- begin
- if postcode.match(/(^\d{5}$)|(^\d{5}-\d{4}$)/)
- # Its a zip code - ask geocoder.us
- # (They have a non commerical use api)
- Net::HTTP.start('rpc.geocoder.us') do |http|
- resp = http.get("/service/csv?zip=#{postcode}")
- if resp.body.match(/couldn't find this zip/)
- redirect_to "/index.html?error=invalid_zip_code"
- return
- end
- data = resp.body.split(/, /) # lat,long,town,state,zip
- lat = data[0]
- lon = data[1]
- redirect_to "/index.html?mlat=#{lat}&mlon=#{lon}&zoom=14"
- return
- end
- elsif postcode.match(/^([A-Z]{1,2}\d+[A-Z]?\s*\d[A-Z]{2})/)
- # It matched our naive UK postcode regexp
- # Ask npemap to do a combined npemap + freethepostcode search
- Net::HTTP.start('www.npemap.org.uk') do |http|
- resp = http.get("/cgi/geocoder.fcgi?format=text&postcode=#{escaped_postcode}")
- dataline = resp.body.split(/\n/)[1]
- data = dataline.split(/,/) # easting,northing,postcode,lat,long
- lat = data[3]
- lon = data[4]
- redirect_to "/index.html?mlat=#{lat}&mlon=#{lon}&zoom=14"
- return
- end
- elsif postcode.match(/^[A-Z]\d[A-Z]\s*\d[A-Z]\d/)
- # It's a canadian postcode
- # Ask geocoder.ca (note - they have a per-day limit)
- postcode = postcode.sub(/\s/,'')
- Net::HTTP.start('geocoder.ca') do |http|
- resp = http.get("?geoit=XML&postal=#{postcode}")
- data_lat = resp.body.slice(/latt>.*?</)
- data_lon = resp.body.slice(/longt>.*?</)
- lat = data_lat.split(/[<>]/)[1]
- lon = data_lon.split(/[<>]/)[1]
- redirect_to "/index.html?mlat=#{lat}&mlon=#{lon}&zoom=14"
- return
- end
- elsif postcode.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]) [0-9][ABD-HJLNP-UW-Z]{2})
- /)
- #its a UK postcode
- begin
- Net::HTTP.start('www.freethepostcode.org') do |http|
- resp = http.get("/geocode?postcode=#{postcode}")
- lat = resp.body.scan(/[4-6][0-9]\.?[0-9]+/)
- lon = resp.body.scan(/[-+][0-9]\.?[0-9]+/)
- redirect_to "/index.html?mlat=#{lat}&mlon=#{lon}&zoom=14"
- return
+ # decode the location
+ if m = query.match(/^\s*([+-]?\d+(\.\d*)?)\s*[\s,]\s*([+-]?\d+(\.\d*)?)\s*$/)
+ lat = m[1].to_f
+ lon = m[3].to_f
+ end
+
+ # generate results
+ if lat < -90 or lat > 90
+ @error = "Latitude #{lat} out of range"
+ render :action => "error"
+ elsif lon < -180 or lon > 180
+ @error = "Longitude #{lon} out of range"
+ render :action => "error"
+ else
+ @results.push({:lat => lat, :lon => lon,
+ :zoom => POSTCODE_ZOOM,
+ :name => "#{lat}, #{lon}"})
+
+ render :action => "results"
+ end
+ end
+
+ def search_us_postcode
+ # get query parameters
+ query = params[:query]
+
+ # create result array
+ @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
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting rpc.geocoder.us: #{ex.to_s}"
+ render :action => "error"
+ end
+
+ def search_uk_postcode
+ # get query parameters
+ query = params[:query]
+
+ # create result array
+ @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
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting www.npemap.org.uk: #{ex.to_s}"
+ render :action => "error"
+ end
+
+ def search_ca_postcode
+ # get query parameters
+ query = params[: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
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting geocoder.ca: #{ex.to_s}"
+ render :action => "error"
+ end
+
+ def search_osm_namefinder
+ # get query parameters
+ query = params[:query]
+
+ # create result array
+ @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 = t "geocoder.search_osm_namefinder.prefix", :type => 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 = t "geocoder.search_osm_namefinder.suffix_place", :distance => distance, :direction => direction, :placename => 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