blob: 8e7a87290490f7db68cc633d7921951423837a5a [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2011 University of California, Los Angeles
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
* Ilya Moiseenko <iliamo@cs.ucla.edu>
*/
#include "ndn-name-components.h"
#include <boost/foreach.hpp>
#include "ns3/log.h"
#include <iostream>
using namespace std;
NS_LOG_COMPONENT_DEFINE ("ndn.Name");
namespace ns3 {
namespace ndn {
ATTRIBUTE_HELPER_CPP (Name);
ATTRIBUTE_HELPER_CPP (NameComponents);
Name::Name (/* root */)
{
}
Name::Name (const std::list<boost::reference_wrapper<const std::string> > &components)
{
BOOST_FOREACH (const boost::reference_wrapper<const std::string> &component, components)
{
Add (component.get ());
}
}
Name::Name (const std::string &prefix)
{
istringstream is (prefix);
is >> *this;
}
Name::Name (const char *prefix)
{
NS_ASSERT (prefix != 0);
istringstream is (prefix);
is >> *this;
}
const std::list<std::string> &
Name::GetComponents () const
{
return m_prefix;
}
std::string
Name::GetLastComponent () const
{
if (m_prefix.size () == 0)
{
return "";
}
return m_prefix.back ();
}
std::list<boost::reference_wrapper<const std::string> >
Name::GetSubComponents (size_t num) const
{
NS_ASSERT_MSG (0<=num && num<=m_prefix.size (), "Invalid number of subcomponents requested");
std::list<boost::reference_wrapper<const std::string> > subComponents;
std::list<std::string>::const_iterator component = m_prefix.begin();
for (size_t i=0; i<num; i++, component++)
{
subComponents.push_back (boost::ref (*component));
}
return subComponents;
}
Name
Name::cut (size_t minusComponents) const
{
Name retval;
std::list<std::string>::const_iterator component = m_prefix.begin ();
for (uint32_t i = 0; i < m_prefix.size () - minusComponents; i++, component++)
{
retval.Add (*component);
}
return retval;
}
size_t
Name::GetSerializedSize () const
{
size_t nameSerializedSize = 2;
for (std::list<std::string>::const_iterator i = this->begin ();
i != this->end ();
i++)
{
nameSerializedSize += 2 + i->size ();
}
NS_ASSERT_MSG (nameSerializedSize < 30000, "Name is too long (> 30kbytes)");
return nameSerializedSize;
}
uint32_t
Name::Serialize (Buffer::Iterator start) const
{
Buffer::Iterator i = start;
i.WriteU16 (static_cast<uint16_t> (this->GetSerializedSize ()-2));
for (std::list<std::string>::const_iterator item = this->begin ();
item != this->end ();
item++)
{
i.WriteU16 (static_cast<uint16_t> (item->size ()));
i.Write (reinterpret_cast<const uint8_t*> (item->c_str ()), item->size ());
}
return i.GetDistanceFrom (start);
}
uint32_t
Name::Deserialize (Buffer::Iterator start)
{
Buffer::Iterator i = start;
uint16_t nameLength = i.ReadU16 ();
while (nameLength > 0)
{
uint16_t length = i.ReadU16 ();
nameLength = nameLength - 2 - length;
uint8_t tmp[length];
i.Read (tmp, length);
this->Add (string (reinterpret_cast<const char*> (tmp), length));
}
return i.GetDistanceFrom (start);
}
void
Name::Print (std::ostream &os) const
{
for (const_iterator i=m_prefix.begin(); i!=m_prefix.end(); i++)
{
os << "/" << *i;
}
if (m_prefix.size ()==0) os << "/";
}
std::ostream &
operator << (std::ostream &os, const Name &components)
{
components.Print (os);
return os;
}
std::istream &
operator >> (std::istream &is, Name &components)
{
istream_iterator<char> eos; // end of stream
std::string component = "";
istream_iterator<char> it (is);
for (; it != eos; it++)
{
if (*it == '/')
{
if (component != "")
components.Add (component);
component = "";
}
else
component.push_back (*it);
}
if (component != "")
components.Add (component);
is.clear ();
// NS_LOG_ERROR (components << ", bad: " << is.bad () <<", fail: " << is.fail ());
return is;
}
} // ndn
} // ns3