69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FileSystemHashStorageFunction.h"
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#include "FileSystemHashSource.h"
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#include "mozilla/dom/FileSystemTypes.h"
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#include "mozilla/dom/quota/QuotaCommon.h"
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#include "mozilla/storage/Variant.h"
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#include "nsString.h"
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#include "nsStringFwd.h"
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namespace mozilla::dom::fs::data {
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NS_IMPL_ISUPPORTS(FileSystemHashStorageFunction, mozIStorageFunction)
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NS_IMETHODIMP
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FileSystemHashStorageFunction::OnFunctionCall(
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mozIStorageValueArray* aFunctionArguments, nsIVariant** aResult) {
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MOZ_ASSERT(aFunctionArguments);
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MOZ_ASSERT(aResult);
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const int32_t parentIndex = 0;
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const int32_t childIndex = 1;
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#ifdef DEBUG
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{
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uint32_t argCount;
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MOZ_ALWAYS_SUCCEEDS(aFunctionArguments->GetNumEntries(&argCount));
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MOZ_ASSERT(argCount == 2u);
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int32_t parentType = mozIStorageValueArray::VALUE_TYPE_INTEGER;
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MOZ_ALWAYS_SUCCEEDS(
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aFunctionArguments->GetTypeOfIndex(parentIndex, &parentType));
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MOZ_ASSERT(parentType == mozIStorageValueArray::VALUE_TYPE_BLOB);
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int32_t childType = mozIStorageValueArray::VALUE_TYPE_INTEGER;
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MOZ_ALWAYS_SUCCEEDS(
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aFunctionArguments->GetTypeOfIndex(childIndex, &childType));
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MOZ_ASSERT(childType == mozIStorageValueArray::VALUE_TYPE_BLOB);
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}
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#endif
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QM_TRY_INSPECT(
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const EntryId& parentHash,
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MOZ_TO_RESULT_INVOKE_MEMBER_TYPED(nsCString, aFunctionArguments,
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GetBlobAsUTF8String, parentIndex));
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QM_TRY_INSPECT(const Name& childName, MOZ_TO_RESULT_INVOKE_MEMBER_TYPED(
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nsString, aFunctionArguments,
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GetBlobAsString, childIndex));
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QM_TRY_INSPECT(const EntryId& buffer,
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FileSystemHashSource::GenerateHash(parentHash, childName)
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.mapErr([](const auto& aRv) { return ToNSResult(aRv); }));
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nsCOMPtr<nsIVariant> result =
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new mozilla::storage::BlobVariant(std::make_pair(
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static_cast<const void*>(buffer.get()), int(buffer.Length())));
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result.forget(aResult);
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return NS_OK;
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}
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} // namespace mozilla::dom::fs::data
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