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[jirafeau.git] / lib / lang.php

diff --git a/lib/lang.php b/lib/lang.php
index 45b1a2e481e1095743fdd471531495c4363a30a7..abba1680b2ed49bbb88428d0caba4582385723dd 100644 (file)
--- a/lib/lang.php
+++ b/lib/lang.php
@@ -1,7 +1,9 @@
 <?php
 /*
  *  Jirafeau, your web file repository
- *  Copyright (C) 2015  Jerome Jutteau <j.jutteau@gmail.com>
+ *  Copyright (C) 2008  Julien "axolotl" BERNARD <axolotl@magieeternelle.org>
+ *  Copyright (C) 2015  Jerome Jutteau <jerome@jutteau.fr>
+ *  Copyright (C) 2024  Jirafeau project <https://gitlab.com/jirafeau> (see AUTHORS.md)
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU Affero General Public License as
@@ -19,29 +21,54 @@
 
 function t($string_id)
 {
-    $r = t_in($string_id, t_select_lang());
-    if ($r === false || $r === "") {
-        $r = t_in($string_id, "en");
-        if ($r === false) {
-            return "FIX ME: " . $string_id;
+    $lang_config = $GLOBALS['cfg']['lang'];
+    if ($lang_config != "auto") {
+        $r = t_in($string_id, $lang_config);
+        if ($r === false || $r === "") {
+            return "FIX ME";
         }
+        return $r;
     }
-    return $r;
+
+    $visitor_langs = t_visitor_langs();
+    foreach ($visitor_langs as $lang) {
+        $r = t_in($string_id, $lang);
+        if ($r === false || $r === "") {
+            continue;
+        } else {
+            return $r;
+        }
+    }
+    return "FIX ME";
+}
+
+function t_visitor_langs()
+{
+    $visitor_langs = t_parse_accept_language();
+    array_push($visitor_langs, "en");
+    return $visitor_langs;
 }
 
-function t_select_lang() {
-    $cfg = $GLOBALS['cfg'];
-    if (strcmp($cfg['lang'], 'auto') != 0) {
-        return $cfg['lang'];
+function t_parse_accept_language()
+{
+    if (!isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+        return [];
     }
-    else if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
-        return substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
-    } else {
-        return "en";
+    // Example: fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5
+    $langs = [];
+    $cols = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
+    foreach ($cols as $i => $semicols) {
+        $lang = explode(';', $semicols);
+        if (count($lang) === 0) {
+            continue;
+        }
+        array_push($langs, $lang[0]);
     }
+    return $langs;
 }
 
-function t_in($string_id, $lang) {
+function t_in($string_id, $lang)
+{
     $trans = t_get_json($lang);
     if ($trans === false) {
         return false;
@@ -52,8 +79,13 @@ function t_in($string_id, $lang) {
     return $trans[$string_id];
 }
 
-function t_get_raw_json($lang) {
-    $p = JIRAFEAU_ROOT . "lib/locales/$lang.json";
+function t_get_raw_json($lang)
+{
+    $filename = str_replace("-", "_", $lang);
+    if (preg_match('/[^A-Za-z_\w]/', $filename)) {
+        return false;
+    }
+    $p = JIRAFEAU_ROOT . "lib/locales/$filename.json";
     if (!file_exists($p)) {
         return false;
     }
@@ -64,7 +96,8 @@ function t_get_raw_json($lang) {
     return $json;
 }
 
-function t_get_json($lang) {
+function t_get_json($lang)
+{
     $raw_j = t_get_raw_json($lang);
     $array = json_decode($raw_j, true);
     if ($array === null) {
@@ -73,10 +106,21 @@ function t_get_json($lang) {
     return $array;
 }
 
-function json_lang_generator($lang) {
-    $r = "";
+function json_lang_generator($lang)
+{
+    $r = false;
     if ($lang === null) {
-        $r = t_get_raw_json(t_select_lang());
+        $lang_config = $GLOBALS['cfg']['lang'];
+        if ($lang_config != "auto") {
+            $r = t_get_raw_json($lang_config);
+        } else {
+            foreach (t_visitor_langs() as $lang) {
+                $r = t_get_raw_json($lang);
+                if (!($r === false)) {
+                    break;
+                }
+            }
+        }
     } else {
         $r = t_get_raw_json($lang);
     }