Extend CI's language class to load english language file if no other exists

application/core/MY_Lang.php

@@ -0,0 +1,82 @@
+<?php defined('BASEPATH') || exit("No direct script access allowed");
+
+/**
+ * Extends CI's language class.
+ *
+ * @author Eike Foken <kontakt@eikefoken.de>
+ */
+class MY_Lang extends CI_Lang {
+
+	/**
+	 * Calls the parent constructor.
+	 */
+	public function __construct() {
+		parent::__construct();
+	}
+
+	/**
+	 * Loads a language file.
+	 *
+	 * @see CI_Lang::load()
+	 */
+	public function load($langfile = '', $idiom = '', $return = false, $add_suffix = true, $alt_path = '') {
+		$langfile = str_replace(EXT, '', $langfile);
+
+		if ($add_suffix == true) {
+			$langfile = str_replace('_lang.', '', $langfile) . '_lang';
+		}
+
+		$langfile .= EXT;
+
+		if (in_array($langfile, $this->is_loaded, true)) {
+			return;
+		}
+
+		$config =& get_config();
+
+		if ($idiom == '') {
+			$defaultLang = !isset($config['language']) ? 'english' : $config['language'];
+			$idiom = ($defaultLang == '') ? 'english' : $defaultLang;
+		}
+
+		// determine where the language file is and load it
+		if ($alt_path != '' && file_exists($alt_path . 'language/' . $idiom . '/' . $langfile)) {
+			include($alt_path . 'language/' . $idiom . '/' . $langfile);
+		} else {
+			$found = false;
+
+			foreach (get_instance()->load->get_package_paths(true) as $packagePath) {
+				if (file_exists($packagePath . 'language/' . $idiom . '/' . $langfile)) {
+					include($packagePath . 'language/' . $idiom . '/' . $langfile);
+					$found = true;
+					break;
+				} else if (file_exists($packagePath . 'language/english/' . $langfile)) {
+					// load the english language file if the other file does exists
+					include($packagePath . 'language/english/' . $langfile);
+					$found = true;
+					break;
+				}
+			}
+
+			if ($found !== true) {
+				show_error('Unable to load the requested language file: language/' . $idiom . '/' . $langfile);
+			}
+		}
+
+		if (!isset($lang)) {
+			log_message('error', 'Language file contains no data: language/' . $idiom . '/' . $langfile);
+			return;
+		}
+
+		if ($return == true) {
+			return $lang;
+		}
+
+		$this->is_loaded[] = $langfile;
+		$this->language = array_merge($this->language, $lang);
+		unset($lang);
+
+		log_message('debug', 'Language file loaded: language/' . $idiom . '/' . $langfile);
+		return true;
+	}
+}