Extensions Docs Server: Internationalized samples

chrome/common/extensions/docs/server2/local_file_system.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 
 from file_system import FileSystem
 from future import Future
 
 class LocalFileSystem(FileSystem):
   """FileSystem implementation which fetches resources from the local
   filesystem.
   """
   def __init__(self, base_path):
     self._base_path = self._ConvertToFilepath(base_path)
 
   def _ConvertToFilepath(self, path):
     return path.replace('/', os.sep)
 
   def _ReadFile(self, filename):
     with open(os.path.join(self._base_path, filename), 'r') as f:
-      return f.read()
+      data = f.read()
+      if os.path.splitext(filename)[-1] in ['.js', '.html', '.json']:
+        try:
+          return unicode(data, 'utf-8')
+        except:
+          return unicode(data, 'latin-1')
+      return data
 
   def _ListDir(self, dir_name):
     all_files = []
     full_path = os.path.join(self._base_path, dir_name)
     for path in os.listdir(full_path):
       if path.startswith('.'):
         continue
       if os.path.isdir(os.path.join(full_path, path)):
         all_files.append(path + '/')
       else:
         all_files.append(path)
     return all_files
 
   def Read(self, paths):
     result = {}
     for path in paths:
       if path.endswith('/'):
         result[path] = self._ListDir(self._ConvertToFilepath(path))
       else:
         result[path] = self._ReadFile(self._ConvertToFilepath(path))
     return Future(value=result)
 
   def Stat(self, path):
     return self.StatInfo(os.stat(os.path.join(self._base_path, path)).st_mtime)