eol.h

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#ifndef EOL_H
#define EOL_H
#pragma once
/***************************************************************************
 *   Copyright (C) 2013 Mike Kinghan, imk@burroingroingjoing.com           *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed originally by Mike Kinghan, imk@burroingroingjoing.com    *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
 *                                                                         *
 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Mike Kinghan nor the names of its contributors    *
 *   may be used to endorse or promote products derived from this software *
 *   without specific prior written permission.                            *
 *                                                                         *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
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 **************************************************************************/

#include "traits.h"

template<class CharSeq>
unsigned eol(CharSeq const & seq, size_t off)
{
    static_assert(traits::is_random_access_char_sequence<CharSeq>::value,">:[");
    if (seq.at(off) == '\n') {
        return 1;
    }
    if (seq.at(off) == '\r' && seq.at(off + 1) == '\n') {
        return 2;
    }
    return 0;
}

#endif // EOF