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//
//      aegis - project change supervisor
//      Copyright (C) 2004-2006, 2008, 2009, 2012 Peter Miller
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; either version 3 of the License, 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.
//
//      You should have received a copy of the GNU General Public License
//      along with this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef COMMON_REGULA_EXPRE_H
#define COMMON_REGULA_EXPRE_H

#include <common/ac/regex.h>
#include <common/nstring.h>

class regular_expression
{
public:
    virtual ~regular_expression();

    regular_expression(const nstring &pattern, bool icase = false);

    bool matches(const char *text, size_t &so, size_t &eo);

    bool match(const nstring &arg, size_t offset = 0);

    const char *strerror() const;

    bool match_and_substitute(const nstring &rhs, const nstring &actual,
        long how_many_times, nstring &output);

private:
    nstring errstr;

    void set_error(int err);

    nstring lhs;

    bool icase;

    bool compile();

    bool compiled;

    regex_t preg;

    regmatch_t regmatch[10];

    regular_expression();

    regular_expression(const regular_expression &);

    regular_expression &operator=(const regular_expression &);
};

#endif // COMMON_REGULA_EXPRE_H
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