Control shorting of language codes

localeMap.json

@@ -13,7 +13,7 @@
   "de": "de_DE",
   "sl": "sl_SI",
   "hr": "hr_HR",
-  "zh": "zh_TW",
+  "zh_TW": "zh_TW",
   "el": "el_GR",
   "es": "es_ES",
   "fa": "fa_IR",
@@ -22,9 +22,8 @@
   "uk": "uk_UA",
   "zh_CN": "zh_CN",
   "cs": "cs_CZ",
-  "pt": "pt_BR",
+  "pt_BR": "pt_BR",
   "es_CO": "es_CO",
   "eu": "eu_ES",
-  "sr": "sr_RS",
-  "sr_RS": "sr_RS"
+  "sr": "sr_RS"
 }

translation.php

@@ -16,9 +16,11 @@ function loadLocaleMap($filePath)
     return $localeMap;
 }
 
+$localeMap = loadLocaleMap(__DIR__ . '/localeMap.json');
+
 function getFlags($href = '/')
 {
-    $localeMap = loadLocaleMap(__DIR__ . '/localeMap.json');
+    global $localeMap;
 
     // Default English entry
     echo('<a class="dropdown-item" href="' . $href . '">
@@ -28,34 +30,23 @@ function getFlags($href = '/')
         if ($shortCode === 'en') {
             continue;
         }
-        $localeObj = locale_get_display_language($locale, $locale);
-        if (!$localeObj) {
-            $localeObj = $locale; // fallback
-        }
-
+        $localeName = locale_get_display_language($locale, $locale) ?: $locale;
         echo('<a class="dropdown-item" href="' . $href . '?lang=' . $shortCode . '">
-                <img src="lang/' . $shortCode . '/flag.jpg" alt="" />' . _($localeObj) . '</a>');
+                <img src="lang/' . $locale . '/flag.jpg" alt="" />' . htmlentities($localeName) . '</a>');
     }
 }
 
-$lang = $_GET['lang'] ?? '';
-$lang = preg_match('@^[a-z]{2}(?:_[A-Z]{2})?$@', $lang) ? $lang : 'en';
-$localeMap = loadLocaleMap(__DIR__ . '/localeMap.json');
+$lang = $_GET['lang'] ?? "en";
+$localeMapFlip = array_flip($localeMap);
 $locale = $localeMap[$lang] ?? $lang;
+$lang = $localeMapFlip[$locale] ?? "en";
+if ($lang == "en") $locale = "en";
 putenv("LC_ALL=$locale");
 setlocale(LC_ALL, $locale);
 bindtextdomain("homepage", "lang");
 textdomain("homepage");
 bind_textdomain_codeset("homepage", 'UTF-8');
 
-$flagcode = $lang;
-
-if (!file_exists('lang/'.$flagcode."/flag.jpg")) {
-    if (strpos($flagcode, '_') !== false) {
-        $flagcode = explode("_", $flagcode)[0];
-    }
-}
+$flagcode = $locale;
 $langStr    = "?lang=" . urlencode($lang);
 $langattrib = "&lang=" . urlencode($lang);
-
-?>