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authorgit-marijus <mario@mariovavti.com>2017-11-04 10:22:58 +0100
committerGitHub <noreply@github.com>2017-11-04 10:22:58 +0100
commitcfbeb1655daba511f4843b8ba070a247e233fb29 (patch)
tree8ef7bf1e06a5d223228b370121bda97695af7d0e /vendor/commerceguys/intl/src/LocaleResolverTrait.php
parent1a737be2b408135177a9e94dcffd0f68c0aca90b (diff)
parent39c194c5c32e49f461b8b42a3f4e411a3a5cde3c (diff)
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Merge branch 'dev' into docu
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+<?php
+
+namespace CommerceGuys\Intl;
+
+use CommerceGuys\Intl\Exception\UnknownLocaleException;
+
+trait LocaleResolverTrait
+{
+ /**
+ * The path where per-locale definitions are stored.
+ *
+ * @var string
+ */
+ protected $definitionPath;
+
+ /**
+ * The default locale.
+ *
+ * @var string
+ */
+ protected $defaultLocale = 'en';
+
+ /**
+ * The fallback locale.
+ *
+ * @var string
+ */
+ protected $fallbackLocale = null;
+
+ /**
+ * Common locale aliases.
+ *
+ * @var array
+ */
+ protected $localeAliases = [
+ 'az-AZ' => 'az-Latn-AZ',
+ 'bs-BA' => 'bs-Latn-BA',
+ 'ha-GH' => 'ha-Latn-GH',
+ 'ha-NE' => 'ha-Latn-NE',
+ 'ha-NG' => 'ha-Latn-NG',
+ 'in' => 'id',
+ 'in-ID' => 'id-ID',
+ 'iw' => 'he',
+ 'iw-IL' => 'he-IL',
+ 'kk-KZ' => 'kk-Cyrl-KZ',
+ 'ks-IN' => 'ks-Arab-IN',
+ 'ky-KG' => 'ky-Cyrl-KG',
+ 'mn-MN' => 'mn-Cyrl-MN',
+ 'mo' => 'ro-MD',
+ 'ms-BN' => 'ms-Latn-BN',
+ 'ms-MY' => 'ms-Latn-MY',
+ 'ms-SG' => 'ms-Latn-SG',
+ 'no' => 'nb',
+ 'no-NO' => 'nb-NO',
+ 'no-NO-NY' => 'nn-NO',
+ 'pa-IN' => 'pa-Guru-IN',
+ 'pa-PK' => 'pa-Arab-PK',
+ 'sh' => 'sr-Latn',
+ 'sh-BA' => 'sr-Latn-BA',
+ 'sh-CS' => 'sr-Latn-RS',
+ 'sh-YU' => 'sr-Latn-RS',
+ 'shi-MA' => 'shi-Tfng-MA',
+ 'sr-BA' => 'sr-Cyrl-BA',
+ 'sr-ME' => 'sr-Latn-ME',
+ 'sr-RS' => 'sr-Cyrl-RS',
+ 'sr-XK' => 'sr-Cyrl-XK',
+ 'tl' => 'fil',
+ 'tl-PH' => 'fil-PH',
+ 'tzm-MA' => 'tzm-Latn-MA',
+ 'ug-CN' => 'ug-Arab-CN',
+ 'uz-AF' => 'uz-Arab-AF',
+ 'uz-UZ' => 'uz-Latn-UZ',
+ 'vai-LR' => 'vai-Vaii-LR',
+ 'zh-CN' => 'zh-Hans-CN',
+ 'zh-HK' => 'zh-Hant-HK',
+ 'zh-MO' => 'zh-Hant-MO',
+ 'zh-SG' => 'zh-Hans-SG',
+ 'zh-TW' => 'zh-Hant-TW',
+ ];
+
+ /**
+ * Determines which locale should be used for loading definitions.
+ *
+ * If the "bs-Cyrl-BA" locale is requested, with an "en" fallback,
+ * the system will try to find the definitions for:
+ * 1) bs-Cyrl-BA
+ * 2) bs-Cyrl
+ * 3) bs
+ * 4) en
+ * The first locale for which a definition file is found, wins.
+ * Otherwise, an exception is thrown.
+ *
+ * @param string $locale The desired locale (i.e. fr-FR).
+ * @param string $fallbackLocale A fallback locale (i.e "en").
+ *
+ * @return string
+ *
+ * @throws UnknownLocaleException
+ */
+ protected function resolveLocale($locale = null, $fallbackLocale = null)
+ {
+ $locale = $locale ?: $this->getDefaultLocale();
+ $locale = $this->canonicalizeLocale($locale);
+ $locale = $this->resolveLocaleAlias($locale);
+ // List all possible variants (i.e. en-US gives "en-US" and "en").
+ $localeVariants = $this->getLocaleVariants($locale);
+ // A fallback locale was provided, add it to the end of the chain.
+ $fallbackLocale = $fallbackLocale ?: $this->getFallbackLocale();
+ if (isset($fallbackLocale)) {
+ $localeVariants[] = $fallbackLocale;
+ }
+
+ // Try to resolve a locale by finding a matching definition file.
+ $resolvedLocale = null;
+ foreach ($localeVariants as $localeVariant) {
+ $path = $this->definitionPath . $localeVariant . '.json';
+ if (file_exists($path)) {
+ $resolvedLocale = $localeVariant;
+ break;
+ }
+ }
+ // No locale could be resolved, stop here.
+ if (!$resolvedLocale) {
+ throw new UnknownLocaleException($locale);
+ }
+
+ return $resolvedLocale;
+ }
+
+ /**
+ * Resolves known locale aliases.
+ *
+ * For example, "zh-CN" is resolved to "zh-Hans-CN".
+ *
+ * @param string $locale The locale.
+ *
+ * @return string The locale.
+ */
+ protected function resolveLocaleAlias($locale = null)
+ {
+ if ($locale && isset($this->localeAliases[$locale])) {
+ $locale = $this->localeAliases[$locale];
+ }
+
+ return $locale;
+ }
+
+ /**
+ * Canonicalize the given locale.
+ *
+ * @param string $locale The locale.
+ *
+ * @return string The canonicalized locale.
+ */
+ protected function canonicalizeLocale($locale = null)
+ {
+ if (is_null($locale)) {
+ return $locale;
+ }
+
+ $locale = str_replace('-', '_', strtolower($locale));
+ $localeParts = explode('_', $locale);
+ foreach ($localeParts as $index => $part) {
+ if ($index === 0) {
+ // The language code should stay lowercase.
+ continue;
+ }
+
+ if (strlen($part) == 4) {
+ // Script code.
+ $localeParts[$index] = ucfirst($part);
+ } else {
+ // Country or variant code.
+ $localeParts[$index] = strtoupper($part);
+ }
+ }
+
+ return implode('-', $localeParts);
+ }
+
+ /**
+ * Gets the default locale.
+ *
+ * @return string The default locale.
+ */
+ public function getDefaultLocale()
+ {
+ return $this->defaultLocale;
+ }
+
+ /**
+ * Sets the default locale.
+ *
+ * @return void
+ */
+ public function setDefaultLocale($locale)
+ {
+ $this->defaultLocale = $locale;
+ }
+
+ /**
+ * Gets the fallback locale.
+ *
+ * @return string The fallback locale.
+ */
+ public function getFallbackLocale()
+ {
+ return $this->fallbackLocale;
+ }
+
+ /**
+ * Sets the fallback locale.
+ *
+ * @return void
+ */
+ public function setFallbackLocale($locale)
+ {
+ $this->fallbackLocale = $locale;
+ }
+
+ /**
+ * Gets all variants of a locale.
+ *
+ * For example, "bs-Cyrl-BA" has the following variants:
+ * 1) bs-Cyrl-BA
+ * 2) bs-Cyrl
+ * 3) bs
+ *
+ * @param string $locale The locale (i.e. fr-FR).
+ *
+ * @return array An array of all variants of a locale.
+ */
+ protected function getLocaleVariants($locale)
+ {
+ $localeVariants = [];
+ $localeParts = explode('-', $locale);
+ while (!empty($localeParts)) {
+ $localeVariants[] = implode('-', $localeParts);
+ array_pop($localeParts);
+ }
+
+ return $localeVariants;
+ }
+}