/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2011 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 "osm.h" #include "osmparser.h" #include "basiccurl.h" #include <libxml/parser.h> #include <iostream> #include <fstream> #include <sstream> #include <string> polygon_types osm_way::ptypes; bool osm_dataset::load(const char* filename,const std::string& parser) { if (parser == "libxml2") { return osmparser::parse(this, filename); } return false; } bool osm_dataset::load_from_url(const std::string& url, const std::string& bbox, const std::string& parser) { if (parser == "libxml2") { #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: osm_dataset::load_from_url url=" << url << " bbox=" << bbox << std::endl; #endif std::ostringstream str; // use curl to grab the data // fetch all the data we want - probably from osmxpai str << url << "?bbox=" << bbox; #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: FULL URL " << str.str() << std::endl; #endif CURL_LOAD_DATA* resp = grab_http_response(str.str().c_str()); if (resp != NULL) { char *blx = new char[resp->nbytes + 1]; memcpy(blx, resp->data, resp->nbytes); blx[resp->nbytes] = '\0'; #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: CURL RESPONSE: " << blx << std::endl; #endif delete[] blx; bool success = osmparser::parse(this, resp->data, resp->nbytes); return success; } } return false; } osm_dataset::~osm_dataset() { clear(); } void osm_dataset::clear() { #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: osm_dataset::clear()" << std::endl; std::clog << "Osm Plugin: deleting ways" << std::endl; #endif for (unsigned int count = 0; count < ways.size(); ++count) { delete ways[count]; ways[count] = NULL; } #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: deleting nodes" << std::endl; #endif for (unsigned int count = 0; count < nodes.size(); ++count) { delete nodes[count]; nodes[count] = NULL; } #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: clearing ways/nodes" << std::endl; #endif ways.clear(); nodes.clear(); #ifdef MAPNIK_DEBUG std::clog << "Osm Plugin: done" << std::endl; #endif } std::string osm_dataset::to_string() { std::string result; for (unsigned int count = 0; count < nodes.size(); ++count) { result += nodes[count]->to_string(); } for (unsigned int count = 0; count < ways.size(); ++count) { result += ways[count]->to_string(); } return result; } bounds osm_dataset::get_bounds() { bounds b (-180, -90, 180, 90); for (unsigned int count = 0; count < nodes.size(); ++count) { if(nodes[count]->lon > b.w) b.w = nodes[count]->lon; if(nodes[count]->lon < b.e) b.e = nodes[count]->lon; if(nodes[count]->lat > b.s) b.s = nodes[count]->lat; if(nodes[count]->lat < b.n) b.n = nodes[count]->lat; } return b; } osm_node* osm_dataset::next_node() { if (node_i != nodes.end()) { return *(node_i++); } return NULL; } osm_way* osm_dataset::next_way() { if (way_i != ways.end()) { return *(way_i++); } return NULL; } osm_item* osm_dataset::next_item() { osm_item* item = NULL; if (next_item_mode == Node) { item = next_node(); if (item == NULL) { next_item_mode = Way; rewind_ways(); item = next_way(); } } else { item = next_way(); } return item; } std::set<std::string> osm_dataset::get_keys() { std::set<std::string> keys; for (unsigned int count = 0; count < nodes.size(); ++count) { for (std::map<std::string, std::string>::iterator i = nodes[count]->keyvals.begin(); i != nodes[count]->keyvals.end(); i++) { keys.insert(i->first); } } for (unsigned int count = 0; count < ways.size(); ++count) { for (std::map<std::string, std::string>::iterator i = ways[count]->keyvals.begin(); i != ways[count]->keyvals.end(); i++) { keys.insert(i->first); } } return keys; } std::string osm_item::to_string() { std::ostringstream strm; strm << "id=" << id << std::endl << "Keyvals: " << std::endl; for (std::map<std::string, std::string>::iterator i = keyvals.begin(); i != keyvals.end(); i++) { strm << "Key " << i->first << " Value " << i->second << std::endl; } return strm.str(); } std::string osm_node::to_string() { std::ostringstream strm; strm << "Node: " << osm_item::to_string() << " lat=" << lat <<" lon=" <<lon << std::endl; return strm.str(); } std::string osm_way::to_string() { std::ostringstream strm; strm << "Way: " << osm_item::to_string() << "Nodes in way:"; for (unsigned int count = 0; count < nodes.size(); ++count) { if (nodes[count] != NULL) { strm << nodes[count]->id << " "; } } strm << std::endl; return strm.str(); } bounds osm_way::get_bounds() { bounds b (-180, -90, 180, 90); for (unsigned int count = 0; count < nodes.size(); ++count) { if(nodes[count]->lon > b.w) b.w = nodes[count]->lon; if(nodes[count]->lon < b.e) b.e = nodes[count]->lon; if(nodes[count]->lat > b.s) b.s = nodes[count]->lat; if(nodes[count]->lat < b.n) b.n = nodes[count]->lat; } return b; } bool osm_way::is_polygon() { for (unsigned int count = 0; count < ptypes.ptypes.size(); ++count) { if (keyvals.find(ptypes.ptypes[count].first) != keyvals.end() && keyvals[ptypes.ptypes[count].first] == ptypes.ptypes[count].second) { return true; } } return false; }