Fixes #52 by allowing relative resource paths

* Some necessary refactoring in bin/occi
* Some necessary refactoring in bin/occi helpers
* Minor fixes in ClientHttp to allow relative resource paths

bin/occi

@@ -41,28 +41,6 @@ output = Occi::Bin::ResourceOutputFactory.new options.output_format
 Occi::Log.info "Starting OCCI client ..."
 Occi::Log.debug "Options: #{options}"
 
-# TODO: this part isn't necessary, just annoying
-# to make the interactive mode completely self-sufficient
-# ask for endpoint and auth method (provide defaults)
-#if options.interactive
-#  Occi::Log.debug "Checking for endpoint and auth changes ..."
-#
-# options.endpoint = ask("What endpoint should I use? ") {
-#     |q| q.default = options.endpoint
-# }
-#
-# # separate menus
-# say "\n"
-#
-# choose do |menu|
-#   menu.prompt = "Which auth method should I use? "
-#
-#   Occi::Bin::OcciOpts::AUTH_METHODS.each do |auth_m|
-#     menu.choice(auth_m) { options.auth[:type] = auth_m.to_s }
-#   end
-# end
-#end
-
 # running with an empty password, we should ask the user for one
 # if auth method is not "none"
 if options.auth[:password].nil? || options.auth[:user_cert_password].nil? || options.auth[:token].nil?
@@ -340,40 +318,15 @@ begin
   # call the appropriate helper and then format its output
   case options.action
     when :list
-      found = helper_list options
-
-      valid = Occi::Bin::ResourceOutputFactory.allowed_resource_types.include? options.resource.to_sym
-      Occi::Log.error "Not printing, the resource type is not supported!" unless valid
-
-      puts output.format(found, :locations, options.resource.to_sym) if valid
+      helper_list options, output
     when :describe
-      found = helper_describe options
-
-      if options.resource.start_with? options.endpoint
-        resource_type = options.resource.split("/")[3].to_sym
-      elsif mixin_types.include? options.resource.split('#').first
-        resource_type = options.resource.split('#').first.to_sym
-      else
-        resource_type = options.resource.to_sym
-      end
-
-      valid = Occi::Bin::ResourceOutputFactory.allowed_resource_types.include? resource_type
-      Occi::Log.error "Not printing, the resource type is not supported!" unless valid
-
-      puts output.format(found, :resources, resource_type) if valid
+      helper_describe options, output
     when :create
-      location = helper_create options
-      puts location
+      helper_create options, output
     when :delete
-      result = helper_delete options
-
-      if result
-        puts "Resource #{options.resource} successfully removed!"
-      else
-        puts "Failed to remove resource #{options.resource}!"
-      end
+      helper_delete options, output
     when :trigger
-      helper_trigger options
+      helper_trigger options, output
     when :refresh
       refresh
     when :skip