QuadTile infrastructure.

[rails.git] / lib / osm.rb

diff --git a/lib/osm.rb b/lib/osm.rb
index 77b07ce3d53bd2b038bdae1eb736916b0e4c0c80..e5d3c7fbb6b653172cf804bbe744be8021b39e52 100644 (file)
--- a/lib/osm.rb
+++ b/lib/osm.rb
@@ -5,13 +5,14 @@ module OSM
   #
   # This would print every latitude value:
   #
-  # gpx = OSM:GPXImporter.new('somefile.gpx')
+  # gpx = OSM::GPXImporter.new('somefile.gpx')
   # gpx.points {|p| puts p['latitude']}
 
   require 'time'
   require 'rexml/parsers/sax2parser'
   require 'rexml/text'
   require 'xml/libxml'
+  require 'digest/md5'
   require 'RMagick'
 
   class Mercator
@@ -295,7 +296,7 @@ module OSM
       image = XML::Node.new 'image'
       @channel << image
       url = XML::Node.new 'url'
-      url << 'http://www.openstreetmap.org/feeds/mag_map-rss2.0.png'
+      url << 'http://www.openstreetmap.org/images/mag_map-rss2.0.png'
       image << url
       title = XML::Node.new 'title'
       title << "OpenStreetMap"
@@ -311,7 +312,7 @@ module OSM
       image << link
     end
 
-    def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=DateTime.now)
+    def add(latitude=0, longitude=0, title_text='dummy title', author_text='anonymous', url='http://www.example.com/', description_text='dummy description', timestamp=DateTime.now)
       item = XML::Node.new 'item'
 
       title = XML::Node.new 'title'
@@ -329,6 +330,10 @@ module OSM
       description << description_text
       item << description
 
+      author = XML::Node.new 'author'
+      author << author_text
+      item << author
+
       pubDate = XML::Node.new 'pubDate'
       pubDate << timestamp.to_s(:rfc822)
       item << pubDate
@@ -364,4 +369,56 @@ module OSM
       return doc
     end
   end
+
+  def self.IPLocation(ip_address)
+    Timeout::timeout(4) do
+      Net::HTTP.start('api.hostip.info') do |http|
+        country = http.get("/country.php?ip=#{ip_address}").body
+        country = "GB" if country = "UK"
+        Net::HTTP.start('ws.geonames.org') do |http|
+          xml = REXML::Document.new(http.get("/countryInfo?country=#{country}").body)
+          xml.elements.each("geonames/country") do |ele|
+            minlon = ele.get_text("bBoxWest").to_s
+            minlat = ele.get_text("bBoxSouth").to_s
+            maxlon = ele.get_text("bBoxEast").to_s
+            maxlat = ele.get_text("bBoxNorth").to_s
+            return { :minlon => minlon, :minlat => minlat, :maxlon => maxlon, :maxlat => maxlat }
+          end
+        end
+      end
+    end
+
+    return nil
+  rescue Exception
+    return nil
+  end
+
+  # Construct a random token of a given length
+  def self.make_token(length = 30)
+    chars = 'abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+    token = ''
+
+    length.times do
+      token += chars[(rand * chars.length).to_i].chr
+    end
+
+    return token
+  end
+
+  # Return an encrypted version of a password
+  def self.encrypt_password(password, salt)
+    return Digest::MD5.hexdigest(password) if salt.nil?
+    return Digest::MD5.hexdigest(salt + password)
+  end
+
+  # Return an SQL fragment to select a given area of the globe
+  def self.sql_for_area(minlat, minlon, maxlat, maxlon)
+    tilesql = QuadTile.sql_for_area(minlat, minlon, maxlat, maxlon)
+    minlat = (minlat * 1000000).round
+    minlon = (minlon * 1000000).round
+    maxlat = (maxlat * 1000000).round
+    maxlon = (maxlon * 1000000).round
+
+    return "#{tilesql} AND latitude BETWEEN #{minlat} AND #{maxlat} AND longitude BETWEEN #{minlon} AND #{maxlon}"
+  end
 end