require 'net/http'
require 'rexml/document'
+ POSTCODE_ZOOM = 15
+ GEONAMES_ZOOM = 12
+
def search
query = params[:query]
results = Array.new
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.replace_html :search_results_content, :partial => 'results', :object => results
- page.call "openSearchResults"
+ 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
results = Array.new
# ask geocoder.us (they have a non-commercial use api)
- response = fetch_text("http://rpc.geocoder.us/service/csv?zip=#{URI.escape(query)}")
+ 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 => 12,
+ results.push({:lat => data[0], :lon => data[1], :zoom => POSTCODE_ZOOM,
:prefix => "#{data[2]}, #{data[3]}, ",
:name => data[4]})
end
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=#{URI.escape(query)}")
+ 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
- results.push({:lat => data[3], :lon => data[4], :zoom => 12,
+ results.push({:lat => data[3], :lon => data[4], :zoom => POSTCODE_ZOOM,
:name => data[2].gsub(/'/, "")})
end
results = Array.new
# ask geocoder.ca (note - they have a per-day limit)
- response = fetch_xml("http://geocoder.ca/?geoit=XML&postal=#{URI.escape(query)}")
+ response = fetch_xml("http://geocoder.ca/?geoit=XML&postal=#{escape_query(query)}")
# parse the response
unless response.get_elements("geodata/error")
results.push({:lat => response.get_text("geodata/latt").to_s,
:lon => response.get_text("geodata/longt").to_s,
- :zoom => 12,
+ :zoom => POSTCODE_ZOOM,
:name => query.upcase})
end
results = Array.new
# ask OSM namefinder
- response = fetch_xml("http://www.frankieandshadow.com/osm/search.xml?find=#{URI.escape(query)}")
+ response = fetch_xml("http://www.frankieandshadow.com/osm/search.xml?find=#{escape_query(query)}")
# parse the response
response.elements.each("searchresults/named") do |named|
results = Array.new
# ask geonames.org
- response = fetch_xml("http://ws.geonames.org/search?q=#{URI.escape(query)}&maxRows=20")
+ response = fetch_xml("http://ws.geonames.org/search?q=#{escape_query(query)}&maxRows=20")
# parse the response
response.elements.each("geonames/geoname") do |geoname|
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 => 12,
+ results.push({:lat => lat, :lon => lon, :zoom => GEONAMES_ZOOM,
:name => name,
:suffix => ", #{country}"})
end
return { :source => "GeoNames", :url => "http://www.geonames.org/", :error => "Error contacting ws.geonames.org: #{ex.to_s}" }
end
+ def description_osm_namefinder(types, lat, lon, max)
+ results = Array.new
+
+ # ask OSM namefinder
+ response = fetch_xml("http://www.frankieandshadow.com/osm/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 = "#{distance} #{direction} of #{type} "
+ results.push({:lat => lat, :lon => lon, :zoom => zoom,
+ :prefix => prefix.capitalize, :name => name,
+ :description => description})
+ end
+
+ return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :results => results }
+ rescue Exception => ex
+ return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :error => "Error contacting www.frankieandshadow.com: #{ex.to_s}" }
+ end
+
+ def description_geonames(lat, lon)
+ 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
+
+ return { :type => "Location", :source => "GeoNames", :url => "http://www.geonames.org/", :results => results }
+ rescue Exception => ex
+ return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :error => "Error contacting www.frankieandshadow.com: #{ex.to_s}" }
+ end
+
def fetch_text(url)
return Net::HTTP.get(URI.parse(url))
end
return count
end
+
+ def escape_query(query)
+ return URI.escape(query, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]", false, 'N'))
+ end
end
projects / rails.git / blobdiff