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| 1 | <?php |
| 2 | /** |
| 3 | * MediaWiki page data importer. |
| 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 | * This is a horrible hack used to keep source compatibility. |
| 29 | * @ingroup SpecialPage |
| 30 | */ |
| 31 | class UploadSourceAdapter { |
| 32 | /** @var ImportSource[] */ |
| 33 | public static $sourceRegistrations = []; |
| 34 | |
| 35 | /** @var resource|null Must exists on stream wrapper class */ |
| 36 | public $context; |
| 37 | |
| 38 | /** @var ImportSource */ |
| 39 | private $mSource; |
| 40 | |
| 41 | /** @var string */ |
| 42 | private $mBuffer = ''; |
| 43 | |
| 44 | /** @var int */ |
| 45 | private $mPosition; |
| 46 | |
| 47 | /** |
| 48 | * @param ImportSource $source |
| 49 | * @return string |
| 50 | */ |
| 51 | public static function registerSource( ImportSource $source ) { |
| 52 | $id = wfRandomString(); |
| 53 | |
| 54 | self::$sourceRegistrations[$id] = $source; |
| 55 | |
| 56 | return $id; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param string $id |
| 61 | * @return bool |
| 62 | */ |
| 63 | public static function isSeekableSource( string $id ) { |
| 64 | if ( !isset( self::$sourceRegistrations[$id] ) ) { |
| 65 | return false; |
| 66 | } |
| 67 | return self::$sourceRegistrations[$id]->isSeekable(); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * @param string $id |
| 72 | * @param int $offset |
| 73 | * @return int|false |
| 74 | */ |
| 75 | public static function seekSource( string $id, int $offset ) { |
| 76 | if ( !isset( self::$sourceRegistrations[$id] ) ) { |
| 77 | return false; |
| 78 | } |
| 79 | return self::$sourceRegistrations[$id]->seek( $offset ); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * @param string $path |
| 84 | * @param string $mode |
| 85 | * @param int $options |
| 86 | * @param string &$opened_path |
| 87 | * @return bool |
| 88 | */ |
| 89 | public function stream_open( $path, $mode, $options, &$opened_path ) { |
| 90 | $url = parse_url( $path ); |
| 91 | if ( !isset( $url['host'] ) ) { |
| 92 | return false; |
| 93 | } |
| 94 | $id = $url['host']; |
| 95 | |
| 96 | if ( !isset( self::$sourceRegistrations[$id] ) ) { |
| 97 | return false; |
| 98 | } |
| 99 | |
| 100 | $this->mSource = self::$sourceRegistrations[$id]; |
| 101 | |
| 102 | return true; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * @param int $count |
| 107 | * @return string |
| 108 | */ |
| 109 | public function stream_read( $count ) { |
| 110 | $return = ''; |
| 111 | $leave = false; |
| 112 | |
| 113 | while ( !$leave && !$this->mSource->atEnd() && |
| 114 | strlen( $this->mBuffer ) < $count |
| 115 | ) { |
| 116 | $read = $this->mSource->readChunk(); |
| 117 | |
| 118 | if ( !strlen( $read ) ) { |
| 119 | $leave = true; |
| 120 | } |
| 121 | |
| 122 | $this->mBuffer .= $read; |
| 123 | } |
| 124 | |
| 125 | if ( strlen( $this->mBuffer ) ) { |
| 126 | $return = substr( $this->mBuffer, 0, $count ); |
| 127 | $this->mBuffer = substr( $this->mBuffer, $count ); |
| 128 | } |
| 129 | |
| 130 | $this->mPosition += strlen( $return ); |
| 131 | |
| 132 | return $return; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * @param string $data |
| 137 | * @return false |
| 138 | */ |
| 139 | public function stream_write( $data ) { |
| 140 | return false; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * @return int |
| 145 | */ |
| 146 | public function stream_tell() { |
| 147 | return $this->mPosition; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * @return bool |
| 152 | */ |
| 153 | public function stream_eof() { |
| 154 | return $this->mSource->atEnd(); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * @return int[] |
| 159 | */ |
| 160 | public function url_stat() { |
| 161 | $result = []; |
| 162 | |
| 163 | $result['dev'] = $result[0] = 0; |
| 164 | $result['ino'] = $result[1] = 0; |
| 165 | $result['mode'] = $result[2] = 0; |
| 166 | $result['nlink'] = $result[3] = 0; |
| 167 | $result['uid'] = $result[4] = 0; |
| 168 | $result['gid'] = $result[5] = 0; |
| 169 | $result['rdev'] = $result[6] = 0; |
| 170 | $result['size'] = $result[7] = 0; |
| 171 | $result['atime'] = $result[8] = 0; |
| 172 | $result['mtime'] = $result[9] = 0; |
| 173 | $result['ctime'] = $result[10] = 0; |
| 174 | $result['blksize'] = $result[11] = 0; |
| 175 | $result['blocks'] = $result[12] = 0; |
| 176 | |
| 177 | return $result; |
| 178 | } |
| 179 | } |