268 lines
8.0 KiB
PHP
268 lines
8.0 KiB
PHP
<?php
|
|
/**
|
|
* Representation of a page title within MediaWiki.
|
|
*
|
|
* 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
|
|
* @author Daniel Kinzler
|
|
*/
|
|
|
|
namespace MediaWiki\Title;
|
|
|
|
use InvalidArgumentException;
|
|
use MediaWiki\Linker\LinkTarget;
|
|
use MediaWiki\Page\PageReference;
|
|
use Stringable;
|
|
use Wikimedia\Assert\Assert;
|
|
use Wikimedia\Assert\ParameterAssertionException;
|
|
use Wikimedia\Assert\ParameterTypeException;
|
|
use Wikimedia\Parsoid\Core\LinkTarget as ParsoidLinkTarget;
|
|
use Wikimedia\Parsoid\Core\LinkTargetTrait;
|
|
|
|
/**
|
|
* Represents the target of a wiki link.
|
|
*
|
|
* @note In contrast to Title, this is designed to be a plain value object. That is,
|
|
* it is immutable, does not use global state, and causes no side effects.
|
|
*
|
|
* @newable
|
|
*
|
|
* @see https://www.mediawiki.org/wiki/Manual:Modeling_pages
|
|
* @since 1.23
|
|
*/
|
|
class TitleValue implements Stringable, LinkTarget {
|
|
use LinkTargetTrait;
|
|
|
|
/** @var int */
|
|
private $namespace;
|
|
|
|
/** @var string */
|
|
private $dbkey;
|
|
|
|
/** @var string */
|
|
private $fragment;
|
|
|
|
/** @var string */
|
|
private $interwiki;
|
|
|
|
/**
|
|
* Text form including namespace/interwiki, initialised on demand
|
|
*
|
|
* Only public to share cache with TitleFormatter
|
|
*
|
|
* @internal
|
|
* @var string
|
|
*/
|
|
public $prefixedText = null;
|
|
|
|
/**
|
|
* Constructs a TitleValue, or returns null if the parameters are not valid.
|
|
*
|
|
* @note This does not perform any normalization, and only basic validation.
|
|
* For full normalization and validation, use TitleParser::makeTitleValueSafe().
|
|
*
|
|
* @param int $namespace The namespace ID. This is not validated.
|
|
* @param string $title The page title in either DBkey or text form. No normalization is applied
|
|
* beyond underscore/space conversion.
|
|
* @param string $fragment The fragment title. Use '' to represent the whole page.
|
|
* No validation or normalization is applied.
|
|
* @param string $interwiki The interwiki component.
|
|
* No validation or normalization is applied.
|
|
* @return TitleValue|null
|
|
*/
|
|
public static function tryNew( $namespace, $title, $fragment = '', $interwiki = '' ) {
|
|
if ( !is_int( $namespace ) ) {
|
|
throw new ParameterTypeException( '$namespace', 'int' );
|
|
}
|
|
|
|
try {
|
|
return new static( $namespace, $title, $fragment, $interwiki );
|
|
} catch ( ParameterAssertionException $ex ) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a TitleValue from a local PageReference.
|
|
*
|
|
* @note The PageReference may belong to another wiki. In that case, the resulting TitleValue
|
|
* is also logically bound to that other wiki. No attempt is made to map the
|
|
* PageReference wiki ID to an interwiki prefix for the TitleValue.
|
|
*
|
|
* @since 1.36
|
|
* @param PageReference $page
|
|
* @return TitleValue
|
|
*/
|
|
public static function newFromPage( PageReference $page ): TitleValue {
|
|
return new TitleValue( $page->getNamespace(), $page->getDBkey() );
|
|
}
|
|
|
|
/**
|
|
* Create a TitleValue from a LinkTarget
|
|
* @param ParsoidLinkTarget $linkTarget
|
|
* @return TitleValue
|
|
* @since 1.42
|
|
*/
|
|
public static function newFromLinkTarget( ParsoidLinkTarget $linkTarget ): TitleValue {
|
|
if ( $linkTarget instanceof TitleValue ) {
|
|
return $linkTarget;
|
|
}
|
|
return new TitleValue(
|
|
$linkTarget->getNamespace(),
|
|
$linkTarget->getDBkey(),
|
|
$linkTarget->getFragment(),
|
|
$linkTarget->getInterwiki()
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Casts a PageReference to a LinkTarget.
|
|
*
|
|
* If $page is null, null is returned.
|
|
* If $page is also an instance of LinkTarget, $page is returned unchanged.
|
|
*
|
|
* @see newFromPage()
|
|
* @since 1.37
|
|
* @param PageReference|null $page
|
|
* @return LinkTarget|null
|
|
*/
|
|
public static function castPageToLinkTarget( ?PageReference $page ): ?LinkTarget {
|
|
if ( !$page || $page instanceof LinkTarget ) {
|
|
return $page;
|
|
}
|
|
|
|
return self::newFromPage( $page );
|
|
}
|
|
|
|
/**
|
|
* Construct a TitleValue.
|
|
*
|
|
* @note TitleValue expects a valid namespace and name; typically, a TitleValue is constructed
|
|
* either from a database entry, or by a TitleParser. For constructing a TitleValue from user
|
|
* input or external sources, use a TitleParser.
|
|
*
|
|
* @stable to call
|
|
* @param int $namespace The namespace ID. This is not validated.
|
|
* @param string $title The page title in either DBkey or text form. No normalization is applied
|
|
* beyond underscore/space conversion.
|
|
* @param string $fragment The fragment title. Use '' to represent the whole page.
|
|
* No validation or normalization is applied.
|
|
* @param string $interwiki The interwiki component.
|
|
* No validation or normalization is applied.
|
|
*/
|
|
public function __construct( $namespace, $title, $fragment = '', $interwiki = '' ) {
|
|
self::assertValidSpec( $namespace, $title, $fragment, $interwiki );
|
|
|
|
$this->namespace = $namespace;
|
|
$this->dbkey = strtr( $title, ' ', '_' );
|
|
$this->fragment = $fragment;
|
|
$this->interwiki = $interwiki;
|
|
}
|
|
|
|
/**
|
|
* Assert that the given parameters could be used to construct a TitleValue object.
|
|
*
|
|
* Performs basic syntax and consistency checks. Does not perform full validation,
|
|
* use TitleParser::makeTitleValueSafe() for that.
|
|
*
|
|
* @param int $namespace
|
|
* @param string $title
|
|
* @param string $fragment
|
|
* @param string $interwiki
|
|
* @throws InvalidArgumentException if the combination of parameters is not valid for
|
|
* constructing a TitleValue.
|
|
*/
|
|
public static function assertValidSpec( $namespace, $title, $fragment = '', $interwiki = '' ) {
|
|
if ( !is_int( $namespace ) ) {
|
|
throw new ParameterTypeException( '$namespace', 'int' );
|
|
}
|
|
if ( !is_string( $title ) ) {
|
|
throw new ParameterTypeException( '$title', 'string' );
|
|
}
|
|
if ( !is_string( $fragment ) ) {
|
|
throw new ParameterTypeException( '$fragment', 'string' );
|
|
}
|
|
if ( !is_string( $interwiki ) ) {
|
|
throw new ParameterTypeException( '$interwiki', 'string' );
|
|
}
|
|
|
|
Assert::parameter( !preg_match( '/^[_ ]|[\r\n\t]|[_ ]$/', $title ), '$title',
|
|
"invalid name '$title'" );
|
|
|
|
// NOTE: As of MW 1.34, [[#]] is rendered as a valid link, pointing to the empty
|
|
// page title, effectively leading to the wiki's main page. This means that a completely
|
|
// empty TitleValue has to be considered valid, for consistency with Title.
|
|
// Also note that [[#foo]] is a valid on-page section links, and that [[acme:#foo]] is
|
|
// a valid interwiki link.
|
|
Assert::parameter(
|
|
$title !== '' || $namespace === NS_MAIN,
|
|
'$title',
|
|
'should not be empty unless namespace is main'
|
|
);
|
|
}
|
|
|
|
public function getNamespace(): int {
|
|
return $this->namespace;
|
|
}
|
|
|
|
public function getFragment(): string {
|
|
return $this->fragment;
|
|
}
|
|
|
|
public function getDBkey(): string {
|
|
return $this->dbkey;
|
|
}
|
|
|
|
public function createFragmentTarget( string $fragment ): self {
|
|
return new TitleValue(
|
|
$this->namespace,
|
|
$this->dbkey,
|
|
$fragment,
|
|
$this->interwiki
|
|
);
|
|
}
|
|
|
|
public function getInterwiki(): string {
|
|
return $this->interwiki;
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of the title, for logging. This is purely informative
|
|
* and must not be used programmatically. Use the appropriate TitleFormatter to generate
|
|
* the correct string representation for a given use.
|
|
*
|
|
* @since 1.23
|
|
* @return string
|
|
*/
|
|
public function __toString(): string {
|
|
$name = $this->namespace . ':' . $this->dbkey;
|
|
|
|
if ( $this->fragment !== '' ) {
|
|
$name .= '#' . $this->fragment;
|
|
}
|
|
|
|
if ( $this->interwiki !== '' ) {
|
|
$name = $this->interwiki . ':' . $name;
|
|
}
|
|
|
|
return $name;
|
|
}
|
|
}
|
|
|
|
/** @deprecated class alias since 1.41 */
|
|
class_alias( TitleValue::class, 'TitleValue' );
|