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[rails.git] / lib / diff_reader.rb

diff --git a/lib/diff_reader.rb b/lib/diff_reader.rb
index c2e7f18394a8769ec284ecb276d45af329f16477..d1987a93622f0d1a44eb128555f6f6cc4258bd26 100644 (file)
--- a/lib/diff_reader.rb
+++ b/lib/diff_reader.rb
@@ -8,8 +8,8 @@ class DiffReader
 
   # maps each element type to the model class which handles it
   MODELS = {
 
   # maps each element type to the model class which handles it
   MODELS = {

-    "node"     => Node,
-    "way"      => Way,
+    "node" => Node,
+    "way" => Way,

     "relation" => Relation
   }.freeze
 
     "relation" => Relation
   }.freeze
 


@@ -33,8 +33,8 @@ class DiffReader
     # NOTE: XML::Reader#read returns false for EOF and raises an
     # exception if an error occurs.
     @reader.read
     # NOTE: XML::Reader#read returns false for EOF and raises an
     # exception if an error occurs.
     @reader.read

-  rescue LibXML::XML::Error => ex
-    raise OSM::APIBadXMLError.new("changeset", xml, ex.message)
+  rescue LibXML::XML::Error => e
+    raise OSM::APIBadXMLError.new("changeset", xml, e.message)

   end
 
   ##
   end
 
   ##


@@ -60,9 +60,7 @@ class DiffReader
           attributes = {}
 
           if @reader.has_attributes?
           attributes = {}
 
           if @reader.has_attributes?

-            while @reader.move_to_next_attribute == 1
-              attributes[@reader.name] = @reader.value
-            end
+            attributes[@reader.name] = @reader.value while @reader.move_to_next_attribute == 1

 
             @reader.move_to_element
           end
 
             @reader.move_to_element
           end


@@ -86,8 +84,8 @@ class DiffReader
     with_element do |model_name, _model_attributes|
       model = MODELS[model_name]
       if model.nil?
     with_element do |model_name, _model_attributes|
       model = MODELS[model_name]
       if model.nil?

-        raise OSM::APIBadUserInput.new("Unexpected element type #{model_name}, " +
-                                       "expected node, way or relation.")
+        raise OSM::APIBadUserInput, "Unexpected element type #{model_name}, " \
+                                    "expected node, way or relation."

       end
       # new in libxml-ruby >= 2, expand returns an element not associated
       # with a document. this means that there's no encoding parameter,
       end
       # new in libxml-ruby >= 2, expand returns an element not associated
       # with a document. this means that there's no encoding parameter,


@@ -112,9 +110,7 @@ class DiffReader
   # such as save_ and delete_with_history.
   def check(model, xml, new)
     raise OSM::APIBadXMLError.new(model, xml) if new.nil?
   # such as save_ and delete_with_history.
   def check(model, xml, new)
     raise OSM::APIBadXMLError.new(model, xml) if new.nil?

-    unless new.changeset_id == @changeset.id
-      raise OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id)
-    end
+    raise OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id) unless new.changeset_id == @changeset.id

   end
 
   ##
   end
 
   ##


@@ -130,18 +126,19 @@ class DiffReader
 
     # take the first element and check that it is an osmChange element
     @reader.read
 
     # take the first element and check that it is an osmChange element
     @reader.read

-    raise OSM::APIBadUserInput.new("Document element should be 'osmChange'.") if @reader.name != "osmChange"
+    raise OSM::APIBadUserInput, "Document element should be 'osmChange'." if @reader.name != "osmChange"

 
 

-    result = OSM::API.new.get_xml_doc
+    result = OSM::API.new.xml_doc

     result.root.name = "diffResult"
 
     # loop at the top level, within the <osmChange> element
     with_element do |action_name, action_attributes|
     result.root.name = "diffResult"
 
     # loop at the top level, within the <osmChange> element
     with_element do |action_name, action_attributes|

-      if action_name == "create"
+      case action_name
+      when "create"

         # create a new element. this code is agnostic of the element type
         # because all the elements support the methods that we're using.
         with_model do |model, xml|
         # create a new element. this code is agnostic of the element type
         # because all the elements support the methods that we're using.
         with_model do |model, xml|

-          new = model.from_xml_node(xml, true)
+          new = model.from_xml_node(xml, :create => true)

           check(model, xml, new)
 
           # when this element is saved it will get a new ID, so we save it
           check(model, xml, new)
 
           # when this element is saved it will get a new ID, so we save it


@@ -152,7 +149,7 @@ class DiffReader
           # check if the placeholder ID has been given before and throw
           # an exception if it has - we can't create the same element twice.
           model_sym = model.to_s.downcase.to_sym
           # check if the placeholder ID has been given before and throw
           # an exception if it has - we can't create the same element twice.
           model_sym = model.to_s.downcase.to_sym

-          raise OSM::APIBadUserInput.new("Placeholder IDs must be unique for created elements.") if ids[model_sym].include? placeholder_id
+          raise OSM::APIBadUserInput, "Placeholder IDs must be unique for created elements." if ids[model_sym].include? placeholder_id

 
           # some elements may have placeholders for other elements in the
           # diff, so we must fix these before saving the element.
 
           # some elements may have placeholders for other elements in the
           # diff, so we must fix these before saving the element.


@@ -172,12 +169,12 @@ class DiffReader
           result.root << xml_result
         end
 
           result.root << xml_result
         end
 

-      elsif action_name == "modify"
+      when "modify"

         # modify an existing element. again, this code doesn't directly deal
         # with types, but uses duck typing to handle them transparently.
         with_model do |model, xml|
           # get the new element from the XML payload
         # modify an existing element. again, this code doesn't directly deal
         # with types, but uses duck typing to handle them transparently.
         with_model do |model, xml|
           # get the new element from the XML payload

-          new = model.from_xml_node(xml, false)
+          new = model.from_xml_node(xml, :create => false)

           check(model, xml, new)
 
           # if the ID is a placeholder then map it to the real ID
           check(model, xml, new)
 
           # if the ID is a placeholder then map it to the real ID


@@ -204,7 +201,7 @@ class DiffReader
           result.root << xml_result
         end
 
           result.root << xml_result
         end
 

-      elsif action_name == "delete"
+      when "delete"

         # delete action. this takes a payload in API 0.6, so we need to do
         # most of the same checks that are done for the modify.
         with_model do |model, xml|
         # delete action. this takes a payload in API 0.6, so we need to do
         # most of the same checks that are done for the modify.
         with_model do |model, xml|


@@ -252,7 +249,7 @@ class DiffReader
 
       else
         # no other actions to choose from, so it must be the users fault!
 
       else
         # no other actions to choose from, so it must be the users fault!

-        raise OSM::APIChangesetActionInvalid.new(action_name)
+        raise OSM::APIChangesetActionInvalid, action_name

       end
     end
 
       end
     end