Merge pull request #1563 from github/bkeepers/vendored-ignored-gitattributes

A few tweaks to ignored methods

lib/linguist/lazy_blob.rb

@@ -29,39 +29,30 @@ module Linguist
         name, GIT_ATTR, GIT_ATTR_FLAGS)
     end
 
-    def linguist_vendored?
-      if git_attributes['linguist-vendored']
-        return result_for_key('linguist-vendored')
+    def vendored?
+      if attr = git_attributes['linguist-vendored']
+        return boolean_attribute(attr)
       else
-        return vendored?
+        return super
       end
     end
 
-    def linguist_generated?
-      if git_attributes['linguist-generated']
-        return result_for_key('linguist-generated')
+    def generated?
+      if attr = git_attributes['linguist-generated']
+        return boolean_attribute(attr)
       else
-        return generated?
-      end
-    end
-
-    def result_for_key(keyname)
-      key = git_attributes[keyname]
-      if key == "false" || key.nil?
-        return false
-      else
-        return true
-      end
-    end
-
-    def overriden_language
-      if lang = git_attributes['linguist-language']
-        Language.find_by_name(lang)
+        return super
       end
     end
 
     def language
-      @language ||= (overriden_language || Language.detect(self))
+      return @language if defined?(@language)
+
+      @language = if lang = git_attributes['linguist-language']
+        Language.find_by_name(lang)
+      else
+        super
+      end
     end
 
     def data
@@ -75,6 +66,12 @@ module Linguist
     end
 
     protected
+
+    # Returns true if the attribute is present and not the string "false".
+    def boolean_attribute(attr)
+      attr != "false"
+    end
+
     def load_blob!
       @data, @size = Rugged::Blob.to_buffer(repository, oid, MAX_SIZE) if @data.nil?
     end

lib/linguist/repository.rb

@@ -110,22 +110,30 @@ module Linguist
         if @old_commit_oid == @commit_oid
           @old_stats
         else
-          compute_stats(@old_commit_oid, @commit_oid, @old_stats)
+          compute_stats(@old_commit_oid, @old_stats)
         end
       end
     end
 
+    def read_index
+      attr_index = Rugged::Index.new
+      attr_index.read_tree(current_tree)
+      repository.index = attr_index
+    end
+
+    def current_tree
+      @tree ||= Rugged::Commit.lookup(repository, @commit_oid).tree
+    end
+
     protected
-    def compute_stats(old_commit_oid, commit_oid, cache = nil)
+
+    def compute_stats(old_commit_oid, cache = nil)
       file_map = cache ? cache.dup : {}
       old_tree = old_commit_oid && Rugged::Commit.lookup(repository, old_commit_oid).tree
-      new_tree = Rugged::Commit.lookup(repository, commit_oid).tree
 
-      diff = Rugged::Tree.diff(repository, old_tree, new_tree)
+      read_index
 
-      attr_index = Rugged::Index.new
-      attr_index.read_tree(new_tree)
-      repository.index = attr_index
+      diff = Rugged::Tree.diff(repository, old_tree, current_tree)
 
       diff.each_delta do |delta|
         old = delta.old_file[:path]
@@ -142,7 +150,7 @@ module Linguist
           blob = Linguist::LazyBlob.new(repository, delta.new_file[:oid], new, mode.to_s(8))
 
           # Skip vendored or generated blobs
-          next if blob.linguist_vendored? || blob.linguist_generated? || blob.language.nil?
+          next if blob.vendored? || blob.generated? || blob.language.nil?
 
           # Only include programming languages and acceptable markup languages
           if blob.language.type == :programming || Language.detectable_markup.include?(blob.language.name)

test/test_repository.rb

@@ -68,64 +68,34 @@ class TestRepository < Test::Unit::TestCase
     assert !repo.breakdown_by_file["Ruby"].empty?
   end
 
-
-  def test_linguist_generated?
+  def test_linguist_override_generated?
     attr_commit = 'b533b682d5d4012ca42f4fc998b45169ec41fe33'
+    linguist_repo(attr_commit).read_index
 
     file = Linguist::LazyBlob.new(rugged_repository, attr_commit, 'Rakefile')
 
-    git_attrs = { "linguist-language" => nil,
-                  "linguist-vendored" => nil,
-                  "linguist-generated"=> true }
-
-    # TODO: get rid of this (would like this to come from git data)
-    file.stubs(:git_attributes).returns(git_attrs)
-
-    # check we're getting the correct assignment back from .gitattributes
-    assert file.result_for_key('linguist-generated')
     # overridden in .gitattributes
-    assert file.linguist_generated?
-    # from lib/linguist/generated.rb
-    assert !file.generated?
+    assert file.generated?
   end
 
   def test_linguist_override_vendored?
     attr_commit = 'b533b682d5d4012ca42f4fc998b45169ec41fe33'
+    repo = linguist_repo(attr_commit).read_index
+
     override_vendored = Linguist::LazyBlob.new(rugged_repository, attr_commit, 'Gemfile')
 
-    git_attrs = { "linguist-language" => nil,
-                  "linguist-vendored" => true,
-                  "linguist-generated"=> nil }
-
-    # TODO: get rid of this (would like this to come from git data)
-    override_vendored.stubs(:git_attributes).returns(git_attrs)
-
-    # check we're getting the correct assignment back from .gitattributes
-    assert override_vendored.result_for_key('linguist-vendored')
     # overridden .gitattributes
-    assert override_vendored.linguist_vendored?
-    # from lib/linguist/vendor.yml
-    assert !override_vendored.vendored?
+    assert override_vendored.vendored?
   end
 
   def test_linguist_override_unvendored?
     attr_commit = 'b533b682d5d4012ca42f4fc998b45169ec41fe33'
+    repo = linguist_repo(attr_commit).read_index
 
     # lib/linguist/vendor.yml defines this as vendored.
     override_unvendored = Linguist::LazyBlob.new(rugged_repository, attr_commit, 'test/fixtures/foo.rb')
 
-    git_attrs = { "linguist-language" => nil,
-                  "linguist-vendored" => "false",
-                  "linguist-generated"=> nil }
-
-    # TODO: get rid of this (would like this to come from git data)
-    override_unvendored.stubs(:git_attributes).returns(git_attrs)
-
-    # check we're getting the correct assignment back from .gitattributes
-    assert !override_unvendored.result_for_key('linguist-vendored')
     # overridden .gitattributes
-    assert !override_unvendored.linguist_vendored?
-    # from lib/linguist/vendor.yml
-    assert override_unvendored.vendored?
+    assert !override_unvendored.vendored?
   end
 end