factor out xml building and remove duplication

doc/tracks_cli/tracks_xml_builder.rb

@@ -0,0 +1,66 @@
+require 'time'
+
+module TracksCli
+
+  class TracksXmlBuilder
+
+    def xml_for_description(description)
+      "<description>#{description}</description>"
+    end
+
+    def xml_for_project_id(project_id)
+      "<project_id>#{project_id}</project_id>"
+    end
+
+    def xml_for_show_from(show_from)
+      show_from.nil? ? "" : "<show-from type=\"datetime\">#{Time.at(show_from).xmlschema}</show-from>"
+    end
+
+    def xml_for_notes(notes)
+      notes.nil? ? "" : "<notes>#{notes}</notes>"
+    end
+
+    def xml_for_taglist(taglist)
+      unless taglist.nil?
+        tags = taglist.split(",")
+        if tags.length() > 0
+          tags = tags.collect { |tag| "<tag><name>#{tag.strip}</name></tag>" unless tag.strip.empty?}.join('')
+          return "<tags>#{tags}</tags>"
+        end
+      else
+        return ""
+      end
+    end
+
+    def xml_for_context(context_name, context_id)
+      if context_name && context_name.empty?
+        return "<context><name>#{context_name}</name></context>"
+      else
+        return "<context_id>#{context_id}</context_id>"
+      end
+    end
+
+    def xml_for_predecessor(dependend, predecessor)
+      dependend ? "<predecessor_dependencies><predecessor>#{predecessor}</predecessor></predecessor_dependencies>" : ""
+    end
+
+    def build_todo_xml(todo)
+      props = [
+        xml_for_description(todo[:description]),
+        xml_for_project_id(todo[:project_id]),
+        xml_for_show_from(todo[:show_from]),
+        xml_for_notes(todo[:notes]),
+        xml_for_taglist(todo[:taglist]),
+        xml_for_context(todo[:context_name], todo[:context_id]),
+        xml_for_predecessor(todo[:is_dependend], todo[:predecessor])
+      ]
+
+      "<todo>#{props.join("")}</todo>"
+    end
+
+    def build_project_xml(project)
+      "<project><name>#{project[:description]}</name><default-context-id>#{project[:default_context_id]}</default-context-id></project>"
+    end
+
+  end
+end