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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2013, Regents of the University of California
* Alexander Afanasyev
* Zhenkai Zhu
*
* BSD license, See the LICENSE file for more information
*
* Author: Zhenkai Zhu <zhenkai@cs.ucla.edu>
* Alexander Afanasyev <alexander.afanasyev@ucla.edu>
*/
#ifndef NDN_SIGNED_BLOB_H
#define NDN_SIGNED_BLOB_H
#include "blob.h"
namespace ndn {
/**
* @brief Class representing a blob, which has a signed portion (e.g., bytes of DATA packet)
*/
class SignedBlob : public Blob
{
public:
/**
* @brief Set signed portion of the blob
* @param offset An offset from the beginning of the blob
* @param size Size of the signed portion of the blob
*/
inline void
setSignedPortion (size_t offset, size_t size);
/**
* @brief Get begin iterator to a signed portion of the blob
*/
inline const_iterator
signed_begin () const;
/**
* @brief Get end iterator of a signed portion of the blob
*/
inline const_iterator
signed_end () const;
/**
* @brief Get pointer to a first byte of the signed blob
*/
inline const char*
signed_buf () const;
/**
* @brief Get size of the signed blob
*/
inline size_t
signed_size () const;
private:
const_iterator m_signedBegin;
const_iterator m_signedEnd;
};
inline void
SignedBlob::setSignedPortion (size_t offset, size_t size)
{
m_signedBegin = begin () + offset;
m_signedEnd = begin () + offset + size;
}
inline SignedBlob::const_iterator
SignedBlob::signed_begin () const
{
return m_signedBegin;
}
inline SignedBlob::const_iterator
SignedBlob::signed_end () const
{
return m_signedEnd;
}
inline const char*
SignedBlob::signed_buf () const
{
return &*m_signedBegin;
}
inline size_t
SignedBlob::signed_size () const
{
return m_signedEnd - m_signedBegin;
}
} // ndn
#endif // NDN_SIGNED_BLOB_H