-class GeocoderController < ApplicationController
- layout 'site'
+# coding: utf-8
+class GeocoderController < ApplicationController
+ require 'uri'
require 'net/http'
require 'rexml/document'
+ before_filter :authorize_web
+ before_filter :set_locale
+
def search
+ normalize_params
- if params[:postcode]
- unless params[:postcode].empty?
- postcode = params[:postcode]
- check_postcode(postcode)
- return
- end
+ @sources = []
+ if params[:lat] && params[:lon]
+ @sources.push "latlon"
+ @sources.push "osm_nominatim_reverse"
+ @sources.push "geonames_reverse"
+ elsif params[:query].match(/^\d{5}(-\d{4})?$/)
+ @sources.push "us_postcode"
+ @sources.push "osm_nominatim"
+ elsif params[:query].match(/^(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW])\s*[0-9][ABD-HJLNP-UW-Z]{2})$/i)
+ @sources.push "uk_postcode"
+ @sources.push "osm_nominatim"
+ elsif params[:query].match(/^[A-Z]\d[A-Z]\s*\d[A-Z]\d$/i)
+ @sources.push "ca_postcode"
+ @sources.push "osm_nominatim"
+ else
+ @sources.push "osm_nominatim"
+ @sources.push "geonames" if defined?(GEONAMES_USERNAME)
+ end
+ end
+
+ def search_latlon
+ lat = params[:lat].to_f
+ lon = params[:lon].to_f
+ 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 = [{:lat => lat, :lon => lon,
+ :zoom => params[: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_nominatim
+ # get query parameters
+ query = params[:query]
+ minlon = params[:minlon]
+ minlat = params[:minlat]
+ maxlon = params[:maxlon]
+ maxlat = params[:maxlat]
+
+ # get view box
+ if minlon && minlat && maxlon && maxlat
+ viewbox = "&viewbox=#{minlon},#{maxlat},#{maxlon},#{minlat}"
+ end
+
+ # get objects to excude
+ if params[:exclude]
+ exclude = "&exclude_place_ids=#{params[:exclude].join(',')}"
end
- if params[:query][:postcode]
- unless params[:query][:postcode].empty?
- postcode =params[:query][:postcode]
- check_postcode(postcode)
- return
+
+ # ask nominatim
+ response = fetch_xml("#{NOMINATIM_URL}search?format=xml&q=#{escape_query(query)}#{viewbox}#{exclude}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}")
+
+ # create result array
+ @results = Array.new
+
+ # create parameter hash for "more results" link
+ @more_params = params.reverse_merge({ :exclude => [] })
+
+ # extract the results from the response
+ results = response.elements["searchresults"]
+
+ # parse the response
+ results.elements.each("place") do |place|
+ lat = place.attributes["lat"].to_s
+ lon = place.attributes["lon"].to_s
+ klass = place.attributes["class"].to_s
+ type = place.attributes["type"].to_s
+ name = place.attributes["display_name"].to_s
+ min_lat,max_lat,min_lon,max_lon = place.attributes["boundingbox"].to_s.split(",")
+ prefix_name = t "geocoder.search_osm_nominatim.prefix.#{klass}.#{type}", :default => type.gsub("_", " ").capitalize
+ if klass == 'boundary' and type == 'administrative'
+ rank = (place.attributes["place_rank"].to_i + 1) / 2
+ prefix_name = t "geocoder.search_osm_nominatim.admin_levels.level#{rank}", :default => prefix_name
end
+ prefix = t "geocoder.search_osm_nominatim.prefix_format", :name => prefix_name
+ object_type = place.attributes["osm_type"]
+ object_id = place.attributes["osm_id"]
+
+ @results.push({:lat => lat, :lon => lon,
+ :min_lat => min_lat, :max_lat => max_lat,
+ :min_lon => min_lon, :max_lon => max_lon,
+ :prefix => prefix, :name => name,
+ :type => object_type, :id => object_id})
+ @more_params[:exclude].push(place.attributes["place_id"].to_s)
+ end
+
+ render :action => "results"
+# rescue Exception => ex
+# @error = "Error contacting nominatim.openstreetmap.org: #{ex.to_s}"
+# render :action => "error"
+ end
+
+ def search_geonames
+ # get query parameters
+ query = params[:query]
+
+ # create result array
+ @results = Array.new
+
+ # ask geonames.org
+ response = fetch_xml("http://api.geonames.org/search?q=#{escape_query(query)}&maxRows=20&username=#{GEONAMES_USERNAME}")
+
+ # parse the response
+ response.elements.each("geonames/geoname") do |geoname|
+ lat = geoname.get_text("lat").to_s
+ lon = geoname.get_text("lng").to_s
+ name = geoname.get_text("name").to_s
+ country = geoname.get_text("countryName").to_s
+ @results.push({:lat => lat, :lon => lon,
+ :zoom => GEONAMES_ZOOM,
+ :name => name,
+ :suffix => ", #{country}"})
end
- if params[:query][:place_name]
- @place_name = params[:query][:place_name]
- redirect_to :controller => 'geocoder', :action => 'results', :params => {:place_name => @place_name}
- end
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting ws.geonames.org: #{ex.to_s}"
+ render :action => "error"
end
- def check_postcode(p)
+ def search_osm_nominatim_reverse
+ # get query parameters
+ lat = params[:lat]
+ lon = params[:lon]
+ zoom = params[:zoom]
- @postcode_arr = []
- postcode = p.upcase
- escaped_postcode = postcode.sub(/\s/,'%20')
+ # create result array
+ @results = Array.new
+ # ask nominatim
+ response = fetch_xml("#{NOMINATIM_URL}reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}")
+
+ # parse the response
+ response.elements.each("reversegeocode/result") do |result|
+ lat = result.attributes["lat"].to_s
+ lon = result.attributes["lon"].to_s
+ object_type = result.attributes["osm_type"]
+ object_id = result.attributes["osm_id"]
+ description = result.get_text.to_s
+
+ @results.push({:lat => lat, :lon => lon,
+ :zoom => zoom,
+ :name => description,
+ :type => object_type, :id => object_id})
+ end
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting nominatim.openstreetmap.org: #{ex.to_s}"
+ render :action => "error"
+ end
+
+ def search_geonames_reverse
+ # get query parameters
+ lat = params[:lat]
+ lon = params[:lon]
+
+ # create result array
+ @results = Array.new
+
+ # ask geonames.org
+ response = fetch_xml("http://ws.geonames.org/countrySubdivision?lat=#{lat}&lng=#{lon}")
+
+ # parse the response
+ response.elements.each("geonames/countrySubdivision") do |geoname|
+ name = geoname.get_text("adminName1").to_s
+ country = geoname.get_text("countryName").to_s
+ @results.push({:lat => lat, :lon => lon,
+ :zoom => GEONAMES_ZOOM,
+ :name => name,
+ :suffix => ", #{country}"})
+ end
+
+ render :action => "results"
+ rescue Exception => ex
+ @error = "Error contacting ws.geonames.org: #{ex.to_s}"
+ render :action => "error"
+ end
+
+private
+
+ def fetch_text(url)
+ return Net::HTTP.get(URI.parse(url))
+ end
+
+ def fetch_xml(url)
+ return REXML::Document.new(fetch_text(url))
+ end
+
+ def format_distance(distance)
+ return t("geocoder.distance", :count => distance)
+ end
+
+ def format_direction(bearing)
+ return t("geocoder.direction.south_west") if bearing >= 22.5 and bearing < 67.5
+ return t("geocoder.direction.south") if bearing >= 67.5 and bearing < 112.5
+ return t("geocoder.direction.south_east") if bearing >= 112.5 and bearing < 157.5
+ return t("geocoder.direction.east") if bearing >= 157.5 and bearing < 202.5
+ return t("geocoder.direction.north_east") if bearing >= 202.5 and bearing < 247.5
+ return t("geocoder.direction.north") if bearing >= 247.5 and bearing < 292.5
+ return t("geocoder.direction.north_west") if bearing >= 292.5 and bearing < 337.5
+ return t("geocoder.direction.west")
+ end
+
+ def format_name(name)
+ return name.gsub(/( *\[[^\]]*\])*$/, "")
+ end
+
+ def count_results(results)
+ count = 0
+
+ results.each do |source|
+ count += source[:results].length if source[:results]
+ end
+
+ return count
+ end
+
+ def escape_query(query)
+ return URI.escape(query, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]", false, 'N'))
+ end
+
+ def normalize_params
+ query = params[:query]
+ return unless query
+
+ query.strip!
+
+ if latlon = query.match(/^([NS])\s*(\d{1,3}(\.\d*)?)\W*([EW])\s*(\d{1,3}(\.\d*)?)$/).try(:captures) # [NSEW] decimal degrees
+ params.merge!(nsew_to_decdeg(latlon)).delete(:query)
+ elsif latlon = query.match(/^(\d{1,3}(\.\d*)?)\s*([NS])\W*(\d{1,3}(\.\d*)?)\s*([EW])$/).try(:captures) # decimal degrees [NSEW]
+ params.merge!(nsew_to_decdeg(latlon)).delete(:query)
+
+ elsif latlon = query.match(/^([NS])\s*(\d{1,3})°?\s*(\d{1,3}(\.\d*)?)?['′]?\W*([EW])\s*(\d{1,3})°?\s*(\d{1,3}(\.\d*)?)?['′]?$/).try(:captures) # [NSEW] degrees, decimal minutes
+ params.merge!(ddm_to_decdeg(latlon)).delete(:query)
+ elsif latlon = query.match(/^(\d{1,3})°?\s*(\d{1,3}(\.\d*)?)?['′]?\s*([NS])\W*(\d{1,3})°?\s*(\d{1,3}(\.\d*)?)?['′]?\s*([EW])$/).try(:captures) # degrees, decimal minutes [NSEW]
+ params.merge!(ddm_to_decdeg(latlon)).delete(:query)
+
+ elsif latlon = query.match(/^([NS])\s*(\d{1,3})°?\s*(\d{1,2})['′]?\s*(\d{1,3}(\.\d*)?)?["″]?\W*([EW])\s*(\d{1,3})°?\s*(\d{1,2})['′]?\s*(\d{1,3}(\.\d*)?)?["″]?$/).try(:captures) # [NSEW] degrees, minutes, decimal seconds
+ params.merge!(dms_to_decdeg(latlon)).delete(:query)
+ elsif latlon = query.match(/^(\d{1,3})°?\s*(\d{1,2})['′]?\s*(\d{1,3}(\.\d*)?)?["″]\s*([NS])\W*(\d{1,3})°?\s*(\d{1,2})['′]?\s*(\d{1,3}(\.\d*)?)?["″]?\s*([EW])$/).try(:captures) # degrees, minutes, decimal seconds [NSEW]
+ params.merge!(dms_to_decdeg(latlon)).delete(:query)
+
+ elsif latlon = query.match(/^\s*([+-]?\d+(\.\d*)?)\s*[\s,]\s*([+-]?\d+(\.\d*)?)\s*$/)
+ params.merge!({:lat => latlon[1].to_f, :lon => latlon[3].to_f}).delete(:query)
+ end
+ end
+
+ def nsew_to_decdeg(captures)
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 :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_zip_code"
- return
- end
- data = resp.body.split(/, /) # lat,long,town,state,zip
- lat = data[0]
- lon = data[1]
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :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 :controller => params[:next_controller], :action => params[:next_action], :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 :controller => params[:next_controller], :action => params[:next_action], :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 :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
- return
- end
- rescue
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode"
- #redirect to somewhere else
- end
- elsif
- # Some other postcode / zip code
- # Throw it at geonames, and see if they have any luck with it
- Net::HTTP.start('ws.geonames.org') do |http|
- resp = http.get("/postalCodeSearch?postalcode=#{escaped_postcode}&maxRows=1")
- hits = resp.body.slice(/totalResultsCount>.*?</).split(/[<>]/)[1]
- if hits == "0"
- # Geonames doesn't know, it's probably wrong
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode_or_zip"
- return
- end
- data_lat = resp.body.slice(/lat>.*?</)
- data_lon = resp.body.slice(/lng>.*?</)
- lat = data_lat.split(/[<>]/)[1]
- lon = data_lon.split(/[<>]/)[1]
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
- end
- else
- # Some other postcode / zip file
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode_or_zip"
- return
- end
+ Float(captures[0])
+ captures[2].downcase != 's' ? lat = captures[0].to_f : lat = -(captures[0].to_f)
+ captures[5].downcase != 'w' ? lon = captures[3].to_f : lon = -(captures[3].to_f)
rescue
- #Its likely that an api is down
- redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "api_down"
+ captures[0].downcase != 's' ? lat = captures[1].to_f : lat = -(captures[1].to_f)
+ captures[3].downcase != 'w' ? lon = captures[4].to_f : lon = -(captures[4].to_f)
end
+ {:lat => lat, :lon => lon}
end
- def results
- @place_name = params[:place_name]
- res_hash = {}
- @res_ary = []
+ def ddm_to_decdeg(captures)
begin
- Net::HTTP.start('ws.geonames.org') do |http|
- res = http.get("/search?q=#{@place_name}&maxRows=10")
- xml = REXML::Document.new(res.body)
- xml.elements.each("geonames/geoname") do |ele|
- res_hash = {}
- ele.elements.each("name"){ |n| res_hash['name'] = n.text }
- ele.elements.each("countryCode"){ |n| res_hash['countrycode'] = n.text }
- ele.elements.each("countryName"){ |n| res_hash['countryname'] = n.text }
- ele.elements.each("lat"){ |n| res_hash['lat'] = n.text }
- ele.elements.each("lng"){ |n| res_hash['lon']= n.text }
- @res_ary << res_hash
- end
- end
+ Float(captures[0])
+ captures[3].downcase != 's' ? lat = captures[0].to_f + captures[1].to_f/60 : lat = -(captures[0].to_f + captures[1].to_f/60)
+ captures[7].downcase != 'w' ? lon = captures[4].to_f + captures[5].to_f/60 : lon = -(captures[4].to_f + captures[5].to_f/60)
rescue
- #Flash a notice to say that geonames is broken
- redirect_to "/index.html"
+ captures[0].downcase != 's' ? lat = captures[1].to_f + captures[2].to_f/60 : lat = -(captures[1].to_f + captures[2].to_f/60)
+ captures[4].downcase != 'w' ? lon = captures[5].to_f + captures[6].to_f/60 : lon = -(captures[5].to_f + captures[6].to_f/60)
end
+ {:lat => lat, :lon => lon}
end
+
+ def dms_to_decdeg(captures)
+ begin
+ Float(captures[0])
+ captures[4].downcase != 's' ? lat = captures[0].to_f + (captures[1].to_f + captures[2].to_f/60)/60 : lat = -(captures[0].to_f + (captures[1].to_f + captures[2].to_f/60)/60)
+ captures[9].downcase != 'w' ? lon = captures[5].to_f + (captures[6].to_f + captures[7].to_f/60)/60 : lon = -(captures[5].to_f + (captures[6].to_f + captures[7].to_f/60)/60)
+ rescue
+ captures[0].downcase != 's' ? lat = captures[1].to_f + (captures[2].to_f + captures[3].to_f/60)/60 : lat = -(captures[1].to_f + (captures[2].to_f + captures[3].to_f/60)/60)
+ captures[5].downcase != 'w' ? lon = captures[6].to_f + (captures[7].to_f + captures[8].to_f/60)/60 : lon = -(captures[6].to_f + (captures[7].to_f + captures[8].to_f/60)/60)
+ end
+ {:lat => lat, :lon => lon}
+ end
+
end
projects / rails.git / blobdiff