Add support for pretty-printing PHP files in wp i18n make-php command

README.md

@@ -245,6 +245,9 @@ wp i18n make-php <source> [<destination>]
 	[<destination>]
 		Path to the destination directory for the resulting PHP files. Defaults to the source directory.
 
+	[--pretty-print]
+		Pretty-print resulting PHP files.
+
 **EXAMPLES**
 
     # Create PHP files for all PO files in the current directory.

features/makephp.feature

@@ -259,3 +259,63 @@ Feature: Generate PHP files from PO files
       """
       new message
       """
+
+  Scenario: Should create pretty-printed PHP files
+    Given an empty foo-plugin directory
+    And a foo-plugin/foo-plugin-de_DE.po file:
+      """
+      # Copyright (C) 2018 Foo Plugin
+      # This file is distributed under the same license as the Foo Plugin package.
+      msgid ""
+      msgstr ""
+      "Project-Id-Version: Foo Plugin\n"
+      "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/foo-plugin\n"
+      "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+      "Language-Team: LANGUAGE <LL@li.org>\n"
+      "Language: de_DE\n"
+      "MIME-Version: 1.0\n"
+      "Content-Type: text/plain; charset=UTF-8\n"
+      "Content-Transfer-Encoding: 8bit\n"
+      "POT-Creation-Date: 2018-05-02T22:06:24+00:00\n"
+      "PO-Revision-Date: 2018-05-02T22:06:24+00:00\n"
+      "X-Domain: foo-plugin\n"
+      "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+      #: foo-plugin.js:15
+      msgid "Foo Plugin"
+      msgstr "Foo Plugin"
+
+      #: foo-plugin.js:16
+      msgid "Hello"
+      msgstr "Hallo"
+
+      #: foo-plugin.js:17
+      msgid "You have %d new message"
+      msgid_plural "You have %d new messages"
+      msgstr[0] "Du hast %d neue Nachricht"
+      msgstr[1] "Du hast %d neue Nachrichten"
+      """
+
+    When I run `wp i18n make-php foo-plugin --pretty-print`
+    Then STDOUT should contain:
+      """
+      Success: Created 1 file.
+      """
+    And the return code should be 0
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      <?php
+      return [
+          'domain' => 'foo-plugin',
+          'plural-forms' => 'nplurals=2; plural=(n != 1);',
+          'language' => 'de_DE',
+          'project-id-version' => 'Foo Plugin',
+          'pot-creation-date' => '2018-05-02T22:06:24+00:00',
+          'po-revision-date' => '2018-05-02T22:06:24+00:00',
+          'messages' => [
+              'Foo Plugin' => 'Foo Plugin',
+              'Hello' => 'Hallo',
+              'You have %d new message' => 'Du hast %d neue Nachricht' . "\0" . 'Du hast %d neue Nachrichten',
+          ],
+      ];
+      """

src/MakePhpCommand.php

@@ -22,6 +22,9 @@ class MakePhpCommand extends WP_CLI_Command {
 	 * [<destination>]
 	 * : Path to the destination directory for the resulting PHP files. Defaults to the source directory.
 	 *
+	 * [--pretty-print]
+	 * : Pretty-print resulting PHP files.
+	 *
 	 * ## EXAMPLES
 	 *
 	 *     # Create PHP files for all PO files in the current directory.
@@ -58,6 +61,8 @@ public function __invoke( $args, $assoc_args ) {
 		}
 
 		$result_count = 0;
+		$pretty_print = Utils\get_flag_value( $assoc_args, 'pretty-print', false );
+
 		/** @var DirectoryIterator $file */
 		foreach ( $files as $file ) {
 			if ( 'po' !== $file->getExtension() ) {
@@ -73,7 +78,7 @@ public function __invoke( $args, $assoc_args ) {
 			$destination_file = "{$destination}/{$file_basename}.l10n.php";
 
 			$translations = Translations::fromPoFile( $file->getPathname() );
-			if ( ! PhpArrayGenerator::toFile( $translations, $destination_file ) ) {
+			if ( ! PhpArrayGenerator::toFile( $translations, $destination_file, [ 'prettyPrint' => $pretty_print ] ) ) {
 				WP_CLI::warning( sprintf( 'Could not create file %s', $destination_file ) );
 				continue;
 			}

src/PhpArrayGenerator.php

@@ -14,6 +14,7 @@
 class PhpArrayGenerator extends PhpArray {
 	public static $options = [
 		'includeHeaders' => false,
+		'prettyPrint'    => false,
 	];
 
 	/**
@@ -22,7 +23,15 @@ class PhpArrayGenerator extends PhpArray {
 	public static function toString( Translations $translations, array $options = [] ) {
 		$array = static::generate( $translations, $options );
 
-		return '<?php' . PHP_EOL . 'return ' . static::var_export( $array ) . ';';
+		$pretty_print = isset( $options['prettyPrint'] ) ? $options['prettyPrint'] : false;
+
+		if ( true === $pretty_print ) {
+			$exported_array = static::pretty_export( $array );
+		} else {
+			$exported_array = static::var_export( $array );
+		}
+
+		return '<?php' . PHP_EOL . 'return ' . $exported_array . ';';
 	}
 
 	/**
@@ -163,4 +172,35 @@ private static function var_export( $value ) {
 
 		return '[' . implode( ',', $entries ) . ']';
 	}
+
+	/**
+	 * Outputs or returns a parsable string representation of a variable.
+	 *
+	 * @param mixed $value The variable you want to export.
+	 * @param int   $level The current indentation level.
+	 * @param int   $indentation The number of spaces for indentation.
+	 * @return string The variable representation.
+	 */
+	private static function pretty_export( $values, $indentation = 4, $is_top_level = true ) {
+		$result = '[' . PHP_EOL;
+		$indent = str_repeat( ' ', $indentation );
+
+		foreach ( $values as $key => $value ) {
+			$result .= $indent . str_repeat( ' ', $indentation ) . "'$key' => ";
+
+			if ( is_array( $value ) ) {
+				$result .= self::pretty_export( $value, $indentation + $indentation, false );
+			} elseif ( strpos( $value, "\0" ) !== false ) {
+				$parts   = explode( "\0", $value );
+				$result .= "'" . implode( "' . \"\\0\" . '", array_map( 'addslashes', $parts ) ) . "'";
+			} else {
+				$result .= "'$value'";
+			}
+
+			$result .= ',' . PHP_EOL;
+		}
+
+		$result .= $is_top_level ? ']' : $indent . ']';
+		return $result;
+	}
 }