components/resource_provider/resource_provider_impl.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/resource_provider/resource_provider_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/files/file_util.h"
   9 #include "base/location.h"
  10 #include "base/logging.h"
  11 #include "components/resource_provider/file_utils.h"
  12 #include "mojo/platform_handle/platform_handle_functions.h"
  13
  14 using mojo::ScopedHandle;
  15
  16 namespace resource_provider {
  17 namespace {
  18
  19 ScopedHandle GetHandleForPath(const base::FilePath& path) {
  20   if (path.empty())
  21     return ScopedHandle();
  22
  23   ScopedHandle to_pass;
  24   base::File file(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
  25   if (!file.IsValid())
  26     return ScopedHandle();
  27
  28   MojoHandle mojo_handle;
  29   if (MojoCreatePlatformHandleWrapper(file.TakePlatformFile(), &mojo_handle) !=
  30       MOJO_RESULT_OK)
  31     return ScopedHandle();
  32
  33   return ScopedHandle(mojo::Handle(mojo_handle)).Pass();
  34 }
  35
  36 }  // namespace
  37
  38 ResourceProviderImpl::ResourceProviderImpl(
  39     const base::FilePath& application_path)
  40     : application_path_(application_path) {
  41   CHECK(!application_path_.empty());
  42 }
  43
  44 ResourceProviderImpl::~ResourceProviderImpl() {
  45 }
  46
  47 void ResourceProviderImpl::GetResources(mojo::Array<mojo::String> paths,
  48                                         const GetResourcesCallback& callback) {
  49   mojo::Array<mojo::ScopedHandle> handles;
  50   if (!paths.is_null()) {
  51     handles.resize(paths.size());
  52     for (size_t i = 0; i < paths.size(); ++i) {
  53       handles[i] = GetHandleForPath(
  54           GetPathForResourceNamed(application_path_, paths[i]));
  55     }
  56   }
  57   callback.Run(handles.Pass());
  58 }
  59
  60 }  // namespace resource_provider