interest-filter.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "interest-filter.hpp"
#include "util/regex/regex-pattern-list-matcher.hpp"

namespace ndn {

InterestFilter::InterestFilter(const Name& prefix)
  : m_prefix(prefix)
{
}

InterestFilter::InterestFilter(const char* prefixUri)
  : m_prefix(prefixUri)
{
}

InterestFilter::InterestFilter(const std::string& prefixUri)
  : m_prefix(prefixUri)
{
}

InterestFilter::InterestFilter(const Name& prefix, const std::string& regexFilter)
  : m_prefix(prefix)
  , m_regexFilter(make_shared<RegexPatternListMatcher>(regexFilter, nullptr))
{
}

InterestFilter::operator const Name&() const
{
  if (hasRegexFilter()) {
    BOOST_THROW_EXCEPTION(Error("Please update InterestCallback to accept const InterestFilter&"
                                " (non-trivial InterestFilter is being used)"));
  }
  return m_prefix;
}

bool
InterestFilter::doesMatch(const Name& name) const
{
  return m_prefix.isPrefixOf(name) &&
         (!hasRegexFilter() ||
          m_regexFilter->match(name, m_prefix.size(), name.size() - m_prefix.size()));
}

std::ostream&
operator<<(std::ostream& os, const InterestFilter& filter)
{
  os << filter.getPrefix();
  if (filter.hasRegexFilter()) {
    os << "?regex=" << filter.getRegexFilter();
  }
  return os;
}

} // namespace ndn