libcryfs/implementations/onblocks/BlobOnBlocks.h

#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();

  uint64_t size() const override;
  void resize(uint64_t numBytes) override;

  void read(void *target, uint64_t offset, uint64_t size) const;
  void write(const void *source, uint64_t offset, uint64_t size);

  void flush() const override;

private:
   //TODO Don't pass DataLeafNode, but pointer to its data region? Does this work with both read/write (const/nonconst)?
   void traverseLeaves(uint64_t offsetBytes, uint64_t sizeBytes, std::function<void (datanodestore::DataLeafNode*, uint64_t, uint32_t, uint32_t)>) const;

  std::unique_ptr<datatreestore::DataTree> _datatree;
};

}
}

#endif