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<?php |
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namespace Yiisoft\I18n; |
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/** |
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* Locale stores locale information created from BCP 47 formatted string |
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* https://tools.ietf.org/html/bcp47 |
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*/ |
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final class Locale |
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{ |
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/** |
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* @var string|null Two-letter ISO-639-2 language code |
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* @see http://www.loc.gov/standards/iso639-2/ |
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*/ |
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private $language; |
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/** |
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* @var string|null extended language subtags |
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*/ |
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private $extendedLanguage; |
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/** |
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* @var string|null |
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*/ |
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private $extension; |
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/** |
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* @var string|null Four-letter ISO 15924 script code |
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* @see http://www.unicode.org/iso15924/iso15924-codes.html |
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*/ |
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private $script; |
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/** |
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* @var string|null Two-letter ISO 3166-1 country code |
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* @see https://www.iso.org/iso-3166-country-codes.html |
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*/ |
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private $region; |
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/** |
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* @var string|null variant of language conventions to use |
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*/ |
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private $variant; |
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/** |
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* @var string|null ICU currency |
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*/ |
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private $currency; |
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/** |
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* @var string|null ICU calendar |
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*/ |
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private $calendar; |
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/** |
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* @var string ICU collation |
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*/ |
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private $collation; |
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/** |
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* @var string|null ICU numbers |
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*/ |
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private $numbers; |
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/** |
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* @var string|null |
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*/ |
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private $grandfathered; |
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/** |
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* @var string|null |
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*/ |
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private $private; |
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/** |
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* Locale constructor. |
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* @param string $localeString BCP 47 formatted locale string |
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* @see https://tools.ietf.org/html/bcp47 |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct(string $localeString) |
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{ |
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if (!preg_match(static::getBCP47Regex(), $localeString, $matches)) { |
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throw new \InvalidArgumentException($localeString . ' is not valid BCP 47 formatted locale string'); |
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} |
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if (!empty($matches['language'])) { |
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$this->language = strtolower($matches['language']); |
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} |
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if (!empty($matches['region'])) { |
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$this->region = strtoupper($matches['region']); |
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} |
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if (!empty($matches['variant'])) { |
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$this->variant = $matches['variant']; |
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} |
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if (!empty($matches['extendedLanguage'])) { |
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$this->extendedLanguage = $matches['extendedLanguage']; |
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} |
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if (!empty($matches['extension'])) { |
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$this->extension = $matches['extension']; |
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} |
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if (!empty($matches['script'])) { |
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$this->script = ucfirst(strtolower($matches['script'])); |
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} |
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if (!empty($matches['grandfathered'])) { |
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$this->grandfathered = $matches['grandfathered']; |
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} |
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if (!empty($matches['private'])) { |
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$this->private = preg_replace('~^x-~', '', $matches['private']); |
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} |
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if (!empty($matches['keywords'])) { |
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foreach (explode(';', $matches['keywords']) as $pair) { |
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[$key, $value] = explode('=', $pair); |
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if ($key === 'calendar') { |
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$this->calendar = $value; |
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} |
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if ($key === 'collation') { |
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$this->collation = $value; |
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} |
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if ($key === 'currency') { |
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$this->currency = $value; |
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} |
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if ($key === 'numbers') { |
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$this->numbers = $value; |
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} |
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} |
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} |
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} |
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/** |
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* @return string Four-letter ISO 15924 script code |
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* @see http://www.unicode.org/iso15924/iso15924-codes.html |
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*/ |
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public function script(): ?string |
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{ |
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return $this->script; |
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} |
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/** |
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* @param null|string $script Four-letter ISO 15924 script code |
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* @see http://www.unicode.org/iso15924/iso15924-codes.html |
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* @return self |
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*/ |
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public function withScript(?string $script): self |
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{ |
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$new = clone $this; |
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$new->script = $script; |
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return $new; |
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} |
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/** |
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* @return string variant of language conventions to use |
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*/ |
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public function variant(): ?string |
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{ |
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return $this->variant; |
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} |
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/** |
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* @param null|string $variant variant of language conventions to use |
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* @return self |
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*/ |
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public function withVariant(?string $variant): self |
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{ |
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$new = clone $this; |
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$new->variant = $variant; |
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return $new; |
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} |
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/** |
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* @return string|null Two-letter ISO-639-2 language code |
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* @see http://www.loc.gov/standards/iso639-2/ |
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*/ |
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public function language(): string |
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{ |
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return $this->language; |
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} |
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/** |
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* @param null|string $language Two-letter ISO-639-2 language code |
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* @see http://www.loc.gov/standards/iso639-2/ |
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* @return self |
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*/ |
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public function withLanguage(?string $language): self |
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{ |
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$new = clone $this; |
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$new->language = $language; |
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return $new; |
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} |
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/** |
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* @return null|string ICU calendar |
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*/ |
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public function calendar(): ?string |
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{ |
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return $this->calendar; |
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} |
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/** |
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* @param null|string $calendar ICU calendar |
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* @return self |
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*/ |
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public function withCalendar(?string $calendar): self |
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{ |
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$new = clone $this; |
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$new->calendar = $calendar; |
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return $new; |
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} |
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/** |
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* @return null|string ICU collation |
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*/ |
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public function collation(): ?string |
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{ |
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return $this->collation; |
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} |
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/** |
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* @param null|string $collation ICU collation |
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* @return self |
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*/ |
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public function withCollation(?string $collation): self |
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{ |
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$new = clone $this; |
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$new->collation = $collation; |
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return $new; |
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} |
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/** |
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* @return null|string ICU numbers |
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*/ |
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public function numbers(): ?string |
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{ |
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return $this->numbers; |
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} |
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/** |
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* @param null|string $numbers ICU numbers |
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* @return self |
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*/ |
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public function withNumbers(?string $numbers): self |
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{ |
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$new = clone $this; |
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$new->numbers = $numbers; |
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return $new; |
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} |
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/** |
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* @return string Two-letter ISO 3166-1 country code |
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* @see https://www.iso.org/iso-3166-country-codes.html |
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*/ |
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public function region(): ?string |
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{ |
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return $this->region; |
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} |
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/** |
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* @param null|string $region Two-letter ISO 3166-1 country code |
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* @see https://www.iso.org/iso-3166-country-codes.html |
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* @return self |
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*/ |
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public function withRegion(?string $region): self |
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{ |
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$new = clone $this; |
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$new->region = $region; |
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return $new; |
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} |
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/** |
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* @return string ICU currency |
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*/ |
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public function currency(): ?string |
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{ |
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return $this->currency; |
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} |
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/** |
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* @param null|string $currency ICU currency |
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* @return self |
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*/ |
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public function withCurrency(?string $currency): self |
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{ |
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$new = clone $this; |
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$new->currency = $currency; |
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return $new; |
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} |
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/** |
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* @return null|string extended language subtags |
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*/ |
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public function extendedLanguage(): ?string |
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{ |
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return $this->extendedLanguage; |
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} |
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/** |
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* @param null|string $extendedLanguage extended language subtags |
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* @return self |
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*/ |
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public function withExtendedLanguage(?string $extendedLanguage): self |
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{ |
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$new = clone $this; |
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$new->extendedLanguage = $extendedLanguage; |
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return $new; |
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} |
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/** |
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* @return null|string |
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*/ |
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public function private(): ?string |
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{ |
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return $this->private; |
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} |
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/** |
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* @param null|string $private |
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* @return self |
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*/ |
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public function withPrivate(?string $private): self |
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{ |
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$new = clone $this; |
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$new->private = $private; |
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return $new; |
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} |
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/** |
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* @return string regular expression for parsing BCP 47 |
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* @see https://tools.ietf.org/html/bcp47 |
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*/ |
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private static function getBCP47Regex(): string |
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{ |
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$regular = '(?:art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang)'; |
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$irregular = '(?:en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)'; |
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$grandfathered = '(?<grandfathered>' . $irregular . '|' . $regular . ')'; |
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$private = '(?<private>x(?:-[A-Za-z0-9]{1,8})+)'; |
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$singleton = '[0-9A-WY-Za-wy-z]'; |
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$extension = '(?<extension>' . $singleton . '(?:-[A-Za-z0-9]{2,8})+)'; |
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$variant = '(?<variant>[A-Za-z0-9]{5,8}|[0-9][A-Za-z0-9]{3})'; |
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$region = '(?<region>[A-Za-z]{2}|[0-9]{3})'; |
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$script = '(?<script>[A-Za-z]{4})'; |
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$extendedLanguage = '(?<extendedLanguage>[A-Za-z]{3}(?:-[A-Za-z]{3}){0,2})'; |
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$language = '(?<language>[A-Za-z]{4,8})|(?<language>[A-Za-z]{2,3})(?:-' . $extendedLanguage . ')?'; |
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$icuKeywords = '(?:@(?<keywords>.*?))?'; |
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$languageTag = '(?:' . $language . '(?:-' . $script . ')?' . '(?:-' . $region . ')?' . '(?:-' . $variant . ')*' . '(?:-' . $extension . ')*' . '(?:-' . $private . ')?' . ')'; |
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return '/^(?J:' . $grandfathered . '|' . $languageTag . '|' . $private . ')' . $icuKeywords . '$/'; |
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} |
363
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public function __toString(): string |
365
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{ |
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return $this->asString(); |
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} |
368
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369
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/** |
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* @return string |
371
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*/ |
372
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public function asString(): string |
373
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{ |
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if ($this->grandfathered !== null) { |
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return $this->grandfathered; |
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} |
377
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378
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$result = []; |
379
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if ($this->language !== null) { |
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$result[] = $this->language; |
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382
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if ($this->extendedLanguage !== null) { |
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$result[] = $this->extendedLanguage; |
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} |
385
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386
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if ($this->script !== null) { |
387
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$result[] = $this->script; |
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} |
389
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|
390
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if ($this->region !== null) { |
391
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|
|
$result[] = $this->region; |
392
|
|
|
} |
393
|
|
|
|
394
|
|
|
if ($this->variant !== null) { |
395
|
|
|
$result[] = $this->variant; |
396
|
|
|
} |
397
|
|
|
|
398
|
|
|
if ($this->extension !== null) { |
399
|
|
|
$result[] = $this->extension; |
400
|
|
|
} |
401
|
|
|
} |
402
|
|
|
|
403
|
|
|
if ($this->private !== null) { |
404
|
|
|
$result[] = 'x-' . $this->private; |
405
|
|
|
} |
406
|
|
|
|
407
|
|
|
$keywords = []; |
408
|
|
|
if ($this->currency !== null) { |
409
|
|
|
$keywords[] = 'currency=' . $this->currency; |
410
|
|
|
} |
411
|
|
|
if ($this->collation !== null) { |
412
|
|
|
$keywords[] = 'collation=' . $this->collation; |
413
|
|
|
} |
414
|
|
|
if ($this->calendar !== null) { |
415
|
|
|
$keywords[] = 'calendar=' . $this->calendar; |
416
|
|
|
} |
417
|
|
|
if ($this->numbers !== null) { |
418
|
|
|
$keywords[] = 'numbers=' . $this->numbers; |
419
|
|
|
} |
420
|
|
|
|
421
|
|
|
$string = implode('-', $result); |
422
|
|
|
|
423
|
|
|
if ($keywords !== []) { |
424
|
|
|
$string .= '@' . implode(';', $keywords); |
425
|
|
|
} |
426
|
|
|
|
427
|
|
|
return $string; |
428
|
|
|
} |
429
|
|
|
|
430
|
|
|
/** |
431
|
|
|
* Returns fallback locale |
432
|
|
|
* |
433
|
|
|
* @return self fallback locale |
434
|
|
|
*/ |
435
|
|
|
public function fallbackLocale(): self |
436
|
|
|
{ |
437
|
|
|
$fallback = $this |
438
|
|
|
->withCalendar(null) |
439
|
|
|
->withCollation(null) |
440
|
|
|
->withCurrency(null) |
441
|
|
|
->withExtendedLanguage(null) |
442
|
|
|
->withNumbers(null) |
443
|
|
|
->withPrivate(null); |
444
|
|
|
|
445
|
|
|
if ($fallback->variant() !== null) { |
446
|
|
|
return $fallback->withVariant(null); |
447
|
|
|
} |
448
|
|
|
|
449
|
|
|
if ($fallback->region() !== null) { |
450
|
|
|
return $fallback->withRegion(null); |
451
|
|
|
} |
452
|
|
|
|
453
|
|
|
if ($fallback->script() !== null) { |
454
|
|
|
return $fallback->withScript(null); |
455
|
|
|
} |
456
|
|
|
|
457
|
|
|
return $fallback; |
458
|
|
|
} |
459
|
|
|
} |
460
|
|
|
|
Late static binding only has effect in subclasses. A
final
class cannot be extended anymore so late static binding cannot occurr. Consider replacingstatic::
withself::
.To learn more about late static binding, please refer to the PHP core documentation.