GlotPress Serbian transliteration

export.php

<?php

function __construct() {
	$this->short_options .= 'o:v:';
	$this->usage .= ' [-o <format (default=po)>] [-v <variant>]';
	$this->add_filters_to_options_and_usage();
	parent::__construct();
}

function action_on_translation_set( $translation_set ) {

	$format = gp_array_get( GP::$formats, isset( $this->options['o'] )? $this->options['o'] : 'po', null );
	if ( !$format ) $this->error( __('No such format.') );;

	if ( isset( $this->options['v'] ) ) {
		$_GET['variant'] = $this->options['v'];
	}

	$entries = GP::$translation->for_export( $this->project, $translation_set, $this->get_filters_for_translation() );
	echo $format->print_exported_file( $this->project, $this->locale, $translation_set, $entries )."\n";
}

lib.php

<?php

function find_all_translations_for_type_and_domain( $type, $domain = 'default', $version = null ) {
  
  $sr_latin = clone GP_Locales::by_field( 'wp_locale', 'sr_RS' );
  $sr_latin->english_name = 'Serbian (Latin)';
  $sr_latin->native_name = 'Српски (латиница)';
  $sr_latin->slug = 'sr';
  $sr_latin->wp_locale = 'sr_RS@Latin'; // Both slug and this should probably change
  $GLOBALS['gp_locales']->locales['sr/latin'] = $sr_latin;
}

serbian-latin.php

<?php

class GP_Serbian_Latin extends GP_Plugin {
	public $id = 'serbian-latin';

	var $replace_pairs = array(
		'А' => 'A',
		'Б' => 'B',
		'В' => 'V',
		'Г' => 'G',
		'Д' => 'D',
		'Ђ' => 'Đ',
		'Е' => 'E',
		'Ж' => 'Ž',
		'З' => 'Z',
		'И' => 'I',
		'Ј' => 'J',
		'К' => 'K',
		'Л' => 'L',
		'Љ' => 'Lj',
		'М' => 'M',
		'Н' => 'N',
		'Њ' => 'Nj',
		'О' => 'O',
		'П' => 'P',
		'Р' => 'R',
		'С' => 'S',
		'Т' => 'T',
		'Ћ' => 'Ć',
		'У' => 'U',
		'Ф' => 'F',
		'Х' => 'H',
		'Ц' => 'C',
		'Ч' => 'Č',
		'Џ' => 'Dž',
		'Ш' => 'Š',
		'а' => 'a',
		'б' => 'b',
		'в' => 'v',
		'г' => 'g',
		'д' => 'd',
		'ђ' => 'đ',
		'е' => 'e',
		'ж' => 'ž',
		'з' => 'z',
		'и' => 'i',
		'ј' => 'j',
		'к' => 'k',
		'л' => 'l',
		'љ' => 'lj',
		'м' => 'm',
		'н' => 'n',
		'њ' => 'nj',
		'о' => 'o',
		'п' => 'p',
		'р' => 'r',
		'с' => 's',
		'т' => 't',
		'ћ' => 'ć',
		'у' => 'u',
		'ф' => 'f',
		'х' => 'h',
		'ц' => 'c',
		'ч' => 'č',
		'џ' => 'dž',
		'ш' => 'š',
    );

	public function __construct() {
		parent::__construct();

		$this->add_filter( 'export_translations_filename', array( 'args' => 5 ) );
		$this->add_filter( 'for_export_translations', array( 'args' => 2 ) );
	}

	public function export_translations_filename( $filename, $format, $locale, $project, $translation_set ) {
		if ( 'sr' == $translation_set->locale && 'latin' == gp_get( 'variant' ) ) {
			$filename = str_replace( 'sr', 'sr-latin', $filename );
		}

		return $filename;
	}

	public function for_export_translations( $translation_entries, $translation_set ) {
		if ( 'sr' == $translation_set->locale && 'latin' == gp_get( 'variant' ) ) {
			foreach ( $translation_entries as $translation_entry ) {
				foreach ( $translation_entry->translations as &$translation ) {
					$translation = strtr( $translation, $this->replace_pairs );
				}
			}
		}

		return $translation_entries;
	}
}

GP::$plugins->serbian_latin = new GP_Serbian_Latin;

translation.php

<?php

function for_export( $project, $translation_set, $filters =  null ) {
	$translations = GP::$translation->for_translation( $project, $translation_set, 'no-limit', $filters? $filters : array( 'status' => 'current_or_untranslated' ) );

	$translations = apply_filters( 'for_export_translations', $translations, $translation_set, $filters );

	return $translations;
}