class GeocoderController < ApplicationController
- require 'uri'
- require 'net/http'
- require 'rexml/document'
+ require "cgi"
+ require "uri"
+ require "rexml/document"
- before_filter :authorize_web
- before_filter :set_locale
+ before_action :authorize_web
+ before_action :set_locale
+ before_action :require_oauth, :only => [:search]
+ authorize_resource :class => false
def search
- @query = params[:query]
- @sources = Array.new
-
- @query.sub(/^\s+/, "")
- @query.sub(/\s+$/, "")
-
- if @query.match(/^[+-]?\d+(\.\d*)?\s*[\s,]\s*[+-]?\d+(\.\d*)?$/)
- @sources.push "latlon"
- elsif @query.match(/^\d{5}(-\d{4})?$/)
- @sources.push "us_postcode"
- @sources.push "osm_nominatim"
- elsif @query.match(/^(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW])\s*[0-9][ABD-HJLNP-UW-Z]{2})$/i)
- @sources.push "uk_postcode"
- @sources.push "osm_nominatim"
- elsif @query.match(/^[A-Z]\d[A-Z]\s*\d[A-Z]\d$/i)
- @sources.push "ca_postcode"
- @sources.push "osm_nominatim"
- else
- @sources.push "osm_nominatim"
- @sources.push "geonames"
+ @params = normalize_params
+ @sources = []
+
+ if @params[:lat] && @params[:lon]
+ @sources.push(:name => "latlon", :url => root_path)
+ @sources.push(:name => "osm_nominatim_reverse", :url => nominatim_reverse_url(:format => "html"))
+ elsif @params[:query]
+ @sources.push(:name => "osm_nominatim", :url => nominatim_url(:format => "html"))
end
- render :update do |page|
- page.replace_html :sidebar_content, :partial => "search"
- page.call "openSidebar"
+ if @sources.empty?
+ head :bad_request
+ else
+ render :layout => map_layout
end
end
def search_latlon
- # get query parameters
- query = params[:query]
+ lat = params[:lat].to_f
+ lon = params[:lon].to_f
- # create result array
- @results = Array.new
+ if params[:latlon_digits]
+ # We've got two nondescript numbers for a query, which can mean both "lat, lon" or "lon, lat".
+ @results = []
- # decode the location
- if m = query.match(/^\s*([+-]?\d+(\.\d*)?)\s*[\s,]\s*([+-]?\d+(\.\d*)?)\s*$/)
- lat = m[1].to_f
- lon = m[3].to_f
- end
+ if lat >= -90 && lat <= 90 && lon >= -180 && lon <= 180
+ @results.push(:lat => params[:lat], :lon => params[:lon],
+ :zoom => params[:zoom],
+ :name => "#{params[:lat]}, #{params[:lon]}")
+ end
+
+ if lon >= -90 && lon <= 90 && lat >= -180 && lat <= 180
+ @results.push(:lat => params[:lon], :lon => params[:lat],
+ :zoom => params[:zoom],
+ :name => "#{params[:lon]}, #{params[:lat]}")
+ 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"
+ if @results.empty?
+ @error = "Latitude or longitude are out of range"
+ render :action => "error"
+ else
+ render :action => "results"
+ end
else
- @results.push({:lat => lat, :lon => lon,
- :zoom => POSTCODE_ZOOM,
- :name => "#{lat}, #{lon}"})
+ # Coordinates in a query have come with markers for latitude and longitude.
+ if lat < -90 || lat > 90
+ @error = "Latitude #{lat} out of range"
+ render :action => "error"
+ elsif lon < -180 || lon > 180
+ @error = "Longitude #{lon} out of range"
+ render :action => "error"
+ else
+ @results = [{ :lat => params[:lat], :lon => params[:lon],
+ :zoom => params[:zoom],
+ :name => "#{params[:lat]}, #{params[:lon]}" }]
- render :action => "results"
+ render :action => "results"
+ end
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_osm_nominatim
+ # ask nominatim
+ response = fetch_xml(nominatim_url(:format => "xml"))
- def search_uk_postcode
- # get query parameters
- query = params[:query]
+ # extract the results from the response
+ results = response.elements["searchresults"]
# create result array
- @results = Array.new
+ @results = []
- # 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)}")
+ # create parameter hash for "more results" link
+ @more_params = params
+ .permit(:query, :minlon, :minlat, :maxlon, :maxlat, :exclude)
+ .merge(:exclude => results.attributes["exclude_place_ids"])
# 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)}")
+ results.elements.each("place") do |place|
+ lat = place.attributes["lat"]
+ lon = place.attributes["lon"]
+ klass = place.attributes["class"]
+ type = place.attributes["type"]
+ name = place.attributes["display_name"]
+ min_lat, max_lat, min_lon, max_lon = place.attributes["boundingbox"].split(",")
+ prefix_name = if type.empty?
+ ""
+ else
+ t "geocoder.search_osm_nominatim.prefix.#{klass}.#{type}", :default => type.tr("_", " ").capitalize
+ end
+ if klass == "boundary" && type == "administrative"
+ rank = (place.attributes["address_rank"].to_i + 1) / 2
+ prefix_name = t "geocoder.search_osm_nominatim.admin_levels.level#{rank}", :default => prefix_name
+ place.elements["extratags"].elements.each("tag") do |extratag|
+ prefix_name = t "geocoder.search_osm_nominatim.prefix.place.#{extratag.attributes['value']}", :default => prefix_name if extratag.attributes["key"] == "linked_place" || extratag.attributes["key"] == "place"
+ end
+ end
+ prefix = t ".prefix_format", :name => prefix_name
+ object_type = place.attributes["osm_type"]
+ object_id = place.attributes["osm_id"]
- # 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})
+ @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)
end
render :action => "results"
- rescue Exception => ex
- @error = "Error contacting geocoder.ca: #{ex.to_s}"
+ rescue StandardError => e
+ host = URI(Settings.nominatim_url).host
+ @error = "Error contacting #{host}: #{e}"
render :action => "error"
end
- def search_osm_namefinder
+ def search_osm_nominatim_reverse
# get query parameters
- query = params[:query]
+ zoom = params[:zoom]
# create result array
- @results = Array.new
+ @results = []
- # ask OSM namefinder
- response = fetch_xml("http://gazetteer.openstreetmap.org/namefinder/search.xml?find=#{escape_query(query)}")
+ # ask nominatim
+ response = fetch_xml(nominatim_reverse_url(:format => "xml"))
# 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
- end
-
- if parent
- parentname = format_name(parent.attributes["name"].to_s)
-
- if place.attributes["info"].to_s == "suburb"
- suffix = t "geocoder.search_osm_namefinder.suffix_suburb", :suffix => suffix, :parentname => parentname
- else
- parentdistance = format_distance(parent.attributes["approxdistance"].to_i)
- parentdirection = format_direction(parent.attributes["direction"].to_i)
- suffix = t "geocoder.search_osm_namefinder.suffix_parent", :suffix => suffix, :parentdistance => parentdistance, :parentdirection => parentdirection, :parentname => parentname
- end
- end
- end
- else
- suffix = ""
- end
+ response.elements.each("reversegeocode/result") do |result|
+ lat = result.attributes["lat"]
+ lon = result.attributes["lon"]
+ object_type = result.attributes["osm_type"]
+ object_id = result.attributes["osm_id"]
+ description = result.text
- @results.push({:lat => lat, :lon => lon, :zoom => zoom,
- :prefix => prefix, :name => name, :suffix => suffix,
- :description => description})
+ @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 gazetteer.openstreetmap.org: #{ex.to_s}"
+ rescue StandardError => e
+ host = URI(Settings.nominatim_url).host
+ @error = "Error contacting #{host}: #{e}"
render :action => "error"
end
- def search_osm_nominatim
+ private
+
+ def nominatim_url(format: nil)
# get query parameters
query = params[:query]
minlon = params[:minlon]
maxlat = params[:maxlat]
# get view box
- if minlon && minlat && maxlon && maxlat
- viewbox = "&viewbox=#{minlon},#{maxlat},#{maxlon},#{minlat}"
- end
+ viewbox = "&viewbox=#{minlon},#{maxlat},#{maxlon},#{minlat}" if minlon && minlat && maxlon && maxlat
# get objects to excude
- if params[:exclude]
- exclude = "&exclude_place_ids=#{params[:exclude].join(',')}"
- end
-
- # ask nominatim
- response = fetch_xml("#{NOMINATIM_URL}search?format=xml&q=#{escape_query(query)}#{viewbox}#{exclude}&accept-language=#{request.user_preferred_languages.join(',')}")
+ exclude = "&exclude_place_ids=#{params[:exclude]}" if params[:exclude]
- # 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
- prefix = t "geocoder.search_osm_nominatim.prefix_format", :name => prefix_name
-
- @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})
- @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://ws.geonames.org/search?q=#{escape_query(query)}&maxRows=20")
-
- # 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
-
- render :action => "results"
- rescue Exception => ex
- @error = "Error contacting ws.geonames.org: #{ex.to_s}"
- render :action => "error"
- end
-
- def description
- @sources = Array.new
-
- @sources.push({ :name => "osm_nominatim" })
- @sources.push({ :name => "geonames" })
-
- render :update do |page|
- page.replace_html :sidebar_content, :partial => "description"
- page.call "openSidebar"
- end
- end
-
- def description_osm_namefinder
- # get query parameters
- lat = params[:lat]
- lon = params[:lon]
- types = params[:types]
- max = params[:max]
-
- # create result array
- @results = Array.new
-
- # ask OSM namefinder
- response = fetch_xml("http://gazetteer.openstreetmap.org/namefinder/search.xml?find=#{types}+near+#{lat},#{lon}&max=#{max}")
-
- # 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
- name = named.attributes["name"].to_s
- description = named.elements["description"].to_s
- distance = format_distance(place.attributes["approxdistance"].to_i)
- direction = format_direction((place.attributes["direction"].to_i - 180) % 360)
- prefix = t "geocoder.description_osm_namefinder.prefix", :distance => distance, :direction => direction, :type => type
- @results.push({:lat => lat, :lon => lon, :zoom => zoom,
- :prefix => prefix.capitalize, :name => name,
- :description => description})
- end
-
- render :action => "results"
- rescue Exception => ex
- @error = "Error contacting gazetteer.openstreetmap.org: #{ex.to_s}"
- render :action => "error"
+ # build url
+ "#{Settings.nominatim_url}search?format=#{format}&extratags=1&q=#{escape_query(query)}#{viewbox}#{exclude}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}"
end
- def description_osm_nominatim
+ def nominatim_reverse_url(format: nil)
# get query parameters
lat = params[:lat]
lon = params[:lon]
zoom = params[:zoom]
- # create result array
- @results = Array.new
-
- # ask OSM namefinder
- response = fetch_xml("#{NOMINATIM_URL}reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{request.user_preferred_languages.join(',')}")
+ # build url
+ "#{Settings.nominatim_url}reverse?format=#{format}&lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}"
+ end
- # parse the response
- response.elements.each("reversegeocode/result") do |result|
- description = result.get_text.to_s
+ def fetch_text(url)
+ response = OSM.http_client.get(URI.parse(url))
- @results.push({:prefix => "#{description}"})
+ if response.success?
+ response.body
+ else
+ raise response.status.to_s
end
-
- render :action => "results"
- rescue Exception => ex
- @error = "Error contacting nominatim.openstreetmap.org: #{ex.to_s}"
- render :action => "error"
end
- def description_geonames
- # 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({:prefix => "#{name}, #{country}"})
- end
+ def fetch_xml(url)
+ REXML::Document.new(fetch_text(url))
+ end
- render :action => "results"
- rescue Exception => ex
- @error = "Error contacting ws.geonames.org: #{ex.to_s}"
- render :action => "error"
+ def escape_query(query)
+ CGI.escape(query)
end
-private
+ def normalize_params
+ if query = params[:query]
+ query.strip!
- def fetch_text(url)
- return Net::HTTP.get(URI.parse(url))
- end
+ if latlon = query.match(/^(?<ns>[NS])\s*#{dms_regexp('ns')}\W*(?<ew>[EW])\s*#{dms_regexp('ew')}$/) ||
+ query.match(/^#{dms_regexp('ns')}\s*(?<ns>[NS])\W*#{dms_regexp('ew')}\s*(?<ew>[EW])$/)
+ params.merge!(to_decdeg(latlon.named_captures.compact)).delete(:query)
- def fetch_xml(url)
- return REXML::Document.new(fetch_text(url))
- end
+ elsif latlon = query.match(%r{^(?<lat>[+-]?\d+(?:\.\d+)?)(?:\s+|\s*[,/]\s*)(?<lon>[+-]?\d+(?:\.\d+)?)$})
+ params.merge!(:lat => latlon["lat"], :lon => latlon["lon"]).delete(:query)
- def format_distance(distance)
- return t("geocoder.distance", :count => distance)
- end
+ params[:latlon_digits] = true
+ end
+ 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")
+ params.permit(:query, :lat, :lon, :latlon_digits, :zoom, :minlat, :minlon, :maxlat, :maxlon)
end
- def format_name(name)
- return name.gsub(/( *\[[^\]]*\])*$/, "")
+ def dms_regexp(name_prefix)
+ /
+ (?: (?<#{name_prefix}d>\d{1,3}(?:\.\d+)?)°? ) |
+ (?: (?<#{name_prefix}d>\d{1,3})°?\s*(?<#{name_prefix}m>\d{1,2}(?:\.\d+)?)['′]? ) |
+ (?: (?<#{name_prefix}d>\d{1,3})°?\s*(?<#{name_prefix}m>\d{1,2})['′]?\s*(?<#{name_prefix}s>\d{1,2}(?:\.\d+)?)["″]? )
+ /x
end
- def count_results(results)
- count = 0
+ def to_decdeg(captures)
+ ns = captures.fetch("ns").casecmp?("s") ? -1 : 1
+ nsd = BigDecimal(captures.fetch("nsd", "0"))
+ nsm = BigDecimal(captures.fetch("nsm", "0"))
+ nss = BigDecimal(captures.fetch("nss", "0"))
- results.each do |source|
- count += source[:results].length if source[:results]
- end
+ ew = captures.fetch("ew").casecmp?("w") ? -1 : 1
+ ewd = BigDecimal(captures.fetch("ewd", "0"))
+ ewm = BigDecimal(captures.fetch("ewm", "0"))
+ ews = BigDecimal(captures.fetch("ews", "0"))
- return count
- end
+ lat = ns * (nsd + (nsm / 60) + (nss / 3600))
+ lon = ew * (ewd + (ewm / 60) + (ews / 3600))
- def escape_query(query)
- return URI.escape(query, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]", false, 'N'))
+ { :lat => lat.round(6).to_s("F"), :lon => lon.round(6).to_s("F") }
end
end
projects / rails.git / blobdiff