+ # initialise these variables outside of the loop so that they
+ # stay in scope and don't get free'd up by the GC during the
+ # loop.
+ gpx_id = -1
+ trackid = -1
+ track = nil
+ trkseg = nil
+ anon_track = nil
+ anon_trkseg = nil
+ gpx_file = nil
+ timestamps = false
+
+ points.each do |point|
+ if gpx_id != point.gpx_id
+ gpx_id = point.gpx_id
+ trackid = -1
+ gpx_file = Trace.find(gpx_id)
+
+ if gpx_file.trackable?
+ track = XML::Node.new 'trk'
+ doc.root << track
+ timestamps = true
+
+ if gpx_file.identifiable?
+ track << (XML::Node.new("name") << gpx_file.name)
+ track << (XML::Node.new("desc") << gpx_file.description)
+ track << (XML::Node.new("url") << url_for(:controller => 'trace', :action => 'view', :id => gpx_file.id))
+ end
+ else
+ # use the anonymous track segment if the user hasn't allowed
+ # their GPX points to be tracked.
+ timestamps = false
+ if anon_track.nil?
+ anon_track = XML::Node.new 'trk'
+ doc.root << anon_track
+ end
+ track = anon_track
+ end
+ end
+
+ if trackid != point.trackid
+ if gpx_file.trackable?
+ trkseg = XML::Node.new 'trkseg'
+ track << trkseg
+ trackid = point.trackid
+ else
+ if anon_trkseg.nil?
+ anon_trkseg = XML::Node.new 'trkseg'
+ anon_track << anon_trkseg
+ end
+ trkseg = anon_trkseg
+ end
+ end
+
+ trkseg << point.to_xml_node(timestamps)
+ end
+
+ response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
+
+ render :text => doc.to_s, :content_type => "text/xml"
+ end
+
+ # This is probably the most common call of all. It is used for getting the
+ # OSM data for a specified bounding box, usually for editing. First the
+ # bounding box (bbox) is checked to make sure that it is sane. All nodes
+ # are searched, then all the ways that reference those nodes are found.
+ # All Nodes that are referenced by those ways are fetched and added to the list
+ # of nodes.
+ # Then all the relations that reference the already found nodes and ways are
+ # fetched. All the nodes and ways that are referenced by those ways are then
+ # fetched. Finally all the xml is returned.
+ def map
+ # Figure out the bbox
+ bbox = params['bbox']
+
+ unless bbox and bbox.count(',') == 3
+ # alternatively: report_error(TEXT['boundary_parameter_required']
+ report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat")
+ return
+ end
+
+ bbox = bbox.split(',')
+
+ min_lon, min_lat, max_lon, max_lat = sanitise_boundaries(bbox)
+
+ # check boundary is sane and area within defined
+ # see /config/application.yml
+ begin
+ check_boundaries(min_lon, min_lat, max_lon, max_lat)
+ rescue Exception => err
+ report_error(err.message)
+ return
+ end
+
+ # FIXME um why is this area using a different order for the lat/lon from above???
+ @nodes = Node.find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => {:visible => true}, :include => :node_tags, :limit => APP_CONFIG['max_number_of_nodes']+1)
+ # get all the nodes, by tag not yet working, waiting for change from NickB
+ # need to be @nodes (instance var) so tests in /spec can be performed
+ #@nodes = Node.search(bbox, params[:tag])
+
+ node_ids = @nodes.collect(&:id)
+ if node_ids.length > APP_CONFIG['max_number_of_nodes']
+ report_error("You requested too many nodes (limit is #{APP_CONFIG['max_number_of_nodes']}). Either request a smaller area, or use planet.osm")
+ return
+ end
+ if node_ids.length == 0
+ render :text => "<osm version='#{API_VERSION}' generator='#{GENERATOR}'></osm>", :content_type => "text/xml"
+ return
+ end
+
+ doc = OSM::API.new.get_xml_doc
+
+ # add bounds
+ bounds = XML::Node.new 'bounds'
+ bounds['minlat'] = min_lat.to_s
+ bounds['minlon'] = min_lon.to_s
+ bounds['maxlat'] = max_lat.to_s
+ bounds['maxlon'] = max_lon.to_s
+ doc.root << bounds
+
+ # get ways
+ # find which ways are needed
+ ways = Array.new
+ if node_ids.length > 0
+ way_nodes = WayNode.find_all_by_node_id(node_ids)
+ way_ids = way_nodes.collect { |way_node| way_node.id[0] }
+ ways = Way.find(way_ids, :include => [:way_nodes, :way_tags])
+
+ list_of_way_nodes = ways.collect { |way|
+ way.way_nodes.collect { |way_node| way_node.node_id }
+ }
+ list_of_way_nodes.flatten!
+
+ else
+ list_of_way_nodes = Array.new
+ end
+
+ # - [0] in case some thing links to node 0 which doesn't exist. Shouldn't actually ever happen but it does. FIXME: file a ticket for this
+ nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
+
+ if nodes_to_fetch.length > 0
+ @nodes += Node.find(nodes_to_fetch, :include => :node_tags)
+ end
+
+ visible_nodes = {}
+ changeset_cache = {}
+ user_display_name_cache = {}
+
+ @nodes.each do |node|
+ if node.visible?
+ doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
+ visible_nodes[node.id] = node
+ end
+ end
+
+ way_ids = Array.new
+ ways.each do |way|
+ if way.visible?
+ doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
+ way_ids << way.id
+ end
+ end
+
+ relations = Relation.find_for_nodes(visible_nodes.keys, :conditions => {:visible => true}) +
+ Relation.find_for_ways(way_ids, :conditions => {:visible => true})
+
+ # we do not normally return the "other" partners referenced by an relation,
+ # e.g. if we return a way A that is referenced by relation X, and there's
+ # another way B also referenced, that is not returned. But we do make
+ # an exception for cases where an relation references another *relation*;
+ # in that case we return that as well (but we don't go recursive here)
+ relations += Relation.find_for_relations(relations.collect { |r| r.id }, :conditions => {:visible => true})
+
+ # this "uniq" may be slightly inefficient; it may be better to first collect and output
+ # all node-related relations, then find the *not yet covered* way-related ones etc.
+ relations.uniq.each do |relation|
+ doc.root << relation.to_xml_node(nil, changeset_cache, user_display_name_cache)
+ end
+
+ response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
+
+ render :text => doc.to_s, :content_type => "text/xml"
projects / rails.git / blobdiff