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/* -*- Mode: C++; tab-width: 4; 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/. */
#ifndef _nsCacheMetaData_h_
#define _nsCacheMetaData_h_
#include "nspr.h"
#include "nscore.h"
class nsICacheMetaDataVisitor;
class nsCacheMetaData {
public:
nsCacheMetaData() : mBuffer(nullptr), mBufferSize(0), mMetaSize(0) {}
~nsCacheMetaData() {
mBufferSize = mMetaSize = 0;
free(mBuffer);
mBuffer = nullptr;
}
const char* GetElement(const char* key);
nsresult SetElement(const char* key, const char* value);
uint32_t Size(void) { return mMetaSize; }
nsresult FlattenMetaData(char* buffer, uint32_t bufSize);
nsresult UnflattenMetaData(const char* buffer, uint32_t bufSize);
nsresult VisitElements(nsICacheMetaDataVisitor* visitor);
private:
nsresult EnsureBuffer(uint32_t size);
char* mBuffer;
uint32_t mBufferSize;
uint32_t mMetaSize;
};
#endif // _nsCacheMetaData_h
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