Translator.php
283 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Matomo - free/libre analytics platform |
| 4 | * |
| 5 | * @link https://matomo.org |
| 6 | * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later |
| 7 | */ |
| 8 | |
| 9 | namespace Piwik\Translation; |
| 10 | |
| 11 | use Piwik\Config; |
| 12 | use Piwik\Piwik; |
| 13 | use Piwik\Translation\Loader\LoaderInterface; |
| 14 | |
| 15 | /** |
| 16 | * Translates messages. |
| 17 | * |
| 18 | * @api |
| 19 | */ |
| 20 | class Translator |
| 21 | { |
| 22 | /** |
| 23 | * Contains the translated messages, indexed by the language name. |
| 24 | * |
| 25 | * @var array |
| 26 | */ |
| 27 | private $translations = array(); |
| 28 | |
| 29 | /** |
| 30 | * @var string |
| 31 | */ |
| 32 | private $currentLanguage; |
| 33 | |
| 34 | /** |
| 35 | * @var string |
| 36 | */ |
| 37 | private $fallback = 'en'; |
| 38 | |
| 39 | /** |
| 40 | * Directories containing the translations to load. |
| 41 | * |
| 42 | * @var string[] |
| 43 | */ |
| 44 | private $directories = array(); |
| 45 | |
| 46 | /** |
| 47 | * @var LoaderInterface |
| 48 | */ |
| 49 | private $loader; |
| 50 | |
| 51 | public function __construct(LoaderInterface $loader, array $directories = null) |
| 52 | { |
| 53 | $this->loader = $loader; |
| 54 | $this->currentLanguage = $this->getDefaultLanguage(); |
| 55 | |
| 56 | if ($directories === null) { |
| 57 | // TODO should be moved out of this class |
| 58 | $directories = array(PIWIK_INCLUDE_PATH . '/lang'); |
| 59 | } |
| 60 | $this->directories = $directories; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Clean a string that may contain HTML special chars, single/double quotes, HTML entities, leading/trailing whitespace |
| 65 | * |
| 66 | * @param string $s |
| 67 | * @return string |
| 68 | */ |
| 69 | public static function clean($s) |
| 70 | { |
| 71 | return html_entity_decode(trim($s), ENT_QUOTES, 'UTF-8'); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Returns an internationalized string using a translation ID. If a translation |
| 76 | * cannot be found for the ID, the ID is returned. |
| 77 | * |
| 78 | * @param string $translationId Translation ID, eg, `General_Date`. |
| 79 | * @param array|string|int $args `sprintf` arguments to be applied to the internationalized |
| 80 | * string. |
| 81 | * @param string|null $language Optionally force the language. |
| 82 | * @return string The translated string or `$translationId`. |
| 83 | * @api |
| 84 | */ |
| 85 | public function translate($translationId, $args = array(), $language = null) |
| 86 | { |
| 87 | $args = is_array($args) ? $args : array($args); |
| 88 | $translationId = $translationId ?? ''; |
| 89 | |
| 90 | if (strpos($translationId, "_") !== false) { |
| 91 | list($plugin, $key) = explode("_", $translationId, 2); |
| 92 | $language = is_string($language) ? $language : $this->currentLanguage; |
| 93 | |
| 94 | $translationId = $this->getTranslation($translationId, $language, $plugin, $key); |
| 95 | } |
| 96 | |
| 97 | if (count($args) == 0) { |
| 98 | return str_replace('%%', '%', $translationId); |
| 99 | } |
| 100 | return vsprintf($translationId, $args); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @return string |
| 105 | */ |
| 106 | public function getCurrentLanguage() |
| 107 | { |
| 108 | return $this->currentLanguage; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @param string $language |
| 113 | */ |
| 114 | public function setCurrentLanguage($language) |
| 115 | { |
| 116 | if (!$language) { |
| 117 | $language = $this->getDefaultLanguage(); |
| 118 | } |
| 119 | |
| 120 | $this->currentLanguage = $language; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * @return string The default configured language. |
| 125 | */ |
| 126 | public function getDefaultLanguage() |
| 127 | { |
| 128 | $generalSection = Config::getInstance()->General; |
| 129 | |
| 130 | // the config may not be available (for example, during environment setup), so we default to 'en' |
| 131 | // if the config cannot be found. |
| 132 | return @$generalSection['default_language'] ?: 'en'; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Generate javascript translations array |
| 137 | */ |
| 138 | public function getJavascriptTranslations() |
| 139 | { |
| 140 | $clientSideTranslations = array(); |
| 141 | foreach ($this->getClientSideTranslationKeys() as $id) { |
| 142 | list($plugin, $key) = explode('_', $id, 2); |
| 143 | $clientSideTranslations[$id] = $this->getTranslation($id, $this->currentLanguage, $plugin, $key); |
| 144 | } |
| 145 | |
| 146 | $js = 'var translations = ' . json_encode($clientSideTranslations) . ';'; |
| 147 | $js .= "\n" . 'if (typeof(piwik_translations) == \'undefined\') { var piwik_translations = new Object; }' . |
| 148 | 'for(var i in translations) { piwik_translations[i] = translations[i];} '; |
| 149 | return $js; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Returns the list of client side translations by key. These translations will be outputted |
| 154 | * to the translation JavaScript. |
| 155 | */ |
| 156 | private function getClientSideTranslationKeys() |
| 157 | { |
| 158 | $result = array(); |
| 159 | |
| 160 | /** |
| 161 | * Triggered before generating the JavaScript code that allows i18n strings to be used |
| 162 | * in the browser. |
| 163 | * |
| 164 | * Plugins should subscribe to this event to specify which translations |
| 165 | * should be available to JavaScript. |
| 166 | * |
| 167 | * Event handlers should add whole translation keys, ie, keys that include the plugin name. |
| 168 | * |
| 169 | * **Example** |
| 170 | * |
| 171 | * public function getClientSideTranslationKeys(&$result) |
| 172 | * { |
| 173 | * $result[] = "MyPlugin_MyTranslation"; |
| 174 | * } |
| 175 | * |
| 176 | * @param array &$result The whole list of client side translation keys. |
| 177 | */ |
| 178 | Piwik::postEvent('Translate.getClientSideTranslationKeys', array(&$result)); |
| 179 | |
| 180 | $result = array_unique($result); |
| 181 | |
| 182 | return $result; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Add a directory containing translations. |
| 187 | * |
| 188 | * @param string $directory |
| 189 | */ |
| 190 | public function addDirectory($directory) |
| 191 | { |
| 192 | if (isset($this->directories[$directory])) { |
| 193 | return; |
| 194 | } |
| 195 | // index by name to avoid duplicates |
| 196 | $this->directories[$directory] = $directory; |
| 197 | |
| 198 | // clear currently loaded translations to force reloading them |
| 199 | $this->translations = array(); |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Should be used by tests only, and this method should eventually be removed. |
| 204 | */ |
| 205 | public function reset() |
| 206 | { |
| 207 | $this->currentLanguage = $this->getDefaultLanguage(); |
| 208 | $this->directories = array(PIWIK_INCLUDE_PATH . '/lang'); |
| 209 | $this->translations = array(); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * @param string $translation |
| 214 | * @return null|string |
| 215 | */ |
| 216 | public function findTranslationKeyForTranslation($translation) |
| 217 | { |
| 218 | foreach ($this->getAllTranslations() as $key => $translations) { |
| 219 | $possibleKey = array_search($translation, $translations); |
| 220 | if (!empty($possibleKey)) { |
| 221 | return $key . '_' . $possibleKey; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | return null; |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Returns all the translation messages loaded. |
| 230 | * |
| 231 | * @return array |
| 232 | */ |
| 233 | public function getAllTranslations() |
| 234 | { |
| 235 | $this->loadTranslations($this->currentLanguage); |
| 236 | |
| 237 | if (!isset($this->translations[$this->currentLanguage])) { |
| 238 | return array(); |
| 239 | } |
| 240 | |
| 241 | return $this->translations[$this->currentLanguage]; |
| 242 | } |
| 243 | |
| 244 | private function getTranslation($id, $lang, $plugin, $key) |
| 245 | { |
| 246 | $this->loadTranslations($lang); |
| 247 | |
| 248 | if (isset($this->translations[$lang][$plugin]) |
| 249 | && isset($this->translations[$lang][$plugin][$key]) |
| 250 | ) { |
| 251 | return $this->translations[$lang][$plugin][$key]; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Fallback for keys moved to new Intl plugin to avoid untranslated string in non core plugins |
| 256 | * @todo remove this in Piwik 3.0 |
| 257 | */ |
| 258 | if ($plugin != 'Intl') { |
| 259 | if (isset($this->translations[$lang]['Intl']) |
| 260 | && isset($this->translations[$lang]['Intl'][$key]) |
| 261 | ) { |
| 262 | return $this->translations[$lang]['Intl'][$key]; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | // fallback |
| 267 | if ($lang !== $this->fallback) { |
| 268 | return $this->getTranslation($id, $this->fallback, $plugin, $key); |
| 269 | } |
| 270 | |
| 271 | return $id; |
| 272 | } |
| 273 | |
| 274 | private function loadTranslations($language) |
| 275 | { |
| 276 | if (empty($language) || isset($this->translations[$language])) { |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | $this->translations[$language] = $this->loader->load($language, $this->directories); |
| 281 | } |
| 282 | } |
| 283 |