72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2021 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
|