1 files changed, 125 insertions, 0 deletions
diff --git a/lib/bundler/cli/update.rb b/lib/bundler/cli/update.rb
new file mode 100644
index 0000000000..d92ffd995f
--- /dev/null
+++ b/lib/bundler/cli/update.rb
@@ -0,0 +1,125 @@
+# frozen_string_literal: true
+
+module Bundler
+  class CLI::Update
+    attr_reader :options, :gems
+    def initialize(options, gems)
+      @options = options
+      @gems = gems
+    end
+
+    def run
+      Bundler.ui.level = "warn" if options[:quiet]
+
+      update_bundler = options[:bundler]
+
+      Bundler.self_manager.update_bundler_and_restart_with_it_if_needed(update_bundler) if update_bundler
+
+      Plugin.gemfile_install(Bundler.default_gemfile) if Bundler.settings[:plugins]
+
+      sources = Array(options[:source])
+      groups  = Array(options[:group]).map(&:to_sym)
+
+      full_update = gems.empty? && sources.empty? && groups.empty? && !options[:ruby] && !update_bundler
+
+      if full_update && !options[:all]
+        if Bundler.settings[:update_requires_all_flag]
+          raise InvalidOption, "To update everything, pass the `--all` flag."
+        end
+        SharedHelpers.feature_deprecated! "Pass --all to `bundle update` to update everything"
+      elsif !full_update && options[:all]
+        raise InvalidOption, "Cannot specify --all along with specific options."
+      end
+
+      conservative = options[:conservative]
+
+      if full_update
+        if conservative
+          Bundler.definition(conservative: conservative)
+        else
+          Bundler.definition(true)
+        end
+      else
+        unless Bundler.default_lockfile.exist?
+          raise GemfileLockNotFound, "This Bundle hasn't been installed yet. " \
+            "Run `bundle install` to update and install the bundled gems."
+        end
+        Bundler::CLI::Common.ensure_all_gems_in_lockfile!(gems)
+
+        if groups.any?
+          deps = Bundler.definition.dependencies.select {|d| (d.groups & groups).any? }
+          gems.concat(deps.map(&:name))
+        end
+
+        Bundler.definition(gems: gems, sources: sources, ruby: options[:ruby],
+                           conservative: conservative,
+                           bundler: update_bundler)
+      end
+
+      Bundler::CLI::Common.configure_gem_version_promoter(Bundler.definition, options)
+
+      Bundler::Fetcher.disable_endpoint = options["full-index"]
+
+      opts = options.dup
+      opts["update"] = true
+      opts["local"] = options[:local]
+      opts["force"] = options[:redownload] if options[:redownload]
+
+      Bundler.settings.set_command_option_if_given :jobs, opts["jobs"]
+      Bundler::CLI::Common.validate_cooldown!(options[:cooldown])
+      Bundler.settings.set_command_option_if_given :cooldown, options[:cooldown]
+
+      Bundler.definition.validate_runtime!
+
+      if locked_gems = Bundler.definition.locked_gems
+        previous_locked_info = locked_gems.specs.reduce({}) do |h, s|
+          h[s.name] = { spec: s, version: s.version, source: s.source.identifier }
+          h
+        end
+      end
+
+      installer = Installer.install Bundler.root, Bundler.definition, opts
+      Bundler.load.cache if Bundler.app_cache.exist?
+
+      if CLI::Common.clean_after_install?
+        require_relative "clean"
+        Bundler::CLI::Clean.new(options).run
+      end
+
+      if locked_gems
+        gems.each do |name|
+          locked_info = previous_locked_info[name]
+          next unless locked_info
+
+          locked_spec = locked_info[:spec]
+          new_spec = Bundler.definition.specs[name].first
+          unless new_spec
+            unless locked_spec.installable_on_platform?(Bundler.local_platform)
+              Bundler.ui.warn "Bundler attempted to update #{name} but it was not considered because it is for a different platform from the current one"
+            end
+
+            next
+          end
+
+          locked_source = locked_info[:source]
+          new_source = new_spec.source.identifier
+          next if locked_source != new_source
+
+          new_version = new_spec.version
+          locked_version = locked_info[:version]
+          if new_version < locked_version
+            Bundler.ui.warn "Note: #{name} version regressed from #{locked_version} to #{new_version}"
+          elsif new_version == locked_version
+            Bundler.ui.warn "Bundler attempted to update #{name} but its version stayed the same"
+          end
+        end
+      end
+
+      Bundler.ui.confirm "Bundle updated!"
+      Bundler::CLI::Common.output_without_groups_message(:update)
+      Bundler::CLI::Common.output_post_install_messages installer.post_install_messages
+
+      Bundler::CLI::Common.output_fund_metadata_summary
+    end
+  end
+end