AbstractParser.php

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<?php
namespace Magento\Setup\Module\I18n\Parser;

use Magento\Setup\Module\I18n;

abstract class AbstractParser implements I18n\ParserInterface
{
    protected $_filesCollector = [];

    protected $_factory;

    protected $_adapters = [];

    protected $_phrases = [];

    public function __construct(I18n\FilesCollector $filesCollector, I18n\Factory $factory)
    {
        $this->_filesCollector = $filesCollector;
        $this->_factory = $factory;
    }

    public function addAdapter($type, AdapterInterface $adapter)
    {
        $this->_adapters[$type] = $adapter;
    }

    public function parse(array $parseOptions)
    {
        $this->_validateOptions($parseOptions);

        foreach ($parseOptions as $typeOptions) {
            $this->_parseByTypeOptions($typeOptions);
        }
        return $this->_phrases;
    }

    abstract protected function _parseByTypeOptions($options);

    protected function _validateOptions($parseOptions)
    {
        foreach ($parseOptions as $parserOptions) {
            if (empty($parserOptions['type'])) {
                throw new \InvalidArgumentException('Missed "type" in parser options.');
            }
            if (!isset($this->_adapters[$parserOptions['type']])) {
                throw new \InvalidArgumentException(
                    sprintf('Adapter is not set for type "%s".', $parserOptions['type'])
                );
            }
            if (!isset($parserOptions['paths']) || !is_array($parserOptions['paths'])) {
                throw new \InvalidArgumentException('"paths" in parser options must be array.');
            }
        }
    }

    protected function _getFiles($options)
    {
        $fileMask = isset($options['fileMask']) ? $options['fileMask'] : '';

        return $this->_filesCollector->getFiles($options['paths'], $fileMask);
    }

    public function getPhrases()
    {
        return $this->_phrases;
    }
}