dom/quota/ClientUsageArray.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "ClientUsageArray.h"
   8
   9 #include "mozilla/dom/quota/QuotaManager.h"
  10 #include "mozilla/dom/quota/ResultExtensions.h"
  11
  12 namespace mozilla::dom::quota {
  13
  14 void ClientUsageArray::Serialize(nsACString& aText) const {
  15   QuotaManager* quotaManager = QuotaManager::Get();
  16   MOZ_ASSERT(quotaManager);
  17
  18   bool first = true;
  19
  20   for (Client::Type type : quotaManager->AllClientTypes()) {
  21     const Maybe<uint64_t>& clientUsage = ElementAt(type);
  22     if (clientUsage.isSome()) {
  23       if (first) {
  24         first = false;
  25       } else {
  26         aText.Append(" ");
  27       }
  28
  29       aText.Append(Client::TypeToPrefix(type));
  30       aText.AppendInt(clientUsage.value());
  31     }
  32   }
  33 }
  34
  35 nsresult ClientUsageArray::Deserialize(const nsACString& aText) {
  36   for (const auto& token :
  37        nsCCharSeparatedTokenizerTemplate<NS_TokenizerIgnoreNothing>(aText, ' ')
  38            .ToRange()) {
  39     QM_TRY(OkIf(token.Length() >= 2), NS_ERROR_FAILURE);
  40
  41     Client::Type clientType;
  42     QM_TRY(OkIf(Client::TypeFromPrefix(token.First(), clientType, fallible)),
  43            NS_ERROR_FAILURE);
  44
  45     nsresult rv;
  46     const uint64_t usage = Substring(token, 1).ToInteger64(&rv);
  47     QM_TRY(MOZ_TO_RESULT(rv));
  48
  49     ElementAt(clientType) = Some(usage);
  50   }
  51
  52   return NS_OK;
  53 }
  54
  55 }  // namespace mozilla::dom::quota