73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
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/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_CSV_GETLINE_HPP
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#define MAPNIK_CSV_GETLINE_HPP
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#include <string>
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#include <istream>
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#include <streambuf>
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namespace csv_utils
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{
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template <class CharT, class Traits, class Allocator>
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std::basic_istream<CharT, Traits>& getline_csv(std::istream& is, std::basic_string<CharT,Traits,Allocator>& s, CharT delim, CharT quote)
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{
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typename std::basic_string<CharT,Traits,Allocator>::size_type nread = 0;
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typename std::basic_istream<CharT, Traits>::sentry sentry(is, true);
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if (sentry)
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{
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std::basic_streambuf<CharT, Traits>* buf = is.rdbuf();
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s.clear();
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bool has_quote = false;
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while (nread < s.max_size())
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{
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int c1 = buf->sbumpc();
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if (Traits::eq_int_type(c1, Traits::eof()))
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{
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is.setstate(std::ios_base::eofbit);
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break;
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}
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else
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{
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++nread;
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CharT c = Traits::to_char_type(c1);
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if (Traits::eq(c, quote))
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has_quote = !has_quote;
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if (!Traits::eq(c, delim) || has_quote)
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s.push_back(c);
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else
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break;// Character is extracted but not appended.
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}
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}
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}
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if (nread == 0 || nread >= s.max_size())
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is.setstate(std::ios_base::failbit);
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return is;
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}
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}
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#endif // MAPNIK_CSV_GETLINE_HPP
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