File API boilerplate.

webkit/glue/plugins/pepper_directory_reader.cc

+// Copyright (c) 2010 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 "webkit/glue/plugins/pepper_directory_reader.h"
+
+#include "base/logging.h"
+#include "third_party/ppapi/c/pp_completion_callback.h"
+#include "third_party/ppapi/c/pp_errors.h"
+#include "webkit/glue/plugins/pepper_file_ref.h"
+#include "webkit/glue/plugins/pepper_resource_tracker.h"
+
+namespace pepper {
+
+namespace {
+
+PP_Resource Create(PP_Resource directory_ref_id) {
+  scoped_refptr<FileRef> directory_ref(
+      ResourceTracker::Get()->GetAsFileRef(directory_ref_id));
+  if (!directory_ref.get())
+    return 0;
+
+  DirectoryReader* reader = new DirectoryReader(directory_ref);
+  reader->AddRef();  // AddRef for the caller;
+  return reader->GetResource();
+}
+
+bool IsDirectoryReader(PP_Resource resource) {
+  return !!ResourceTracker::Get()->GetAsDirectoryReader(resource).get();
+}
+
+int32_t GetNextEntry(PP_Resource reader_id,
+                     PP_DirectoryEntry* entry,
+                     PP_CompletionCallback callback) {
+  scoped_refptr<DirectoryReader> reader(
+      ResourceTracker::Get()->GetAsDirectoryReader(reader_id));
+  if (!reader.get())
+    return PP_Error_BadResource;
+
+  return reader->GetNextEntry(entry, callback);
+}
+
+const PPB_DirectoryReader ppb_directoryreader = {
+  &Create,
+  &IsDirectoryReader,
+  &GetNextEntry
+};
+
+}  // namespace
+
+DirectoryReader::DirectoryReader(FileRef* directory_ref)
+    : Resource(directory_ref->module()),
+      directory_ref_(directory_ref) {
+}
+
+DirectoryReader::~DirectoryReader() {
+}
+
+const PPB_DirectoryReader* DirectoryReader::GetInterface() {
+  return &ppb_directoryreader;
+}
+
+int32_t DirectoryReader::GetNextEntry(PP_DirectoryEntry* entry,
+                                      PP_CompletionCallback callback) {
+  NOTIMPLEMENTED();  // TODO(darin): Implement me!
+  return PP_Error_Failed;
+}
+
+}  // namespace pepper