CRX FileSystem Pepper private API

ppapi/host/file_system_registry.cc

+// Copyright (c) 2013 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 "ppapi/host/file_system_registry.h"
+
+#include "googleurl/src/gurl.h"
+
+namespace ppapi {
+namespace host {
+
+namespace {
+
+class NullFileSystemPeeker : public FileSystemRegistry::FileSystemPeeker {
+ public:
+  virtual PP_FileSystemType GetType() const OVERRIDE {
+    return PP_FILESYSTEMTYPE_INVALID;
+  }
+  virtual bool IsOpened() const OVERRIDE { return false; }
+  virtual const GURL& GetRootUrl() const OVERRIDE { return null_gurl_; }
+
+ private:
+  const GURL null_gurl_;
+};
+
+NullFileSystemPeeker kNullObject;
+
+}  // namespace
+
+FileSystemRegistry::FileSystemRegistry() {
+}
+
+FileSystemRegistry::~FileSystemRegistry() {
+}
+
+FileSystemRegistry* FileSystemRegistry::GetInstance() {
+  return Singleton<FileSystemRegistry>::get();
+}
+
+void FileSystemRegistry::Register(
+    PP_Instance instance,
+    PP_Resource resource,
+    const FileSystemRegistry::FileSystemPeeker* peeker) {
+  mapping_[std::make_pair(instance, resource)] = peeker;
+}
+
+void FileSystemRegistry::Unregister(PP_Instance instance,
+                                          PP_Resource resource) {
+  mapping_.erase(std::make_pair(instance, resource));
+}
+
+const FileSystemRegistry::FileSystemPeeker&
+FileSystemRegistry::LookUp(
+    PP_Instance instance,
+    PP_Resource resource) const {
+  ResourceMap::const_iterator iter =
+      mapping_.find(std::make_pair(instance, resource));
+  return (iter != mapping_.end()) ? *(iter->second) : kNullObject;
+}
+
+}  // namespace host
+}  // namespace ppapi