<?php
require_once( dirname( __FILE__ ) . '/not-gettexted.php' );
require_once( dirname( __FILE__ ) . '/pot-ext-meta.php' );
require_once( dirname( __FILE__ ) . '/extract.php' );

if ( ! defined( 'STDERR' ) ) {
	define( 'STDERR', fopen( 'php://stderr', 'w' ) );
}

class MakePOT {
	public $max_header_lines = 30;

	public $projects = array(
		'generic',
		'wp-frontend',
		'wp-admin',
		'wp-network-admin',
		'wp-core',
		'wp-ms',
		'wp-tz',
		'wp-plugin',
		'wp-theme',
		'bb',
		'mu',
		'bp',
		'rosetta',
		'wporg-bb-forums',
	);

	public $rules = array(
		'_'                    => array( 'string' ),
		'__'                   => array( 'string' ),
		'_e'                   => array( 'string' ),
		'_c'                   => array( 'string' ),
		'_n'                   => array( 'singular', 'plural' ),
		'_n_noop'              => array( 'singular', 'plural' ),
		'_nc'                  => array( 'singular', 'plural' ),
		'__ngettext'           => array( 'singular', 'plural' ),
		'__ngettext_noop'      => array( 'singular', 'plural' ),
		'_x'                   => array( 'string', 'context' ),
		'_ex'                  => array( 'string', 'context' ),
		'_nx'                  => array( 'singular', 'plural', null, 'context' ),
		'_nx_noop'             => array( 'singular', 'plural', 'context' ),
		'_n_js'                => array( 'singular', 'plural' ),
		'_nx_js'               => array( 'singular', 'plural', 'context' ),
		'esc_attr__'           => array( 'string' ),
		'esc_html__'           => array( 'string' ),
		'esc_attr_e'           => array( 'string' ),
		'esc_html_e'           => array( 'string' ),
		'esc_attr_x'           => array( 'string', 'context' ),
		'esc_html_x'           => array( 'string', 'context' ),
		'comments_number_link' => array( 'string', 'singular', 'plural' ),
	);

	public $ms_files = array(
		'ms-.*',
		'.*/ms-.*',
		'.*/my-.*',
		'wp-activate\.php',
		'wp-signup\.php',
		'wp-admin/network\.php',
		'wp-admin/includes/ms\.php',
		'wp-admin/network/.*\.php',
		'wp-admin/includes/class-wp-ms.*',
	);

	public $temp_files = array();

	public $meta = array(
		'default' => array(
			'from-code'          => 'utf-8',
			'msgid-bugs-address' => 'http://make.wordpress.org/polyglots',
			'language'           => 'php',
			'add-comments'       => 'translators',
			'comments'           => "Copyright (C) {year} {package-name}\nThis file is distributed under the same license as the {package-name} package.",
		),
		'generic' => array(),
		'wp-frontend' => array(
			'description'        => 'Translation of frontend strings in WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'wp-admin' => array(
			'description'        => 'Translation of site admin strings in WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'wp-network-admin' => array(
			'description'        => 'Translation of network admin strings in WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'wp-core' => array(
			'description'        => 'Translation of WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'wp-ms' => array(
			'description'        => 'Translation of multisite strings in WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'wp-tz' => array(
			'description'        => 'Translation of timezone strings in WordPress {version}',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress',
			'package-version'    => '{version}',
		),
		'bb' => array(
			'description'        => 'Translation of bbPress',
			'copyright-holder'   => 'bbPress',
			'package-name'       => 'bbPress',
		),
		'wp-plugin' => array(
			'description'        => 'Translation of the WordPress plugin {name} {version} by {author}',
			'msgid-bugs-address' => 'http://wordpress.org/support/plugin/{slug}',
			'copyright-holder'   => '{author}',
			'package-name'       => '{name}',
			'package-version'    => '{version}',
		),
		'wp-theme' => array(
			'description'        => 'Translation of the WordPress theme {name} {version} by {author}',
			'msgid-bugs-address' => 'http://wordpress.org/support/theme/{slug}',
			'copyright-holder'   => '{author}',
			'package-name'       => '{name}',
			'package-version'    => '{version}',
			'comments'           => 'Copyright (C) {year} {author}\nThis file is distributed under the same license as the {package-name} package.',
		),
		'bp' => array(
			'description'        => 'Translation of BuddyPress',
			'copyright-holder'   => 'BuddyPress',
			'package-name'       => 'BuddyPress',
		),
		'glotpress' => array(
			'description'        => 'Translation of GlotPress',
			'copyright-holder'   => 'GlotPress',
			'package-name'       => 'GlotPress',
		),
		'wporg-bb-forums'        => array(
			'description'        => 'WordPress.org International Forums',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'WordPress.org International Forums',
		),
		'rosetta' => array(
			'description'        => 'Rosetta (.wordpress.org locale sites)',
			'copyright-holder'   => 'WordPress',
			'package-name'       => 'Rosetta',
		),
	);

	public function __construct( $deprecated = true ) {
		$this->extractor = new StringExtractor( $this->rules );
	}

	public function __destruct() {
		foreach ( $this->temp_files as $temp_file ) {
			unlink( $temp_file );
		}
	}

	public function tempnam( $file ) {
		$tempnam = tempnam( sys_get_temp_dir(), $file );
		$this->temp_files[] = $tempnam;
		return $tempnam;
	}

	public function realpath_missing( $path ) {
		return realpath( dirname( $path ) ) . DIRECTORY_SEPARATOR . basename( $path );
	}

	public function xgettext( $project, $dir, $output_file, $placeholders = array(), $excludes = array(), $includes = array() ) {
		$meta = array_merge( $this->meta['default'], $this->meta[ $project ] );
		$placeholders = array_merge( $meta, $placeholders );
		$meta['output'] = $this->realpath_missing( $output_file );
		$placeholders['year'] = gmdate( 'Y' );
		$placeholder_keys = array_map( function ($x) { return "{".$x."}"; }, array_keys( $placeholders ) );
		$placeholder_values = array_values( $placeholders );
		foreach( $meta as $key => $value ) {
			$meta[ $key ] = str_replace( $placeholder_keys, $placeholder_values, $value );
		}

		$originals = $this->extractor->extract_from_directory( $dir, $excludes, $includes );
		$pot = new PO;
		$pot->entries = $originals->entries;

		$pot->set_header( 'Project-Id-Version', $meta['package-name'].' '.$meta['package-version'] );
		$pot->set_header( 'Report-Msgid-Bugs-To', 'http://support.mailpoet.com/' );
		$pot->set_header( 'POT-Creation-Date', gmdate( 'Y-m-d H:i:s+00:00' ) );
		$pot->set_header( 'MIME-Version', '1.0' );
		$pot->set_header( 'Content-Type', 'text/plain; charset=utf-8' );
		$pot->set_header( 'Content-Transfer-Encoding', '8bit' );
		$pot->set_header( 'PO-Revision-Date', gmdate( 'Y' ) . '-MO-DA HO:MI+ZONE' );
		$pot->set_header( 'Last-Translator', 'MailPoet i18n (https://www.transifex.com/organization/wysija)' );
		$pot->set_header( 'Language-Team', 'MailPoet i18n <https://www.transifex.com/organization/wysija>' );
		$pot->set_header( 'Language', 'en_US' );
		$pot->set_header( 'Plural-Forms', 'nplurals=2; plural=(n != 1);' );
		$pot->set_header( 'X-Poedit-KeywordsList', '__;_e;_x:1,2c;_ex:1,2c;_n:1,2;_nx:1,2,4c;_n_noop:1,2;_nx_noop:1,2,3c;esc_attr__;esc_html__;esc_attr_e;esc_html_e;esc_attr_x:1,2c;esc_html_x:1,2c;' );
		$pot->set_header( 'X-Poedit-Country', 'United States' );
		$pot->set_header( 'X-Poedit-SourceCharset', 'UTF-8' );
		$pot->set_header( 'X-Poedit-Basepath', '../' );
		$pot->set_header( 'X-Poedit-SearchPath-0', '.' );
		$pot->set_header( 'X-Poedit-Bookmarks', '' );
		$pot->set_header( 'X-Textdomain-Support', 'yes' );
		$pot->set_comment_before_headers( $meta['comments'] );
		$pot->export_to_file( $output_file );
		return true;
	}

	public function wp_generic( $dir, $args ) {
		$defaults = array(
			'project'                    => 'wp-core',
			'output'                     => null,
			'default_output'             => 'wordpress.pot',
			'includes'                   => array(),
			'excludes'                   => array_merge(
				array( 'wp-admin/includes/continents-cities\.php', 'wp-content/themes/twenty.*' ),
				$this->ms_files
			),
			'extract_not_gettexted'      => false,
			'not_gettexted_files_filter' => false,
		);
		$args = array_merge( $defaults, $args );
		extract( $args );
		$placeholders = array();
		if ( $wp_version = $this->wp_version( $dir ) ) {
			$placeholders['version'] = $wp_version;
		} else {
			return false;
		}
		$output = is_null( $output )? $default_output : $output;
		$res = $this->xgettext( $project, $dir, $output, $placeholders, $excludes, $includes );
		if ( ! $res ) {
			return false;
		}

		if ( $extract_not_gettexted ) {
			$old_dir = getcwd();
			$output = realpath( $output );
			chdir( $dir );
			$php_files = NotGettexted::list_php_files( '.' );
			$php_files = array_filter( $php_files, $not_gettexted_files_filter );
			$not_gettexted = new NotGettexted;
			$res = $not_gettexted->command_extract( $output, $php_files );
			chdir( $old_dir );
			// Adding non-gettexted strings can repeat some phrases.
			$output_shell = escapeshellarg( $output );
			system( "msguniq --use-first $output_shell -o $output_shell" );
		}
		return $res;
	}

	public function wp_core( $dir, $output ) {
		if ( file_exists( "$dir/wp-admin/user/about.php" ) ) {
			return false;
		}

		return $this->wp_generic(
			$dir,
			array(
				'project'                    => 'wp-core',
				'output'                     => $output,
				'extract_not_gettexted'      => true,
				'not_gettexted_files_filter' => array( $this, 'is_not_ms_file' ),
			)
		);
	}

	public function wp_frontend( $dir, $output ) {
		if ( ! file_exists( "$dir/wp-admin/user/about.php" ) ) {
			return false;
		}

		return $this->wp_generic(
			$dir,
			array(
				'project'        => 'wp-frontend',
				'output'         => $output,
				'includes'       => array(),
				'excludes'       => array( 'wp-admin/.*', 'wp-content/themes/.*' ),
				'default_output' => 'wordpress.pot',
			)
		);
	}

	public function wp_admin( $dir, $output ) {
		if ( ! file_exists( "$dir/wp-admin/user/about.php" ) ) {
			return false;
		}

		$frontend_pot = $this->tempnam( 'frontend.pot' );
		if ( false === $frontend_pot ) {
			return false;
		}

		$frontend_result = $this->wp_frontend( $dir, $frontend_pot );
		if ( ! $frontend_result ) {
			return false;
		}

		$result = $this->wp_generic(
			$dir,
			array(
				'project'        => 'wp-admin',
				'output'         => $output,
				'includes'       => array( 'wp-admin/.*' ),
				'excludes'       => array( 'wp-admin/includes/continents-cities\.php', 'wp-admin/network/.*', 'wp-admin/network.php' ),
				'default_output' => 'wordpress-admin.pot',
			)
		);

		if ( ! $result ) {
			return false;
		}

		$potextmeta = new PotExtMeta;
        $result = $potextmeta->append( "$dir/wp-content/plugins/akismet/akismet.php", $output );
		if ( ! $result ) {
			return false;
		}

		$result = $potextmeta->append( "$dir/wp-content/plugins/hello.php", $output );
		if ( ! $result ) {
			return false;
		}

		// Adding non-gettexted strings can repeat some phrases.
		$output_shell = escapeshellarg( $output );
		system( "msguniq $output_shell -o $output_shell" );

		$common_pot = $this->tempnam( 'common.pot' );
		if ( ! $common_pot ) {
			return false;
		}
		$admin_pot = realpath( is_null( $output ) ? 'wordpress-admin.pot' : $output );
		system( "msgcat --more-than=1 --use-first $frontend_pot $admin_pot > $common_pot" );
		system( "msgcat -u --use-first $admin_pot $common_pot -o $admin_pot" );
		return true;
	}

	public function wp_network_admin( $dir, $output ) {
		if ( ! file_exists( "$dir/wp-admin/user/about.php" ) ) {
			return false;
		}

		$frontend_pot = $this->tempnam( 'frontend.pot' );
		if ( false === $frontend_pot ) {
			return false;
		}

		$frontend_result = $this->wp_frontend( $dir, $frontend_pot );
		if ( ! $frontend_result ) {
			return false;
		}

		$admin_pot = $this->tempnam( 'admin.pot' );
		if ( false === $admin_pot ) {
			return false;
		}

		$admin_result = $this->wp_admin( $dir, $admin_pot );
		if ( ! $admin_result ) {
			return false;
		}

		$result = $this->wp_generic(
			$dir,
			array(
				'project'        => 'wp-network-admin',
				'output'         => $output,
				'includes'       => array( 'wp-admin/network/.*', 'wp-admin/network.php' ),
				'excludes'       => array(),
				'default_output' => 'wordpress-admin-network.pot',
			)
		);

		if ( ! $result ) {
			return false;
		}

		$common_pot = $this->tempnam( 'common.pot' );
		if ( ! $common_pot ) {
			return false;
		}

		$net_admin_pot = realpath( is_null( $output ) ? 'wordpress-network-admin.pot' : $output );
		system( "msgcat --more-than=1 --use-first $frontend_pot $admin_pot $net_admin_pot > $common_pot" );
		system( "msgcat -u --use-first $net_admin_pot $common_pot -o $net_admin_pot" );
		return true;
	}

	public function wp_ms( $dir, $output ) {
		if ( file_exists( "$dir/wp-admin/user/about.php" ) ) {
			return false;
		}
		if ( !is_file("$dir/wp-admin/ms-users.php") ) {
			return false;
		}
		$core_pot = $this->tempnam( 'wordpress.pot' );
		if ( false === $core_pot ) {
			return false;
		}
		$core_result = $this->wp_core( $dir, $core_pot );
		if ( ! $core_result ) {
			return false;
		}
		$ms_result = $this->wp_generic(
			$dir,
			array(
				'project'                    => 'wp-ms',
				'output'                     => $output,
				'includes'                   => $this->ms_files,
				'excludes'                   => array(),
				'default_output'             => 'wordpress-ms.pot',
				'extract_not_gettexted'      => true,
				'not_gettexted_files_filter' => array( $this, 'is_ms_file' ),
			)
		);
		if ( !$ms_result ) {
			return false;
		}
		$common_pot = $this->tempnam( 'common.pot' );
		if ( ! $common_pot ) {
			return false;
		}
		$ms_pot = realpath( is_null( $output )? 'wordpress-ms.pot' : $output );
		system( "msgcat --more-than=1 --use-first $core_pot $ms_pot > $common_pot" );
		system( "msgcat -u --use-first $ms_pot $common_pot -o $ms_pot" );
		return true;
	}

	public function wp_tz( $dir, $output ) {
		$continents_path = 'wp-admin/includes/continents-cities.php';
		if ( ! file_exists( "$dir/$continents_path" ) ) {
			return false;
		}
		return $this->wp_generic(
			$dir,
			array(
				'project'        => 'wp-tz',
				'output'         => $output,
				'includes'       => array( $continents_path ),
				'excludes'       => array(),
				'default_output' => 'wordpress-continents-cities.pot',
				)
		);
	}

	public function wp_version( $dir ) {
		$version_php = $dir . '/wp-includes/version.php';
		if ( ! is_readable( $version_php ) ) {
			return false;
		}
		return preg_match( '/\$wp_version\s*=\s*\'(.*?)\';/', file_get_contents( $version_php ), $matches )? $matches[1] : false;
	}

	public function mu( $dir, $output ) {
		$placeholders = array();
		if ( preg_match( '/\$wpmu_version\s*=\s*\'(.*?)\';/', file_get_contents( $dir . '/wp-includes/version.php' ), $matches ) ) {
			$placeholders['version'] = $matches[1];
		}
		$output = is_null( $output )? 'wordpress.pot' : $output;
		return $this->xgettext( 'wp', $dir, $output, $placeholders );
	}

	public function bb( $dir, $output ) {
		$placeholders = array();
		$output = is_null( $output )? 'bbpress.pot' : $output;
		return $this->xgettext( 'bb', $dir, $output, $placeholders );

	}

	public static function get_first_lines( $filename, $lines = 30 ) {
		$extf = fopen( $filename, 'r' );
		if ( ! $extf ) {
			return false;
		}
		$first_lines = '';
		foreach( range( 1, $lines ) as $x ) {
			$line = fgets( $extf );
			if ( feof( $extf ) ) {
				break;
			}
			if ( false === $line ) {
				return false;
			}
			$first_lines .= $line;
		}
		return $first_lines;
	}

	public static function get_addon_header( $header, $source ) {
		if ( preg_match( '|' . $header . ':(.*)$|mi', $source, $matches ) ) {
			return trim( $matches[1] );
		} else {
			return false;
		}
	}

	public function generic( $dir, $output ) {
		$output = is_null( $output )? 'generic.pot' : $output;
		return $this->xgettext( 'generic', $dir, $output, array() );
	}

	public function guess_plugin_slug( $dir ) {
		if ( 'trunk' == basename( $dir ) ) {
			$slug = basename( dirname( $dir ) );
		} elseif ( in_array( basename( dirname( $dir ) ), array( 'branches', 'tags' ) ) ) {
			$slug = basename( dirname( dirname( $dir ) ) );
		} else {
			$slug = basename( $dir );
		}
		return $slug;
	}

	public function wp_plugin( $dir, $output, $slug = null ) {
		$placeholders = array();
		// Guess plugin slug.
		if ( is_null( $slug ) ) {
			$slug = $this->guess_plugin_slug( $dir );
		}

		$plugins_dir = @opendir( $dir );
		$plugin_files = array();
		if ( $plugins_dir ) {
			while ( ( $file = readdir( $plugins_dir ) ) !== false ) {
				if ( '.' === substr( $file, 0, 1 ) ) {
					continue;
				}

				if ( '.php' === substr( $file, -4 ) ) {
					$plugin_files[] = $file;
				}
			}
			closedir( $plugins_dir );
		}

		if ( empty( $plugin_files ) ) {
			return false;
		}

		$main_file = '';
		foreach ( $plugin_files as $plugin_file ) {
			if ( ! is_readable( "$dir/$plugin_file" ) ) {
				continue;
			}

			$source = $this->get_first_lines( "$dir/$plugin_file", $this->max_header_lines );

			// Stop when we find a file with a plugin name header in it.
			if ( $this->get_addon_header( 'Plugin Name', $source ) != false ) {
				$main_file = "$dir/$plugin_file";
				break;
			}
		}

		if ( empty( $main_file ) ) {
			return false;
		}

		$placeholders['version'] = $this->get_addon_header( 'Version', $source );
		$placeholders['author'] = $this->get_addon_header( 'Author', $source );
		$placeholders['name'] = $this->get_addon_header( 'Plugin Name', $source );
		$placeholders['slug'] = $slug;

		$output = is_null( $output )? "$slug.pot" : $output;
		$res = $this->xgettext( 'wp-plugin', $dir, $output, $placeholders );
		if ( ! $res ) {
			return false;
		}
		$potextmeta = new PotExtMeta;
		$res = $potextmeta->append( $main_file, $output );
		/* Adding non-gettexted strings can repeat some phrases */
		$output_shell = escapeshellarg( $output );
		system( "msguniq $output_shell -o $output_shell" );
		return $res;
	}

	public function wp_theme( $dir, $output, $slug = null ) {
		$placeholders = array();
		// Guess theme slug.
		if ( is_null( $slug ) ) {
			$slug = $this->guess_plugin_slug( $dir );
		}
		$main_file = $dir . '/style.css';
		$source = $this->get_first_lines( $main_file, $this->max_header_lines );

		$placeholders['version'] = $this->get_addon_header( 'Version', $source );
		$placeholders['author'] = $this->get_addon_header( 'Author', $source );
		$placeholders['name'] = $this->get_addon_header( 'Theme Name', $source );
		$placeholders['slug'] = $slug;

		$license = $this->get_addon_header( 'License', $source );
		if ( $license ) {
			$this->meta['wp-theme']['comments'] = "Copyright (C) {year} {author}\nThis file is distributed under the {$license}.";
		} else {
			$this->meta['wp-theme']['comments'] = "Copyright (C) {year} {author}\nThis file is distributed under the same license as the {package-name} package.";
		}

		$output = is_null( $output )? "$slug.pot" : $output;
		$res = $this->xgettext( 'wp-theme', $dir, $output, $placeholders );
		if ( ! $res ) {
			return false;
		}
		$potextmeta = new PotExtMeta;
		$res = $potextmeta->append( $main_file, $output, array( 'Theme Name', 'Theme URI', 'Description', 'Author', 'Author URI' ) );
		if ( ! $res ) {
			return false;
		}
		// If we're dealing with a pre-3.4 default theme, don't extract page templates before 3.4.
		$extract_templates = ! in_array( $slug, array( 'twentyten', 'twentyeleven', 'default', 'classic' ) );
		if ( ! $extract_templates ) {
			$wp_dir = dirname( dirname( dirname( $dir ) ) );
			$extract_templates = file_exists( "$wp_dir/wp-admin/user/about.php" ) || ! file_exists( "$wp_dir/wp-load.php" );
		}
		if ( $extract_templates ) {
			$res = $potextmeta->append( $dir, $output, array( 'Template Name' ) );
			if ( ! $res ) {
				return false;
			}
			$files = scandir( $dir );
			foreach ( $files as $file ) {
				if ( '.' == $file[0] || 'CVS' == $file ) {
					continue;
				}
				if ( is_dir( $dir . '/' . $file ) ) {
					$res = $potextmeta->append( $dir . '/' . $file, $output, array( 'Template Name' ) );
					if ( ! $res ) {
						return false;
					}
				}
			}
		}
		/* Adding non-gettexted strings can repeat some phrases */
		$output_shell = escapeshellarg( $output );
		system( "msguniq $output_shell -o $output_shell" );
		return $res;
	}

	public function bp( $dir, $output ) {
		$output = is_null( $output )? "buddypress.pot" : $output;
		return $this->xgettext( 'bp', $dir, $output, array(), array( 'bp-forums/bbpress/.*' ) );
	}

	public function glotpress( $dir, $output ) {
		$output = is_null( $output ) ? "glotpress.pot" : $output;
		return $this->xgettext( 'glotpress', $dir, $output );
	}

	public function wporg_bb_forums( $dir, $output ) {
		$output = is_null( $output ) ? 'wporg.pot' : $output;
		return $this->xgettext( 'wporg-bb-forums', $dir, $output, array(), array(
			'bb-plugins/elfakismet/.*',
			'bb-plugins/support-forum/.*',
		) );
	}

	public function rosetta( $dir, $output ) {
		$output = is_null( $output )? 'rosetta.pot' : $output;
		return $this->xgettext( 'rosetta', $dir, $output, array(), array(), array(
			'mu-plugins/rosetta.*\.php',
			'mu-plugins/rosetta/[^/]+\.php',
			'mu-plugins/rosetta/tmpl/.*\.php',
			'themes/rosetta/.*\.php',
		) );
	}

	public function is_ms_file( $file_name ) {
		$is_ms_file = false;
		$prefix = substr( $file_name, 0, 2 ) === './' ? '\./' : '';
		foreach( $this->ms_files as $ms_file ) {
			if ( preg_match( '|^' . $prefix . $ms_file . '$|', $file_name ) ) {
				$is_ms_file = true;
				break;
			}
		}
		return $is_ms_file;
	}

	public function is_not_ms_file( $file_name ) {
		return ! $this->is_ms_file( $file_name );
	}
}

// Run the CLI only if the file wasn't included.
$included_files = get_included_files();
if ( __FILE__ == $included_files[0] ) {
	$makepot = new MakePOT;
	if ( ( 3 == count( $argv ) || 4 == count( $argv ) ) && in_array( $method = str_replace( '-', '_', $argv[1] ), get_class_methods( $makepot ) ) ) {
		$res = call_user_func(
			array( $makepot, $method ),         // Method
			realpath( $argv[2] ),               // Directory
			isset( $argv[3] ) ? $argv[3] : null // Output
		);
		if ( false === $res ) {
			fwrite( STDERR, "Couldn't generate POT file!\n" );
		}
	} else {
		$usage  = "Usage: php makepot.php PROJECT DIRECTORY [OUTPUT]\n\n";
		$usage .= "Generate POT file from the files in DIRECTORY [OUTPUT]\n";
		$usage .= "Available projects: " . implode( ', ', $makepot->projects ) . "\n";
		fwrite( STDERR, $usage );
		exit( 1 );
	}
}