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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2025 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 <iostream>
#include <vector>
#include <string>
#include <boost/algorithm/string.hpp>
#include <boost/program_options.hpp>
#include <mapnik/mapnik.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/geometry/box2d.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/util/fs.hpp>
#include <mapnik/feature_layer_desc.hpp>
#include "../shapeindex/quadtree.hpp"
#include "ogr_converter.cpp"
#include "ogr_datasource.cpp"
#include "ogr_featureset.cpp"
#include "ogr_index_featureset.cpp"
using mapnik::datasource_exception;
int const MAXDEPTH = 64;
int const DEFAULT_DEPTH = 8;
double const MINRATIO = 0.5;
double const MAXRATIO = 0.8;
double const DEFAULT_RATIO = 0.55;
int main(int argc, char** argv)
{
using namespace mapnik;
namespace po = boost::program_options;
using std::string;
using std::vector;
bool verbose = false;
unsigned int depth = DEFAULT_DEPTH;
double ratio = DEFAULT_RATIO;
vector<string> ogr_files;
mapnik::setup();
try
{
po::options_description desc("ogrindex utility");
// clang-format off
desc.add_options()
("help,h", "produce usage message")
("version,V", "print version string")
("verbose,v", "verbose output")
("depth,d", po::value<unsigned int>(), "max tree depth\n(default 8)")
("ratio,r", po::value<double>(), "split ratio (default 0.55)")
("ogr_files", po::value<vector<string> >(), "ogr supported files to index: file1 file2 ...fileN")
;
// clang-format on
po::positional_options_description p;
p.add("ogr_files", -1);
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).options(desc).positional(p).run(), vm);
po::notify(vm);
if (vm.count("version"))
{
std::clog << "version 0.1.0" << std::endl;
return 1;
}
if (vm.count("help"))
{
std::clog << desc << std::endl;
return 1;
}
if (vm.count("depth"))
{
depth = vm["depth"].as<unsigned int>();
}
if (vm.count("ratio"))
{
ratio = vm["ratio"].as<double>();
}
if (vm.count("ogr_files"))
{
ogr_files = vm["ogr_files"].as<vector<string>>();
}
}
catch (...)
{
std::clog << "Exception of unknown type!" << std::endl;
return -1;
}
std::clog << "max tree depth:" << depth << std::endl;
std::clog << "split ratio:" << ratio << std::endl;
vector<string>::const_iterator itr = ogr_files.begin();
if (itr == ogr_files.end())
{
std::clog << "no ogr files to index" << std::endl;
return 0;
}
while (itr != ogr_files.end())
{
std::clog << "processing " << *itr << std::endl;
std::string ogrname(*itr++);
if (!mapnik::util::exists(ogrname))
{
std::clog << "error : file " << ogrname << " doesn't exists" << std::endl;
continue;
}
// TODO - layer names don't match dataset name, so this will break for
// any layer types of ogr than shapefiles, etc
size_t breakpoint = ogrname.find_last_of(".");
if (breakpoint == string::npos)
breakpoint = ogrname.length();
std::string ogrlayername(ogrname.substr(0, breakpoint));
if (mapnik::util::exists(ogrlayername + ".ogrindex"))
{
std::clog << "error : " << ogrlayername << ".ogrindex file already exists for " << ogrname << std::endl;
continue;
}
mapnik::parameters params;
params["type"] = "ogr";
params["file"] = ogrname;
// unsigned first = 0;
params["layer_by_index"] = 0; // ogrlayername;
try
{
ogr_datasource ogr(params);
box2d<double> extent = ogr.envelope();
quadtree<int> tree(extent, depth, ratio);
int count = 0;
std::clog << "file:" << ogrname << std::endl;
std::clog << "layer:" << ogrlayername << std::endl;
std::clog << "extent:" << extent << std::endl;
mapnik::query q(extent, 1.0);
mapnik::featureset_ptr itr = ogr.features(q);
while (true)
{
mapnik::feature_ptr fp = itr->next();
if (!fp)
{
break;
}
box2d<double> item_ext = fp->envelope();
tree.insert(count, item_ext);
if (verbose)
{
std::clog << "record number " << (count + 1) << " box=" << item_ext << std::endl;
}
++count;
}
std::clog << " number shapes=" << count << std::endl;
std::fstream file((ogrlayername + ".ogrindex").c_str(),
std::ios::in | std::ios::out | std::ios::trunc | std::ios::binary);
if (!file)
{
std::clog << "cannot open ogrindex file for writing file \"" << (ogrlayername + ".ogrindex") << "\""
<< std::endl;
}
else
{
tree.trim();
std::clog << " number nodes=" << tree.count() << std::endl;
file.exceptions(std::ios::failbit | std::ios::badbit);
tree.write(file);
file.flush();
file.close();
}
}
// catch problem at the datasource creation
catch (mapnik::datasource_exception const& ex)
{
std::clog << ex.what() << "\n";
return -1;
}
catch (...)
{
std::clog << "unknown exception..." << "\n";
return -1;
}
}
std::clog << "done!" << std::endl;
return 0;
}
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