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<?php |
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/** |
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* This file is part of php-simple-conversion. |
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* |
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* php-simple-conversion is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* 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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* php-simple-conversion is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with php-simple-conversion. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace Mcustiel\Conversion; |
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use Mcustiel\Conversion\Exception\ConverterDoesNotExistException; |
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/** |
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* Singleton class the holds all the registered converters, and allows to access them. |
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* |
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* @author mcustiel |
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*/ |
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class SimpleConverterContainer implements ConverterContainer |
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{ |
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/** |
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* @var ConverterBuilder|Converter[][] |
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*/ |
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private $converters = []; |
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/** |
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* Registers a converter. |
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* |
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* @param ConverterBuilder $converterBuilder the builder of the converter to register |
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* |
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* @throws \InvalidArgumentException if from or to are unset |
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*/ |
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public function addConverter(ConverterBuilder $converterBuilder) |
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{ |
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$this->validateBuilder($converterBuilder); |
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if (!isset($this->converters[$converterBuilder->getFrom()])) { |
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$this->converters[$converterBuilder->getFrom()] = []; |
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} |
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$this->converters[$converterBuilder->getFrom()][$converterBuilder->getTo()] = $converterBuilder; |
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} |
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/** |
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* Access the implementation of the converter for the given from and to parameters. |
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* |
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* @param string $from the type from which the converter converts |
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* @param string $to the type to which the converter converts to |
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* |
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* @throws \Mcustiel\Conversion\Exception\ConverterDoesNotExistException |
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* |
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* @return Converter |
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*/ |
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public function getConverter($from, $to) |
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{ |
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if (!isset($this->converters[$from][$to])) { |
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throw new ConverterDoesNotExistException( |
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"Converter from {$from} to {$to} does not exist" |
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); |
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} |
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$converter = $this->converters[$from][$to]; |
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if ($converter instanceof ConverterBuilder) { |
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$this->converters[$from][$to] = $converter->getConverter(); |
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} |
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return $this->converters[$from][$to]; |
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} |
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/** |
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* @param converter |
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* @param mixed $converter |
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*/ |
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private function validateBuilder($converter) |
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{ |
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if (empty($converter->getFrom())) { |
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throw new \InvalidArgumentException('From is unset'); |
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} |
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if (empty($converter->getTo())) { |
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throw new \InvalidArgumentException('To is unset'); |
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} |
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} |
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} |
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mcustiel /
php-simple-conversion
