[Installer] Implement migrator

lib/cocoapods/installer.rb

@@ -87,7 +87,7 @@ module Pod
     # @return [void]
     #
     def install!
-      migrate_installation_if_needed
+      prepare
       resolve_dependencies
       download_dependencies
       generate_pods_project
@@ -95,10 +95,10 @@ module Pod
       perform_post_install_actions
     end
 
-    def migrate_installation_if_needed
-      UI.section "Performing existing installation migration" do
-        migrator = Migrator.new(sandbox)
-        migrator.migrate!
+    def prepare
+      UI.section "Preparing" do
+        sandbox.prepare
+        Migrator.migrate(sandbox)
       end
     end
 

lib/cocoapods/installer/migrator.rb

+require 'fileutils'
+
 module Pod
   class Installer
-
     # Migrates installations performed by previous versions of CocoaPods.
     #
     class Migrator
-
-      #
-      #
-      attr_reader :installation_version
-
-      #
-      #
-      attr_reader :sandbox
-
+      class << self
+        # Performs the migration.
         #
+        # @param  [Sandbox] The sandbox which should be migrated.
         #
-      def initialize(sandbox)
-        @sandbox = sandbox
-      end
-
-      #
-      #
-      def migrate!
+        def migrate(sandbox)
           if sandbox.manifest
-          migrate_to_0_20 if version_minor('0.20')
+            migrate_to_0_34(sandbox) if installation_minor?('0.34', sandbox)
           end
         end
 
-      #-----------------------------------------------------------------------#
-
-      private
-
         # @!group Migration Steps
 
-      # TODO: Fix copy resources script
-      # TODO: Fix manifest check
-      # TODO: Fix xcconfig
-      # TODO: Group target support files
+        # Migrates from CocoaPods versions previous to 0.34.
         #
-      def migrate_to_0_20
+        def migrate_to_0_34(sandbox)
           title_options = { :verbose_prefix => "-> ".green }
-        UI.titled_section("Migrating to CocoaPods 0.20".green, title_options) do
-          mkdir(sandbox.generated_dir_root)
-          mkdir(sandbox.headers_root)
-          mkdir(sandbox.sources_root)
+          UI.titled_section("Migrating to CocoaPods 0.34".green, title_options) do
+            delete(sandbox.root + 'Headers')
+            make_path(sandbox.headers_root)
+
             sandbox.root.children.each do |child|
               relative = child.relative_path_from(sandbox.root)
               case relative.to_s
-            when 'Generated'
+              when 'Manifest.lock', 'Pods.xcodeproj', 'Sources', 'Headers',
+                'Target Support Files', 'Local Podspecs'
                 next
-            when 'BuildHeaders', 'Headers'
-              move(child, sandbox.headers_root + relative)
+              when 'BuildHeaders', 'PublicHeaders'
+                delete(child)
               else
                 if child.directory? && child.extname != '.xcodeproj'
                   move(child, sandbox.sources_root + relative)
                 else
-                move(child, sandbox.generated_dir_root + relative)
+                  delete(child)
                 end
               end
             end
           end
         end
 
-
-      #-----------------------------------------------------------------------#
-
-      private
-
         # @!group Private helpers
 
-      def version_minor(target_version)
-        installation_version < Version.new(target_version)
+        def installation_minor?(target_version, sandbox)
+          sandbox.manifest.cocoapods_version < Version.new(target_version)
         end
 
-      def installation_version
-        sandbox.manifest.cocoapods_version
-      end
-
-      def mkdir(path)
+        # Makes a path creating any intermediate directory and printing an UI
+        # message.
+        #
+        # @path [#to_s] path
+        #       The path.
+        #
+        def make_path(path)
+          return if path.exist?
+          UI.message "- Making path #{UI.path(path)}" do
             path.mkpath
           end
-
-      def move(path, new_name)
-        path.rename(new_name)
         end
 
-      #-----------------------------------------------------------------------#
+        # Moves a path to another one printing an UI message.
+        #
+        # @path [#to_s] source
+        #       The path to move.
+        #
+        # @path [#to_s] destination
+        #       The destination path.
+        #
+        def move(source, destination)
+          return unless source.exist?
+          make_path(destination.dirname)
+          UI.message "- Moving #{UI.path(source)} to #{UI.path(destination)}" do
+            FileUtils.mv(source.to_s, destination.to_s)
+          end
+        end
 
+        # Deletes a path, including non empty directories, printing an UI
+        # message.
+        #
+        # @path [#to_s] path
+        #       The path.
+        #
+        def delete(path)
+          return unless path.exist?
+          UI.message "- Deleting #{UI.path(path)}" do
+            FileUtils.rm_rf(path)
+          end
+        end
+      end
     end
   end
 end

lib/cocoapods/installer/user_project_integrator/target_integrator.rb

@@ -77,8 +77,8 @@ module Pod
           native_targets_to_integrate.each do |native_target|
             phase = native_target.shell_script_build_phases.select { |bp| bp.name == phase_name }.first ||
                     native_target.new_shell_script_build_phase(phase_name)
-            path  = target.copy_resources_script_relative_path
-            phase.shell_script = %(            "#{path}"\n            )
+            script_path  = target.copy_resources_script_relative_path
+            phase.shell_script = %("#{script_path}"\n)
             phase.show_env_vars_in_log = '0'
           end
         end

lib/cocoapods/installer/user_project_integrator/target_integrator/xcconfig_integrator.rb

@@ -41,14 +41,20 @@ module Pod
           # @todo   This can be removed for CocoaPods 1.0
           #
           def self.update_from_cocoapods_0_33_1(pod_bundle, targets)
+            sandbox = pod_bundle.sandbox
             targets.map(&:project).uniq.each do |project|
-              path = pod_bundle.xcconfig_relative_path(nil)
-              file_ref = project.files.find { |f| f.path == path }
-              if file_ref
-                UI.message "- Removing (#{path})" do
+              file_refs = project.files.select do |file_ref|
+                path = file_ref.path.to_s
+                if File.extname(path) == '.xcconfig'
+                  absolute_path = file_ref.real_path.to_s
+                  absolute_path.start_with?(sandbox.root.to_s) &&
+                    !absolute_path.start_with?(sandbox.target_support_files_root.to_s)
+                end
+              end
+
+              file_refs.uniq.each do |file_ref|
+                UI.message "- Removing (#{file_ref.path})" do
                   file_ref.remove_from_project
-                  absolute_path = pod_bundle.xcconfig_path
-                  File.delete(absolute_path) if File.exist?(absolute_path)
                 end
               end
             end

lib/cocoapods/sandbox.rb

@@ -60,9 +60,6 @@ module Pod
       @checkout_sources = {}
       @development_pods = {}
       @pods_with_absolute_path = []
-      FileUtils.mkdir_p(headers_root)
-      FileUtils.mkdir_p(sources_root)
-      FileUtils.mkdir_p(target_support_files_root)
     end
 
     # @return [Lockfile] the manifest which contains the information about the
@@ -90,6 +87,19 @@ module Pod
       podspe_path.rmtree if podspe_path
     end
 
+    # Prepares the sandbox for a new installation removing any file that will
+    # be regenerated and ensuring that the directories exists.
+    #
+    def prepare
+      FileUtils.rm_rf(headers_root)
+      FileUtils.rm_rf(target_support_files_root)
+
+      FileUtils.mkdir_p(headers_root)
+      FileUtils.mkdir_p(sources_root)
+      FileUtils.mkdir_p(specifications_root)
+      FileUtils.mkdir_p(target_support_files_root)
+    end
+
     # @return [String] a string representation suitable for debugging.
     #
     def inspect
@@ -166,6 +176,13 @@ module Pod
       root + 'Sources'
     end
 
+    # @return [Pathname] the path for the directory where to store the
+    #         specifications.
+    #
+    def specifications_root
+      root + "Local Podspecs"
+    end
+
     # @return [Pathname] The directory where to store the files generated by
     #         CocoaPods to support the umbrella targets.
     #
@@ -193,15 +210,7 @@ module Pod
       end
     end
 
-    # @return [Pathname] the path for the directory where to store the
-    #         specifications.
-    #
-    # @todo   Migrate old installations and store the for all the pods.
-    #         Two folders should be created `External Sources` and `Podspecs`.
-    #
-    def specifications_dir(_external_source = false)
-      root + "Local Podspecs"
-    end
+
 
     # Returns the path of the specification for the Pod with the
     # given name, if one is stored.
@@ -213,11 +222,11 @@ module Pod
     # @return [Nil] if the podspec is not stored.
     #
     def specification_path(name)
-      path = specifications_dir + "#{name}.podspec"
+      path = specifications_root + "#{name}.podspec"
       if path.exist?
         path
       else
-        path = specifications_dir + "#{name}.podspec.json"
+        path = specifications_root + "#{name}.podspec.json"
         if path.exist?
           path
         else
@@ -240,7 +249,7 @@ module Pod
     #
     def store_podspec(name, podspec, external_source = false, json = false)
       file_name = json ? "#{name}.podspec.json" : "#{name}.podspec"
-      output_path = specifications_dir(external_source) + file_name
+      output_path = specifications_root + file_name
       output_path.dirname.mkpath
       if podspec.is_a?(String)
         output_path.open('w') { |f| f.puts(podspec) }

spec/unit/external_sources/abstract_external_source_spec.rb

@@ -6,6 +6,7 @@ module Pod
     before do
       dependency = Dependency.new('Reachability', :git => fixture('integration/Reachability'))
       @subject = ExternalSources.from_dependency(dependency, nil)
+      config.sandbox.prepare
     end
 
     #--------------------------------------#
@@ -36,7 +37,7 @@ module Pod
 
       it 'pre-downloads the Pod and stores the relevant information in the sandbox' do
         @subject.send(:pre_download, config.sandbox)
-        path = config.sandbox.specifications_dir + 'Reachability.podspec'
+        path = config.sandbox.specifications_root + 'Reachability.podspec'
         path.should.exist?
         config.sandbox.predownloaded_pods.should == ['Reachability']
         config.sandbox.checkout_sources.should == {

spec/unit/external_sources/downloader_source_spec.rb

@@ -13,7 +13,7 @@ module Pod
 
     it 'creates a copy of the podspec' do
       @subject.fetch(config.sandbox)
-      path = config.sandbox.specifications_dir + 'Reachability.podspec'
+      path = config.sandbox.specifications_root + 'Reachability.podspec'
       path.should.exist?
     end
 

spec/unit/external_sources/path_source_spec.rb

@@ -12,7 +12,7 @@ module Pod
 
     it "creates a copy of the podspec" do
       @subject.fetch(config.sandbox)
-      path = config.sandbox.specifications_dir + 'Reachability.podspec'
+      path = config.sandbox.specifications_root + 'Reachability.podspec'
       path.should.exist?
     end
 
@@ -22,7 +22,7 @@ module Pod
       podfile_path = fixture('integration/Podfile')
       @subject = ExternalSources.from_dependency(dependency, podfile_path)
       @subject.fetch(config.sandbox)
-      path = config.sandbox.specifications_dir + 'Reachability.podspec'
+      path = config.sandbox.specifications_root + 'Reachability.podspec'
       path.should.exist?
     end
 

spec/unit/external_sources/podspec_source_spec.rb

@@ -12,7 +12,7 @@ module Pod
 
     it "creates a copy of the podspec" do
       @subject.fetch(config.sandbox)
-      path = config.sandbox.specifications_dir + 'Reachability.podspec'
+      path = config.sandbox.specifications_root + 'Reachability.podspec'
       path.should.exist?
     end
 

spec/unit/installer/migrator_spec.rb

+require File.expand_path('../../../spec_helper', __FILE__)
+
+module Pod
+  describe Installer::Migrator do
+    it 'performs a migration' do
+      manifest = stub(:cocoapods_version => Version.new('0.32'))
+      config.sandbox.stubs(:manifest).returns(manifest)
+      old_path = config.sandbox.root + 'ARAnalytics'
+      old_path.mkdir
+      Installer::Migrator.migrate(config.sandbox)
+      old_path.should.not.exist?
+      (config.sandbox.sources_root + 'ARAnalytics').should.exist?
+    end
+
+    it "doesn't perform migrations if they are not needed" do
+      manifest = stub(:cocoapods_version => Version.new('999'))
+      config.sandbox.stubs(:manifest).returns(manifest)
+      Installer::Migrator.expects(:migrate_to_0_34).never
+      Installer::Migrator.migrate(config.sandbox)
+    end
+  end
+end

spec/unit/installer/target_installer/aggregate_target_installer_spec.rb

@@ -4,6 +4,7 @@ module Pod
   describe Installer::AggregateTargetInstaller do
     describe 'In General' do
       before do
+        config.sandbox.prepare
         @podfile = Podfile.new do
           platform :ios
           xcodeproj 'dummy'

spec/unit/installer/target_installer/pod_target_installer_spec.rb

@@ -4,6 +4,7 @@ module Pod
   describe Installer::PodTargetInstaller do
     describe 'In General' do
       before do
+        config.sandbox.prepare
         @podfile = Podfile.new do
           platform :ios
           xcodeproj 'dummy'

spec/unit/installer/user_project_integrator/target_integrator/xcconfig_integrator_spec.rb

@@ -28,8 +28,6 @@ module Pod
       file_ref = @project.new_file(path)
       config = @target.build_configuration_list['Release']
       config.base_configuration_reference = file_ref
-      File.expects(:exist?).returns(true)
-      File.expects(:delete).with(path)
       XCConfigIntegrator.integrate(@pod_bundle, [@target])
       @project.files.find { |f| f.path == path }.should.be.nil
     end

spec/unit/sandbox_spec.rb

@@ -94,8 +94,8 @@ module Pod
     describe 'Specification store' do
 
       it 'loads the stored specification with the given name' do
-        (@sandbox.specifications_dir).mkdir
-        FileUtils.cp(fixture('banana-lib/BananaLib.podspec'), @sandbox.specifications_dir)
+        (@sandbox.specifications_root).mkdir
+        FileUtils.cp(fixture('banana-lib/BananaLib.podspec'), @sandbox.specifications_root)
         @sandbox.specification('BananaLib').name.should == 'BananaLib'
       end
 
@@ -112,7 +112,7 @@ module Pod
       end
 
       it 'returns the directory where to store the specifications' do
-        @sandbox.specifications_dir.should == temporary_directory + 'Sandbox/Local Podspecs'
+        @sandbox.specifications_root.should == temporary_directory + 'Sandbox/Local Podspecs'
       end
 
       it "returns the path to a spec file in the 'Local Podspecs' dir" do