lib/space.h

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2001, 2003, 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 2 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 LIB_SPACE_H
#define LIB_SPACE_H

#include <lib/ac/stdarg.h>
#include <vector>

#include <lib/source_location.h>
#include <lib/gcc-attr.h>
#include <lib/input.h>

class space
{
public:
    virtual ~space();

    void error(const source_location &locn, const char *fmt, ...)
                                                         ATTRIBUTE_PRINTF(3, 4);

    const source_location &
    yak_location(void) const
    {
        return get_location();
    }

protected:
    void discard_blank_lines(void);

    void discard_comments(void);

    void discard_backslash_newline(void);

    rcstring get_file_name(void) const { return filename; }

    void verror(const source_location &locn, const char *fmt, va_list)
                                                         ATTRIBUTE_PRINTF(3, 0);

    space(const rcstring &filename);

    void open(void);

    void close(void);

    typedef std::vector<rcstring> line_t;

    bool read_one_line(line_t &result);

    bool read_one_line(source_location &locn, line_t &result);

    void warning(const source_location &locn, const char *fmt, ...)
                                                         ATTRIBUTE_PRINTF(3, 4);

    void vwarning(const source_location &locn, const char *fmt, va_list ap)
                                                         ATTRIBUTE_PRINTF(3, 0);

protected:
    void lex(void);

    enum token_ty
    {
        token_eof,
        token_eoln,
        token_string
    };

    token_ty get_token(void) const { return token; }

    rcstring get_value(void) const { return token_value; }

    const source_location &get_location(void) const { return locn; }

    void explain_sequence_errors(void);

private:
    int getch(void);

    rcstring filename;

    input::pointer ip;

    bool non_printing_whine;

    token_ty token;

    rcstring token_value;

    int error_count;

    bool discard_comments_flag;

    bool discard_blank_lines_flag;

    bool discard_backslash_newline_flag;

    source_location locn;

    bool current_line_is_blank;

private:
    bool explained_sequence_errors;

    space();

    space(const space &);

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

// vim: set ts=8 sw=4 et :
#endif // LIB_SPACE_H