Feature 1535: Add language manager.

git-svn-id: http://piwigo.org/svn/trunk@5357 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 228 insertions, 0 deletions

diff --git a/admin/include/languages.class.php b/admin/include/languages.class.php
new file mode 100644
index 000000000..dd65c8abd
--- /dev/null
+++ b/admin/include/languages.class.php
@@ -0,0 +1,228 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based picture gallery                                  |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2010 Piwigo Team                  http://piwigo.org |
+// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
+// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+class languages
+{
+  var $fs_languages = array();
+  var $db_languages = array();
+  var $server_languages = array();
+
+  /**
+   * Initialize $fs_languages and $db_languages
+  */
+  function languages($target_charset = null)
+  {
+    $this->fs_languages = $this->get_fs_languages($target_charset);
+  }
+
+  /**
+   * Perform requested actions
+   * @param string - action
+   * @param string - language id
+   * @param array - errors
+   */
+  function perform_action($action, $language_id)
+  {
+    global $conf;
+
+    if (isset($this->db_languages[$language_id]))
+    {
+      $crt_db_language = $this->db_languages[$language_id];
+    }
+
+    $errors = array();
+
+    switch ($action)
+    {
+      case 'activate':
+        if (isset($crt_db_language))
+        {
+          array_push($errors, 'CANNOT ACTIVATE - LANGUAGE IS ALREADY ACTIVATED');
+          break;
+        }
+
+        $query = "
+INSERT INTO ".LANGUAGES_TABLE."
+  SET id = '".$language_id."',
+      name = '".$this->fs_languages[$language_id]."'
+;";
+        pwg_query($query);
+        break;
+
+      case 'deactivate':
+        if (!isset($crt_db_language))
+        {
+          array_push($errors, 'CANNOT DEACTIVATE - LANGUAGE IS ALREADY DEACTIVATED');
+          break;
+        }
+
+        if ($language_id == get_default_language())
+        {
+          array_push($errors, 'CANNOT DEACTIVATE - LANGUAGE IS DEFAULT LANGUAGE');
+          break;
+        }
+        
+        $query = "
+DELETE
+  FROM ".LANGUAGES_TABLE."
+  WHERE id= '".$language_id."'
+;";
+        pwg_query($query);
+        break;
+
+      case 'delete':
+        if (!empty($crt_db_language))
+        {
+          array_push($errors, 'CANNOT DELETE - LANGUAGE IS ACTIVATED');
+          break;
+        }
+        if (!isset($this->fs_languages[$language_id]))
+        {
+          array_push($errors, 'CANNOT DELETE - LANGUAGE DOES NOT EXIST');
+          break;
+        }
+
+        // Set default language to user who are using this language
+        $query = '
+UPDATE '.USER_INFOS_TABLE.'
+  SET language = "'.get_default_language().'"
+  WHERE language = "'.$language_id.'"
+;';
+        pwg_query($query);
+
+        if (!$this->deltree(PHPWG_ROOT_PATH.'language/'.$language_id))
+        {
+          $this->send_to_trash(PHPWG_ROOT_PATH.'language/'.$language_id);
+        }
+        break;
+
+      case 'set_default':
+        $query = '
+UPDATE '.USER_INFOS_TABLE.'
+  SET language = "'.$language_id.'"
+  WHERE user_id = '.$conf['default_user_id'].'
+;';
+        pwg_query($query);
+        break;
+    }
+    return $errors;
+  }
+
+  /**
+  *  Get languages defined in the language directory
+  */  
+  function get_fs_languages($target_charset = null)
+  {
+    if ( empty($target_charset) )
+    {
+      $target_charset = get_pwg_charset();
+    }
+    $target_charset = strtolower($target_charset);
+
+    $dir = opendir(PHPWG_ROOT_PATH.'language');
+
+    while ($file = readdir($dir))
+    {
+      $path = PHPWG_ROOT_PATH.'language/'.$file;
+      if (!is_link($path) and is_dir($path) and file_exists($path.'/iso.txt'))
+      {
+        list($language_name) = @file($path.'/iso.txt');
+
+        $languages[$file] = convert_charset($language_name, $target_charset);
+      }
+    }
+    closedir($dir);
+    @asort($languages);
+
+    return $languages;
+  }
+
+  function get_db_languages()
+  {
+    $query = '
+  SELECT id, name
+    FROM '.LANGUAGES_TABLE.'
+    ORDER BY name ASC
+  ;';
+    $result = pwg_query($query);
+
+    while ($row = pwg_db_fetch_assoc($result))
+    {
+      $this->db_languages[ $row['id'] ] = $row['name'];
+    }
+  }
+
+  /**
+   * delete $path directory
+   * @param string - path
+   */
+  function deltree($path)
+  {
+    if (is_dir($path))
+    {
+      $fh = opendir($path);
+      while ($file = readdir($fh))
+      {
+        if ($file != '.' and $file != '..')
+        {
+          $pathfile = $path . '/' . $file;
+          if (is_dir($pathfile))
+          {
+            $this->deltree($pathfile);
+          }
+          else
+          {
+            @unlink($pathfile);
+          }
+        }
+      }
+      closedir($fh);
+      return @rmdir($path);
+    }
+  }
+
+  /**
+   * send $path to trash directory
+   * @param string - path
+   */
+  function send_to_trash($path)
+  {
+    $trash_path = PHPWG_ROOT_PATH . 'language/trash';
+    if (!is_dir($trash_path))
+    {
+      @mkdir($trash_path);
+      $file = @fopen($trash_path . '/.htaccess', 'w');
+      @fwrite($file, 'deny from all');
+      @fclose($file);
+    }
+    while ($r = $trash_path . '/' . md5(uniqid(rand(), true)))
+    {
+      if (!is_dir($r))
+      {
+        @rename($path, $r);
+        break;
+      }
+    }
+  }
+}
+?>
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