X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/783528830ad1b0d5f07c8e758747841a0b4e5cc6..369202787bc354fdb69b90cae8ce61322b75195c:/lib/osm.rb

diff --git a/lib/osm.rb b/lib/osm.rb
index 09ded2bd2..789a5f439 100644
--- a/lib/osm.rb
+++ b/lib/osm.rb
@@ -10,36 +10,66 @@ module OSM
 
   # The base class for API Errors.
   class APIError < RuntimeError
-    def render_opts
-      { :text => "", :status => :internal_server_error }
+    def status
+      :internal_server_error
+    end
+
+    def to_s
+      "Generic API Error"
     end
   end
 
   # Raised when an API object is not found.
   class APINotFoundError < APIError
-    def render_opts
-      { :nothing => true, :status => :not_found }
+    def status
+      :not_found
+    end
+
+    def to_s
+      "Object not found"
     end
   end
 
   # Raised when a precondition to an API action fails sanity check.
   class APIPreconditionFailedError < APIError
-    def render_opts
-      { :text => "", :status => :precondition_failed }
+    def initialize(message = "")
+      @message = message
+    end
+
+    def status
+      :precondition_failed    
+    end
+
+    def to_s
+      "Precondition failed: #{@message}"
     end
   end
 
   # Raised when to delete an already-deleted object.
   class APIAlreadyDeletedError < APIError
-    def render_opts
-      { :text => "", :status => :gone }
+    def initialize(object = "object", object_id = "")
+      @object, @object_id = object, object_id
+    end
+    
+    attr_reader :object, :object_id
+
+    def status
+      :gone
+    end
+    
+    def to_s
+      "The #{object} with the id #{object_id} has already been deleted"
     end
   end
 
   # Raised when the user logged in isn't the same as the changeset
   class APIUserChangesetMismatchError < APIError
-    def render_opts
-      { :text => "The user doesn't own that changeset", :status => :conflict }
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The user doesn't own that changeset"
     end
   end
 
@@ -50,16 +80,24 @@ module OSM
     end
 
     attr_reader :changeset
-    
-    def render_opts
-      { :text => "The changeset #{@changeset.id} was closed at #{@changeset.closed_at}.", :status => :conflict }
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The changeset #{@changeset.id} was closed at #{@changeset.closed_at}"
     end
   end
   
   # Raised when a change is expecting a changeset, but the changeset doesn't exist
   class APIChangesetMissingError < APIError
-    def render_opts
-      { :text => "You need to supply a changeset to be able to make a change", :status => :conflict }
+    def status
+      :conflict
+    end
+
+    def to_s
+      "You need to supply a changeset to be able to make a change"
     end
   end
 
@@ -69,10 +107,13 @@ module OSM
     def initialize(provided, allowed)
       @provided, @allowed = provided, allowed
     end
-    
-    def render_opts
-      { :text => "Changeset mismatch: Provided #{@provided} but only " +
-        "#{@allowed} is allowed.", :status => :conflict }
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "Changeset mismatch: Provided #{@provided} but only #{@allowed} is allowed"
     end
   end
   
@@ -82,23 +123,29 @@ module OSM
     def initialize(provided)
       @provided = provided
     end
+
+    def status
+      :bad_request
+    end
     
-    def render_opts
-      { :text => "Unknown action #{@provided}, choices are create, modify, delete.",
-      :status => :bad_request }
+    def to_s
+      "Unknown action #{@provided}, choices are create, modify, delete"
     end
   end
 
   # Raised when bad XML is encountered which stops things parsing as
   # they should.
   class APIBadXMLError < APIError
-    def initialize(model, xml)
-      @model, @xml = model, xml
+    def initialize(model, xml, message="")
+      @model, @xml, @message = model, xml, message
     end
 
-    def render_opts
-      { :text => "Cannot parse valid #{@model} from xml string #{@xml}",
-        :status => :bad_request }
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Cannot parse valid #{@model} from xml string #{@xml}. #{@message}"
     end
   end
 
@@ -110,10 +157,12 @@ module OSM
 
     attr_reader :provided, :latest, :id, :type
 
-    def render_opts
-      { :text => "Version mismatch: Provided " + provided.to_s +
-        ", server had: " + latest.to_s + " of " + type + " " + id.to_s, 
-        :status => :conflict }
+    def status
+      :conflict
+    end
+
+    def to_s
+      "Version mismatch: Provided #{provided}, server had: #{latest} of #{type} #{id}"
     end
   end
 
@@ -126,9 +175,12 @@ module OSM
 
     attr_reader :type, :id, :tag_key
 
-    def render_opts
-      { :text => "Element #{@type}/#{@id} has duplicate tags with key #{@tag_key}.",
-        :status => :bad_request }
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Element #{@type}/#{@id} has duplicate tags with key #{@tag_key}"
     end
   end
   
@@ -140,10 +192,13 @@ module OSM
     end
     
     attr_reader :provided, :max
+
+    def status
+      :bad_request
+    end
     
-    def render_opts
-      { :text => "You tried to add #{provided} nodes to the way, however only #{max} are allowed",
-      :status => :bad_request }
+    def to_s
+      "You tried to add #{provided} nodes to the way, however only #{max} are allowed"
     end
   end
 
@@ -154,8 +209,56 @@ module OSM
       @message = message
     end
 
-    def render_opts
-      { :text => message, :mime_type => "text/plain", :status => :bad_request }
+    def status
+      :bad_request
+    end
+
+    def to_s
+      @message
+    end
+  end
+
+  ##
+  # raised when bounding box is invalid
+  class APIBadBoundingBox < APIError
+    def initialize(message)
+      @message = message
+    end
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      @message
+    end
+  end
+
+  ##
+  # raised when an API call is made using a method not supported on that URI
+  class APIBadMethodError < APIError
+    def initialize(supported_method)
+      @supported_method = supported_method
+    end
+
+    def status
+      :method_not_allowed
+    end
+
+    def to_s
+      "Only method #{@supported_method} is supported on this URI"
+    end
+  end
+
+  ##
+  # raised when an API call takes too long
+  class APITimeoutError < APIError
+    def status
+      :request_timeout
+    end
+
+    def to_s
+      "Request timed out"
     end
   end
 
@@ -231,12 +334,17 @@ module OSM
       maxlon = (@lon + lonradius) * 180 / PI
       return { :minlat => minlat, :maxlat => maxlat, :minlon => minlon, :maxlon => maxlon }
     end
+
+    # get the SQL to use to calculate distance
+    def sql_for_distance(lat_field, lon_field)
+      "6372.795 * 2 * asin(sqrt(power(sin((radians(#{lat_field}) - #{@lat}) / 2), 2) + cos(#{@lat}) * cos(radians(#{lat_field})) * power(sin((radians(#{lon_field}) - #{@lon})/2), 2)))"
+    end
   end
 
   class GeoRSS
     def initialize(feed_title='OpenStreetMap GPS Traces', feed_description='OpenStreetMap GPS Traces', feed_url='http://www.openstreetmap.org/traces/')
       @doc = XML::Document.new
-      @doc.encoding = 'UTF-8' 
+      @doc.encoding = XML::Encoding::UTF_8
 
       rss = XML::Node.new 'rss'
       @doc.root = rss
@@ -322,7 +430,7 @@ module OSM
   class API
     def get_xml_doc
       doc = XML::Document.new
-      doc.encoding = 'UTF-8' 
+      doc.encoding = XML::Encoding::UTF_8
       root = XML::Node.new 'osm'
       root['version'] = API_VERSION
       root['generator'] = GENERATOR
@@ -336,16 +444,8 @@ module OSM
       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
+        country = Country.find_by_code(country)
+        return { :minlon => country.min_lon, :minlat => country.min_lat, :maxlon => country.max_lon, :maxlat => country.max_lat }
       end
     end