1 files changed, 101 insertions, 0 deletions
diff --git a/extensions/common/permissions/permissions_info.cc b/extensions/common/permissions/permissions_info.cc
new file mode 100644
index 0000000..bac3d9c1
--- /dev/null
+++ b/extensions/common/permissions/permissions_info.cc
@@ -0,0 +1,101 @@
+// Copyright 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 "extensions/common/permissions/permissions_info.h"
+
+#include "base/lazy_instance.h"
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "base/strings/string_util.h"
+#include "extensions/common/extensions_client.h"
+
+namespace extensions {
+
+static base::LazyInstance<PermissionsInfo> g_permissions_info =
+    LAZY_INSTANCE_INITIALIZER;
+
+// static
+PermissionsInfo* PermissionsInfo::GetInstance() {
+  return g_permissions_info.Pointer();
+}
+
+PermissionsInfo::~PermissionsInfo() {
+  STLDeleteContainerPairSecondPointers(id_map_.begin(), id_map_.end());
+}
+
+const APIPermissionInfo* PermissionsInfo::GetByID(
+    APIPermission::ID id) const {
+  IDMap::const_iterator i = id_map_.find(id);
+  return (i == id_map_.end()) ? NULL : i->second;
+}
+
+const APIPermissionInfo* PermissionsInfo::GetByName(
+    const std::string& name) const {
+  NameMap::const_iterator i = name_map_.find(name);
+  return (i == name_map_.end()) ? NULL : i->second;
+}
+
+APIPermissionSet PermissionsInfo::GetAll() const {
+  APIPermissionSet permissions;
+  for (IDMap::const_iterator i = id_map_.begin(); i != id_map_.end(); ++i)
+    permissions.insert(i->second->id());
+  return permissions;
+}
+
+APIPermissionSet PermissionsInfo::GetAllByName(
+    const std::set<std::string>& permission_names) const {
+  APIPermissionSet permissions;
+  for (std::set<std::string>::const_iterator i = permission_names.begin();
+       i != permission_names.end(); ++i) {
+    const APIPermissionInfo* permission_info = GetByName(*i);
+    if (permission_info)
+      permissions.insert(permission_info->id());
+  }
+  return permissions;
+}
+
+bool PermissionsInfo::HasChildPermissions(const std::string& name) const {
+  NameMap::const_iterator i = name_map_.lower_bound(name + '.');
+  if (i == name_map_.end()) return false;
+  return StartsWithASCII(i->first, name + '.', true);
+}
+
+PermissionsInfo::PermissionsInfo()
+    : hosted_app_permission_count_(0),
+      permission_count_(0) {
+  DCHECK(ExtensionsClient::Get());
+  InitializeWithProvider(ExtensionsClient::Get()->GetPermissionsProvider());
+}
+
+void PermissionsInfo::InitializeWithProvider(
+    const PermissionsProvider& provider) {
+  std::vector<APIPermissionInfo*> permissions = provider.GetAllPermissions();
+  std::vector<PermissionsProvider::AliasInfo> aliases =
+      provider.GetAllAliases();
+
+  for (size_t i = 0; i < permissions.size(); ++i)
+    RegisterPermission(permissions[i]);
+  for (size_t i = 0; i < aliases.size(); ++i)
+    RegisterAlias(aliases[i].name, aliases[i].alias);
+}
+
+void PermissionsInfo::RegisterAlias(
+    const char* name,
+    const char* alias) {
+  DCHECK(ContainsKey(name_map_, name));
+  DCHECK(!ContainsKey(name_map_, alias));
+  name_map_[alias] = name_map_[name];
+}
+
+void PermissionsInfo::RegisterPermission(APIPermissionInfo* permission) {
+  DCHECK(!ContainsKey(id_map_, permission->id()));
+  DCHECK(!ContainsKey(name_map_, permission->name()));
+
+  id_map_[permission->id()] = permission;
+  name_map_[permission->name()] = permission;
+
+  permission_count_++;
+}
+
+}  // namespace extensions