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wp-content/plugins/wpml-string-translation/classes/MO/File/Generator.php

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+<?php
+
+namespace WPML\ST\MO\File;
+
+
+use WPML\Collect\Support\Collection;
+use WPML\ST\TranslateWpmlString;
+use WPML\ST\TranslationFile\StringEntity;
+use function wpml_collect;
+
+class Generator {
+	/** @var MOFactory */
+	private $moFactory;
+
+	public function __construct( MOFactory $moFactory ) {
+		$this->moFactory = $moFactory;
+	}
+
+	/**
+	 * @param StringEntity[] $entries
+	 *
+	 * @return string
+	 */
+	public function getContent( array $entries ) {
+		$mo = $this->moFactory->createNewInstance();
+		wpml_collect( $entries )
+			->reduce( [ $this, 'createMOFormatEntities' ], wpml_collect( [] ) )
+			->filter( function( array $entry ) { return ! empty($entry['singular']); } )
+			->each( [ $mo, 'add_entry' ] );
+
+		$mem_file = fopen( 'php://memory', 'r+' );
+		$mo->export_to_file_handle( $mem_file );
+
+		rewind( $mem_file );
+		$mo_content = stream_get_contents( $mem_file );
+
+		fclose( $mem_file );
+
+		return $mo_content;
+	}
+
+	/**
+	 * @param Collection   $carry
+	 * @param StringEntity $entry
+	 *
+	 * @return Collection
+	 */
+	public function createMOFormatEntities( $carry, StringEntity $entry ) {
+		$carry->push( $this->mapStringEntityToMOFormatUsing( $entry, 'original' ) );
+
+		if ( TranslateWpmlString::canTranslateWithMO( $entry->get_original(), $entry->get_name() ) ) {
+			$carry->push( $this->mapStringEntityToMOFormatUsing( $entry, 'name' ) );
+		}
+
+		return $carry;
+	}
+
+	/**
+	 * @param StringEntity $entry
+	 * @param string       $singularField
+	 *
+	 * @return array
+	 */
+	private function mapStringEntityToMOFormatUsing( StringEntity $entry, $singularField ) {
+		return [
+			'singular'     => $entry->{'get_' . $singularField}(),
+			'translations' => $entry->get_translations(),
+			'context'      => $entry->get_context(),
+			'plural'       => $entry->get_original_plural(),
+		];
+	}
+}