interest-filter.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2021 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library 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 Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#ifndef NDN_CXX_INTEREST_FILTER_HPP
#define NDN_CXX_INTEREST_FILTER_HPP

#include "ndn-cxx/name.hpp"

namespace ndn {

class RegexPatternListMatcher;

class InterestFilter
{
public:
  class Error : public std::runtime_error
  {
  public:
    using std::runtime_error::runtime_error;
  };

  InterestFilter(const Name& prefix);

  InterestFilter(const char* prefixUri);

  InterestFilter(const std::string& prefixUri);

  InterestFilter(const Name& prefix, const std::string& regexFilter);

  operator const Name&() const;

  bool
  doesMatch(const Name& name) const;

  const Name&
  getPrefix() const
  {
    return m_prefix;
  }

  bool
  hasRegexFilter() const
  {
    return m_regexFilter != nullptr;
  }

  const RegexPatternListMatcher&
  getRegexFilter() const
  {
    return *m_regexFilter;
  }

  NDN_CXX_NODISCARD bool
  allowsLoopback() const
  {
    return m_allowsLoopback;
  }

  InterestFilter&
  allowLoopback(bool wantLoopback)
  {
    m_allowsLoopback = wantLoopback;
    return *this;
  }

private:
  Name m_prefix;
  shared_ptr<RegexPatternListMatcher> m_regexFilter;
  bool m_allowsLoopback = true;
};

std::ostream&
operator<<(std::ostream& os, const InterestFilter& filter);

} // namespace ndn

#endif // NDN_CXX_INTEREST_FILTER_HPP