lib/lang.php

   1 <?php
   2 /*
   3  *  Jirafeau, your web file repository
   4  *  Copyright (C) 2015  Jerome Jutteau <jerome@jutteau.fr>
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU Affero General Public License as
   8  *  published by the Free Software Foundation, either version 3 of the
   9  *  License, or (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU Affero General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Affero General Public License
  17  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18  */
  19
  20 function t($string_id)
  21 {
  22     $lang_config = $GLOBALS['cfg']['lang'];
  23     if ($lang_config != "auto") {
  24         $r = t_in($string_id, $lang_config);
  25         if ($r === false || $r === "") {
  26             return "FIX ME";
  27         }
  28         return $r;
  29     }
  30
  31     $visitor_langs = t_visitor_langs();
  32     foreach ($visitor_langs as $lang) {
  33         $r = t_in($string_id, $lang);
  34         if ($r === false || $r === "") {
  35             continue;
  36         } else {
  37             return $r;
  38         }
  39     }
  40     return "FIX ME";
  41 }
  42
  43 function t_visitor_langs()
  44 {
  45     $visitor_langs = t_parse_accept_language();
  46     array_push($visitor_langs, "en");
  47     return $visitor_langs;
  48 }
  49
  50 function t_parse_accept_language()
  51 {
  52     if (!isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
  53         return [];
  54     }
  55     // Example: fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5
  56     $langs = [];
  57     $cols = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
  58     foreach ($cols as $i => $semicols) {
  59         $lang = explode(';', $semicols);
  60         if (count($lang) === 0) {
  61             continue;
  62         }
  63         array_push($langs, $lang[0]);
  64     }
  65     return $langs;
  66 }
  67
  68 function t_in($string_id, $lang)
  69 {
  70     $trans = t_get_json($lang);
  71     if ($trans === false) {
  72         return false;
  73     }
  74     if (!array_key_exists($string_id, $trans)) {
  75         return false;
  76     }
  77     return $trans[$string_id];
  78 }
  79
  80 function t_get_raw_json($lang)
  81 {
  82     $filename = str_replace("-", "_", $lang);
  83     if (preg_match('/[^A-Za-z_\w]/', $filename)) {
  84         return false;
  85     }
  86     $p = JIRAFEAU_ROOT . "lib/locales/$filename.json";
  87     if (!file_exists($p)) {
  88         return false;
  89     }
  90     $json = file_get_contents($p);
  91     if ($json === false) {
  92         return false;
  93     }
  94     return $json;
  95 }
  96
  97 function t_get_json($lang)
  98 {
  99     $raw_j = t_get_raw_json($lang);
 100     $array = json_decode($raw_j, true);
 101     if ($array === null) {
 102         return false;
 103     }
 104     return $array;
 105 }
 106
 107 function json_lang_generator($lang)
 108 {
 109     $r = false;
 110     if ($lang === null) {
 111         $lang_config = $GLOBALS['cfg']['lang'];
 112         if ($lang_config != "auto") {
 113             $r = t_get_raw_json($lang_config);
 114         } else {
 115             foreach (t_visitor_langs() as $lang) {
 116                 $r = t_get_raw_json($lang);
 117                 if (!($r === false)) {
 118                     break;
 119                 }
 120             }
 121         }
 122     } else {
 123         $r = t_get_raw_json($lang);
 124     }
 125     return $r === false ? "{}" : $r;
 126 }