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<?php |
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/* |
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* citeproc-php |
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* |
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* @link http://github.com/seboettg/citeproc-php for the source repository |
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* @copyright Copyright (c) 2016 Sebastian Böttger. |
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* @license https://opensource.org/licenses/MIT |
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*/ |
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namespace Seboettg\CiteProc\Locale; |
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use InvalidArgumentException; |
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use Seboettg\CiteProc\Exception\CiteProcException; |
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use Seboettg\CiteProc\StyleSheet; |
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use Seboettg\Collection\ArrayList; |
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use SimpleXMLElement; |
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use stdClass; |
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/** |
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* Class Locale |
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* |
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* While localization data can be included in styles, locale files conveniently provide sets of default localization |
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* data, consisting of terms, date formats and grammar options. These default localizations are drawn from the |
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* “locales-xx-XX.xml” located in locales folder (which is included as git submodule). These default locales may be |
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* redefined or supplemented with cs:locale elements, which should be placed in the style sheet directly after the |
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* cs:info element. |
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* |
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* TODO: implement Locale Fallback (http://docs.citationstyles.org/en/stable/specification.html#locale-fallback) |
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* |
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* @package Seboettg\CiteProc\Locale |
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* @author Sebastian Böttger <[email protected]> |
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*/ |
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class Locale |
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{ |
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use LocaleXmlParserTrait; |
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/** |
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* @var SimpleXMLElement |
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*/ |
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private $localeXml; |
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/** |
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* @var string |
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*/ |
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private $language; |
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/** |
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* Locale constructor. |
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* @param string $lang |
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* @param ?string $xmlString |
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* @throws CiteProcException |
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*/ |
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public function __construct($lang = "en-US", $xmlString = null) |
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{ |
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$this->language = $lang; |
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if (!empty($xmlString)) { |
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$this->localeXml = new SimpleXMLElement($xmlString); |
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} else { |
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$this->localeXml = new SimpleXMLElement(StyleSheet::loadLocales($lang)); |
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} |
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$this->initLocaleXmlParser(); |
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$this->parseXml($this->localeXml); |
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} |
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/** |
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* @param SimpleXMLElement $xml |
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* @return $this |
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*/ |
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public function addXml(SimpleXMLElement $xml) |
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{ |
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$lang = (string) $xml->attributes('http://www.w3.org/XML/1998/namespace')->{'lang'}; |
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if (empty($lang) || $this->getLanguage() === $lang || explode('-', $this->getLanguage())[0] === $lang) { |
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$this->parseXml($xml); |
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} |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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public function getLanguage() |
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{ |
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return $this->language; |
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} |
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/** |
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* @param string $type |
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* @param $name |
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* @param string $form |
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* @return stdClass |
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*/ |
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public function filter($type, $name, $form = "long") |
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{ |
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if ('options' === $type) { |
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return $this->option($name); |
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} |
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if (!isset($this->{$type})) { |
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throw new InvalidArgumentException("There is no locale of type \"$type\"."); |
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} |
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/** @var ArrayList $localeList */ |
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$localeList = $this->{$type}; |
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if (is_null($name)) { |
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$name = ""; |
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} |
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//filter by name |
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$array = $localeList->get($name); |
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if (empty($array)) { |
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$ret = new stdClass(); |
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$ret->name = null; |
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$ret->single = null; |
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$ret->multiple = null; |
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return $ret; |
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} |
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//filter by form |
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if ($type !== "options") { |
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/** @var Term $value */ |
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$array = array_filter($array, function ($term) use ($form) { |
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return $term->form === $form; |
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}); |
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} |
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return array_pop($array); |
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} |
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private function option($name) |
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{ |
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$result = null; |
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foreach ($this->options as $key => $value) { |
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if ($key === $name) { |
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if (is_array($value) && isset($value[1]) && is_array($value[1])) { |
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$result = reset($value[1]); |
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} else { |
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$result = reset($value); |
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} |
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} |
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} |
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return $result; |
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} |
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} |
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seboettg /
citeproc-php
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