auto resolve bottle root_url based on tap

Library/Homebrew/bottles.rb

@@ -67,7 +67,7 @@ class Bintray
   end
 
   def self.repository(tap=nil)
-    return "bottles" if tap.to_s.empty?
+    return "bottles" if tap.nil? || tap == "Homebrew/homebrew" || tap == "mxcl/master"
     "bottles-#{tap.sub(/^homebrew\/(homebrew-)?/i, "")}"
   end
 end

Library/Homebrew/software_spec.rb

@@ -47,6 +47,7 @@ class SoftwareSpec
   def owner= owner
     @name = owner.name
     @full_name = owner.full_name
+    @bottle_specification.tap = owner.tap
     @owner = owner
     @resource.owner = self
     resources.each_value do |r|
@@ -259,19 +260,26 @@ class BottleSpecification
   DEFAULT_PREFIX = "/usr/local".freeze
   DEFAULT_CELLAR = "/usr/local/Cellar".freeze
   DEFAULT_DOMAIN = "https://homebrew.bintray.com".freeze
-  DEFAULT_ROOT_URL = "#{DEFAULT_DOMAIN}/bottles".freeze
 
-  attr_rw :root_url, :prefix, :cellar, :revision
+  attr_rw :prefix, :cellar, :revision
+  attr_accessor :tap
   attr_reader :checksum, :collector
 
   def initialize
     @revision = 0
     @prefix = DEFAULT_PREFIX
     @cellar = DEFAULT_CELLAR
-    @root_url = DEFAULT_ROOT_URL
     @collector = BottleCollector.new
   end
 
+  def root_url(var=nil)
+    if var.nil?
+      @root_url ||= "#{DEFAULT_DOMAIN}/#{Bintray.repository(tap)}"
+    else
+      @root_url = var
+    end
+  end
+
   def compatible_cellar?
     cellar == :any || cellar == HOMEBREW_CELLAR.to_s
   end

Library/Homebrew/test/test_software_spec.rb

@@ -22,19 +22,24 @@ class SoftwareSpecTests < Homebrew::TestCase
     @spec.owner = Class.new do
       def name; "test"; end
       def full_name; "test"; end
+      def tap; "Homebrew/homebrew"; end
     end.new
     assert_raises(ResourceMissingError) { @spec.resource('foo') }
   end
 
   def test_set_owner
-    owner = stub(:name => 'some_name', :full_name => 'some_name')
+    owner = stub :name => 'some_name',
+                 :full_name => 'some_name',
+                 :tap => "Homebrew/homebrew"
     @spec.owner = owner
     assert_equal owner, @spec.owner
   end
 
   def test_resource_owner
     @spec.resource('foo') { url 'foo-1.0' }
-    @spec.owner = stub(:name => 'some_name', :full_name => 'some_name')
+    @spec.owner = stub :name => 'some_name',
+                       :full_name => 'some_name',
+                       :tap => "Homebrew/homebrew"
     assert_equal 'some_name', @spec.name
     @spec.resources.each_value { |r| assert_equal @spec, r.owner }
   end
@@ -42,7 +47,9 @@ class SoftwareSpecTests < Homebrew::TestCase
   def test_resource_without_version_receives_owners_version
     @spec.url('foo-42')
     @spec.resource('bar') { url 'bar' }
-    @spec.owner = stub(:name => 'some_name', :full_name => 'some_name')
+    @spec.owner = stub :name => 'some_name',
+                       :full_name => 'some_name',
+                       :tap => "Homebrew/homebrew"
     assert_version_equal '42', @spec.resource('bar').version
   end