nazar-pc /
CleverStyle-Framework
Complex classes like Language often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Language, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 33 | class Language implements JsonSerializable { |
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| 34 | use Singleton; |
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| 35 | /** |
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| 36 | * Callable for time processing |
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| 37 | * |
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| 38 | * @var callable |
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| 39 | */ |
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| 40 | public $time; |
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| 41 | /** |
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| 42 | * @var string |
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| 43 | */ |
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| 44 | protected $current_language; |
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| 45 | /** |
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| 46 | * For single initialization |
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| 47 | * |
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| 48 | * @var bool |
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| 49 | */ |
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| 50 | protected $init = false; |
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| 51 | /** |
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| 52 | * Local cache of translations |
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| 53 | * |
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| 54 | * @var array |
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| 55 | */ |
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| 56 | protected $translation = []; |
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| 57 | /** |
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| 58 | * Cache to optimize frequent calls |
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| 59 | * |
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| 60 | * @var array |
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| 61 | */ |
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| 62 | protected $localized_url = []; |
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| 63 | /** |
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| 64 | * Set basic language |
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| 65 | */ |
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| 66 | 56 | protected function construct () { |
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| 67 | 56 | $Config = Config::instance(true); |
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| 68 | 56 | $Core = Core::instance(); |
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| 69 | 56 | $this->current_language = $Core->language; |
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| 70 | /** |
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| 71 | * We need Config for initialization |
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| 72 | */ |
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| 73 | 56 | if (!$Config) { |
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| 74 | 2 | Event::instance()->once( |
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| 75 | 2 | 'System/Config/init/after', |
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| 76 | function () { |
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| 77 | $this->init(); |
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| 78 | 2 | } |
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| 79 | ); |
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| 80 | } else { |
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| 81 | 54 | $this->init(); |
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| 82 | } |
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| 83 | 56 | Event::instance()->on( |
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| 84 | 56 | 'System/Config/changed', |
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| 85 | function () { |
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| 86 | 2 | $Config = Config::instance(); |
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| 87 | 2 | if ($Config->core['multilingual'] && User::instance(true)) { |
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| 88 | $this->current_language = User::instance()->language; |
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| 89 | } else { |
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| 90 | 2 | $this->current_language = $Config->core['language']; |
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| 91 | } |
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| 92 | 56 | } |
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| 93 | ); |
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| 94 | 56 | } |
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| 95 | /** |
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| 96 | * Initialization: set default language based on system configuration and request-specific parameters |
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| 97 | */ |
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| 98 | 54 | protected function init () { |
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| 99 | 54 | $Config = Config::instance(); |
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| 100 | 54 | if ($Config->core['multilingual']) { |
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| 101 | /** |
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| 102 | * Highest priority - `-Locale` header |
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| 103 | */ |
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| 104 | /** @noinspection PhpParamsInspection */ |
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| 105 | 8 | $language = $this->check_locale_header($Config->core['active_languages']); |
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| 106 | /** |
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| 107 | * Second priority - URL |
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| 108 | */ |
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| 109 | 8 | $language = $language ?: $this->url_language(Request::instance()->path); |
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| 110 | /** |
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| 111 | * Third - `Accept-Language` header |
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| 112 | */ |
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| 113 | /** @noinspection PhpParamsInspection */ |
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| 114 | 8 | $language = $language ?: $this->check_accept_header($Config->core['active_languages']); |
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| 115 | } else { |
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| 116 | 46 | $language = $Config->core['language']; |
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| 117 | } |
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| 118 | 54 | $this->current_language = $language ?: ''; |
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| 119 | 54 | } |
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| 120 | /** |
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| 121 | * Returns instance for simplified work with translations, when using common prefix |
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| 122 | * |
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| 123 | * @param string $prefix |
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| 124 | * |
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| 125 | * @return Prefix |
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| 126 | */ |
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| 127 | 22 | static function prefix ($prefix) { |
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| 128 | 22 | return new Prefix($prefix); |
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| 129 | } |
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| 130 | /** |
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| 131 | * Does URL have language prefix |
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| 132 | * |
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| 133 | * @param false|string $url Relative url, `Request::instance()->path` by default |
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| 134 | * |
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| 135 | * @return false|string If there is language prefix - language will be returned, `false` otherwise |
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| 136 | */ |
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| 137 | 32 | function url_language ($url = false) { |
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| 138 | /** |
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| 139 | * @var string $url |
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| 140 | */ |
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| 141 | 32 | $url = $url ?: Request::instance()->path; |
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| 142 | 32 | if (isset($this->localized_url[$url])) { |
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| 143 | return $this->localized_url[$url]; |
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| 144 | } |
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| 145 | 32 | $aliases = $this->get_aliases(); |
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| 146 | 32 | $clang = explode('?', $url, 2)[0]; |
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| 147 | 32 | $clang = explode('/', trim($clang, '/'), 2)[0]; |
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| 148 | 32 | if (isset($aliases[$clang])) { |
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| 149 | 4 | if (count($this->localized_url) > 100) { |
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| 150 | $this->localized_url = []; |
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| 151 | } |
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| 152 | 4 | return $this->localized_url[$url] = $aliases[$clang]; |
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| 153 | } |
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| 154 | 30 | return false; |
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| 155 | } |
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| 156 | /** |
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| 157 | * Checking Accept-Language header for languages that exists in configuration |
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| 158 | * |
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| 159 | * @param array $active_languages |
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| 160 | * |
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| 161 | * @return false|string |
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| 162 | */ |
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| 163 | 4 | protected function check_accept_header ($active_languages) { |
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| 164 | 4 | $aliases = $this->get_aliases(); |
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| 165 | 4 | $accept_languages = array_filter( |
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| 166 | explode( |
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| 167 | 4 | ',', |
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| 168 | strtolower( |
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| 169 | 4 | strtr(Request::instance()->header('accept-language'), '-', '_') |
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| 170 | ) |
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| 171 | ) |
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| 172 | ); |
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| 173 | 4 | foreach ($accept_languages as $language) { |
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| 174 | 4 | $language = explode(';', $language, 2)[0]; |
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| 175 | 4 | if (@in_array($aliases[$language], $active_languages)) { |
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| 176 | 4 | return $aliases[$language]; |
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| 177 | } |
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| 178 | } |
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| 179 | return false; |
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| 180 | } |
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| 181 | /** |
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| 182 | * Check `*-Locale` header (for instance, `X-Facebook-Locale`) that exists in configuration |
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| 183 | * |
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| 184 | * @param string[] $active_languages |
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| 185 | * |
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| 186 | * @return false|string |
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| 187 | */ |
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| 188 | 8 | protected function check_locale_header ($active_languages) { |
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| 189 | 8 | $aliases = $this->get_aliases(); |
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| 190 | /** |
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| 191 | * For `X-Facebook-Locale` and other similar |
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| 192 | */ |
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| 193 | 8 | foreach (Request::instance()->headers ?: [] as $i => $v) { |
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| 194 | 8 | if (stripos($i, '-locale') !== false) { |
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| 195 | 2 | $language = strtolower($v); |
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| 196 | 2 | if (@in_array($aliases[$language], $active_languages)) { |
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| 197 | 2 | return $aliases[$language]; |
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| 198 | } |
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| 199 | 8 | return false; |
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| 200 | } |
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| 201 | } |
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| 202 | 6 | return false; |
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| 203 | } |
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| 204 | /** |
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| 205 | * Get languages aliases |
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| 206 | * |
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| 207 | * @return array|false |
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| 208 | */ |
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| 209 | 32 | protected function get_aliases () { |
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| 210 | 32 | return Cache::instance()->get( |
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| 211 | 32 | 'languages/aliases', |
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| 212 | function () { |
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| 213 | 4 | $aliases = []; |
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| 214 | 4 | $aliases_list = _strtolower(get_files_list(LANGUAGES.'/aliases')); |
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| 215 | 4 | foreach ($aliases_list as $alias) { |
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| 216 | 4 | $aliases[$alias] = trim(file_get_contents(LANGUAGES."/aliases/$alias")); |
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| 217 | } |
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| 218 | 4 | return $aliases; |
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| 219 | 32 | } |
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| 220 | ); |
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| 221 | } |
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| 222 | /** |
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| 223 | * Get translation |
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| 224 | * |
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| 225 | * @param bool|string $item |
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| 226 | * @param false|string $language If specified - translation for specified language will be returned, otherwise for current |
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| 227 | * @param string $prefix Used by `\cs\Language\Prefix`, usually no need to use it directly |
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| 228 | * |
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| 229 | * @return string |
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| 230 | */ |
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| 231 | 50 | function get ($item, $language = false, $prefix = '') { |
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| 232 | 50 | $language = $language ?: $this->current_language; |
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| 233 | 50 | if (isset($this->translation[$language])) { |
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| 234 | 50 | $translation = $this->translation[$language]; |
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| 235 | 50 | if (isset($translation[$prefix.$item])) { |
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| 236 | 50 | return $translation[$prefix.$item]; |
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| 237 | 6 | } elseif (isset($translation[$item])) { |
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| 238 | 4 | return $translation[$item]; |
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| 239 | } |
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| 240 | 2 | return ucfirst(str_replace('_', ' ', $item)); |
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| 241 | } |
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| 242 | 48 | $current_language = $this->current_language; |
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| 243 | 48 | $this->change($language); |
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| 244 | 48 | $return = $this->get($item, $this->current_language, $prefix); |
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| 245 | 48 | $this->change($current_language); |
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| 246 | 48 | return $return; |
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| 247 | } |
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| 248 | /** |
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| 249 | * Set translation |
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| 250 | * |
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| 251 | * @param array|string $item Item string, or key-value array |
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| 252 | * @param null|string $value |
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| 253 | * |
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| 254 | * @return void |
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| 255 | */ |
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| 256 | function set ($item, $value = null) { |
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| 264 | /** |
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| 265 | * Get translation |
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| 266 | * |
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| 267 | * @param string $item |
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| 268 | * |
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| 269 | * @return string |
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| 270 | */ |
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| 271 | 50 | function __get ($item) { |
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| 272 | 50 | return $this->get($item); |
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| 273 | } |
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| 274 | /** |
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| 275 | * Set translation |
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| 276 | * |
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| 277 | * @param array|string $item |
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| 278 | * @param null|string $value |
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| 279 | * |
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| 280 | * @return string |
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| 281 | */ |
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| 282 | function __set ($item, $value = null) { |
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| 285 | /** |
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| 286 | * Change language |
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| 287 | * |
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| 288 | * @param string $language |
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| 289 | * |
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| 290 | * @return bool |
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| 291 | */ |
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| 292 | 50 | function change ($language) { |
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| 293 | /** |
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| 294 | * Already set to specified language |
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| 320 | /** |
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| 321 | * Check whether it is allowed to change to specified language according to configuration |
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| 322 | * |
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| 323 | * @param Config $Config |
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| 324 | * @param string $language |
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| 325 | * |
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| 326 | * @return bool |
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| 327 | */ |
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| 328 | 50 | protected function can_be_changed_to ($Config, $language) { |
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| 351 | /** |
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| 352 | * Load translation from all over the system, set `$this->translation[$language]` and return it |
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| 353 | * |
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| 354 | * @param $language |
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| 355 | * |
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| 356 | * @return string[] |
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| 357 | */ |
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| 358 | 10 | protected function get_translation_internal ($language) { |
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| 389 | /** |
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| 390 | * @param string $filename |
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| 391 | * |
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| 392 | * @return string[] |
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| 393 | */ |
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| 394 | 10 | protected function get_translation_from_json ($filename) { |
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| 399 | /** |
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| 400 | * @param string[]|string[][] $translation |
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| 401 | * |
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| 402 | * @return string[] |
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| 403 | */ |
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| 404 | 10 | protected function get_translation_from_json_internal ($translation) { |
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| 417 | /** |
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| 418 | * Some required keys might be missing in translation, this functions tries to guess and fill them automatically |
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| 419 | * |
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| 420 | * @param string[] $translation |
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| 421 | * @param string $language |
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| 422 | * |
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| 423 | * @return string[] |
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| 424 | */ |
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| 425 | 10 | protected function fill_required_translation_keys ($translation, $language) { |
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| 437 | /** |
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| 438 | * Time formatting according to the current language (adding correct endings) |
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| 439 | * |
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| 440 | * @param int $in time (number) |
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| 441 | * @param string $type Type of formatting<br> |
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| 442 | * s - seconds<br>m - minutes<br>h - hours<br>d - days<br>M - months<br>y - years |
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| 443 | * |
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| 444 | * @return string |
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| 445 | */ |
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| 446 | 4 | function time ($in, $type) { |
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| 468 | /** |
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| 469 | * Allows to use formatted strings in translations |
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| 470 | * |
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| 471 | * @see format() |
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| 472 | * |
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| 473 | * @param string $item |
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| 474 | * @param array $arguments |
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| 475 | * |
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| 476 | * @return string |
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| 477 | */ |
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| 478 | 2 | function __call ($item, $arguments) { |
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| 481 | /** |
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| 482 | * Allows to use formatted strings in translations |
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| 483 | * |
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| 484 | * @param string $item |
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| 485 | * @param string[] $arguments |
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| 486 | * @param false|string $language If specified - translation for specified language will be returned, otherwise for current |
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| 487 | * @param string $prefix Used by `\cs\Language\Prefix`, usually no need to use it directly |
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| 488 | * |
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| 489 | * @return string |
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| 490 | */ |
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| 491 | 6 | function format ($item, $arguments, $language = false, $prefix = '') { |
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| 494 | /** |
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| 495 | * Formatting date according to language locale (translating months names, days of week, etc.) |
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| 496 | * |
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| 497 | * @param string|string[] $data |
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| 498 | * @param bool $short_may When in date() or similar functions "M" format option is used, third month "May" have the same short textual |
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| 499 | * representation as full, so, this option allows to specify, which exactly form of representation do you want |
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| 500 | * |
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| 501 | * @return string|string[] |
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| 502 | */ |
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| 503 | 2 | function to_locale ($data, $short_may = false) { |
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| 558 | /** |
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| 559 | * Implementation of JsonSerializable interface |
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| 560 | * |
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| 561 | * @return string[] |
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| 562 | */ |
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| 563 | 4 | function jsonSerialize () { |
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| 566 | } |
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| 567 |
