1 files changed, 36 insertions, 0 deletions
diff --git a/lib/bundler/cli/pristine.rb b/lib/bundler/cli/pristine.rb
new file mode 100644
index 0000000000..10d03b4b41
--- /dev/null
+++ b/lib/bundler/cli/pristine.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+require "bundler/cli/common"
+
+module Bundler
+  class CLI::Pristine
+    def run
+      definition = Bundler.definition
+      definition.validate_runtime!
+      installer = Bundler::Installer.new(Bundler.root, definition)
+
+      Bundler.load.specs.each do |spec|
+        next if spec.name == "bundler" # Source::Rubygems doesn't install bundler
+
+        gem_name = "#{spec.name} (#{spec.version}#{spec.git_version})"
+        gem_name += " (#{spec.platform})" if !spec.platform.nil? && spec.platform != Gem::Platform::RUBY
+
+        case source = spec.source
+        when Source::Rubygems
+          cached_gem = spec.cache_file
+          unless File.exist?(cached_gem)
+            Bundler.ui.error("Failed to pristine #{gem_name}. Cached gem #{cached_gem} does not exist.")
+            next
+          end
+        when Source::Git
+          source.remote!
+        else
+          Bundler.ui.warn("Cannot pristine #{gem_name}. Gem is sourced from local path.")
+          next
+        end
+        FileUtils.rm_rf spec.full_gem_path
+
+        Bundler::GemInstaller.new(spec, installer, false, 0, true).install_from_spec
+      end
+    end
+  end
+end