Allow the specification of a source URL in a Podfile

Gemfile

@@ -12,7 +12,7 @@ gemspec
 
 group :development do
   cp_gem 'claide',               'CLAide'
-  cp_gem 'cocoapods-core',       'Core'
+  cp_gem 'cocoapods-core',       'Core', 'source-url'
   cp_gem 'cocoapods-downloader', 'cocoapods-downloader'
   cp_gem 'cocoapods-plugins',    'cocoapods-plugins'
   cp_gem 'cocoapods-trunk',      'cocoapods-trunk'

Gemfile.lock

@@ -7,8 +7,8 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Core.git
-  revision: afe219baa5a4854067145825d0c141e43eee0e6a
-  branch: master
+  revision: 4189457e12113b09eafc1ebabcf1559fc23ef7b9
+  branch: source-url
   specs:
     cocoapods-core (0.34.0.rc2)
       activesupport (>= 3.2.15)

lib/cocoapods/installer/analyzer.rb

@@ -318,12 +318,6 @@ module Pod
       def resolve_dependencies
         specs_by_target = nil
         UI.section "Resolving dependencies of #{UI.path podfile.defined_in_file}" do
-          if podfile.sources.empty?
-            sources = SourcesManager.master
-          else
-            sources = SourcesManager.sources(podfile.sources)
-          end
-
           resolver = Resolver.new(sandbox, podfile, locked_dependencies, sources)
           specs_by_target = resolver.resolve
         end
@@ -367,6 +361,27 @@ module Pod
 
       private
 
+      # Returns the sources used to query for specifications
+      #
+      # @return [Array<Source>] the sources to be used in finding
+      #         specifications, as specified by the {#podfile}, defaulting to
+      #         {SourcesManager.master}
+      #
+      def sources
+        @sources ||= begin
+          sources = podfile.sources
+          if sources.empty?
+            SourcesManager.master
+          else
+            urls = sources.select { |s| s =~ /\A#{URI.regexp}\z/ }
+            url_sources = urls.map do |url|
+              SourcesManager.find_or_create_source_with_url!(url)
+            end
+            SourcesManager.sources(sources - urls) + url_sources
+          end
+        end
+      end
+
       # @!group Analysis sub-steps
 
       # Returns the path of the user project that the {TargetDefinition}

lib/cocoapods/sources_manager.rb

@@ -23,6 +23,44 @@ module Pod
         dirs.map { |repo| Source.new(repo) }
       end
 
+      # Returns the source whose {Source#url} is equal to `url`, adding the repo
+      # in a manner similarly to `pod repo add` if it is not found.
+      #
+      # @raise If no source with the given `url` could be created,
+      #
+      # @return [Source] The source whose {Source#url} is equal to `url`,
+      #
+      # @param [String] url
+      #        The URL of the source.
+      #
+      def find_or_create_source_with_url(url)
+        unless source = source_with_url(url)
+          name = URI(url).path.split('/')[-2]
+          UI.section("Cloning spec repo `#{name}` from `#{url}`") do
+            config.repos_dir.mkpath
+            Dir.chdir(config.repos_dir) do
+              command = "clone '#{url}' #{name}"
+              output = git(command)
+            end
+            check_version_information(config.repos_dir + name)
+            source = sources([name]).find
+
+          end
+        end
+        raise Informative, "Unable to add a source with url `#{url}`:\n\n" +
+          output unless source
+        source
+      end
+
+      # @return [Source] The source whose {Source#url} is equal to `url`.
+      #
+      # @param [String] url
+      #        The URL of the source.
+      #
+      def source_with_url(url)
+        aggregate.sources.find { |s| s.url == url }
+      end
+
       # @return [Array<Source>] The list of all the sources known to this
       #         installation of CocoaPods.
       #
@@ -31,7 +69,7 @@ module Pod
         dirs.map { |repo| Source.new(repo) }
       end
 
-      # @return [Source] The CocoaPods Master Repo source.
+      # @return [Array<Source>] The CocoaPods Master Repo source.
       #
       def master
         sources(['master'])