+ query = params[:query]
+ results = Array.new
+
+ if query.match(/^\d{5}(-\d{4})?$/)
+ results.push search_us_postcode(query)
+ elsif query.match(/(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW])\s*[0-9][ABD-HJLNP-UW-Z]{2})/i)
+ results.push search_uk_postcode(query)
+ results.push search_osm_namefinder(query)
+ elsif query.match(/[A-Z]\d[A-Z]\s*\d[A-Z]\d/i)
+ results.push search_ca_postcode(query)
+ else
+ results.push search_osm_namefinder(query)
+ results.push search_geonames(query)
+ end
+
+ results_count = count_results(results)
+
+ render :update do |page|
+ page.replace_html :sidebar_content, :partial => 'results', :object => results
+
+ if results_count == 1
+ position = results.collect { |s| s[:results] }.compact.flatten[0]
+ page.call "setPosition", position[:lat], position[:lon], position[:zoom]
+ else
+ page.call "openSidebar"
+ end
+ end
+ end
+
+ def description
+ results = Array.new
+
+ lat = params[:lat]
+ lon = params[:lon]
+
+ results.push description_osm_namefinder("cities", lat, lon, 2)
+ results.push description_osm_namefinder("towns", lat, lon, 4)
+ results.push description_osm_namefinder("places", lat, lon, 10)
+ results.push description_geonames(lat, lon)
+
+ render :update do |page|
+ page.replace_html :sidebar_content, :partial => 'results', :object => results
+ page.call "openSidebar"
+ end
+ end
+
+private
+
+ def search_us_postcode(query)
+ results = Array.new
+
+ # ask geocoder.us (they have a non-commercial use api)
+ response = fetch_text("http://rpc.geocoder.us/service/csv?zip=#{escape_query(query)}")
+
+ # parse the response
+ unless response.match(/couldn't find this zip/)
+ data = response.split(/\s*,\s+/) # lat,long,town,state,zip
+ results.push({:lat => data[0], :lon => data[1], :zoom => POSTCODE_ZOOM,
+ :prefix => "#{data[2]}, #{data[3]}, ",
+ :name => data[4]})
+ end
+
+ return { :source => "Geocoder.us", :url => "http://geocoder.us/", :results => results }
+ rescue Exception => ex
+ return { :source => "Geocoder.us", :url => "http://geocoder.us/", :error => "Error contacting rpc.geocoder.us: #{ex.to_s}" }
+ end
+
+ def search_uk_postcode(query)
+ results = Array.new
+
+ # ask npemap.org.uk to do a combined npemap + freethepostcode search
+ response = fetch_text("http://www.npemap.org.uk/cgi/geocoder.fcgi?format=text&postcode=#{escape_query(query)}")
+
+ # parse the response
+ unless response.match(/Error/)
+ dataline = response.split(/\n/)[1]
+ data = dataline.split(/,/) # easting,northing,postcode,lat,long
+ postcode = data[2].gsub(/'/, "")
+ zoom = POSTCODE_ZOOM - postcode.count("#")
+ results.push({:lat => data[3], :lon => data[4], :zoom => zoom,
+ :name => postcode})
+ end
+
+ return { :source => "NPEMap / FreeThePostcode", :url => "http://www.npemap.org.uk/", :results => results }
+ rescue Exception => ex
+ return { :source => "NPEMap / FreeThePostcode", :url => "http://www.npemap.org.uk/", :error => "Error contacting www.npemap.org.uk: #{ex.to_s}" }
+ end
+
+ def search_ca_postcode(query)
+ results = Array.new
+
+ # ask geocoder.ca (note - they have a per-day limit)
+ response = fetch_xml("http://geocoder.ca/?geoit=XML&postal=#{escape_query(query)}")
+
+ # parse the response
+ if response.get_elements("geodata/error").empty?
+ results.push({:lat => response.get_text("geodata/latt").to_s,
+ :lon => response.get_text("geodata/longt").to_s,
+ :zoom => POSTCODE_ZOOM,
+ :name => query.upcase})
+ end
+
+ return { :source => "Geocoder.CA", :url => "http://geocoder.ca/", :results => results }
+ rescue Exception => ex
+ return { :source => "Geocoder.CA", :url => "http://geocoder.ca/", :error => "Error contacting geocoder.ca: #{ex.to_s}" }
+ end
+
+ def search_osm_namefinder(query)
+ results = Array.new
+
+ # ask OSM namefinder
+ response = fetch_xml("http://gazetteer.openstreetmap.org/namefinder/search.xml?find=#{escape_query(query)}")
+
+ # parse the response
+ response.elements.each("searchresults/named") do |named|
+ lat = named.attributes["lat"].to_s
+ lon = named.attributes["lon"].to_s
+ zoom = named.attributes["zoom"].to_s
+ place = named.elements["place/named"] || named.elements["nearestplaces/named"]
+ type = named.attributes["info"].to_s.capitalize
+ name = named.attributes["name"].to_s
+ description = named.elements["description"].to_s
+
+ if name.empty?
+ prefix = ""
+ name = type
+ else
+ prefix = "#{type} "
+ end
+
+ if place
+ distance = format_distance(place.attributes["approxdistance"].to_i)
+ direction = format_direction(place.attributes["direction"].to_i)
+ placename = format_name(place.attributes["name"].to_s)
+ suffix = ", #{distance} #{direction} of #{placename}"
+
+ if place.attributes["rank"].to_i <= 30
+ parent = nil
+ parentrank = 0
+ parentscore = 0
+
+ place.elements.each("nearestplaces/named") do |nearest|
+ nearestrank = nearest.attributes["rank"].to_i
+ nearestscore = nearestrank / nearest.attributes["distance"].to_f
+
+ if nearestrank > 30 and
+ ( nearestscore > parentscore or
+ ( nearestscore == parentscore and nearestrank > parentrank ) )
+ parent = nearest
+ parentrank = nearestrank
+ parentscore = nearestscore
+ end
projects / rails.git / blobdiff