/*
 * @project      The CERN Tape Archive (CTA)
 * @copyright    Copyright © 2021-2022 CERN
 * @license      This program is free software, distributed under the terms of the GNU General Public
 *               Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". You can
 *               redistribute it and/or modify it under the terms of the GPL Version 3, or (at your
 *               option) any later version.
 *
 *               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.
 *
 *               In applying this licence, CERN does not waive the privileges and immunities
 *               granted to it by virtue of its status as an Intergovernmental Organization or
 *               submit itself to any jurisdiction.
 */

#pragma once
#include <vector>
#include <string>
#include <regex.h>

/*!
 * Semi-trivial wrapper to regex library, mostly useful for its destructor which will allow RAII
 */
namespace cta::utils {

class Regex {
  public:
    explicit Regex(const std::string& re_str);
    Regex(const Regex& o);
    virtual ~Regex();

    /*!
     * Return a list of matching substrings
     */
    std::vector<std::string> exec(const std::string &s) const;

    /*!
     * Return true if there is at least one matching substring
     */
    bool has_match(const std::string &s) const {
      return ::regexec(&m_re, s.c_str(), 0, nullptr, 0) != REG_NOMATCH;
    }

  private:
    // We keep around the string from which the RE was compiled to allow copying.
    std::string m_reStr;
    regex_t m_re;
    bool m_set;
};

} // namespace cta::utils