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1 | <?php |
2 | /** |
3 | * Source interface for XML import. |
4 | * |
5 | * Copyright © 2003,2005 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 | * @ingroup SpecialPage |
25 | */ |
26 | |
27 | /** |
28 | * Source interface for XML import. |
29 | * |
30 | * @ingroup SpecialPage |
31 | */ |
32 | interface ImportSource { |
33 | |
34 | /** |
35 | * Indicates whether the end of the input has been reached. |
36 | * Will return true after a finite number of calls to readChunk. |
37 | * |
38 | * @return bool true if there is no more input, false otherwise. |
39 | */ |
40 | public function atEnd(); |
41 | |
42 | /** |
43 | * Return a chunk of the input, as a (possibly empty) string. |
44 | * When the end of input is reached, readChunk() returns false. |
45 | * If atEnd() returns false, readChunk() will return a string. |
46 | * If atEnd() returns true, readChunk() will return false. |
47 | * |
48 | * @return bool|string |
49 | */ |
50 | public function readChunk(); |
51 | |
52 | /** |
53 | * Check if the source is seekable and a call to self::seek is valid |
54 | * |
55 | * @return bool |
56 | */ |
57 | public function isSeekable(); |
58 | |
59 | /** |
60 | * Seek the input to the given offset. |
61 | * |
62 | * @param int $offset |
63 | * @return int |
64 | */ |
65 | public function seek( int $offset ); |
66 | } |