101 lines
3.6 KiB
C++
101 lines
3.6 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include "process_csv_file.hpp"
|
|
#include "../../plugins/input/csv/csv_getline.hpp"
|
|
#include "../../plugins/input/csv/csv_utils.hpp"
|
|
#include <mapnik/datasource.hpp>
|
|
#include <mapnik/geometry/envelope.hpp>
|
|
#include <mapnik/util/utf_conv_win.hpp>
|
|
|
|
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
|
|
#include <mapnik/warning.hpp>
|
|
MAPNIK_DISABLE_WARNING_PUSH
|
|
#include <mapnik/warning_ignore.hpp>
|
|
#include <boost/algorithm/string.hpp>
|
|
#include <boost/interprocess/mapped_region.hpp>
|
|
#include <boost/interprocess/streams/bufferstream.hpp>
|
|
MAPNIK_DISABLE_WARNING_POP
|
|
#include <mapnik/mapped_memory_cache.hpp>
|
|
#endif
|
|
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <sstream>
|
|
|
|
namespace mapnik { namespace detail {
|
|
|
|
template <typename T>
|
|
std::pair<bool,typename T::value_type::first_type> process_csv_file(T & boxes, std::string const& filename, std::string const& manual_headers, char separator, char quote)
|
|
{
|
|
using box_type = typename T::value_type::first_type;
|
|
csv_utils::csv_file_parser p;
|
|
p.manual_headers_ = manual_headers;
|
|
p.separator_ = separator;
|
|
p.quote_ = quote;
|
|
|
|
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
|
|
using file_source_type = boost::interprocess::ibufferstream;
|
|
file_source_type csv_file;
|
|
mapnik::mapped_region_ptr mapped_region;
|
|
boost::optional<mapnik::mapped_region_ptr> memory =
|
|
mapnik::mapped_memory_cache::instance().find(filename, true);
|
|
if (memory)
|
|
{
|
|
mapped_region = *memory;
|
|
csv_file.buffer(static_cast<char*>(mapped_region->get_address()),mapped_region->get_size());
|
|
}
|
|
else
|
|
{
|
|
std::clog << "Error : cannot mmap " << filename << std::endl;
|
|
return std::make_pair(false, box_type(p.extent_));
|
|
}
|
|
#else
|
|
#if defined(_WINDOWS)
|
|
std::ifstream csv_file(mapnik::utf8_to_utf16(filename),std::ios_base::in | std::ios_base::binary);
|
|
#else
|
|
std::ifstream csv_file(filename.c_str(),std::ios_base::in | std::ios_base::binary);
|
|
#endif
|
|
if (!csv_file.is_open())
|
|
{
|
|
std::clog << "Error : cannot open " << filename << std::endl;
|
|
return std::make_pair(false, box_type(p.extent_));
|
|
}
|
|
#endif
|
|
try
|
|
{
|
|
p.parse_csv_and_boxes(csv_file, boxes);
|
|
return std::make_pair(true, box_type(p.extent_));
|
|
}
|
|
catch (std::exception const& ex)
|
|
{
|
|
std::clog << ex.what() << std::endl;
|
|
return std::make_pair(false, box_type(p.extent_));
|
|
}
|
|
}
|
|
|
|
using box_type = mapnik::box2d<float>;
|
|
using item_type = std::pair<box_type, std::pair<std::uint64_t, std::uint64_t>>;
|
|
using boxes_type = std::vector<item_type>;
|
|
template std::pair<bool,box_type> process_csv_file(boxes_type&, std::string const&, std::string const&, char, char);
|
|
|
|
}}
|