Merged pull request #1130 from joelmoss/outdated.

Command to list outdated gems

lib/bundler/cli.rb

@@ -272,6 +272,33 @@ def show(gem_name = nil)
     end
     map %w(list) => "show"
 
+    desc "outdated", "Returns a list of installed gems that are outdated."
+    long_desc <<-D
+      Outdated lists the names and versions of all gems that are outdated when compared to the source.
+      Calling outdated with [GEM [GEM]] will check only the given gems.
+    D
+    method_option "source", :type => :array, :banner => "Check against a specific source"
+    method_option "local", :type => :boolean, :banner =>
+      "Do not attempt to fetch gems remotely and use the gem cache instead"
+    def outdated(*gems)
+      sources = Array(options[:source])
+
+      if gems.empty? && sources.empty?
+        # We're doing a full update
+        definition = Bundler.definition(true)
+      else
+        definition = Bundler.definition(:gems => gems, :sources => sources)
+      end
+
+      options["local"] ? definition.resolve_with_cache! : definition.resolve_remotely!
+
+      definition.specs.each do |spec|
+        spec.source.fetch(spec) if spec.source.respond_to?(:fetch)
+        spec.source.outdated(spec)
+        Bundler.ui.debug "from #{spec.loaded_from} "
+      end
+    end
+
     desc "cache", "Cache all the gems to vendor/cache", :hide => true
     method_option "no-prune",  :type => :boolean, :banner => "Don't remove stale gems from the cache."
     def cache

lib/bundler/source.rb

@@ -78,6 +78,18 @@ def fetch(spec)
         end
       end
 
+      def outdated(spec)
+        installed_spec = installed_specs[spec.name]
+        installed_spec = installed_spec.first
+
+        if installed_spec && spec.version == installed_spec.version
+          Bundler.ui.debug "Up to date: #{spec.name} (#{installed_spec.version}) "
+          return
+        end
+
+        Bundler.ui.info "#{spec.name} (#{spec.version} > #{installed_spec.version}) "
+      end
+
       def install(spec)
         path = cached_gem(spec)
 

man/bundle.ronn

@@ -55,6 +55,9 @@ We divide `bundle` subcommands into primary commands and utilities.
 * `bundle show(1)`:
   Show the source location of a particular gem in the bundle
 
+* `bundle outdated(1)`:
+  Show all of the outdated gems in the current bundle
+
 * `bundle console(1)`:
   Start an IRB session in the context of the current bundle
 

spec/other/outdated_spec.rb

@@ -0,0 +1,46 @@
+require "spec_helper"
+
+describe "bundle outdated" do
+  before :each do
+    build_repo2
+
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+      gem "activesupport"
+      gem "rack-obama"
+    G
+  end
+
+  describe "with no arguments" do
+    it "returns list of outdated gems" do
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+
+      bundle "outdated"
+      out.should include("activesupport (3.0 > 2.3.5)")
+      out.should include("rack (1.2 > 1.0.0)")
+    end
+  end
+
+  describe "with --local option" do
+    it "doesn't hit repo2" do
+      FileUtils.rm_rf(gem_repo2)
+
+      bundle "outdated --local"
+      out.should_not match(/Fetching source index/)
+    end
+  end
+
+  describe "with specified gems" do
+    it "returns list of outdated gems" do
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+
+      bundle "outdated rack"
+      out.should_not include("activesupport (3.0 > 2.3.5)")
+      out.should include("rack (1.2 > 1.0.0)")
+    end
+  end
+end