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<?php |
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namespace Pmochine\LaravelTongue\Localization; |
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use Illuminate\Http\Request; |
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use Locale; |
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/** |
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* Class was originally written by Mcamara. |
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* Visit the package! |
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* https://github.com/mcamara/laravel-localization. |
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*/ |
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class TongueDetector |
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{ |
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/** |
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* @var string |
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*/ |
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private $fallbackLocale; |
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/** |
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* @var array |
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*/ |
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private $supportedLanguages; |
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/** |
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* @var Request |
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*/ |
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private $request; |
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/** |
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* @var bool |
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*/ |
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private $use_intl = false; |
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/** |
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* @param string $fallbackLocale |
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* @param array $supportedLanguages |
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* @param Request $request |
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*/ |
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public function __construct($fallbackLocale, $supportedLanguages, Request $request) |
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{ |
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$this->fallbackLocale = $fallbackLocale; |
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$this->canonicalize($supportedLanguages); |
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$this->request = $request; |
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} |
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/** |
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* Negotiates language with the user's browser through the Accept-Language |
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* HTTP header or the user's host address. Language codes are generally in |
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* the form "ll" for a language spoken in only one country, or "ll-CC" for a |
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* language spoken in a particular country. For example, U.S. English is |
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* "en-US", while British English is "en-UK". Portuguese as spoken in |
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* Portugal is "pt-PT", while Brazilian Portuguese is "pt-BR". |
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* |
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* This function is based on negotiateLanguage from Pear HTTP2 |
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* http://pear.php.net/package/HTTP2/ |
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* |
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* Quality factors in the Accept-Language: header are supported, e.g.: |
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* Accept-Language: en-UK;q=0.7, en-US;q=0.6, no, dk;q=0.8 |
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* |
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* @return string The negotiated language result or app.locale. |
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*/ |
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public function negotiateLanguage() |
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{ |
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$matches = $this->getMatchesFromAcceptedLanguages(); |
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foreach ($matches as $key => $q) { |
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if (! empty($this->supportedLanguages[$key])) { |
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return $key; |
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} |
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if ($this->use_intl) { |
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$key = Locale::canonicalize($key); |
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} |
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// Search for acceptable locale by 'regional' => 'af_ZA' or 'lang' => 'af-ZA' match. |
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foreach ($this->supportedLanguages as $key_supported => $locale) { |
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if ((isset($locale['regional']) && $locale['regional'] == $key) |
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|| (isset($locale['lang']) && $locale['lang'] == $key) |
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) { |
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return $key_supported; |
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} |
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} |
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} |
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// If any (i.e. "*") is acceptable, return the first supported format |
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if (isset($matches['*'])) { |
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reset($this->supportedLanguages); |
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return key($this->supportedLanguages); |
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} |
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if ($this->use_intl && ! empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { |
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$http_accept_language = Locale::acceptFromHttp($_SERVER['HTTP_ACCEPT_LANGUAGE']); |
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if (! empty($this->supportedLanguages[$http_accept_language])) { |
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return $http_accept_language; |
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} |
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} |
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if ($this->request->server('REMOTE_HOST')) { |
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$remote_host = explode('.', $this->request->server('REMOTE_HOST')); |
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$lang = strtolower(end($remote_host)); |
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if (! empty($this->supportedLanguages[$lang])) { |
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return $lang; |
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} |
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} |
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return $this->fallbackLocale; |
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} |
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/** |
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* Return all the accepted languages from the browser. |
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* |
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* @return array Matches from the header field Accept-Languages |
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*/ |
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private function getMatchesFromAcceptedLanguages() |
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{ |
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$matches = []; |
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if ($acceptLanguages = $this->request->header('Accept-Language')) { |
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$acceptLanguages = explode(',', $acceptLanguages); |
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$generic_matches = []; |
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foreach ($acceptLanguages as $option) { |
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$option = array_map('trim', explode(';', $option)); |
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$l = $option[0]; |
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if (isset($option[1])) { |
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$q = (float) str_replace('q=', '', $option[1]); |
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} else { |
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$q = null; |
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// Assign default low weight for generic values |
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if ($l == '*/*') { |
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$q = 0.01; |
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} elseif (substr($l, -1) == '*') { |
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$q = 0.02; |
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} |
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} |
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// Unweighted values, get high weight by their position in the |
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// list |
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$q = isset($q) ? $q : 1000 - count($matches); |
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$matches[$l] = $q; |
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//If for some reason the Accept-Language header only sends language with country |
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//we should make the language without country an accepted option, with a value |
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//less than it's parent. |
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$l_ops = explode('-', $l); |
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array_pop($l_ops); |
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while (! empty($l_ops)) { |
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//The new generic option needs to be slightly less important than it's base |
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$q -= 0.001; |
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$op = implode('-', $l_ops); |
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if (empty($generic_matches[$op]) || $generic_matches[$op] > $q) { |
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$generic_matches[$op] = $q; |
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} |
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array_pop($l_ops); |
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} |
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} |
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$matches = array_merge($generic_matches, $matches); |
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arsort($matches, SORT_NUMERIC); |
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} |
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return $matches; |
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} |
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/** |
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* Set the supportedLanguages using |
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* http://php.net/manual/de/locale.canonicalize.php. |
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*/ |
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protected function canonicalize($supportedLanguages) |
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{ |
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if (class_exists('Locale')) { |
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$this->use_intl = true; |
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foreach ($supportedLanguages as $key => $language) { |
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if (isset($language['lang'])) { |
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$language['lang'] = Locale::canonicalize($language['lang']); |
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} else { |
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$language['lang'] = Locale::canonicalize($key); |
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} |
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if (isset($language['regional'])) { |
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$language['regional'] = Locale::canonicalize($language['regional']); |
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} |
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$this->supportedLanguages[$key] = $language; |
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} |
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} else { |
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$this->supportedLanguages = $supportedLanguages; |
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} |
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} |
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} |
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pmochine /
Laravel-Tongue
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: