PolylangHelperFunctions.php
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PolylangHelperFunctions.php
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	<?php

	/**
	* Polylang community package for WP-CLI
	*
	* Helper global functions
	*
	* This is a temporary file, pending integration to Polylang API (api.php).
	* As this API uses global functions starting with pll_, we follow the convention.
	*
	* @package WP-CLI
	* @subpackage Polylang
	* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
	* @license http://www.opensource.org/licenses/bsd-license.php BSD
	* @filesource
	*/

	/**
	* Gets an array with the cached infomrmation about installed languages.
	*
	* @return array the installed languages, each item a PLL_Language object
	*/
	function pll_get_languages_list () {
	global $polylang;

	return $polylang->model->get_languages_list();
	}

	/**
	* Gets default language information
	*
	* @param string $language_code ISO 639 or locale code
	* @return array\|null the default information for the the specified language, or null if it doesn't exist
	*/
	function pll_get_default_language_information($language_code) {
	global $polylang;
	require(PLL_ADMIN_INC.'/languages.php');
	foreach ($languages as $language) {
	if ($language[0] == $language_code \|\| $language[1] == $language_code) {
	$rtl = (count($language) > 3) && ($language[3] == 'rtl');
	return array(
	'code' => $language[0],
	'locale' => $language[1],
	'name' => $language[2],
	'rtl' => $rtl
	);
	}
	}
	return null;
	}

	/**
	* Determines if the specified language code is a valid one.
	*
	* @param string $language_code ISO 639 or locale code
	* @return bool true if the language code is valid; otherwise, false.
	*/
	function pll_is_valid_language_code($language_code) {
	return pll_get_default_language_information($language_code) !== null;
	}

	/**
	* Adds a language with the default locale, name and direction.
	*
	* @param string $language_code ISO 639 or locale code
	* @param int $language_order language order [optional]
	* @param int &$error_code the error code, or 0 if the operation is successful
	* @return bool true if the language has been added; false if an error has occured
	*/
	function pll_add_language($language_code, $language_order = 0, &$error_code = 0) {
	global $polylang;

	$adminModel = new PLL_Admin_Model($polylang->options);

	$info = pll_get_default_language_information($language_code);

	$args = array(
	name => $info['name'],
	slug => $info['code'],
	locale => $info['locale'],
	rtl => $info['rtl'] ? 1 : 0,
	term_group => $language_order
	);
	$error_code = $adminModel->add_language($args);
	return $error_code !== 0;
	}

	/**
	* Determines whether a language is currently installed.
	*
	* @param string $language_code The language slug
	* @return bool true if the language is installed; otherwise, false.
	*/
	function pll_is_language_installed($language_code) {
	global $polylang;

	$languages = $polylang->model->get_languages_list();
	foreach ($languages as $language) {
	if ($language->slug == $language_code) {
	return true;
	}
	}

	return false;
	}

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