lib/input/remove_hash_comments.h

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 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_INPUT_REMOVE_HASH_COMMENTS_H
#define LIB_INPUT_REMOVE_HASH_COMMENTS_H

#include <lib/input.h>
#include <lib/rcstring/accumulator.h>

class input_remove_hash_comments:
    public input
{
public:
    virtual ~input_remove_hash_comments();

    static pointer create(const input::pointer &deeper);

private:
    input_remove_hash_comments(const input::pointer &deeper);

    input::pointer deeper;

    enum state_t
    {
        state_start_of_line,
        state_white_space,
        state_discarding,
        state_content
    };

    state_t state;

    rcstring_accumulator whitespace;

    // See base class for documentation.
    size_t read_inner(source_location &data_locn, void *data, size_t data_size);

    input_remove_hash_comments();

    input_remove_hash_comments(const input_remove_hash_comments &rhs);

    input_remove_hash_comments &operator=(
        const input_remove_hash_comments &rhs);
};

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