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<?php
/**
* Class to parse and build external user names
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
use MediaWiki\MediaWikiServices;
/**
* Class to parse and build external user names
* @since 1.31
*/
class ExternalUserNames {
private $usernamePrefix = 'imported';
private $assignKnownUsers = false;
private $triedCreations = [];
/**
* @param string $usernamePrefix Prefix to apply to unknown (and possibly also known) usernames
* @param bool $assignKnownUsers Whether to apply the prefix to usernames that exist locally
*/
public function __construct( $usernamePrefix, $assignKnownUsers ) {
$this->usernamePrefix = rtrim( (string)$usernamePrefix, ':>' );
$this->assignKnownUsers = (bool)$assignKnownUsers;
}
/**
* Get a target Title to link a username.
*
* @param string $userName Username to link
*
* @return null|Title
*/
public static function getUserLinkTitle( $userName ) {
$pos = strpos( $userName, '>' );
if ( $pos !== false ) {
$iw = explode( ':', substr( $userName, 0, $pos ) );
$firstIw = array_shift( $iw );
$interwikiLookup = MediaWikiServices::getInstance()->getInterwikiLookup();
if ( $interwikiLookup->isValidInterwiki( $firstIw ) ) {
$title = MWNamespace::getCanonicalName( NS_USER ) . ':' . substr( $userName, $pos + 1 );
if ( $iw ) {
$title = implode( ':', $iw ) . ':' . $title;
}
return Title::makeTitle( NS_MAIN, $title, '', $firstIw );
}
return null;
} else {
return SpecialPage::getTitleFor( 'Contributions', $userName );
}
}
/**
* Add an interwiki prefix to the username, if appropriate
*
* @param string $name Name being imported
* @return string Name, possibly with the prefix prepended.
*/
public function applyPrefix( $name ) {
if ( !User::isUsableName( $name ) ) {
return $name;
}
if ( $this->assignKnownUsers ) {
if ( User::idFromName( $name ) ) {
return $name;
}
// See if any extension wants to create it.
if ( !isset( $this->triedCreations[$name] ) ) {
$this->triedCreations[$name] = true;
if ( !Hooks::run( 'ImportHandleUnknownUser', [ $name ] ) &&
User::idFromName( $name, User::READ_LATEST )
) {
return $name;
}
}
}
return $this->addPrefix( $name );
}
/**
* Add an interwiki prefix to the username regardless of circumstances
*
* @param string $name Name being imported
* @return string Name
*/
public function addPrefix( $name ) {
return substr( $this->usernamePrefix . '>' . $name, 0, 255 );
}
/**
* Tells whether the username is external or not
*
* @param string $username Username to check
* @return bool true if it's external, false otherwise.
*/
public static function isExternal( $username ) {
return strpos( $username, '>' ) !== false;
}
/**
* Get local part of the user name
*
* @param string $username Username to get
* @return string
*/
public static function getLocal( $username ) {
if ( !self::isExternal( $username ) ) {
return $username;
}
return substr( $username, strpos( $username, '>' ) + 1 );
}
}
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