libcryfs/implementations/onblocks/BlobOnBlocks.h
2015-03-06 02:21:31 +01:00

45 lines
1.0 KiB
C++

#pragma once
#ifndef BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_BLOBONBLOCKS_H_
#define BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_BLOBONBLOCKS_H_
#include "../../interface/Blob.h"
#include <memory>
namespace blobstore {
namespace onblocks {
namespace datanodestore {
class DataLeafNode;
}
namespace datatreestore {
class DataTree;
}
class BlobOnBlocks: public Blob {
public:
BlobOnBlocks(std::unique_ptr<datatreestore::DataTree> datatree);
virtual ~BlobOnBlocks();
blockstore::Key key() const override;
uint64_t size() const override;
void resize(uint64_t numBytes) override;
void read(void *target, uint64_t offset, uint64_t size) const override;
void write(const void *source, uint64_t offset, uint64_t size) override;
std::unique_ptr<datatreestore::DataTree> releaseTree();
private:
void traverseLeaves(uint64_t offsetBytes, uint64_t sizeBytes, std::function<void (uint64_t, datanodestore::DataLeafNode *, uint32_t, uint32_t)>) const;
void resizeIfSmallerThan(uint64_t neededSize);
std::unique_ptr<datatreestore::DataTree> _datatree;
};
}
}
#endif