/**
 * @author: Jeff Thompson
 * See COPYING for copyright and distribution information.
 */

#ifndef NDN_COMMON_HPP
#define NDN_COMMON_HPP

#include <vector>
#include "../config.h"

// Depending on where ./configure found shared_ptr, define the ptr_lib namespace.
// We always use ndn::ptr_lib.
#if HAVE_STD_SHARED_PTR
#include <memory>
namespace ndn { namespace ptr_lib = std; }
#elif HAVE_BOOST_SHARED_PTR
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
namespace ndn { namespace ptr_lib = boost; }
#else
// Use the boost header files in this distribution that were extracted with:
// cd <INCLUDE DIRECTORY WITH boost SUBDIRECTORY>
// dist/bin/bcp --namespace=ndnboost shared_ptr make_shared weak_ptr function bind <NDN-CPP ROOT>
// cd <NDN-CPP ROOT>
// mv boost ndnboost
// cd ndnboost
// (unset LANG; find . -type f -exec sed -i '' 's/\<boost\//\<ndnboost\//g' {} +)
// (unset LANG; find . -type f -exec sed -i '' 's/\"boost\//\"ndnboost\//g' {} +)
#include <ndnboost/shared_ptr.hpp>
#include <ndnboost/make_shared.hpp>
namespace ndn { namespace ptr_lib = ndnboost; }
#endif

// Depending on where ./configure found function, define the func_lib namespace.
// We always use ndn::func_lib.
#if HAVE_STD_FUNCTION
#include <functional>
namespace ndn { namespace func_lib = std; }
#elif HAVE_BOOST_FUNCTION
#include <boost/function.hpp>
#include <boost/bind.hpp>
namespace ndn { namespace func_lib = boost; }
#else
// Use the boost header files in this distribution that were extracted as above:
#include <ndnboost/function.hpp>
#include <ndnboost/bind.hpp>
namespace ndn { namespace func_lib = ndnboost; }
#endif

namespace ndn {
  
/**
 * Clear the vector and copy valueLength bytes from value.
 * @param v the vector to copy to
 * @param value the array of bytes, or 0 to not copy
 * @param valueLength the length of value
 */
static inline void setVector(std::vector<unsigned char>& vec, const unsigned char *value, unsigned int valueLength) 
{
  vec.clear();
  if (value)
    vec.insert(vec.begin(), value, value + valueLength);  
}
 
/**
 * Return the hex representation of the bytes in array.
 * @param array The array of bytes.
 * @return Hex string.
 */
std::string toHex(const std::vector<unsigned char>& array);

}

#endif