1 files changed, 55 insertions, 0 deletions
diff --git a/dom/quota/ClientUsageArray.cpp b/dom/quota/ClientUsageArray.cpp
new file mode 100644
index 0000000000..f0c8095b1c
--- /dev/null
+++ b/dom/quota/ClientUsageArray.cpp
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ClientUsageArray.h"
+
+#include "mozilla/dom/quota/QuotaManager.h"
+#include "mozilla/dom/quota/ResultExtensions.h"
+
+namespace mozilla::dom::quota {
+
+void ClientUsageArray::Serialize(nsACString& aText) const {
+  QuotaManager* quotaManager = QuotaManager::Get();
+  MOZ_ASSERT(quotaManager);
+
+  bool first = true;
+
+  for (Client::Type type : quotaManager->AllClientTypes()) {
+    const Maybe<uint64_t>& clientUsage = ElementAt(type);
+    if (clientUsage.isSome()) {
+      if (first) {
+        first = false;
+      } else {
+        aText.Append(" ");
+      }
+
+      aText.Append(Client::TypeToPrefix(type));
+      aText.AppendInt(clientUsage.value());
+    }
+  }
+}
+
+nsresult ClientUsageArray::Deserialize(const nsACString& aText) {
+  for (const auto& token :
+       nsCCharSeparatedTokenizerTemplate<NS_TokenizerIgnoreNothing>(aText, ' ')
+           .ToRange()) {
+    QM_TRY(OkIf(token.Length() >= 2), NS_ERROR_FAILURE);
+
+    Client::Type clientType;
+    QM_TRY(OkIf(Client::TypeFromPrefix(token.First(), clientType, fallible)),
+           NS_ERROR_FAILURE);
+
+    nsresult rv;
+    const uint64_t usage = Substring(token, 1).ToInteger64(&rv);
+    QM_TRY(MOZ_TO_RESULT(rv));
+
+    ElementAt(clientType) = Some(usage);
+  }
+
+  return NS_OK;
+}
+
+}  // namespace mozilla::dom::quota