mNewRev->isCurrent() && $permissionManager->quickUserCan(
|
|
'rollback', $user, $this->mNewPage
|
|
) ) {
|
|
$rollbackLink = Linker::generateRollback( $this->mNewRev, $this->getContext(),
|
|
[ 'noBrackets' ] );
|
|
if ( $rollbackLink ) {
|
|
$out->preventClickjacking();
|
|
$rollback = "\u{00A0}\u{00A0}\u{00A0}" . $rollbackLink;
|
|
}
|
|
}
|
|
|
|
if ( $this->userCanEdit( $this->mOldRev ) &&
|
|
$this->userCanEdit( $this->mNewRev )
|
|
) {
|
|
$undoLink = Html::element( 'a', [
|
|
'href' => $this->mNewPage->getLocalURL( [
|
|
'action' => 'edit',
|
|
'undoafter' => $this->mOldid,
|
|
'undo' => $this->mNewid
|
|
] ),
|
|
'title' => Linker::titleAttrib( 'undo' ),
|
|
],
|
|
$this->msg( 'editundo' )->text()
|
|
);
|
|
$revisionTools['mw-diff-undo'] = $undoLink;
|
|
}
|
|
}
|
|
|
|
# Make "previous revision link"
|
|
if ( $samePage && $this->mOldPage && $this->mOldRev->getPrevious() ) {
|
|
$prevlink = Linker::linkKnown(
|
|
$this->mOldPage,
|
|
$this->msg( 'previousdiff' )->escaped(),
|
|
[ 'id' => 'differences-prevlink' ],
|
|
[ 'diff' => 'prev', 'oldid' => $this->mOldid ] + $query
|
|
);
|
|
} else {
|
|
$prevlink = "\u{00A0}";
|
|
}
|
|
|
|
if ( $this->mOldRev->isMinor() ) {
|
|
$oldminor = ChangesList::flag( 'minor' );
|
|
} else {
|
|
$oldminor = '';
|
|
}
|
|
|
|
$ldel = $this->revisionDeleteLink( $this->mOldRev );
|
|
$oldRevisionHeader = $this->getRevisionHeader( $this->mOldRev, 'complete' );
|
|
$oldChangeTags = ChangeTags::formatSummaryRow( $this->mOldTags, 'diff', $this->getContext() );
|
|
|
|
$oldHeader = '<div id="mw-diff-otitle1"><strong>' . $oldRevisionHeader . '</strong></div>' .
|
|
'<div id="mw-diff-otitle2">' .
|
|
Linker::revUserTools( $this->mOldRev, !$this->unhide ) . '</div>' .
|
|
'<div id="mw-diff-otitle3">' . $oldminor .
|
|
Linker::revComment( $this->mOldRev, !$diffOnly, !$this->unhide ) . $ldel . '</div>' .
|
|
'<div id="mw-diff-otitle5">' . $oldChangeTags[0] . '</div>' .
|
|
'<div id="mw-diff-otitle4">' . $prevlink . '</div>';
|
|
|
|
// Allow extensions to change the $oldHeader variable
|
|
Hooks::run( 'DifferenceEngineOldHeader', [ $this, &$oldHeader, $prevlink, $oldminor,
|
|
$diffOnly, $ldel, $this->unhide ] );
|
|
|
|
if ( $this->mOldRev->isDeleted( RevisionRecord::DELETED_TEXT ) ) {
|
|
$deleted = true; // old revisions text is hidden
|
|
if ( $this->mOldRev->isDeleted( RevisionRecord::DELETED_RESTRICTED ) ) {
|
|
$suppressed = true; // also suppressed
|
|
}
|
|
}
|
|
|
|
# Check if this user can see the revisions
|
|
if ( !$this->mOldRev->userCan( RevisionRecord::DELETED_TEXT, $user ) ) {
|
|
$allowed = false;
|
|
}
|
|
}
|
|
|
|
$out->addJsConfigVars( [
|
|
'wgDiffOldId' => $this->mOldid,
|
|
'wgDiffNewId' => $this->mNewid,
|
|
] );
|
|
|
|
# Make "next revision link"
|
|
# Skip next link on the top revision
|
|
if ( $samePage && $this->mNewPage && !$this->mNewRev->isCurrent() ) {
|
|
$nextlink = Linker::linkKnown(
|
|
$this->mNewPage,
|
|
$this->msg( 'nextdiff' )->escaped(),
|
|
[ 'id' => 'differences-nextlink' ],
|
|
[ 'diff' => 'next', 'oldid' => $this->mNewid ] + $query
|
|
);
|
|
} else {
|
|
$nextlink = "\u{00A0}";
|
|
}
|
|
|
|
if ( $this->mNewRev->isMinor() ) {
|
|
$newminor = ChangesList::flag( 'minor' );
|
|
} else {
|
|
$newminor = '';
|
|
}
|
|
|
|
# Handle RevisionDelete links...
|
|
$rdel = $this->revisionDeleteLink( $this->mNewRev );
|
|
|
|
# Allow extensions to define their own revision tools
|
|
Hooks::run( 'DiffRevisionTools',
|
|
[ $this->mNewRev, &$revisionTools, $this->mOldRev, $user ] );
|
|
$formattedRevisionTools = [];
|
|
// Put each one in parentheses (poor man's button)
|
|
foreach ( $revisionTools as $key => $tool ) {
|
|
$toolClass = is_string( $key ) ? $key : 'mw-diff-tool';
|
|
$element = Html::rawElement(
|
|
'span',
|
|
[ 'class' => $toolClass ],
|
|
$this->msg( 'parentheses' )->rawParams( $tool )->escaped()
|
|
);
|
|
$formattedRevisionTools[] = $element;
|
|
}
|
|
$newRevisionHeader = $this->getRevisionHeader( $this->mNewRev, 'complete' ) .
|
|
' ' . implode( ' ', $formattedRevisionTools );
|
|
$newChangeTags = ChangeTags::formatSummaryRow( $this->mNewTags, 'diff', $this->getContext() );
|
|
|
|
$newHeader = '<div id="mw-diff-ntitle1"><strong>' . $newRevisionHeader . '</strong></div>' .
|
|
'<div id="mw-diff-ntitle2">' . Linker::revUserTools( $this->mNewRev, !$this->unhide ) .
|
|
" $rollback</div>" .
|
|
'<div id="mw-diff-ntitle3">' . $newminor .
|
|
Linker::revComment( $this->mNewRev, !$diffOnly, !$this->unhide ) . $rdel . '</div>' .
|
|
'<div id="mw-diff-ntitle5">' . $newChangeTags[0] . '</div>' .
|
|
'<div id="mw-diff-ntitle4">' . $nextlink . $this->markPatrolledLink() . '</div>';
|
|
|
|
// Allow extensions to change the $newHeader variable
|
|
Hooks::run( 'DifferenceEngineNewHeader', [ $this, &$newHeader, $formattedRevisionTools,
|
|
$nextlink, $rollback, $newminor, $diffOnly, $rdel, $this->unhide ] );
|
|
|
|
if ( $this->mNewRev->isDeleted( RevisionRecord::DELETED_TEXT ) ) {
|
|
$deleted = true; // new revisions text is hidden
|
|
if ( $this->mNewRev->isDeleted( RevisionRecord::DELETED_RESTRICTED ) ) {
|
|
$suppressed = true; // also suppressed
|
|
}
|
|
}
|
|
|
|
# If the diff cannot be shown due to a deleted revision, then output
|
|
# the diff header and links to unhide (if available)...
|
|
if ( $deleted && ( !$this->unhide || !$allowed ) ) {
|
|
$this->showDiffStyle();
|
|
$multi = $this->getMultiNotice();
|
|
$out->addHTML( $this->addHeader( '', $oldHeader, $newHeader, $multi ) );
|
|
if ( !$allowed ) {
|
|
$msg = $suppressed ? 'rev-suppressed-no-diff' : 'rev-deleted-no-diff';
|
|
# Give explanation for why revision is not visible
|
|
$out->wrapWikiMsg( "<div id='mw-$msg' class='mw-warning plainlinks'>\n$1\n</div>\n",
|
|
[ $msg ] );
|
|
} else {
|
|
# Give explanation and add a link to view the diff...
|
|
$query = $this->getRequest()->appendQueryValue( 'unhide', '1' );
|
|
$link = $this->getTitle()->getFullURL( $query );
|
|
$msg = $suppressed ? 'rev-suppressed-unhide-diff' : 'rev-deleted-unhide-diff';
|
|
$out->wrapWikiMsg(
|
|
"<div id='mw-$msg' class='mw-warning plainlinks'>\n$1\n</div>\n",
|
|
[ $msg, $link ]
|
|
);
|
|
}
|
|
# Otherwise, output a regular diff...
|
|
} else {
|
|
# Add deletion notice if the user is viewing deleted content
|
|
$notice = '';
|
|
if ( $deleted ) {
|
|
$msg = $suppressed ? 'rev-suppressed-diff-view' : 'rev-deleted-diff-view';
|
|
$notice = "<div id='mw-$msg' class='mw-warning plainlinks'>\n" .
|
|
$this->msg( $msg )->parse() .
|
|
"</div>\n";
|
|
}
|
|
$this->showDiff( $oldHeader, $newHeader, $notice );
|
|
if ( !$diffOnly ) {
|
|
$this->renderNewRevision();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Build a link to mark a change as patrolled.
|
|
*
|
|
* Returns empty string if there's either no revision to patrol or the user is not allowed to.
|
|
* Side effect: When the patrol link is build, this method will call
|
|
* OutputPage::preventClickjacking() and load mediawiki.page.patrol.ajax.
|
|
*
|
|
* @return string HTML or empty string
|
|
*/
|
|
public function markPatrolledLink() {
|
|
if ( $this->mMarkPatrolledLink === null ) {
|
|
$linkInfo = $this->getMarkPatrolledLinkInfo();
|
|
// If false, there is no patrol link needed/allowed
|
|
if ( !$linkInfo || !$this->mNewPage ) {
|
|
$this->mMarkPatrolledLink = '';
|
|
} else {
|
|
$this->mMarkPatrolledLink = ' <span class="patrollink" data-mw="interface">[' .
|
|
Linker::linkKnown(
|
|
$this->mNewPage,
|
|
$this->msg( 'markaspatrolleddiff' )->escaped(),
|
|
[],
|
|
[
|
|
'action' => 'markpatrolled',
|
|
'rcid' => $linkInfo['rcid'],
|
|
]
|
|
) . ']</span>';
|
|
// Allow extensions to change the markpatrolled link
|
|
Hooks::run( 'DifferenceEngineMarkPatrolledLink', [ $this,
|
|
&$this->mMarkPatrolledLink, $linkInfo['rcid'] ] );
|
|
}
|
|
}
|
|
return $this->mMarkPatrolledLink;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of meta data needed to build a "mark as patrolled" link and
|
|
* adds the mediawiki.page.patrol.ajax to the output.
|
|
*
|
|
* @return array|false An array of meta data for a patrol link (rcid only)
|
|
* or false if no link is needed
|
|
*/
|
|
protected function getMarkPatrolledLinkInfo() {
|
|
$user = $this->getUser();
|
|
$config = $this->getConfig();
|
|
$permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
|
|
|
|
// Prepare a change patrol link, if applicable
|
|
if (
|
|
// Is patrolling enabled and the user allowed to?
|
|
$config->get( 'UseRCPatrol' ) &&
|
|
$this->mNewPage &&
|
|
$permissionManager->quickUserCan( 'patrol', $user, $this->mNewPage ) &&
|
|
// Only do this if the revision isn't more than 6 hours older
|
|
// than the Max RC age (6h because the RC might not be cleaned out regularly)
|
|
RecentChange::isInRCLifespan( $this->mNewRev->getTimestamp(), 21600 )
|
|
) {
|
|
// Look for an unpatrolled change corresponding to this diff
|
|
$db = wfGetDB( DB_REPLICA );
|
|
$change = RecentChange::newFromConds(
|
|
[
|
|
'rc_timestamp' => $db->timestamp( $this->mNewRev->getTimestamp() ),
|
|
'rc_this_oldid' => $this->mNewid,
|
|
'rc_patrolled' => RecentChange::PRC_UNPATROLLED
|
|
],
|
|
__METHOD__
|
|
);
|
|
|
|
if ( $change && !$change->getPerformer()->equals( $user ) ) {
|
|
$rcid = $change->getAttribute( 'rc_id' );
|
|
} else {
|
|
// None found or the page has been created by the current user.
|
|
// If the user could patrol this it already would be patrolled
|
|
$rcid = 0;
|
|
}
|
|
|
|
// Allow extensions to possibly change the rcid here
|
|
// For example the rcid might be set to zero due to the user
|
|
// being the same as the performer of the change but an extension
|
|
// might still want to show it under certain conditions
|
|
Hooks::run( 'DifferenceEngineMarkPatrolledRCID', [ &$rcid, $this, $change, $user ] );
|
|
|
|
// Build the link
|
|
if ( $rcid ) {
|
|
$this->getOutput()->preventClickjacking();
|
|
if ( $permissionManager->userHasRight( $user, 'writeapi' ) ) {
|
|
$this->getOutput()->addModules( 'mediawiki.page.patrol.ajax' );
|
|
}
|
|
|
|
return [
|
|
'rcid' => $rcid,
|
|
];
|
|
}
|
|
}
|
|
|
|
// No mark as patrolled link applicable
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param Revision $rev
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function revisionDeleteLink( $rev ) {
|
|
$link = Linker::getRevDeleteLink( $this->getUser(), $rev, $rev->getTitle() );
|
|
if ( $link !== '' ) {
|
|
$link = "\u{00A0}\u{00A0}\u{00A0}" . $link . ' ';
|
|
}
|
|
|
|
return $link;
|
|
}
|
|
|
|
/**
|
|
* Show the new revision of the page.
|
|
*
|
|
* @note Not supported after calling setContent().
|
|
*/
|
|
public function renderNewRevision() {
|
|
if ( $this->isContentOverridden ) {
|
|
// The code below only works with a Revision object. We could construct a fake revision
|
|
// (here or in setContent), but since this does not seem needed at the moment,
|
|
// we'll just fail for now.
|
|
throw new LogicException(
|
|
__METHOD__
|
|
. ' is not supported after calling setContent(). Use setRevisions() instead.'
|
|
);
|
|
}
|
|
|
|
$out = $this->getOutput();
|
|
$revHeader = $this->getRevisionHeader( $this->mNewRev );
|
|
# Add "current version as of X" title
|
|
$out->addHTML( "<hr class='diff-hr' id='mw-oldid' />
|
|
<h2 class='diff-currentversion-title'>{$revHeader}</h2>\n" );
|
|
# Page content may be handled by a hooked call instead...
|
|
if ( Hooks::run( 'ArticleContentOnDiff', [ $this, $out ] ) ) {
|
|
$this->loadNewText();
|
|
if ( !$this->mNewPage ) {
|
|
// New revision is unsaved; bail out.
|
|
// TODO in theory rendering the new revision is a meaningful thing to do
|
|
// even if it's unsaved, but a lot of untangling is required to do it safely.
|
|
return;
|
|
}
|
|
|
|
$out->setRevisionId( $this->mNewid );
|
|
$out->setRevisionTimestamp( $this->mNewRev->getTimestamp() );
|
|
$out->setArticleFlag( true );
|
|
|
|
if ( !Hooks::run( 'ArticleRevisionViewCustom',
|
|
[ $this->mNewRev->getRevisionRecord(), $this->mNewPage, $out ] )
|
|
) {
|
|
// Handled by extension
|
|
// NOTE: sync with hooks called in Article::view()
|
|
} elseif ( !Hooks::run( 'ArticleContentViewCustom',
|
|
[ $this->mNewContent, $this->mNewPage, $out ], '1.32' )
|
|
) {
|
|
// Handled by extension
|
|
// NOTE: sync with hooks called in Article::view()
|
|
} else {
|
|
// Normal page
|
|
if ( $this->getTitle()->equals( $this->mNewPage ) ) {
|
|
// If the Title stored in the context is the same as the one
|
|
// of the new revision, we can use its associated WikiPage
|
|
// object.
|
|
$wikiPage = $this->getWikiPage();
|
|
} else {
|
|
// Otherwise we need to create our own WikiPage object
|
|
$wikiPage = WikiPage::factory( $this->mNewPage );
|
|
}
|
|
|
|
$parserOutput = $this->getParserOutput( $wikiPage, $this->mNewRev );
|
|
|
|
# WikiPage::getParserOutput() should not return false, but just in case
|
|
if ( $parserOutput ) {
|
|
// Allow extensions to change parser output here
|
|
if ( Hooks::run( 'DifferenceEngineRenderRevisionAddParserOutput',
|
|
[ $this, $out, $parserOutput, $wikiPage ] )
|
|
) {
|
|
$out->addParserOutput( $parserOutput, [
|
|
'enableSectionEditLinks' => $this->mNewRev->isCurrent()
|
|
&& MediaWikiServices::getInstance()->getPermissionManager()->quickUserCan(
|
|
'edit',
|
|
$this->getUser(),
|
|
$this->mNewRev->getTitle()
|
|
)
|
|
] );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Allow extensions to optionally not show the final patrolled link
|
|
if ( Hooks::run( 'DifferenceEngineRenderRevisionShowFinalPatrolLink' ) ) {
|
|
# Add redundant patrol link on bottom...
|
|
$out->addHTML( $this->markPatrolledLink() );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param WikiPage $page
|
|
* @param Revision $rev
|
|
*
|
|
* @return ParserOutput|bool False if the revision was not found
|
|
*/
|
|
protected function getParserOutput( WikiPage $page, Revision $rev ) {
|
|
if ( !$rev->getId() ) {
|
|
// WikiPage::getParserOutput wants a revision ID. Passing 0 will incorrectly show
|
|
// the current revision, so fail instead. If need be, WikiPage::getParserOutput
|
|
// could be made to accept a Revision or RevisionRecord instead of the id.
|
|
return false;
|
|
}
|
|
|
|
$parserOptions = $page->makeParserOptions( $this->getContext() );
|
|
$parserOutput = $page->getParserOutput( $parserOptions, $rev->getId() );
|
|
|
|
return $parserOutput;
|
|
}
|
|
|
|
/**
|
|
* Get the diff text, send it to the OutputPage object
|
|
* Returns false if the diff could not be generated, otherwise returns true
|
|
*
|
|
* @param string|bool $otitle Header for old text or false
|
|
* @param string|bool $ntitle Header for new text or false
|
|
* @param string $notice HTML between diff header and body
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function showDiff( $otitle, $ntitle, $notice = '' ) {
|
|
// Allow extensions to affect the output here
|
|
Hooks::run( 'DifferenceEngineShowDiff', [ $this ] );
|
|
|
|
$diff = $this->getDiff( $otitle, $ntitle, $notice );
|
|
if ( $diff === false ) {
|
|
$this->showMissingRevision();
|
|
|
|
return false;
|
|
} else {
|
|
$this->showDiffStyle();
|
|
$this->getOutput()->addHTML( $diff );
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add style sheets for diff display.
|
|
*/
|
|
public function showDiffStyle() {
|
|
if ( !$this->isSlotDiffRenderer ) {
|
|
$this->getOutput()->addModuleStyles( [
|
|
'mediawiki.interface.helpers.styles',
|
|
'mediawiki.diff.styles'
|
|
] );
|
|
foreach ( $this->getSlotDiffRenderers() as $slotDiffRenderer ) {
|
|
$slotDiffRenderer->addModules( $this->getOutput() );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get complete diff table, including header
|
|
*
|
|
* @param string|bool $otitle Header for old text or false
|
|
* @param string|bool $ntitle Header for new text or false
|
|
* @param string $notice HTML between diff header and body
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function getDiff( $otitle, $ntitle, $notice = '' ) {
|
|
$body = $this->getDiffBody();
|
|
if ( $body === false ) {
|
|
return false;
|
|
}
|
|
|
|
$multi = $this->getMultiNotice();
|
|
// Display a message when the diff is empty
|
|
if ( $body === '' ) {
|
|
$notice .= '<div class="mw-diff-empty">' .
|
|
$this->msg( 'diff-empty' )->parse() .
|
|
"</div>\n";
|
|
}
|
|
|
|
return $this->addHeader( $body, $otitle, $ntitle, $multi, $notice );
|
|
}
|
|
|
|
/**
|
|
* Get the diff table body, without header
|
|
*
|
|
* @return mixed (string/false)
|
|
*/
|
|
public function getDiffBody() {
|
|
$this->mCacheHit = true;
|
|
// Check if the diff should be hidden from this user
|
|
if ( !$this->isContentOverridden ) {
|
|
if ( !$this->loadRevisionData() ) {
|
|
return false;
|
|
} elseif ( $this->mOldRev &&
|
|
!$this->mOldRev->userCan( RevisionRecord::DELETED_TEXT, $this->getUser() )
|
|
) {
|
|
return false;
|
|
} elseif ( $this->mNewRev &&
|
|
!$this->mNewRev->userCan( RevisionRecord::DELETED_TEXT, $this->getUser() )
|
|
) {
|
|
return false;
|
|
}
|
|
// Short-circuit
|
|
if ( $this->mOldRev === false || ( $this->mOldRev && $this->mNewRev &&
|
|
$this->mOldRev->getId() && $this->mOldRev->getId() == $this->mNewRev->getId() )
|
|
) {
|
|
if ( Hooks::run( 'DifferenceEngineShowEmptyOldContent', [ $this ] ) ) {
|
|
return '';
|
|
}
|
|
}
|
|
}
|
|
|
|
// Cacheable?
|
|
$key = false;
|
|
$cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
|
|
if ( $this->mOldid && $this->mNewid ) {
|
|
// Check if subclass is still using the old way
|
|
// for backwards-compatibility
|
|
$key = $this->getDiffBodyCacheKey();
|
|
if ( $key === null ) {
|
|
$key = $cache->makeKey( ...$this->getDiffBodyCacheKeyParams() );
|
|
}
|
|
|
|
// Try cache
|
|
if ( !$this->mRefreshCache ) {
|
|
$difftext = $cache->get( $key );
|
|
if ( is_string( $difftext ) ) {
|
|
wfIncrStats( 'diff_cache.hit' );
|
|
$difftext = $this->localiseDiff( $difftext );
|
|
$difftext .= "\n<!-- diff cache key $key -->\n";
|
|
|
|
return $difftext;
|
|
}
|
|
} // don't try to load but save the result
|
|
}
|
|
$this->mCacheHit = false;
|
|
|
|
// Loadtext is permission safe, this just clears out the diff
|
|
if ( !$this->loadText() ) {
|
|
return false;
|
|
}
|
|
|
|
$difftext = '';
|
|
// We've checked for revdelete at the beginning of this method; it's OK to ignore
|
|
// read permissions here.
|
|
$slotContents = $this->getSlotContents();
|
|
foreach ( $this->getSlotDiffRenderers() as $role => $slotDiffRenderer ) {
|
|
$slotDiff = $slotDiffRenderer->getDiff( $slotContents[$role]['old'],
|
|
$slotContents[$role]['new'] );
|
|
if ( $slotDiff && $role !== SlotRecord::MAIN ) {
|
|
// FIXME: ask SlotRoleHandler::getSlotNameMessage
|
|
$slotTitle = $role;
|
|
$difftext .= $this->getSlotHeader( $slotTitle );
|
|
}
|
|
$difftext .= $slotDiff;
|
|
}
|
|
|
|
// Avoid PHP 7.1 warning from passing $this by reference
|
|
$diffEngine = $this;
|
|
|
|
// Save to cache for 7 days
|
|
if ( !Hooks::run( 'AbortDiffCache', [ &$diffEngine ] ) ) {
|
|
wfIncrStats( 'diff_cache.uncacheable' );
|
|
} elseif ( $key !== false && $difftext !== false ) {
|
|
wfIncrStats( 'diff_cache.miss' );
|
|
$cache->set( $key, $difftext, 7 * 86400 );
|
|
} else {
|
|
wfIncrStats( 'diff_cache.uncacheable' );
|
|
}
|
|
// localise line numbers and title attribute text
|
|
if ( $difftext !== false ) {
|
|
$difftext = $this->localiseDiff( $difftext );
|
|
}
|
|
|
|
return $difftext;
|
|
}
|
|
|
|
/**
|
|
* Get the diff table body for one slot, without header
|
|
*
|
|
* @param string $role
|
|
* @return string|false
|
|
*/
|
|
public function getDiffBodyForRole( $role ) {
|
|
$diffRenderers = $this->getSlotDiffRenderers();
|
|
if ( !isset( $diffRenderers[$role] ) ) {
|
|
return false;
|
|
}
|
|
|
|
$slotContents = $this->getSlotContents();
|
|
$slotDiff = $diffRenderers[$role]->getDiff( $slotContents[$role]['old'],
|
|
$slotContents[$role]['new'] );
|
|
if ( !$slotDiff ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $role !== SlotRecord::MAIN ) {
|
|
// TODO use human-readable role name at least
|
|
$slotTitle = $role;
|
|
$slotDiff = $this->getSlotHeader( $slotTitle ) . $slotDiff;
|
|
}
|
|
|
|
return $this->localiseDiff( $slotDiff );
|
|
}
|
|
|
|
/**
|
|
* Get a slot header for inclusion in a diff body (as a table row).
|
|
*
|
|
* @param string $headerText The text of the header
|
|
* @return string
|
|
*
|
|
*/
|
|
protected function getSlotHeader( $headerText ) {
|
|
// The old revision is missing on oldid=<first>&diff=prev; only 2 columns in that case.
|
|
$columnCount = $this->mOldRev ? 4 : 2;
|
|
$userLang = $this->getLanguage()->getHtmlCode();
|
|
return Html::rawElement( 'tr', [ 'class' => 'mw-diff-slot-header', 'lang' => $userLang ],
|
|
Html::element( 'th', [ 'colspan' => $columnCount ], $headerText ) );
|
|
}
|
|
|
|
/**
|
|
* Returns the cache key for diff body text or content.
|
|
*
|
|
* @deprecated since 1.31, use getDiffBodyCacheKeyParams() instead
|
|
* @since 1.23
|
|
*
|
|
* @throws MWException
|
|
* @return string|null
|
|
*/
|
|
protected function getDiffBodyCacheKey() {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get the cache key parameters
|
|
*
|
|
* Subclasses can replace the first element in the array to something
|
|
* more specific to the type of diff (e.g. "inline-diff"), or append
|
|
* if the cache should vary on more things. Overriding entirely should
|
|
* be avoided.
|
|
*
|
|
* @since 1.31
|
|
*
|
|
* @return array
|
|
* @throws MWException
|
|
*/
|
|
protected function getDiffBodyCacheKeyParams() {
|
|
if ( !$this->mOldid || !$this->mNewid ) {
|
|
throw new MWException( 'mOldid and mNewid must be set to get diff cache key.' );
|
|
}
|
|
|
|
$engine = $this->getEngine();
|
|
$params = [
|
|
'diff',
|
|
$engine,
|
|
self::DIFF_VERSION,
|
|
"old-{$this->mOldid}",
|
|
"rev-{$this->mNewid}"
|
|
];
|
|
|
|
if ( $engine === 'wikidiff2' ) {
|
|
$params[] = phpversion( 'wikidiff2' );
|
|
}
|
|
|
|
if ( !$this->isSlotDiffRenderer ) {
|
|
foreach ( $this->getSlotDiffRenderers() as $slotDiffRenderer ) {
|
|
$params = array_merge( $params, $slotDiffRenderer->getExtraCacheKeys() );
|
|
}
|
|
}
|
|
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* Implements DifferenceEngineSlotDiffRenderer::getExtraCacheKeys(). Only used when
|
|
* DifferenceEngine is wrapped in DifferenceEngineSlotDiffRenderer.
|
|
* @return array
|
|
* @internal for use by DifferenceEngineSlotDiffRenderer only
|
|
* @deprecated
|
|
*/
|
|
public function getExtraCacheKeys() {
|
|
// This method is called when the DifferenceEngine is used for a slot diff. We only care
|
|
// about special things, not the revision IDs, which are added to the cache key by the
|
|
// page-level DifferenceEngine, and which might not have a valid value for this object.
|
|
$this->mOldid = 123456789;
|
|
$this->mNewid = 987654321;
|
|
|
|
// This will repeat a bunch of unnecessary key fields for each slot. Not nice but harmless.
|
|
$cacheString = $this->getDiffBodyCacheKey();
|
|
if ( $cacheString ) {
|
|
return [ $cacheString ];
|
|
}
|
|
|
|
$params = $this->getDiffBodyCacheKeyParams();
|
|
|
|
// Try to get rid of the standard keys to keep the cache key human-readable:
|
|
// call the getDiffBodyCacheKeyParams implementation of the base class, and if
|
|
// the child class includes the same keys, drop them.
|
|
// Uses an obscure PHP feature where static calls to non-static methods are allowed
|
|
// as long as we are already in a non-static method of the same class, and the call context
|
|
// ($this) will be inherited.
|
|
// phpcs:ignore Squiz.Classes.SelfMemberReference.NotUsed
|
|
$standardParams = DifferenceEngine::getDiffBodyCacheKeyParams();
|
|
if ( array_slice( $params, 0, count( $standardParams ) ) === $standardParams ) {
|
|
$params = array_slice( $params, count( $standardParams ) );
|
|
}
|
|
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* Generate a diff, no caching.
|
|
*
|
|
* @since 1.21
|
|
*
|
|
* @param Content $old Old content
|
|
* @param Content $new New content
|
|
*
|
|
* @throws Exception If old or new content is not an instance of TextContent.
|
|
* @return bool|string
|
|
*
|
|
* @deprecated since 1.32, use a SlotDiffRenderer instead.
|
|
*/
|
|
public function generateContentDiffBody( Content $old, Content $new ) {
|
|
$slotDiffRenderer = $new->getContentHandler()->getSlotDiffRenderer( $this->getContext() );
|
|
if (
|
|
$slotDiffRenderer instanceof DifferenceEngineSlotDiffRenderer
|
|
&& $this->isSlotDiffRenderer
|
|
) {
|
|
// Oops, we are just about to enter an infinite loop (the slot-level DifferenceEngine
|
|
// called a DifferenceEngineSlotDiffRenderer that wraps the same DifferenceEngine class).
|
|
// This will happen when a content model has no custom slot diff renderer, it does have
|
|
// a custom difference engine, but that does not override this method.
|
|
throw new Exception( get_class( $this ) . ': could not maintain backwards compatibility. '
|
|
. 'Please use a SlotDiffRenderer.' );
|
|
}
|
|
return $slotDiffRenderer->getDiff( $old, $new ) . $this->getDebugString();
|
|
}
|
|
|
|
/**
|
|
* Generate a diff, no caching
|
|
*
|
|
* @param string $otext Old text, must be already segmented
|
|
* @param string $ntext New text, must be already segmented
|
|
*
|
|
* @throws Exception If content handling for text content is configured in a way
|
|
* that makes maintaining B/C hard.
|
|
* @return bool|string
|
|
*
|
|
* @deprecated since 1.32, use a TextSlotDiffRenderer instead.
|
|
*/
|
|
public function generateTextDiffBody( $otext, $ntext ) {
|
|
$slotDiffRenderer = ContentHandler::getForModelID( CONTENT_MODEL_TEXT )
|
|
->getSlotDiffRenderer( $this->getContext() );
|
|
if ( !( $slotDiffRenderer instanceof TextSlotDiffRenderer ) ) {
|
|
// Someone used the GetSlotDiffRenderer hook to replace the renderer.
|
|
// This is too unlikely to happen to bother handling properly.
|
|
throw new Exception( 'The slot diff renderer for text content should be a '
|
|
. 'TextSlotDiffRenderer subclass' );
|
|
}
|
|
return $slotDiffRenderer->getTextDiff( $otext, $ntext ) . $this->getDebugString();
|
|
}
|
|
|
|
/**
|
|
* Process ExternalDiffEngine config and get a sane, usable engine
|
|
*
|
|
* @return bool|string 'wikidiff2', path to an executable, or false
|
|
* @internal For use by this class and TextSlotDiffRenderer only.
|
|
*/
|
|
public static function getEngine() {
|
|
$externalDiffEngine = MediaWikiServices::getInstance()->getMainConfig()
|
|
->get( 'ExternalDiffEngine' );
|
|
|
|
if ( $externalDiffEngine ) {
|
|
if ( is_string( $externalDiffEngine ) ) {
|
|
if ( is_executable( $externalDiffEngine ) ) {
|
|
return $externalDiffEngine;
|
|
}
|
|
wfDebug( 'ExternalDiffEngine config points to a non-executable, ignoring' );
|
|
} else {
|
|
wfWarn( 'ExternalDiffEngine config is set to a non-string value, ignoring' );
|
|
}
|
|
}
|
|
|
|
if ( function_exists( 'wikidiff2_do_diff' ) ) {
|
|
return 'wikidiff2';
|
|
}
|
|
|
|
// Native PHP
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Generates diff, to be wrapped internally in a logging/instrumentation
|
|
*
|
|
* @param string $otext Old text, must be already segmented
|
|
* @param string $ntext New text, must be already segmented
|
|
*
|
|
* @throws Exception If content handling for text content is configured in a way
|
|
* that makes maintaining B/C hard.
|
|
* @return bool|string
|
|
*
|
|
* @deprecated since 1.32, use a TextSlotDiffRenderer instead.
|
|
*/
|
|
protected function textDiff( $otext, $ntext ) {
|
|
$slotDiffRenderer = ContentHandler::getForModelID( CONTENT_MODEL_TEXT )
|
|
->getSlotDiffRenderer( $this->getContext() );
|
|
if ( !( $slotDiffRenderer instanceof TextSlotDiffRenderer ) ) {
|
|
// Someone used the GetSlotDiffRenderer hook to replace the renderer.
|
|
// This is too unlikely to happen to bother handling properly.
|
|
throw new Exception( 'The slot diff renderer for text content should be a '
|
|
. 'TextSlotDiffRenderer subclass' );
|
|
}
|
|
return $slotDiffRenderer->getTextDiff( $otext, $ntext ) . $this->getDebugString();
|
|
}
|
|
|
|
/**
|
|
* Generate a debug comment indicating diff generating time,
|
|
* server node, and generator backend.
|
|
*
|
|
* @param string $generator : What diff engine was used
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function debug( $generator = "internal" ) {
|
|
if ( !$this->enableDebugComment ) {
|
|
return '';
|
|
}
|
|
$data = [ $generator ];
|
|
if ( $this->getConfig()->get( 'ShowHostnames' ) ) {
|
|
$data[] = wfHostname();
|
|
}
|
|
$data[] = wfTimestamp( TS_DB );
|
|
|
|
return "<!-- diff generator: " .
|
|
implode( " ", array_map( "htmlspecialchars", $data ) ) .
|
|
" -->\n";
|
|
}
|
|
|
|
private function getDebugString() {
|
|
$engine = self::getEngine();
|
|
if ( $engine === 'wikidiff2' ) {
|
|
return $this->debug( 'wikidiff2' );
|
|
} elseif ( $engine === false ) {
|
|
return $this->debug( 'native PHP' );
|
|
} else {
|
|
return $this->debug( "external $engine" );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Localise diff output
|
|
*
|
|
* @param string $text
|
|
* @return string
|
|
*/
|
|
private function localiseDiff( $text ) {
|
|
$text = $this->localiseLineNumbers( $text );
|
|
if ( $this->getEngine() === 'wikidiff2' &&
|
|
version_compare( phpversion( 'wikidiff2' ), '1.5.1', '>=' )
|
|
) {
|
|
$text = $this->addLocalisedTitleTooltips( $text );
|
|
}
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* Replace line numbers with the text in the user's language
|
|
*
|
|
* @param string $text
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function localiseLineNumbers( $text ) {
|
|
return preg_replace_callback(
|
|
'/<!--LINE (\d+)-->/',
|
|
[ $this, 'localiseLineNumbersCb' ],
|
|
$text
|
|
);
|
|
}
|
|
|
|
public function localiseLineNumbersCb( $matches ) {
|
|
if ( $matches[1] === '1' && $this->mReducedLineNumbers ) {
|
|
return '';
|
|
}
|
|
|
|
return $this->msg( 'lineno' )->numParams( $matches[1] )->escaped();
|
|
}
|
|
|
|
/**
|
|
* Add title attributes for tooltips on moved paragraph indicators
|
|
*
|
|
* @param string $text
|
|
* @return string
|
|
*/
|
|
private function addLocalisedTitleTooltips( $text ) {
|
|
return preg_replace_callback(
|
|
'/class="mw-diff-movedpara-(left|right)"/',
|
|
[ $this, 'addLocalisedTitleTooltipsCb' ],
|
|
$text
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param array $matches
|
|
* @return string
|
|
*/
|
|
private function addLocalisedTitleTooltipsCb( array $matches ) {
|
|
$key = $matches[1] === 'right' ?
|
|
'diff-paragraph-moved-toold' :
|
|
'diff-paragraph-moved-tonew';
|
|
return $matches[0] . ' title="' . $this->msg( $key )->escaped() . '"';
|
|
}
|
|
|
|
/**
|
|
* If there are revisions between the ones being compared, return a note saying so.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getMultiNotice() {
|
|
// The notice only make sense if we are diffing two saved revisions of the same page.
|
|
if (
|
|
!$this->mOldRev || !$this->mNewRev
|
|
|| !$this->mOldPage || !$this->mNewPage
|
|
|| !$this->mOldPage->equals( $this->mNewPage )
|
|
) {
|
|
return '';
|
|
}
|
|
|
|
if ( $this->mOldRev->getTimestamp() > $this->mNewRev->getTimestamp() ) {
|
|
$oldRev = $this->mNewRev; // flip
|
|
$newRev = $this->mOldRev; // flip
|
|
} else { // normal case
|
|
$oldRev = $this->mOldRev;
|
|
$newRev = $this->mNewRev;
|
|
}
|
|
|
|
// Sanity: don't show the notice if too many rows must be scanned
|
|
// @todo show some special message for that case
|
|
$nEdits = $this->mNewPage->countRevisionsBetween( $oldRev, $newRev, 1000 );
|
|
if ( $nEdits > 0 && $nEdits <= 1000 ) {
|
|
$limit = 100; // use diff-multi-manyusers if too many users
|
|
$users = $this->mNewPage->getAuthorsBetween( $oldRev, $newRev, $limit );
|
|
$numUsers = count( $users );
|
|
|
|
if ( $numUsers == 1 && $users[0] == $newRev->getUserText( RevisionRecord::RAW ) ) {
|
|
$numUsers = 0; // special case to say "by the same user" instead of "by one other user"
|
|
}
|
|
|
|
return self::intermediateEditsMsg( $nEdits, $numUsers, $limit );
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Get a notice about how many intermediate edits and users there are
|
|
*
|
|
* @param int $numEdits
|
|
* @param int $numUsers
|
|
* @param int $limit
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function intermediateEditsMsg( $numEdits, $numUsers, $limit ) {
|
|
if ( $numUsers === 0 ) {
|
|
$msg = 'diff-multi-sameuser';
|
|
} elseif ( $numUsers > $limit ) {
|
|
$msg = 'diff-multi-manyusers';
|
|
$numUsers = $limit;
|
|
} else {
|
|
$msg = 'diff-multi-otherusers';
|
|
}
|
|
|
|
return wfMessage( $msg )->numParams( $numEdits, $numUsers )->parse();
|
|
}
|
|
|
|
/**
|
|
* @param Revision $rev
|
|
* @return bool whether the user can see and edit the revision.
|
|
*/
|
|
private function userCanEdit( Revision $rev ) {
|
|
$user = $this->getUser();
|
|
|
|
if ( !$rev->userCan( RevisionRecord::DELETED_TEXT, $user ) ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get a header for a specified revision.
|
|
*
|
|
* @param Revision $rev
|
|
* @param string $complete 'complete' to get the header wrapped depending
|
|
* the visibility of the revision and a link to edit the page.
|
|
*
|
|
* @return string HTML fragment
|
|
*/
|
|
public function getRevisionHeader( Revision $rev, $complete = '' ) {
|
|
$lang = $this->getLanguage();
|
|
$user = $this->getUser();
|
|
$revtimestamp = $rev->getTimestamp();
|
|
$timestamp = $lang->userTimeAndDate( $revtimestamp, $user );
|
|
$dateofrev = $lang->userDate( $revtimestamp, $user );
|
|
$timeofrev = $lang->userTime( $revtimestamp, $user );
|
|
|
|
$header = $this->msg(
|
|
$rev->isCurrent() ? 'currentrev-asof' : 'revisionasof',
|
|
$timestamp,
|
|
$dateofrev,
|
|
$timeofrev
|
|
)->escaped();
|
|
|
|
if ( $complete !== 'complete' ) {
|
|
return $header;
|
|
}
|
|
|
|
$title = $rev->getTitle();
|
|
|
|
$header = Linker::linkKnown( $title, $header, [],
|
|
[ 'oldid' => $rev->getId() ] );
|
|
|
|
if ( $this->userCanEdit( $rev ) ) {
|
|
$editQuery = [ 'action' => 'edit' ];
|
|
if ( !$rev->isCurrent() ) {
|
|
$editQuery['oldid'] = $rev->getId();
|
|
}
|
|
|
|
$key = MediaWikiServices::getInstance()->getPermissionManager()
|
|
->quickUserCan( 'edit', $user, $title ) ? 'editold' : 'viewsourceold';
|
|
$msg = $this->msg( $key )->escaped();
|
|
$editLink = $this->msg( 'parentheses' )->rawParams(
|
|
Linker::linkKnown( $title, $msg, [], $editQuery ) )->escaped();
|
|
$header .= ' ' . Html::rawElement(
|
|
'span',
|
|
[ 'class' => 'mw-diff-edit' ],
|
|
$editLink
|
|
);
|
|
if ( $rev->isDeleted( RevisionRecord::DELETED_TEXT ) ) {
|
|
$header = Html::rawElement(
|
|
'span',
|
|
[ 'class' => 'history-deleted' ],
|
|
$header
|
|
);
|
|
}
|
|
} else {
|
|
$header = Html::rawElement( 'span', [ 'class' => 'history-deleted' ], $header );
|
|
}
|
|
|
|
return $header;
|
|
}
|
|
|
|
/**
|
|
* Add the header to a diff body
|
|
*
|
|
* @param string $diff Diff body
|
|
* @param string $otitle Old revision header
|
|
* @param string $ntitle New revision header
|
|
* @param string $multi Notice telling user that there are intermediate
|
|
* revisions between the ones being compared
|
|
* @param string $notice Other notices, e.g. that user is viewing deleted content
|
|
*
|
|
* @return string
|
|
*/
|
|
public function addHeader( $diff, $otitle, $ntitle, $multi = '', $notice = '' ) {
|
|
// shared.css sets diff in interface language/dir, but the actual content
|
|
// is often in a different language, mostly the page content language/dir
|
|
$header = Html::openElement( 'table', [
|
|
'class' => [ 'diff', 'diff-contentalign-' . $this->getDiffLang()->alignStart() ],
|
|
'data-mw' => 'interface',
|
|
] );
|
|
$userLang = htmlspecialchars( $this->getLanguage()->getHtmlCode() );
|
|
|
|
if ( !$diff && !$otitle ) {
|
|
$header .= "
|
|
<tr class=\"diff-title\" lang=\"{$userLang}\">
|
|
<td class=\"diff-ntitle\">{$ntitle}</td>
|
|
</tr>";
|
|
$multiColspan = 1;
|
|
} else {
|
|
if ( $diff ) { // Safari/Chrome show broken output if cols not used
|
|
$header .= "
|
|
<col class=\"diff-marker\" />
|
|
<col class=\"diff-content\" />
|
|
<col class=\"diff-marker\" />
|
|
<col class=\"diff-content\" />";
|
|
$colspan = 2;
|
|
$multiColspan = 4;
|
|
} else {
|
|
$colspan = 1;
|
|
$multiColspan = 2;
|
|
}
|
|
if ( $otitle || $ntitle ) {
|
|
$header .= "
|
|
<tr class=\"diff-title\" lang=\"{$userLang}\">
|
|
<td colspan=\"$colspan\" class=\"diff-otitle\">{$otitle}</td>
|
|
<td colspan=\"$colspan\" class=\"diff-ntitle\">{$ntitle}</td>
|
|
</tr>";
|
|
}
|
|
}
|
|
|
|
if ( $multi != '' ) {
|
|
$header .= "<tr><td colspan=\"{$multiColspan}\" " .
|
|
"class=\"diff-multi\" lang=\"{$userLang}\">{$multi}</td></tr>";
|
|
}
|
|
if ( $notice != '' ) {
|
|
$header .= "<tr><td colspan=\"{$multiColspan}\" " .
|
|
"class=\"diff-notice\" lang=\"{$userLang}\">{$notice}</td></tr>";
|
|
}
|
|
|
|
return $header . $diff . "</table>";
|
|
}
|
|
|
|
/**
|
|
* Use specified text instead of loading from the database
|
|
* @param Content $oldContent
|
|
* @param Content $newContent
|
|
* @since 1.21
|
|
* @deprecated since 1.32, use setRevisions or ContentHandler::getSlotDiffRenderer.
|
|
*/
|
|
public function setContent( Content $oldContent, Content $newContent ) {
|
|
$this->mOldContent = $oldContent;
|
|
$this->mNewContent = $newContent;
|
|
|
|
$this->mTextLoaded = 2;
|
|
$this->mRevisionsLoaded = true;
|
|
$this->isContentOverridden = true;
|
|
$this->slotDiffRenderers = null;
|
|
}
|
|
|
|
/**
|
|
* Use specified text instead of loading from the database.
|
|
* @param RevisionRecord|null $oldRevision
|
|
* @param RevisionRecord $newRevision
|
|
*/
|
|
public function setRevisions(
|
|
?RevisionRecord $oldRevision, RevisionRecord $newRevision
|
|
) {
|
|
if ( $oldRevision ) {
|
|
$this->mOldRev = new Revision( $oldRevision );
|
|
$this->mOldid = $oldRevision->getId();
|
|
$this->mOldPage = Title::newFromLinkTarget( $oldRevision->getPageAsLinkTarget() );
|
|
// This method is meant for edit diffs and such so there is no reason to provide a
|
|
// revision that's not readable to the user, but check it just in case.
|
|
$this->mOldContent = $oldRevision->getContent( SlotRecord::MAIN,
|
|
RevisionRecord::FOR_THIS_USER, $this->getUser() );
|
|
} else {
|
|
$this->mOldPage = null;
|
|
$this->mOldRev = $this->mOldid = false;
|
|
}
|
|
$this->mNewRev = new Revision( $newRevision );
|
|
$this->mNewid = $newRevision->getId();
|
|
$this->mNewPage = Title::newFromLinkTarget( $newRevision->getPageAsLinkTarget() );
|
|
$this->mNewContent = $newRevision->getContent( SlotRecord::MAIN,
|
|
RevisionRecord::FOR_THIS_USER, $this->getUser() );
|
|
|
|
$this->mRevisionsIdsLoaded = $this->mRevisionsLoaded = true;
|
|
$this->mTextLoaded = $oldRevision ? 2 : 1;
|
|
$this->isContentOverridden = false;
|
|
$this->slotDiffRenderers = null;
|
|
}
|
|
|
|
/**
|
|
* Set the language in which the diff text is written
|
|
*
|
|
* @param Language $lang
|
|
* @since 1.19
|
|
*/
|
|
public function setTextLanguage( Language $lang ) {
|
|
$this->mDiffLang = $lang;
|
|
}
|
|
|
|
/**
|
|
* Maps a revision pair definition as accepted by DifferenceEngine constructor
|
|
* to a pair of actual integers representing revision ids.
|
|
*
|
|
* @param int $old Revision id, e.g. from URL parameter 'oldid'
|
|
* @param int|string $new Revision id or strings 'next' or 'prev', e.g. from URL parameter 'diff'
|
|
*
|
|
* @return array List of two revision ids, older first, later second.
|
|
* Zero signifies invalid argument passed.
|
|
* false signifies that there is no previous/next revision ($old is the oldest/newest one).
|
|
*/
|
|
public function mapDiffPrevNext( $old, $new ) {
|
|
$rl = MediaWikiServices::getInstance()->getRevisionLookup();
|
|
if ( $new === 'prev' ) {
|
|
// Show diff between revision $old and the previous one. Get previous one from DB.
|
|
$newid = intval( $old );
|
|
$oldid = false;
|
|
$newRev = $rl->getRevisionById( $newid );
|
|
if ( $newRev ) {
|
|
$oldRev = $rl->getPreviousRevision( $newRev );
|
|
if ( $oldRev ) {
|
|
$oldid = $oldRev->getId();
|
|
}
|
|
}
|
|
} elseif ( $new === 'next' ) {
|
|
// Show diff between revision $old and the next one. Get next one from DB.
|
|
$oldid = intval( $old );
|
|
$newid = false;
|
|
$oldRev = $rl->getRevisionById( $oldid );
|
|
if ( $oldRev ) {
|
|
$newRev = $rl->getNextRevision( $oldRev );
|
|
if ( $newRev ) {
|
|
$newid = $newRev->getId();
|
|
}
|
|
}
|
|
} else {
|
|
$oldid = intval( $old );
|
|
$newid = intval( $new );
|
|
}
|
|
|
|
return [ $oldid, $newid ];
|
|
}
|
|
|
|
/**
|
|
* Load revision IDs
|
|
*/
|
|
private function loadRevisionIds() {
|
|
if ( $this->mRevisionsIdsLoaded ) {
|
|
return;
|
|
}
|
|
|
|
$this->mRevisionsIdsLoaded = true;
|
|
|
|
$old = $this->mOldid;
|
|
$new = $this->mNewid;
|
|
|
|
list( $this->mOldid, $this->mNewid ) = self::mapDiffPrevNext( $old, $new );
|
|
if ( $new === 'next' && $this->mNewid === false ) {
|
|
# if no result, NewId points to the newest old revision. The only newer
|
|
# revision is cur, which is "0".
|
|
$this->mNewid = 0;
|
|
}
|
|
|
|
Hooks::run(
|
|
'NewDifferenceEngine',
|
|
[ $this->getTitle(), &$this->mOldid, &$this->mNewid, $old, $new ]
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Load revision metadata for the specified revisions. If newid is 0, then compare
|
|
* the old revision in oldid to the current revision of the current page (as defined
|
|
* by the request context); if oldid is 0, then compare the revision in newid to the
|
|
* immediately previous one.
|
|
*
|
|
* If oldid is false, leave the corresponding revision object set to false. This can
|
|
* happen with 'diff=prev' pointing to a non-existent revision, and is also used directly
|
|
* by the API.
|
|
*
|
|
* @return bool Whether both revisions were loaded successfully. Setting mOldRev
|
|
* to false counts as successful loading.
|
|
*/
|
|
public function loadRevisionData() {
|
|
if ( $this->mRevisionsLoaded ) {
|
|
return $this->isContentOverridden || ( $this->mOldRev !== null && $this->mNewRev !== null );
|
|
}
|
|
|
|
// Whether it succeeds or fails, we don't want to try again
|
|
$this->mRevisionsLoaded = true;
|
|
|
|
$this->loadRevisionIds();
|
|
|
|
// Load the new revision object
|
|
if ( $this->mNewid ) {
|
|
$this->mNewRev = Revision::newFromId( $this->mNewid );
|
|
} else {
|
|
$this->mNewRev = Revision::newFromTitle(
|
|
$this->getTitle(),
|
|
false,
|
|
Revision::READ_NORMAL
|
|
);
|
|
}
|
|
|
|
if ( !$this->mNewRev instanceof Revision ) {
|
|
return false;
|
|
}
|
|
|
|
// Update the new revision ID in case it was 0 (makes life easier doing UI stuff)
|
|
$this->mNewid = $this->mNewRev->getId();
|
|
if ( $this->mNewid ) {
|
|
$this->mNewPage = $this->mNewRev->getTitle();
|
|
} else {
|
|
$this->mNewPage = null;
|
|
}
|
|
|
|
// Load the old revision object
|
|
$this->mOldRev = false;
|
|
if ( $this->mOldid ) {
|
|
$this->mOldRev = Revision::newFromId( $this->mOldid );
|
|
} elseif ( $this->mOldid === 0 ) {
|
|
$rev = $this->mNewRev->getPrevious();
|
|
if ( $rev ) {
|
|
$this->mOldid = $rev->getId();
|
|
$this->mOldRev = $rev;
|
|
} else {
|
|
// No previous revision; mark to show as first-version only.
|
|
$this->mOldid = false;
|
|
$this->mOldRev = false;
|
|
}
|
|
} /* elseif ( $this->mOldid === false ) leave mOldRev false; */
|
|
|
|
if ( is_null( $this->mOldRev ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $this->mOldRev && $this->mOldRev->getId() ) {
|
|
$this->mOldPage = $this->mOldRev->getTitle();
|
|
} else {
|
|
$this->mOldPage = null;
|
|
}
|
|
|
|
// Load tags information for both revisions
|
|
$dbr = wfGetDB( DB_REPLICA );
|
|
$changeTagDefStore = MediaWikiServices::getInstance()->getChangeTagDefStore();
|
|
if ( $this->mOldid !== false ) {
|
|
$tagIds = $dbr->selectFieldValues(
|
|
'change_tag',
|
|
'ct_tag_id',
|
|
[ 'ct_rev_id' => $this->mOldid ],
|
|
__METHOD__
|
|
);
|
|
$tags = [];
|
|
foreach ( $tagIds as $tagId ) {
|
|
try {
|
|
$tags[] = $changeTagDefStore->getName( (int)$tagId );
|
|
} catch ( NameTableAccessException $exception ) {
|
|
continue;
|
|
}
|
|
}
|
|
$this->mOldTags = implode( ',', $tags );
|
|
} else {
|
|
$this->mOldTags = false;
|
|
}
|
|
|
|
$tagIds = $dbr->selectFieldValues(
|
|
'change_tag',
|
|
'ct_tag_id',
|
|
[ 'ct_rev_id' => $this->mNewid ],
|
|
__METHOD__
|
|
);
|
|
$tags = [];
|
|
foreach ( $tagIds as $tagId ) {
|
|
try {
|
|
$tags[] = $changeTagDefStore->getName( (int)$tagId );
|
|
} catch ( NameTableAccessException $exception ) {
|
|
continue;
|
|
}
|
|
}
|
|
$this->mNewTags = implode( ',', $tags );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Load the text of the revisions, as well as revision data.
|
|
* When the old revision is missing (mOldRev is false), loading mOldContent is not attempted.
|
|
*
|
|
* @return bool Whether the content of both revisions could be loaded successfully.
|
|
* (When mOldRev is false, that still counts as a success.)
|
|
*
|
|
*/
|
|
public function loadText() {
|
|
if ( $this->mTextLoaded == 2 ) {
|
|
return $this->loadRevisionData() && ( $this->mOldRev === false || $this->mOldContent )
|
|
&& $this->mNewContent;
|
|
}
|
|
|
|
// Whether it succeeds or fails, we don't want to try again
|
|
$this->mTextLoaded = 2;
|
|
|
|
if ( !$this->loadRevisionData() ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $this->mOldRev ) {
|
|
$this->mOldContent = $this->mOldRev->getContent(
|
|
RevisionRecord::FOR_THIS_USER, $this->getUser()
|
|
);
|
|
if ( $this->mOldContent === null ) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$this->mNewContent = $this->mNewRev->getContent(
|
|
RevisionRecord::FOR_THIS_USER, $this->getUser()
|
|
);
|
|
Hooks::run( 'DifferenceEngineLoadTextAfterNewContentIsLoaded', [ $this ] );
|
|
if ( $this->mNewContent === null ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Load the text of the new revision, not the old one
|
|
*
|
|
* @return bool Whether the content of the new revision could be loaded successfully.
|
|
*/
|
|
public function loadNewText() {
|
|
if ( $this->mTextLoaded >= 1 ) {
|
|
return $this->loadRevisionData();
|
|
}
|
|
|
|
$this->mTextLoaded = 1;
|
|
|
|
if ( !$this->loadRevisionData() ) {
|
|
return false;
|
|
}
|
|
|
|
$this->mNewContent = $this->mNewRev->getContent(
|
|
RevisionRecord::FOR_THIS_USER, $this->getUser()
|
|
);
|
|
|
|
Hooks::run( 'DifferenceEngineAfterLoadNewText', [ $this ] );
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|