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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 | |
19 | namespace Wikimedia\Equivset; |
20 | |
21 | use ArrayIterator; |
22 | use IteratorAggregate; |
23 | use LogicException; |
24 | use Wikimedia\Equivset\Exception\EquivsetException; |
25 | |
26 | /** |
27 | * Default Equivset |
28 | */ |
29 | class Equivset implements EquivsetInterface, IteratorAggregate { |
30 | |
31 | /** |
32 | * @var array<string,string> |
33 | */ |
34 | protected array $data; |
35 | |
36 | /** |
37 | * @var string |
38 | */ |
39 | protected string $serializedPath; |
40 | |
41 | /** |
42 | * Equivset |
43 | * |
44 | * @param array<string,string> $data Equivalent Set |
45 | * @param string $serializedPath Path of the serialized equivset array. |
46 | */ |
47 | public function __construct( array $data = [], string $serializedPath = '' ) { |
48 | $this->data = $data; |
49 | $this->serializedPath = $serializedPath ?: __DIR__ . '/../dist/equivset.ser'; |
50 | } |
51 | |
52 | /** |
53 | * Get the equivset. |
54 | * |
55 | * @return array<string,string> An associative array of equivalent characters. |
56 | */ |
57 | public function all(): array { |
58 | if ( !$this->data ) { |
59 | $this->data = $this->load(); |
60 | } |
61 | |
62 | return $this->data; |
63 | } |
64 | |
65 | /** |
66 | * {@inheritdoc} |
67 | * |
68 | * @param string $value The string to normalize against the equivset. |
69 | * @return string |
70 | */ |
71 | public function normalize( string $value ): string { |
72 | $data = $this->all(); |
73 | |
74 | return strtr( $value, $data ); |
75 | } |
76 | |
77 | /** |
78 | * {@inheritdoc} |
79 | * |
80 | * @param string $str1 The first string. |
81 | * @param string $str2 The second string. |
82 | * |
83 | * @return bool |
84 | */ |
85 | public function isEqual( string $str1, string $str2 ): bool { |
86 | return $this->normalize( $str1 ) === $this->normalize( $str2 ); |
87 | } |
88 | |
89 | /** |
90 | * {@inheritdoc} |
91 | * |
92 | * @param string $key The character that was used. |
93 | * @return bool If the character has an equivalent. |
94 | */ |
95 | public function has( string $key ): bool { |
96 | $data = $this->all(); |
97 | |
98 | return array_key_exists( $key, $data ); |
99 | } |
100 | |
101 | /** |
102 | * {@inheritdoc} |
103 | * |
104 | * @param string $key The character that was used. |
105 | * @return string The equivalent character. |
106 | * @throws LogicException If character does not exist. |
107 | */ |
108 | public function get( string $key ): string { |
109 | $data = $this->all(); |
110 | |
111 | if ( !array_key_exists( $key, $data ) ) { |
112 | throw new LogicException( 'Equivalent Character Not Found' ); |
113 | } |
114 | |
115 | return $data[$key]; |
116 | } |
117 | |
118 | /** |
119 | * {@inheritdoc} |
120 | * |
121 | * @return ArrayIterator The complete Equivset. |
122 | */ |
123 | public function getIterator(): ArrayIterator { |
124 | return new ArrayIterator( $this->all() ); |
125 | } |
126 | |
127 | /** |
128 | * Get the equivset. |
129 | * |
130 | * @return array<string,string> An associative array of equivalent characters. |
131 | * @throws \Throwable If the serialized equivset file is unreadable. |
132 | */ |
133 | protected function load(): array { |
134 | if ( pathinfo( $this->serializedPath, PATHINFO_EXTENSION ) === 'php' ) { |
135 | // This will naturally throw if the file does not exist, is not readable, |
136 | // or can't be parsed. |
137 | return require $this->serializedPath; |
138 | } |
139 | |
140 | // file_get_contents() will not fail at this point since none of the |
141 | // conditions that can cause a failure can happen at this point. |
142 | // See http://php.net/manual/en/function.file-get-contents.php |
143 | |
144 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
145 | $contents = @file_get_contents( $this->serializedPath ); |
146 | if ( $contents === false ) { |
147 | throw new EquivsetException( 'Serialized equivset file is unreadable' ); |
148 | } |
149 | |
150 | $data = unserialize( $contents ); |
151 | if ( $data === false ) { |
152 | throw new EquivsetException( 'Unserializing serialized equivset failed' ); |
153 | } |
154 | |
155 | return $data; |
156 | } |
157 | } |