Extension docs server: APIDataSource

chrome/common/extensions/docs/server2/api_data_source.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 json
+import os
+
+import third_party.json_schema_compiler.json_comment_eater as json_comment_eater
+import third_party.json_schema_compiler.model as model
+
+class APIDataSource(object):
+  """This class fetches and loads JSON APIs with the fetcher passed in with
+  |cache_builder|, so the APIs can be plugged into templates.
+  """
+  def __init__(self, cache_builder, base_paths):
+    self._cache = cache_builder.build(self._LoadAPI)
+    self._base_paths = base_paths
+
+  def _LoadAPI(self, api):
+    return json.loads(json_comment_eater.Nom(api))[0]
+
+  def __getitem__(self, key):
+    return self.get(key)
+
+  def get(self, key):
+    path, ext = os.path.splitext(key)
+    unix_name = model.UnixName(path)
+    json_path = unix_name + '.json'
+    for base_path in self._base_paths:
+      try:
+        return self._cache.get(base_path + '/' + json_path)
+      except:
+        pass
+    return None