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1<?php
2/**
3 * Dump output filter to include or exclude pages in a given set of namespaces.
4 *
5 * Copyright © 2003, 2005, 2006 Brooke Vibber <bvibber@wikimedia.org>
6 * https://www.mediawiki.org/
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 * http://www.gnu.org/copyleft/gpl.html
22 *
23 * @file
24 */
25
26/**
27 * @ingroup Dump
28 */
29class DumpNamespaceFilter extends DumpFilter {
30    /** @var bool */
31    public $invert = false;
32
33    /** @var array */
34    public $namespaces = [];
35
36    /**
37     * @param DumpOutput &$sink
38     * @param string $param
39     */
40    public function __construct( &$sink, $param ) {
41        parent::__construct( $sink );
42
43        $constants = [
44            "NS_MAIN"           => NS_MAIN,
45            "NS_TALK"           => NS_TALK,
46            "NS_USER"           => NS_USER,
47            "NS_USER_TALK"      => NS_USER_TALK,
48            "NS_PROJECT"        => NS_PROJECT,
49            "NS_PROJECT_TALK"   => NS_PROJECT_TALK,
50            "NS_FILE"           => NS_FILE,
51            "NS_FILE_TALK"      => NS_FILE_TALK,
52            "NS_MEDIAWIKI"      => NS_MEDIAWIKI,
53            "NS_MEDIAWIKI_TALK" => NS_MEDIAWIKI_TALK,
54            "NS_TEMPLATE"       => NS_TEMPLATE,
55            "NS_TEMPLATE_TALK"  => NS_TEMPLATE_TALK,
56            "NS_HELP"           => NS_HELP,
57            "NS_HELP_TALK"      => NS_HELP_TALK,
58            "NS_CATEGORY"       => NS_CATEGORY,
59            "NS_CATEGORY_TALK"  => NS_CATEGORY_TALK ];
60
61        if ( $param[0] == '!' ) {
62            $this->invert = true;
63            $param = substr( $param, 1 );
64        }
65
66        foreach ( explode( ',', $param ) as $key ) {
67            $key = trim( $key );
68            if ( isset( $constants[$key] ) ) {
69                $ns = $constants[$key];
70                $this->namespaces[$ns] = true;
71            } elseif ( is_numeric( $key ) ) {
72                $ns = intval( $key );
73                $this->namespaces[$ns] = true;
74            } else {
75                throw new InvalidArgumentException( "Unrecognized namespace key '$key'\n" );
76            }
77        }
78    }
79
80    /**
81     * @param stdClass $page
82     * @return bool
83     */
84    protected function pass( $page ) {
85        $match = isset( $this->namespaces[$page->page_namespace] );
86        return $this->invert xor $match;
87    }
88}