[Project] Don't duplicate file references

lib/cocoapods/installer/file_references_installer.rb

@@ -99,9 +99,6 @@ module Pod
       # @return [Array<Sandbox::FileAccessor>] The file accessors for all the
       #         specs platform combinations.
       #
-      # TODO    Ideally the file accessors should be created one per spec per
-      #         platform in a single installation.
-      #
       def file_accessors
         @file_accessors ||= libraries.map(&:file_accessors).flatten.compact
       end

lib/cocoapods/project.rb

@@ -92,8 +92,8 @@ module Pod
     def add_spec_group(spec_name, root_group)
       current_group = root_group
       group = nil
-      spec_name.split('/').each do |spec_name|
-        group = current_group[spec_name] || current_group.new_group(spec_name)
+      spec_name.split('/').each do |name|
+        group = current_group[name] || current_group.new_group(name)
         current_group = group
       end
       group
@@ -106,7 +106,12 @@ module Pod
     # @!group File references
 
     # Adds a file reference for each one of the given files in the specified
-    # group, namespaced by specification.
+    # group, namespaced by specification unless a file reference for the given
+    # path alrady exits.
+    #
+    # @note   With this set-up different subspecs might not reference the same
+    #         file (i.e. the first will win). Not sure thought if this is a
+    #         limitation or a feature.
     #
     # @param  [Array<Pathname,String>] paths
     #         The files for which the file reference is needed.
@@ -119,14 +124,17 @@ module Pod
     #
     # @return [void]
     #
-    def add_file_references(paths, spec_name, parent_group)
+    def add_file_references(absolute_path, spec_name, parent_group)
       group = add_spec_group(spec_name, parent_group)
-      paths.each do |file|
+      absolute_path.each do |file|
+        existing = file_reference(file)
+        unless existing
           file = Pathname.new(file)
           ref = group.new_file(relativize(file))
           @refs_by_absolute_path[file] = ref
         end
       end
+    end
 
     # Returns the file reference for the given absolute file path.
     #
@@ -137,7 +145,7 @@ module Pod
     # @return [Nil] If no file reference could be found.
     #
     def file_reference(absolute_path)
-      source_file = Pathname.new(absolute_path)
+      absolute_path = Pathname.new(absolute_path)
       refs_by_absolute_path[absolute_path]
     end
 

spec/integration_2.rb

@@ -52,7 +52,7 @@ $:.unshift((ROOT + 'spec').to_s)
 require 'spec_helper/bacon'
 require 'colored'
 require 'diffy'
-require 'Xcodeproj'
+require 'Xcodeproj' # For Differ
 
 # @return [Pathname The folder where the CocoaPods binary should operate.
 #
@@ -221,11 +221,16 @@ def yaml_should_match(expected, produced)
   # Remove CocoaPods version
   expected_yaml.delete('COCOAPODS')
   produced_yaml.delete('COCOAPODS')
-  desc = "YAML comparison error `#{expected}`"
-  desc << "\n EXPECTED:\n#{expected_yaml.inspect.cyan}\n"
-  desc << "\n PRODUCED:\n#{produced_yaml.inspect.cyan}\n"
-  # TODO extract Xcodeproj diff logic a provide a diff
-  expected_yaml.should.satisfy(desc) do |expected_yaml|
+  desc = []
+  desc << "YAML comparison error `#{expected}`"
+  diff_options = {:key_1 => "$produced", :key_2 => "$expected"}
+  diff = Xcodeproj::Differ.diff(produced_yaml, expected_yaml, diff_options).to_yaml
+  diff.gsub!("$produced", "produced".green)
+  diff.gsub!("$expected", "expected".red)
+  desc << ("--- DIFF " << "-" * 70)
+  desc << diff
+  desc << ("--- END " << "-" * 70)
+  expected_yaml.should.satisfy(desc * "\n\n") do
     if RUBY_VERSION < "1.9"
       true # CP is not sorting array derived from hashes whose order is
            # undefined in 1.8.7
@@ -277,11 +282,9 @@ def file_should_match(expected, produced)
     else description << line.gsub("\n",'')
     end
   end
-  description << "" << ("--- PRODUCED " << "-" * 66) << ""
-  description << File.read(produced)
   description << ("--- END " << "-" * 70)
   description << ""
-  is_equal.should.satisfy(description * "\n") do |is_equal|
+  is_equal.should.satisfy(description * "\n") do
     is_equal == true
   end
 end

spec/unit/project_spec.rb

@@ -57,6 +57,15 @@ describe Pod::Project do
       group.children.map(&:path).should == [ "A_POD/some_file.m" ]
     end
 
+    it "adds the only one file reference for a given absolute path" do
+      source_files = [ config.sandbox.root + "A_POD/some_file.m" ]
+      @project.add_file_references(source_files, 'BananaLib', @project.pods)
+      @project.add_file_references(source_files, 'BananaLib', @project.pods)
+      group = @project['Pods/BananaLib']
+      group.children.count.should == 1
+      group.children.first.path.should == "A_POD/some_file.m"
+    end
+
     it "returns the file reference for a given source file" do
       file = config.sandbox.root + "A_POD/some_file.m"
       @project.add_file_references([file], 'BananaLib', @project.pods)