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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2015 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef MAPNIK_CSV_GETLINE_HPP
#define MAPNIK_CSV_GETLINE_HPP
#include <string>
#include <istream>
#include <streambuf>
namespace csv_utils
{
template <class CharT, class Traits, class Allocator>
std::basic_istream<CharT, Traits>& getline_csv(std::istream& is, std::basic_string<CharT,Traits,Allocator>& s, CharT delim, CharT quote)
{
typename std::basic_string<CharT,Traits,Allocator>::size_type nread = 0;
typename std::basic_istream<CharT, Traits>::sentry sentry(is, true);
if (sentry)
{
std::basic_streambuf<CharT, Traits>* buf = is.rdbuf();
s.clear();
bool has_quote = false;
while (nread < s.max_size())
{
int c1 = buf->sbumpc();
if (Traits::eq_int_type(c1, Traits::eof()))
{
is.setstate(std::ios_base::eofbit);
break;
}
else
{
++nread;
CharT c = Traits::to_char_type(c1);
if (Traits::eq(c, quote))
has_quote = !has_quote;
if (!Traits::eq(c, delim) || has_quote)
s.push_back(c);
else
break;// Character is extracted but not appended.
}
}
}
if (nread == 0 || nread >= s.max_size())
is.setstate(std::ios_base::failbit);
return is;
}
}
#endif // MAPNIK_CSV_GETLINE_HPP
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