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<?php |
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declare(strict_types=1); |
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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; |
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use Seboettg\CiteProc\Exception\CiteProcException; |
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/** |
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* Class StyleSheet |
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* |
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* Helper class for loading CSL styles and CSL locales |
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* |
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* @package Seboettg\CiteProc |
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* @author Sebastian Böttger <[email protected]> |
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*/ |
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class StyleSheet |
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{ |
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/** |
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* Loads xml formatted CSL stylesheet of a given stylesheet name, e.g. "american-physiological-society" for |
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* apa style. |
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* |
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* See in styles folder (which is included as git submodule) for all available style sheets |
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* |
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* @param string $styleName e.g. "american-physiological-society" for apa |
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* @return string |
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* @throws CiteProcException |
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*/ |
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public static function loadStyleSheet(string $styleName): string |
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{ |
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$stylesPath = self::vendorPath() . "/citation-style-language/styles"; |
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return self::readFileContentsOrThrowException("$stylesPath/$styleName.csl"); |
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} |
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/** |
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* Loads xml formatted locales of given language key |
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* |
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* @param string $langKey e.g. "en-US", or "de-CH" |
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* @return string |
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* @throws CiteProcException |
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*/ |
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public static function loadLocales(string $langKey): string |
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{ |
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$localesPath = self::vendorPath()."/citation-style-language/locales"; |
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$localeFile = "$localesPath/locales-${langKey}.xml"; |
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if (file_exists($localeFile)) { |
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return self::readFileContentsOrThrowException($localeFile); |
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} else { |
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$metadata = self::loadLocalesMetadata(); |
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if (!empty($metadata->{'primary-dialects'}->{$langKey})) { |
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return self::readFileContentsOrThrowException( |
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sprintf("%s/locales-%s.xml", $localesPath, $metadata->{'primary-dialects'}->{$langKey}) |
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); |
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} |
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} |
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throw new CiteProcException("No Locale file found for $langKey"); |
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} |
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/** |
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* @throws CiteProcException |
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*/ |
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private static function readFileContentsOrThrowException($path): string |
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{ |
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$fileContent = file_get_contents($path); |
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if (false === $fileContent) { |
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throw new CiteProcException("Couldn't read $path"); |
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} |
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return $fileContent; |
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} |
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/** |
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* @return mixed |
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* @throws CiteProcException |
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*/ |
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public static function loadLocalesMetadata() |
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{ |
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$localesMetadataPath = self::vendorPath() . "/citation-style-language/locales/locales.json"; |
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return json_decode(self::readFileContentsOrThrowException($localesMetadataPath)); |
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} |
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/** |
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* @return bool|string |
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* @throws CiteProcException |
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*/ |
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private static function vendorPath() |
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{ |
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include_once realpath(__DIR__ . '/../') . '/vendorPath.php'; |
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if (!($vendorPath = vendorPath())) { |
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throw new CiteProcException('vendor path not found. Use composer to initialize your project'); |
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} |
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return $vendorPath; |
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} |
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} |
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