-# coding: utf-8
-
class GeocoderController < ApplicationController
require "cgi"
require "uri"
before_action :authorize_web
before_action :set_locale
before_action :require_oauth, :only => [:search]
+ authorize_resource :class => false
def search
- normalize_params
-
+ @params = normalize_params
@sources = []
- if params[:lat] && params[:lon]
- @sources.push "latlon"
- @sources.push "osm_nominatim_reverse"
- @sources.push "geonames_reverse" if defined?(GEONAMES_USERNAME)
- elsif params[:query]
- if params[:query] =~ /^\d{5}(-\d{4})?$/
- @sources.push "us_postcode"
- @sources.push "osm_nominatim"
- elsif params[:query] =~ /^(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW])\s*[0-9][ABD-HJLNP-UW-Z]{2})$/i
- @sources.push "uk_postcode"
- @sources.push "osm_nominatim"
- elsif params[:query] =~ /^[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
+ 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
if @sources.empty?
- render :text => "", :status => :bad_request
+ head :bad_request
else
render :layout => map_layout
end
def search_latlon
lat = params[:lat].to_f
lon = params[:lon].to_f
- 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 => 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 = []
-
- # 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 =~ /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 StandardError => ex
- @error = "Error contacting rpc.geocoder.us: #{ex}"
- render :action => "error"
- end
+ if params[:latlon_digits]
+ # We've got two nondescript numbers for a query, which can mean both "lat, lon" or "lon, lat".
+ @results = []
- def search_uk_postcode
- # get query parameters
- query = params[:query]
-
- # create result array
- @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)}")
-
- # parse the response
- unless response =~ /Error/
- dataline = response.split(/\n/)[1]
- data = dataline.split(/,/) # easting,northing,postcode,lat,long
- postcode = data[2].delete("'")
- zoom = POSTCODE_ZOOM - postcode.count("#")
- @results.push(:lat => data[3], :lon => data[4], :zoom => zoom,
- :name => postcode)
- end
-
- render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting www.npemap.org.uk: #{ex}"
- render :action => "error"
- 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
- def search_ca_postcode
- # get query parameters
- query = params[:query]
- @results = []
+ 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
- # ask geocoder.ca (note - they have a per-day limit)
- response = fetch_xml("http://geocoder.ca/?geoit=XML&postal=#{escape_query(query)}")
+ if @results.empty?
+ @error = "Latitude or longitude are out of range"
+ render :action => "error"
+ else
+ render :action => "results"
+ end
+ else
+ # 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]}" }]
- # 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)
+ render :action => "results"
+ end
end
-
- render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting geocoder.ca: #{ex}"
- 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
- exclude = "&exclude_place_ids=#{params[:exclude]}" if params[:exclude]
-
# ask nominatim
- response = fetch_xml("http:#{NOMINATIM_URL}search?format=xml&q=#{escape_query(query)}#{viewbox}#{exclude}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}")
+ response = fetch_xml(nominatim_url(:format => "xml"))
# extract the results from the response
- results = response.elements["searchresults"]
-
- # extract parameters from more_url
- more_url_params = CGI.parse(URI.parse(results.attributes["more_url"]).query)
+ results = response.elements["searchresults"]
# create result array
@results = []
# create parameter hash for "more results" link
- @more_params = params.merge(:exclude => more_url_params["exclude_place_ids"].first)
+ @more_params = params
+ .permit(:query, :minlon, :minlat, :maxlon, :maxlat, :exclude)
+ .merge(:exclude => results.attributes["exclude_place_ids"])
# 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(",")
+ 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["place_rank"].to_i + 1) / 2
+ 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 "geocoder.search_osm_nominatim.prefix_format", :name => prefix_name
+ prefix = t ".prefix_format", :name => prefix_name
object_type = place.attributes["osm_type"]
object_id = place.attributes["osm_id"]
end
render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting nominatim.openstreetmap.org: #{ex}"
- render :action => "error"
- end
-
- def search_geonames
- # get query parameters
- query = params[:query]
-
- # get preferred language
- lang = I18n.locale.to_s.split("-").first
-
- # create result array
- @results = []
-
- # ask geonames.org
- response = fetch_xml("http://api.geonames.org/search?q=#{escape_query(query)}&lang=#{lang}&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
-
- render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting api.geonames.org: #{ex}"
+ rescue StandardError => e
+ host = URI(Settings.nominatim_url).host
+ @error = "Error contacting #{host}: #{e}"
render :action => "error"
end
def search_osm_nominatim_reverse
# get query parameters
- lat = params[:lat]
- lon = params[:lon]
zoom = params[:zoom]
# create result array
@results = []
# ask nominatim
- response = fetch_xml("http:#{NOMINATIM_URL}reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}")
+ response = fetch_xml(nominatim_reverse_url(:format => "xml"))
# parse the response
response.elements.each("reversegeocode/result") do |result|
- lat = result.attributes["lat"].to_s
- lon = result.attributes["lon"].to_s
+ lat = result.attributes["lat"]
+ lon = result.attributes["lon"]
object_type = result.attributes["osm_type"]
object_id = result.attributes["osm_id"]
- description = result.get_text.to_s
+ description = result.text
@results.push(:lat => lat, :lon => lon,
:zoom => zoom,
end
render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting nominatim.openstreetmap.org: #{ex}"
+ rescue StandardError => e
+ host = URI(Settings.nominatim_url).host
+ @error = "Error contacting #{host}: #{e}"
render :action => "error"
end
- def search_geonames_reverse
+ private
+
+ def nominatim_url(format: nil)
# get query parameters
- lat = params[:lat]
- lon = params[:lon]
+ query = params[:query]
+ minlon = params[:minlon]
+ minlat = params[:minlat]
+ maxlon = params[:maxlon]
+ maxlat = params[:maxlat]
- # get preferred language
- lang = I18n.locale.to_s.split("-").first
+ # get view box
+ viewbox = "&viewbox=#{minlon},#{maxlat},#{maxlon},#{minlat}" if minlon && minlat && maxlon && maxlat
- # create result array
- @results = []
+ # get objects to excude
+ exclude = "&exclude_place_ids=#{params[:exclude]}" if params[:exclude]
- # ask geonames.org
- response = fetch_xml("http://api.geonames.org/countrySubdivision?lat=#{lat}&lng=#{lon}&lang=#{lang}&username=#{GEONAMES_USERNAME}")
+ # 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
- # 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
+ def nominatim_reverse_url(format: nil)
+ # get query parameters
+ lat = params[:lat]
+ lon = params[:lon]
+ zoom = params[:zoom]
- render :action => "results"
- rescue StandardError => ex
- @error = "Error contacting api.geonames.org: #{ex}"
- render :action => "error"
+ # build url
+ "#{Settings.nominatim_url}reverse?format=#{format}&lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{http_accept_language.user_preferred_languages.join(',')}"
end
- private
-
def fetch_text(url)
response = OSM.http_client.get(URI.parse(url))
if response.success?
response.body
else
- fail response.status.to_s
+ raise response.status.to_s
end
end
end
def escape_query(query)
- URI.escape(query, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]", false, "N"))
+ CGI.escape(query)
end
def normalize_params
- query = params[:query]
- return unless query
+ if query = params[:query]
+ query.strip!
- query.strip!
+ 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])$/)
+ params.merge!(to_decdeg(latlon.named_captures.compact)).delete(:query)
- if latlon = query.match(/^([NS])\s*(\d{1,3}(\.\d*)?)\W*([EW])\s*(\d{1,3}(\.\d*)?)$/).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])$/).try(:captures) # decimal degrees [NSEW]
- params.merge!(nsew_to_decdeg(latlon)).delete(:query)
+ elsif latlon = query.match(%r{^(?<lat>[+-]?\d+(?:\.\d+)?)(?:\s+|\s*[,/]\s*)(?<lon>[+-]?\d+(?:\.\d+)?)$})
+ params.merge!(:lat => latlon["lat"], :lon => latlon["lon"]).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)
+ params[:latlon_digits] = true
+ end
end
- end
- def nsew_to_decdeg(captures)
- begin
- Float(captures[0])
- lat = captures[2].downcase != "s" ? captures[0].to_f : -captures[0].to_f
- lon = captures[5].downcase != "w" ? captures[3].to_f : -captures[3].to_f
- rescue
- lat = captures[0].downcase != "s" ? captures[1].to_f : -captures[1].to_f
- lon = captures[3].downcase != "w" ? captures[4].to_f : -captures[4].to_f
- end
- { :lat => lat, :lon => lon }
+ params.permit(:query, :lat, :lon, :latlon_digits, :zoom, :minlat, :minlon, :maxlat, :maxlon)
end
- def ddm_to_decdeg(captures)
- begin
- Float(captures[0])
- lat = captures[3].downcase != "s" ? captures[0].to_f + captures[1].to_f / 60 : -(captures[0].to_f + captures[1].to_f / 60)
- lon = captures[7].downcase != "w" ? captures[4].to_f + captures[5].to_f / 60 : -(captures[4].to_f + captures[5].to_f / 60)
- rescue
- lat = captures[0].downcase != "s" ? captures[1].to_f + captures[2].to_f / 60 : -(captures[1].to_f + captures[2].to_f / 60)
- lon = captures[4].downcase != "w" ? captures[5].to_f + captures[6].to_f / 60 : -(captures[5].to_f + captures[6].to_f / 60)
- end
- { :lat => lat, :lon => lon }
+ 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 dms_to_decdeg(captures)
- begin
- Float(captures[0])
- lat = captures[4].downcase != "s" ? captures[0].to_f + (captures[1].to_f + captures[2].to_f / 60) / 60 : -(captures[0].to_f + (captures[1].to_f + captures[2].to_f / 60) / 60)
- lon = captures[9].downcase != "w" ? captures[5].to_f + (captures[6].to_f + captures[7].to_f / 60) / 60 : -(captures[5].to_f + (captures[6].to_f + captures[7].to_f / 60) / 60)
- rescue
- lat = captures[0].downcase != "s" ? captures[1].to_f + (captures[2].to_f + captures[3].to_f / 60) / 60 : -(captures[1].to_f + (captures[2].to_f + captures[3].to_f / 60) / 60)
- lon = captures[5].downcase != "w" ? captures[6].to_f + (captures[7].to_f + captures[8].to_f / 60) / 60 : -(captures[6].to_f + (captures[7].to_f + captures[8].to_f / 60) / 60)
- end
- { :lat => lat, :lon => lon }
+ 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"))
+
+ 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"))
+
+ lat = ns * (nsd + (nsm / 60) + (nss / 3600))
+ lon = ew * (ewd + (ewm / 60) + (ews / 3600))
+
+ { :lat => lat.round(6).to_s("F"), :lon => lon.round(6).to_s("F") }
end
end
projects / rails.git / blobdiff