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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_COMMON_H
#define NDN_COMMON_H
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
#include <boost/date_time/posix_time/posix_time_types.hpp>
namespace ndn
{
template<class T>
struct Ptr : public boost::shared_ptr<T>
{
Ptr () { }
Ptr (boost::shared_ptr<T> ptr) : boost::shared_ptr<T>(ptr) { }
Ptr (T *ptr) : boost::shared_ptr<T>(ptr) { }
template<class Y>
Ptr & operator = (boost::shared_ptr<Y> ptr)
{
boost::static_pointer_cast<T> (ptr).swap (*this);
// *this = boost::static_pointer_cast<T> (ptr);
return *this;
}
operator Ptr<const T> () const { return *this; }
static Ptr
Create () { return boost::make_shared<T> (); }
};
typedef boost::posix_time::ptime Time;
typedef boost::posix_time::time_duration TimeInterval;
namespace time
{
inline TimeInterval Seconds (int secs) { return boost::posix_time::seconds (secs); }
inline TimeInterval Milliseconds (int msecs) { return boost::posix_time::milliseconds (msecs); }
inline TimeInterval Microseconds (int musecs) { return boost::posix_time::microseconds (musecs); }
inline TimeInterval Seconds (double fractionalSeconds)
{
double seconds, microseconds;
seconds = std::modf (fractionalSeconds, &microseconds);
microseconds *= 1000000;
return time::Seconds((int)seconds) + time::Microseconds((int)microseconds);
}
inline Time Now () { return boost::posix_time::microsec_clock::universal_time (); }
const Time UNIX_EPOCH_TIME = Time (boost::gregorian::date (1970, boost::gregorian::Jan, 1));
inline TimeInterval NowUnixTimestamp ()
{
return TimeInterval (time::Now () - UNIX_EPOCH_TIME);
}
} // time
} // ndn
extern "C" {
#include <ccn/ccn.h>
#include <ccn/charbuf.h>
#include <ccn/keystore.h>
#include <ccn/uri.h>
#include <ccn/bloom.h>
#include <ccn/signing.h>
}
#include <vector>
#include <boost/shared_ptr.hpp>
#include <boost/exception/all.hpp>
#include <boost/function.hpp>
#include <string>
#include <sstream>
#include <map>
#include <utility>
#include <string.h>
#include <boost/iostreams/filter/gzip.hpp>
#include <boost/iostreams/filtering_stream.hpp>
#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/range/iterator_range.hpp>
#include <boost/make_shared.hpp>
namespace ndn {
typedef std::vector<unsigned char> Bytes;
typedef std::vector<std::string>Comps;
typedef boost::shared_ptr<Bytes> BytesPtr;
inline
const unsigned char *
head(const Bytes &bytes)
{
return &bytes[0];
}
inline
unsigned char *
head (Bytes &bytes)
{
return &bytes[0];
}
// --- Bytes operations start ---
inline void
readRaw(Bytes &bytes, const unsigned char *src, size_t len)
{
if (len > 0)
{
bytes.resize(len);
memcpy (head (bytes), src, len);
}
}
inline BytesPtr
readRawPtr (const unsigned char *src, size_t len)
{
if (len > 0)
{
BytesPtr ret (new Bytes (len));
memcpy (head (*ret), src, len);
return ret;
}
else
return BytesPtr ();
}
template<class Msg>
BytesPtr
serializeMsg(const Msg &msg)
{
int size = msg.ByteSize ();
BytesPtr bytes (new Bytes (size));
msg.SerializeToArray (head(*bytes), size);
return bytes;
}
template<class Msg>
boost::shared_ptr<Msg>
deserializeMsg (const Bytes &bytes)
{
boost::shared_ptr<Msg> retval (new Msg ());
if (!retval->ParseFromArray (head (bytes), bytes.size ()))
{
// to indicate an error
return boost::shared_ptr<Msg> ();
}
return retval;
}
template<class Msg>
boost::shared_ptr<Msg>
deserializeMsg (const void *buf, size_t length)
{
boost::shared_ptr<Msg> retval (new Msg ());
if (!retval->ParseFromArray (buf, length))
{
// to indicate an error
return boost::shared_ptr<Msg> ();
}
return retval;
}
template<class Msg>
BytesPtr
serializeGZipMsg(const Msg &msg)
{
std::vector<char> bytes; // Bytes couldn't work
{
boost::iostreams::filtering_ostream out;
out.push(boost::iostreams::gzip_compressor()); // gzip filter
out.push(boost::iostreams::back_inserter(bytes)); // back_inserter sink
msg.SerializeToOstream(&out);
}
BytesPtr uBytes = boost::make_shared<Bytes>(bytes.size());
memcpy(&(*uBytes)[0], &bytes[0], bytes.size());
return uBytes;
}
template<class Msg>
boost::shared_ptr<Msg>
deserializeGZipMsg(const Bytes &bytes)
{
std::vector<char> sBytes(bytes.size());
memcpy(&sBytes[0], &bytes[0], bytes.size());
boost::iostreams::filtering_istream in;
in.push(boost::iostreams::gzip_decompressor()); // gzip filter
in.push(boost::make_iterator_range(sBytes)); // source
boost::shared_ptr<Msg> retval = boost::make_shared<Msg>();
if (!retval->ParseFromIstream(&in))
{
// to indicate an error
return boost::shared_ptr<Msg> ();
}
return retval;
}
// --- Bytes operations end ---
// Exceptions
typedef boost::error_info<struct tag_errmsg, std::string> error_info_str;
} // ndn
#endif // NDN_COMMON_H