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<?php |
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declare(strict_types=1); |
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/** |
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* BEdita, API-first content management framework |
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* Copyright 2019 ChannelWeb Srl, Chialab Srl |
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* |
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* This file is part of BEdita: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* See LICENSE.LGPL or <http://gnu.org/licenses/lgpl-3.0.html> for more details. |
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*/ |
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namespace BEdita\I18n\Routing\Route; |
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use BEdita\I18n\Core\I18nTrait; |
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use Cake\Routing\Route\Route; |
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/** |
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* I18n Route class. |
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* |
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* It helps to build and match I18n routing rules. |
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*/ |
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class I18nRoute extends Route |
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{ |
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use I18nTrait; |
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/** |
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* Language string used in route template. |
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* |
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* @var string |
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*/ |
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public const LANG_STRING = 'lang'; |
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/** |
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* The placeholder to use in route template. |
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* |
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* @var string|null |
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*/ |
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protected ?string $placeholder = null; |
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/** |
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* @inheritDoc |
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*/ |
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public function __construct($template, $defaults = [], array $options = []) |
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{ |
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parent::__construct($this->buildTemplate($template), $defaults, $options); |
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if (empty($options['lang'])) { |
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$this->setPatterns(['lang' => implode('|', array_keys($this->getLanguages()))]); |
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} |
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} |
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/** |
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* Build the right route template adding {lang} or :lang if needed. |
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* |
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* If {lang} or :lang is not found add it at the beginning, for example /simple/path becomes /{lang}/simple/path |
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* |
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* @param string $template The initial template. |
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* @return string |
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*/ |
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protected function buildTemplate(string $template): string |
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{ |
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$this->setPlaceholder($template); |
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if ($template === '/') { |
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return '/' . $this->placeholder; |
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} |
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$path = sprintf('/\/%s(\/.*|$)/', $this->getSearchPattern()); |
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if (preg_match($path, $template)) { |
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return $template; |
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} |
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return sprintf('/%s%s', $this->placeholder, $template); |
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} |
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/** |
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* Set the right placeholder style. |
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* If it's present some placeholder in old colon style it uses `:lang` |
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* else it uses the braces style `{lang}`. |
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* |
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* @param string $template The template to analyze |
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* @return void |
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*/ |
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protected function setPlaceholder(string $template): void |
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{ |
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$placeholder = '{%s}'; |
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if (preg_match('/:([a-z0-9-_]+(?<![-_]))/i', $template)) { |
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$placeholder = ':%s'; |
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} |
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$this->placeholder = sprintf($placeholder, static::LANG_STRING); |
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} |
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/** |
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* Get search pattern used to know if lang pattern is already present in template. |
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* |
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* @return string |
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*/ |
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protected function getSearchPattern(): string |
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{ |
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if (strpos($this->placeholder, ':' . static::LANG_STRING) === 0) { |
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return $this->placeholder; |
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} |
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return sprintf('\{%s\}', static::LANG_STRING); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function match(array $url, array $context = []): ?string |
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{ |
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if (!array_key_exists('lang', $url)) { |
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$url['lang'] = $this->getLang(); |
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} |
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return parent::match($url, $context) ?: null; |
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} |
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} |
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bedita /
i18n
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