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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "GMPStorage.h"
#include "nsClassHashtable.h"
namespace mozilla::gmp {
class GMPMemoryStorage : public GMPStorage {
public:
GMPErr Open(const nsCString& aRecordName) override {
MOZ_ASSERT(!IsOpen(aRecordName));
Record* record = mRecords.GetOrInsertNew(aRecordName);
record->mIsOpen = true;
return GMPNoErr;
}
bool IsOpen(const nsCString& aRecordName) const override {
const Record* record = mRecords.Get(aRecordName);
if (!record) {
return false;
}
return record->mIsOpen;
}
GMPErr Read(const nsCString& aRecordName,
nsTArray<uint8_t>& aOutBytes) override {
const Record* record = mRecords.Get(aRecordName);
if (!record) {
return GMPGenericErr;
}
aOutBytes = record->mData.Clone();
return GMPNoErr;
}
GMPErr Write(const nsCString& aRecordName,
const nsTArray<uint8_t>& aBytes) override {
Record* record = nullptr;
if (!mRecords.Get(aRecordName, &record)) {
return GMPClosedErr;
}
record->mData = aBytes.Clone();
return GMPNoErr;
}
void Close(const nsCString& aRecordName) override {
Record* record = nullptr;
if (!mRecords.Get(aRecordName, &record)) {
return;
}
if (!record->mData.Length()) {
// Record is empty, delete.
mRecords.Remove(aRecordName);
} else {
record->mIsOpen = false;
}
}
private:
struct Record {
nsTArray<uint8_t> mData;
bool mIsOpen = false;
};
nsClassHashtable<nsCStringHashKey, Record> mRecords;
};
already_AddRefed<GMPStorage> CreateGMPMemoryStorage() {
return RefPtr<GMPStorage>(new GMPMemoryStorage()).forget();
}
} // namespace mozilla::gmp