From 23e3e307c9bffc62dc3107b1b3285d505fe667a2 Mon Sep 17 00:00:00 2001
From: Alex Zolotarev <alex@mapswithme.com>
Date: Sun, 14 Sep 2014 13:35:41 -0700
Subject: [PATCH] [generator] Convert our .borders files into OSM .poly format
 with generator_tool -export_poly_path <path>

---
 generator/borders_loader.cpp                | 32 +++++++++++++++++++++
 generator/borders_loader.hpp                |  3 ++
 generator/generator_tool/generator_tool.cpp |  8 ++++++
 3 files changed, 43 insertions(+)

diff --git a/generator/borders_loader.cpp b/generator/borders_loader.cpp
index cdb726ee14..d2e4ad50c6 100644
--- a/generator/borders_loader.cpp
+++ b/generator/borders_loader.cpp
@@ -7,6 +7,7 @@
 
 #include "../indexer/geometry_serialization.hpp"
 #include "../indexer/scales.hpp"
+#include "../indexer/mercator.hpp"
 
 #include "../geometry/simplification.hpp"
 #include "../geometry/distance.hpp"
@@ -173,4 +174,35 @@ void GeneratePackedBorders(string const & baseDir)
   generator.WritePolygonsInfo();
 }
 
+void ExportOSMPolylines(string const & outDir, CountriesContainerT const & countries)
+{
+  countries.ForEach( [&](CountryPolygons const & cp)
+  {
+    // .poly file format described here: http://wiki.openstreetmap.org/wiki/Osmosis/Polygon_Filter_File_Format
+    ostringstream stream;
+    stream << cp.m_name << endl;
+
+    size_t regionNumber = 0;
+    cp.m_regions.ForEach( [&](Region const & r)
+    {
+      stream << ++regionNumber << endl;
+
+      r.ForEachPoint( [&](m2::PointD const & pt)
+      {
+        stream << '\t' << std::scientific << MercatorBounds::XToLon(pt.x) << '\t' << MercatorBounds::YToLat(pt.y) << endl;
+      } );
+
+      stream << "END" << endl;
+
+    } );
+
+    stream << "END" << endl;
+
+    FileWriter w(outDir + "/" + cp.m_name + ".poly");
+    string const contents = stream.str();
+    w.Write(contents.data(), contents.size());
+
+  } );
+}
+
 } // namespace borders
diff --git a/generator/borders_loader.hpp b/generator/borders_loader.hpp
index d581171540..4475f01937 100644
--- a/generator/borders_loader.hpp
+++ b/generator/borders_loader.hpp
@@ -32,4 +32,7 @@ namespace borders
   bool LoadCountriesList(string const & baseDir, CountriesContainerT & countries);
 
   void GeneratePackedBorders(string const & baseDir);
+
+  /// Converts our borders into OSM .poly file format
+  void ExportOSMPolylines(string const & outDir, CountriesContainerT const & countries);
 }
diff --git a/generator/generator_tool/generator_tool.cpp b/generator/generator_tool/generator_tool.cpp
index 9626a738fc..45c637878f 100644
--- a/generator/generator_tool/generator_tool.cpp
+++ b/generator/generator_tool/generator_tool.cpp
@@ -61,6 +61,7 @@ DEFINE_bool(check_mwm, false, "Check map file to be correct.");
 DEFINE_string(delete_section, "", "Delete specified section (defines.hpp) from container.");
 DEFINE_bool(fail_on_coasts, false, "Stop and exit with '255' code if some coastlines are not merged.");
 DEFINE_string(address_file_name, "", "Output file name for storing full addresses.");
+DEFINE_string(export_poly_path, "", "Output dir for osm .poly files created from .borders (countires are read from polygons.lst)");
 
 
 string AddSlashIfNeeded(string const & str)
@@ -254,5 +255,12 @@ int main(int argc, char ** argv)
   if (FLAGS_check_mwm)
     check_model::ReadFeatures(datFile);
 
+  if (!FLAGS_export_poly_path.empty())
+  {
+    borders::CountriesContainerT countries;
+    borders::LoadCountriesList(path, countries);
+    borders::ExportOSMPolylines(FLAGS_export_poly_path, countries);
+  }
+
   return 0;
 }