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<?php |
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namespace Gettext; |
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use Gettext\Generators\PhpArray; |
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class Translator extends BaseTranslator implements TranslatorInterface |
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{ |
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private $domain; |
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private $dictionary = []; |
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private $plurals = []; |
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/** |
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* Loads translation from a Translations instance, a file on an array. |
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* |
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* @param Translations|string|array $translations |
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* |
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* @return self |
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*/ |
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public function loadTranslations($translations) |
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{ |
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if (is_object($translations) && $translations instanceof Translations) { |
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$translations = PhpArray::generate($translations); |
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} elseif (is_string($translations) && is_file($translations)) { |
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$translations = include $translations; |
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} elseif (!is_array($translations)) { |
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throw new \InvalidArgumentException('Invalid Translator: only arrays, files or instance of Translations are allowed'); |
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} |
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$this->addTranslations($translations); |
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return $this; |
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} |
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/** |
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* Set the default domain. |
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* |
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* @param string $domain |
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* |
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* @return self |
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*/ |
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public function defaultDomain($domain) |
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{ |
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$this->domain = $domain; |
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return $this; |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function gettext($original) |
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{ |
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return $this->dpgettext($this->domain, null, $original); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function ngettext($original, $plural, $value) |
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{ |
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return $this->dnpgettext($this->domain, null, $original, $plural, $value); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function dngettext($domain, $original, $plural, $value) |
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{ |
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return $this->dnpgettext($domain, null, $original, $plural, $value); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function npgettext($context, $original, $plural, $value) |
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{ |
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return $this->dnpgettext($this->domain, $context, $original, $plural, $value); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function pgettext($context, $original) |
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{ |
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return $this->dpgettext($this->domain, $context, $original); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function dgettext($domain, $original) |
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{ |
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return $this->dpgettext($domain, null, $original); |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function dpgettext($domain, $context, $original) |
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{ |
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$translation = $this->getTranslation($domain, $context, $original); |
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if (isset($translation[0]) && $translation[0] !== '') { |
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return $translation[0]; |
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} |
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return $original; |
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} |
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/** |
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* @see TranslatorInterface |
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* |
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* {@inheritdoc} |
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*/ |
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public function dnpgettext($domain, $context, $original, $plural, $value) |
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{ |
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$key = $this->getPluralIndex($domain, $value); |
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$translation = $this->getTranslation($domain, $context, $original); |
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if (isset($translation[$key]) && $translation[$key] !== '') { |
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return $translation[$key]; |
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} |
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return ($key === 0) ? $original : $plural; |
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} |
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/** |
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* Set new translations to the dictionary. |
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* |
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* @param array $translations |
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*/ |
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protected function addTranslations(array $translations) |
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{ |
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$domain = isset($translations['domain']) ? $translations['domain'] : ''; |
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//Set the first domain loaded as default domain |
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if ($this->domain === null) { |
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$this->domain = $domain; |
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} |
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if (isset($this->dictionary[$domain])) { |
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$this->dictionary[$domain] = array_replace_recursive($this->dictionary[$domain], $translations['messages']); |
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return; |
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} |
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if (!empty($translations['plural-forms'])) { |
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list($count, $code) = array_map('trim', explode(';', $translations['plural-forms'], 2)); |
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// extract just the expression turn 'n' into a php variable '$n'. |
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// Slap on a return keyword and semicolon at the end. |
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$this->plurals[$domain] = [ |
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'count' => (int) str_replace('nplurals=', '', $count), |
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'code' => str_replace('plural=', 'return ', str_replace('n', '$n', $code)).';', |
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]; |
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} |
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$this->dictionary[$domain] = $translations['messages']; |
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} |
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/** |
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* Search and returns a translation. |
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* |
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* @param string $domain |
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* @param string $context |
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* @param string $original |
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* |
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* @return string|false |
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*/ |
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protected function getTranslation($domain, $context, $original) |
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{ |
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return isset($this->dictionary[$domain][$context][$original]) ? $this->dictionary[$domain][$context][$original] : false; |
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} |
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/** |
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* Executes the plural decision code given the number to decide which |
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* plural version to take. |
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* |
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* @param string $domain |
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* @param string $n |
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* |
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* @return int |
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*/ |
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protected function getPluralIndex($domain, $n) |
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{ |
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//Not loaded domain, use a fallback |
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if (!isset($this->plurals[$domain])) { |
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return $n == 1 ? 0 : 1; |
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} |
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if (!isset($this->plurals[$domain]['function'])) { |
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$this->plurals[$domain]['function'] = create_function('$n', self::fixTerseIfs($this->plurals[$domain]['code'])); |
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} |
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if ($this->plurals[$domain]['count'] <= 2) { |
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return call_user_func($this->plurals[$domain]['function'], $n) ? 1 : 0; |
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} |
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return call_user_func($this->plurals[$domain]['function'], $n); |
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} |
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/** |
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* This function will recursively wrap failure states in brackets if they contain a nested terse if. |
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* |
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* This because PHP can not handle nested terse if's unless they are wrapped in brackets. |
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* |
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* This code probably only works for the gettext plural decision codes. |
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* |
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* return ($n==1 ? 0 : $n%10>=2 && $n%10<=4 && ($n%100<10 || $n%100>=20) ? 1 : 2); |
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* becomes |
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* return ($n==1 ? 0 : ($n%10>=2 && $n%10<=4 && ($n%100<10 || $n%100>=20) ? 1 : 2)); |
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* |
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* @param string $code the terse if string |
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* @param bool $inner If inner is true we wrap it in brackets |
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* |
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* @return string A formatted terse If that PHP can work with. |
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*/ |
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private static function fixTerseIfs($code, $inner = false) |
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{ |
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/* |
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* (?P<expression>[^?]+) Capture everything up to ? as 'expression' |
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* \? ? |
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* (?P<success>[^:]+) Capture everything up to : as 'success' |
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* : : |
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* (?P<failure>[^;]+) Capture everything up to ; as 'failure' |
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*/ |
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preg_match('/(?P<expression>[^?]+)\?(?P<success>[^:]+):(?P<failure>[^;]+)/', $code, $matches); |
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// If no match was found then no terse if was present |
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if (!isset($matches[0])) { |
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return $code; |
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} |
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$expression = $matches['expression']; |
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$success = $matches['success']; |
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$failure = $matches['failure']; |
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// Go look for another terse if in the failure state. |
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$failure = self::fixTerseIfs($failure, true); |
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$code = $expression.' ? '.$success.' : '.$failure; |
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if ($inner) { |
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return "($code)"; |
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} |
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// note the semicolon. We need that for executing the code. |
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return "$code;"; |
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} |
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} |
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oscarotero /
Gettext
