Adds resource_provider::ResourceProvider

components/resource_provider/resource_provider_impl.cc

+// Copyright 2015 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.
+
+#include "components/resource_provider/resource_provider_impl.h"
+
+#include "base/bind.h"
+#include "base/files/file_util.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "components/resource_provider/file_utils.h"
+#include "mojo/platform_handle/platform_handle_functions.h"
+
+using mojo::ScopedHandle;
+
+namespace resource_provider {
+namespace {
+
+ScopedHandle GetHandleForPath(const base::FilePath& path) {
+  if (path.empty())
+    return ScopedHandle();
+
+  ScopedHandle to_pass;
+  base::File file(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
+  if (!file.IsValid())
+    return ScopedHandle();
+
+  MojoHandle mojo_handle;
+  if (MojoCreatePlatformHandleWrapper(file.TakePlatformFile(), &mojo_handle) !=
+      MOJO_RESULT_OK)
+    return ScopedHandle();
+
+  return ScopedHandle(mojo::Handle(mojo_handle)).Pass();
+}
+
+}  // namespace
+
+ResourceProviderImpl::ResourceProviderImpl(
+    const base::FilePath& application_path)
+    : application_path_(application_path) {
+  CHECK(!application_path_.empty());
+}
+
+ResourceProviderImpl::~ResourceProviderImpl() {
+}
+
+void ResourceProviderImpl::GetResources(mojo::Array<mojo::String> paths,
+                                        const GetResourcesCallback& callback) {
+  mojo::Array<mojo::ScopedHandle> handles;
+  if (!paths.is_null()) {
+    handles.resize(paths.size());
+    for (size_t i = 0; i < paths.size(); ++i) {
+      handles[i] = GetHandleForPath(
+          GetPathForResourceNamed(application_path_, paths[i]));
+    }
+  }
+  callback.Run(handles.Pass());
+}
+
+}  // namespace resource_provider