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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | /** |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @author Addshore |
| 22 | */ |
| 23 | namespace Wikimedia\Parsoid\Core; |
| 24 | |
| 25 | /** |
| 26 | * Useful helpers for LinkTarget implementations. |
| 27 | * |
| 28 | * @see LinkTarget |
| 29 | */ |
| 30 | trait LinkTargetTrait { |
| 31 | |
| 32 | /** |
| 33 | * Convenience function to check if the target is in a given namespace. |
| 34 | * |
| 35 | * @param int $ns |
| 36 | * @return bool |
| 37 | */ |
| 38 | public function inNamespace( int $ns ): bool { |
| 39 | '@phan-var LinkTarget $this'; |
| 40 | // Core may someday switch to an enumerated type, but this is |
| 41 | // safe for now. |
| 42 | return $this->getNamespace() === $ns; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Whether the link target has a fragment. |
| 47 | * |
| 48 | * @return bool |
| 49 | */ |
| 50 | public function hasFragment(): bool { |
| 51 | '@phan-var LinkTarget $this'; |
| 52 | return $this->getFragment() !== ''; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Get the main part of the link target, in text form. |
| 57 | * |
| 58 | * The main part is the link target without namespace prefix or hash fragment. |
| 59 | * The text form is used for display purposes. |
| 60 | * |
| 61 | * This is computed from the DB key by replacing any underscores with spaces. |
| 62 | * |
| 63 | * @note To get a title string that includes the namespace and/or fragment, |
| 64 | * use a TitleFormatter. |
| 65 | * |
| 66 | * @return string |
| 67 | */ |
| 68 | public function getText(): string { |
| 69 | '@phan-var LinkTarget $this'; |
| 70 | return strtr( $this->getDBKey(), '_', ' ' ); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Whether this LinkTarget has an interwiki component. |
| 75 | * |
| 76 | * @return bool |
| 77 | */ |
| 78 | public function isExternal(): bool { |
| 79 | '@phan-var LinkTarget $this'; |
| 80 | return $this->getInterwiki() !== ''; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Check whether the given LinkTarget refers to the same target as this LinkTarget. |
| 85 | * |
| 86 | * Two link targets are considered the same if they have the same interwiki prefix, |
| 87 | * are in the same namespace, have the same main part, and the same fragment. |
| 88 | * |
| 89 | * @param LinkTarget $other |
| 90 | * @return bool |
| 91 | */ |
| 92 | public function isSameLinkAs( LinkTarget $other ): bool { |
| 93 | '@phan-var LinkTarget $this'; |
| 94 | // NOTE: keep in sync with Title::isSameLinkAs()! |
| 95 | // NOTE: keep in sync with TitleValue::isSameLinkAs()! |
| 96 | // NOTE: === is needed for number-like titles |
| 97 | return ( $other->getInterwiki() === $this->getInterwiki() ) |
| 98 | && ( $other->getDBkey() === $this->getDBkey() ) |
| 99 | && ( $other->getNamespace() === $this->getNamespace() ) |
| 100 | && ( $other->getFragment() === $this->getFragment() ); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Return an informative human-readable representation of the link target |
| 105 | * namespace, for use in logging and debugging. |
| 106 | * |
| 107 | * @return string |
| 108 | */ |
| 109 | public function getNamespaceName(): string { |
| 110 | '@phan-var LinkTarget $this'; |
| 111 | if ( $this->getNamespace() === 0 ) { |
| 112 | return ''; // 0 is NS_MAIN |
| 113 | } |
| 114 | // A nicer version of this would convert the namespace to a |
| 115 | // human-readable string, but that's outside the bounds of the |
| 116 | // limited LinkTarget interface. As a fallback, just use a |
| 117 | // numeric namespace. Implementations can override this. |
| 118 | return '<' . strval( $this->getNamespace() ) . '>'; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Return an informative human-readable representation of the link target, |
| 123 | * for use in logging and debugging. |
| 124 | * |
| 125 | * @return string |
| 126 | */ |
| 127 | public function __toString(): string { |
| 128 | '@phan-var LinkTarget $this'; |
| 129 | $result = ''; |
| 130 | if ( $this->isExternal() ) { |
| 131 | $result .= $this->getInterwiki() . ':'; |
| 132 | } |
| 133 | if ( $this->getNamespace() !== 0 ) { // 0 is NS_MAIN |
| 134 | '@phan-var LinkTargetTrait $this'; |
| 135 | $result .= $this->getNamespaceName() . ':'; |
| 136 | } |
| 137 | $result .= $this->getText(); |
| 138 | if ( $this->hasFragment() ) { |
| 139 | $result .= '#' . $this->getFragment(); |
| 140 | } |
| 141 | return $result; |
| 142 | } |
| 143 | |
| 144 | } |