* @todo document
*/
class Revision {
+ protected $mId;
+ protected $mPage;
+ protected $mUserText;
+ protected $mOrigUserText;
+ protected $mUser;
+ protected $mMinorEdit;
+ protected $mTimestamp;
+ protected $mDeleted;
+ protected $mSize;
+ protected $mSha1;
+ protected $mParentId;
+ protected $mComment;
+ protected $mText;
+ protected $mTextRow;
+ protected $mTitle;
+ protected $mCurrent;
+
const DELETED_TEXT = 1;
const DELETED_COMMENT = 2;
const DELETED_USER = 4;
'minor_edit' => $row->ar_minor_edit,
'text_id' => isset( $row->ar_text_id ) ? $row->ar_text_id : null,
'deleted' => $row->ar_deleted,
- 'len' => $row->ar_len
+ 'len' => $row->ar_len,
+ 'sha1' => $row->ar_sha1
);
if ( isset( $row->ar_text ) && !$row->ar_text_id ) {
// Pre-1.5 ar_text row
$conditions,
__METHOD__,
array( 'LIMIT' => 1 ),
- array( 'page' => array( 'INNER JOIN', 'page_id = rev_page' ),
- 'user' => array( 'LEFT JOIN', 'rev_user != 0 AND user_id = rev_user' ) )
+ array( 'page' => self::pageJoinCond(), 'user' => self::userJoinCond() )
);
}
+ /**
+ * Return the value of a select() JOIN conds array for the user table.
+ * This will get user table rows for logged-in users.
+ * @return Array
+ */
+ public static function userJoinCond() {
+ return array( 'LEFT JOIN', array( 'rev_user != 0', 'user_id = rev_user' ) );
+ }
+
+ /**
+ * Return the value of a select() page conds array for the paeg table.
+ * This will assure that the revision(s) are not orphaned from live pages.
+ * @return Array
+ */
+ public static function pageJoinCond() {
+ return array( 'INNER JOIN', array( 'page_id = rev_page' ) );
+ }
+
/**
* Return the list of revision fields that should be selected to create
* a new revision.
'rev_minor_edit',
'rev_deleted',
'rev_len',
- 'rev_parent_id'
+ 'rev_parent_id',
+ 'rev_sha1'
);
}
$this->mDeleted = intval( $row->rev_deleted );
if( !isset( $row->rev_parent_id ) ) {
- $this->mParentId = is_null($row->rev_parent_id) ? null : 0;
+ $this->mParentId = is_null( $row->rev_parent_id ) ? null : 0;
} else {
$this->mParentId = intval( $row->rev_parent_id );
}
$this->mSize = intval( $row->rev_len );
}
+ if ( !isset( $row->rev_sha1 ) ) {
+ $this->mSha1 = null;
+ } else {
+ $this->mSha1 = $row->rev_sha1;
+ }
+
if( isset( $row->page_latest ) ) {
$this->mCurrent = ( $row->rev_id == $row->page_latest );
$this->mTitle = Title::newFromRow( $row );
$this->mTextRow = null;
}
- // Use user_name for users and rev_user_text for IPs.
- // Also fallback to rev_user_text if user_name not given.
- if ( isset( $row->user_name ) ) {
- $this->mUserText = $row->user_name; // logged-in user (ideally)
- } else {
- $this->mUserText = $row->rev_user_text; // IP user (ideally)
+ // Use user_name for users and rev_user_text for IPs...
+ $this->mUserText = null; // lazy load if left null
+ if ( $this->mUser == 0 ) {
+ $this->mUserText = $row->rev_user_text; // IP user
+ } elseif ( isset( $row->user_name ) ) {
+ $this->mUserText = $row->user_name; // logged-in user
}
+ $this->mOrigUserText = $row->rev_user_text;
} elseif( is_array( $row ) ) {
// Build a new revision to be saved...
- global $wgUser;
+ global $wgUser; // ugh
$this->mId = isset( $row['id'] ) ? intval( $row['id'] ) : null;
$this->mPage = isset( $row['page'] ) ? intval( $row['page'] ) : null;
$this->mDeleted = isset( $row['deleted'] ) ? intval( $row['deleted'] ) : 0;
$this->mSize = isset( $row['len'] ) ? intval( $row['len'] ) : null;
$this->mParentId = isset( $row['parent_id'] ) ? intval( $row['parent_id'] ) : null;
+ $this->mSha1 = isset( $row['sha1'] ) ? strval( $row['sha1'] ) : null;
// Enforce spacing trimming on supplied text
$this->mComment = isset( $row['comment'] ) ? trim( strval( $row['comment'] ) ) : null;
$this->mTitle = null; # Load on demand if needed
$this->mCurrent = false;
- # If we still have no len_size, see it we have the text to figure it out
+ # If we still have no length, see it we have the text to figure it out
if ( !$this->mSize ) {
- $this->mSize = is_null( $this->mText ) ? null : strlen( $this->mText );
+ $this->mSize = is_null( $this->mText ) ? null : strlen( $this->mText );
+ }
+ # Same for sha1
+ if ( $this->mSha1 === null ) {
+ $this->mSha1 = is_null( $this->mText ) ? null : self::base36Sha1( $this->mText );
}
} else {
throw new MWException( 'Revision constructor passed invalid row format.' );
return $this->mSize;
}
+ /**
+ * Returns the base36 sha1 of the text in this revision, or null if unknown.
+ *
+ * @return String
+ */
+ public function getSha1() {
+ return $this->mSha1;
+ }
+
/**
* Returns the title of the page associated with this entry.
*
} elseif( $audience == self::FOR_THIS_USER && !$this->userCan( self::DELETED_USER, $user ) ) {
return '';
} else {
- return $this->mUserText;
+ return $this->getRawUserText();
}
}
* @return String
*/
public function getRawUserText() {
+ if ( $this->mUserText === null ) {
+ $this->mUserText = User::whoIs( $this->mUser ); // load on demand
+ if ( $this->mUserText === false ) {
+ # This shouldn't happen, but it can if the wiki was recovered
+ # via importing revs and there is no user table entry yet.
+ $this->mUserText = $this->mOrigUserText;
+ }
+ }
return $this->mUserText;
}
'rev_timestamp' => $dbw->timestamp( $this->mTimestamp ),
'rev_deleted' => $this->mDeleted,
'rev_len' => $this->mSize,
- 'rev_parent_id' => is_null($this->mParentId) ?
- $this->getPreviousRevisionId( $dbw ) : $this->mParentId
+ 'rev_parent_id' => is_null( $this->mParentId )
+ ? $this->getPreviousRevisionId( $dbw )
+ : $this->mParentId,
+ 'rev_sha1' => is_null( $this->mSha1 )
+ ? Revision::base36Sha1( $this->mText )
+ : $this->mSha1
), __METHOD__
);
return $this->mId;
}
+ /**
+ * Get the base 36 SHA-1 value for a string of text
+ * @param $text String
+ * @return String
+ */
+ public static function base36Sha1( $text ) {
+ return wfBaseConvert( sha1( $text ), 16, 36, 31 );
+ }
+
/**
* Lazy-load the revision's text.
* Currently hardcoded to the 'text' table storage engine.
$current = $dbw->selectRow(
array( 'page', 'revision' ),
- array( 'page_latest', 'rev_text_id', 'rev_len' ),
+ array( 'page_latest', 'rev_text_id', 'rev_len', 'rev_sha1' ),
array(
'page_id' => $pageId,
'page_latest=rev_id',
'minor_edit' => $minor,
'text_id' => $current->rev_text_id,
'parent_id' => $current->page_latest,
- 'len' => $current->rev_len
+ 'len' => $current->rev_len,
+ 'sha1' => $current->rev_sha1
) );
} else {
$revision = null;