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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\Title; |
22 | |
23 | use Language; |
24 | |
25 | /** |
26 | * A parser that translates page titles on a foreign wiki into ForeignTitle |
27 | * objects, with no knowledge of the namespace setup on the foreign site. |
28 | */ |
29 | class NaiveForeignTitleFactory implements ForeignTitleFactory { |
30 | |
31 | /** @var Language */ |
32 | private $contentLanguage; |
33 | |
34 | /** |
35 | * @param Language $contentLanguage |
36 | */ |
37 | public function __construct( Language $contentLanguage ) { |
38 | $this->contentLanguage = $contentLanguage; |
39 | } |
40 | |
41 | /** |
42 | * Create a ForeignTitle object. |
43 | * |
44 | * Based on the page title and optionally the namespace ID, of a page on a foreign wiki. |
45 | * These values could be, for example, the `<title>` and `<ns>` attributes found in an |
46 | * XML dump. |
47 | * |
48 | * Although exported XML dumps have contained a map of namespace IDs to names |
49 | * since MW 1.5, the importer used to completely ignore the `<siteinfo>` tag |
50 | * before MW 1.25. It is therefore possible that custom XML dumps (i.e. not |
51 | * generated by Special:Export) have been created without this metadata. |
52 | * As a result, this code falls back to using namespace data for the local |
53 | * wiki (similar to buggy pre-1.25 behaviour) if $ns is not supplied. |
54 | * |
55 | * @param string $title The page title |
56 | * @param int|null $ns The namespace ID, or null if this data is not available |
57 | * @return ForeignTitle |
58 | */ |
59 | public function createForeignTitle( $title, $ns = null ) { |
60 | $pieces = explode( ':', $title, 2 ); |
61 | |
62 | /** |
63 | * Can we assume that the part of the page title before the colon is a |
64 | * namespace name? |
65 | * |
66 | * XML export schema version 0.5 and earlier (MW 1.18 and earlier) does not |
67 | * contain a <ns> tag, so we need to be able to handle that case. |
68 | * |
69 | * If we know the namespace ID, we assume a non-zero namespace ID means |
70 | * the ':' sets off a valid namespace name. If we don't know the namespace |
71 | * ID, we fall back to using the local wiki's namespace names to resolve |
72 | * this -- better than nothing, and mimics the old crappy behavior |
73 | */ |
74 | $isNamespacePartValid = $ns === null |
75 | ? $this->contentLanguage->getNsIndex( $pieces[0] ) !== false |
76 | : $ns != 0; |
77 | |
78 | if ( count( $pieces ) === 2 && $isNamespacePartValid ) { |
79 | [ $namespaceName, $pageName ] = $pieces; |
80 | } else { |
81 | $namespaceName = ''; |
82 | $pageName = $title; |
83 | } |
84 | |
85 | return new ForeignTitle( $ns, $namespaceName, $pageName ); |
86 | } |
87 | } |
88 | |
89 | /** @deprecated class alias since 1.41 */ |
90 | class_alias( NaiveForeignTitleFactory::class, 'NaiveForeignTitleFactory' ); |