//
// RegexString.hh for pekwm
// Copyright (C)  2003-2005 Claes Nasten <pekdon{@}pekdon{.}net>
//
// This program is licensed under the GNU GPL.
// See the LICENSE file for more information.
//

#include "../config.h"

#ifndef _REGEX_STRING_HH_
#define _REGEX_STRING_HH_

#include "Types.hh"

#include <string>
#include <list>

extern "C" {
#include <sys/types.h>
#ifdef HAVE_PCRE
#include <pcreposix.h>
#else // !HAVE_PCRE
#include <regex.h>
#endif // HAVE_PCRE
}

//! @brief POSIX regular expression wrapper.
class RegexString
{
public:
  //! @brief Part of parsed replace data.
  class Part
  {
  public:
    //! @brief RegexString::Part constructor.
    Part (const std::string &or_string, int i_ref = -1) :
        m_o_string (or_string), m_i_ref (i_ref) { }
    //! @brief RegexString::Part destructor.
    ~Part (void) { }

    //! @brief Returns string data.
    const std::string &get_string (void) { return m_o_string; }
    //! @brief Returns reference number.
    int get_reference (void) { return m_i_ref; }

  private:
    std::string m_o_string; //!< String data at item.
    int m_i_ref; //!< Reference string should be replaced with.
  };

  RegexString (void);
  ~RegexString (void);

  //! @brief Returns parse_match data status.
  bool is_match_ok (void) { return m_reg_ok; }

  bool ed_s (std::string &or_string);

  bool parse_match (const std::string &or_match);
  bool parse_replace (const std::string &or_replace);
  bool parse_ed_s (const std::string &or_ed_s);

  bool operator== (const std::string &or_rhs);

private:
  void free_regex (void);

private:
  regex_t m_o_regex; //!< Compiled regular expression holder.
  bool m_reg_ok; //!< m_o_regex compiled ok flag.

  int m_i_ref_max; //!< Highest reference used.
  std::list<RegexString::Part> m_o_ref_list; //!< List of RegexString::Part holding data generated by parse_replace.
};

#endif // _REGEX_STRING_HH_