blob: 2c6da84bfde5c798dc39e1d9cd95009b44fe5ef6 [file] [log] [blame]
Davide Pesavento19745dc2017-11-05 19:34:31 -05001/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
Davide Pesavento844b0932018-05-07 01:00:16 -04003 * Copyright (c) 2013-2018 Regents of the University of California.
Davide Pesavento19745dc2017-11-05 19:34:31 -05004 *
5 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
6 *
7 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8 * terms of the GNU Lesser General Public License as published by the Free Software
9 * Foundation, either version 3 of the License, or (at your option) any later version.
10 *
11 * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14 *
15 * You should have received copies of the GNU General Public License and GNU Lesser
16 * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17 * <http://www.gnu.org/licenses/>.
18 *
19 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20 *
21 * @author Yingdi Yu <http://irl.cs.ucla.edu/~yingdi/>
22 */
23
24#include "regex-component-matcher.hpp"
25#include "regex-pseudo-matcher.hpp"
26
27namespace ndn {
28
Davide Pesavento19745dc2017-11-05 19:34:31 -050029RegexComponentMatcher::RegexComponentMatcher(const std::string& expr,
30 shared_ptr<RegexBackrefManager> backrefManager,
31 bool isExactMatch)
32 : RegexMatcher(expr, EXPR_COMPONENT, std::move(backrefManager))
33 , m_isExactMatch(isExactMatch)
34{
35 compile();
36}
37
38void
39RegexComponentMatcher::compile()
40{
Davide Pesavento90db7ee2018-06-10 11:33:31 -040041 m_componentRegex.assign(m_expr);
Davide Pesavento19745dc2017-11-05 19:34:31 -050042
43 m_pseudoMatchers.clear();
44 m_pseudoMatchers.push_back(make_shared<RegexPseudoMatcher>());
45
Davide Pesavento844b0932018-05-07 01:00:16 -040046 for (size_t i = 1; i <= m_componentRegex.mark_count(); i++) {
Davide Pesavento19745dc2017-11-05 19:34:31 -050047 m_pseudoMatchers.push_back(make_shared<RegexPseudoMatcher>());
48 m_backrefManager->pushRef(m_pseudoMatchers.back());
49 }
50}
51
52bool
53RegexComponentMatcher::match(const Name& name, size_t offset, size_t len)
54{
55 m_matchResult.clear();
56
57 if (m_expr.empty()) {
58 m_matchResult.push_back(name.get(offset));
59 return true;
60 }
61
62 if (!m_isExactMatch)
63 BOOST_THROW_EXCEPTION(Error("Non-exact component search is not supported yet"));
64
Davide Pesavento90db7ee2018-06-10 11:33:31 -040065 std::smatch subResult;
Davide Pesavento19745dc2017-11-05 19:34:31 -050066 std::string targetStr = name.get(offset).toUri();
Davide Pesavento90db7ee2018-06-10 11:33:31 -040067 if (std::regex_match(targetStr, subResult, m_componentRegex)) {
Davide Pesavento844b0932018-05-07 01:00:16 -040068 for (size_t i = 1; i <= m_componentRegex.mark_count(); i++) {
Davide Pesavento19745dc2017-11-05 19:34:31 -050069 m_pseudoMatchers[i]->resetMatchResult();
70 m_pseudoMatchers[i]->setMatchResult(subResult[i]);
71 }
72 m_matchResult.push_back(name.get(offset));
73 return true;
74 }
75
76 return false;
77}
78
79} // namespace ndn