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authoryugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-08-25 15:02:05 +0000
committeryugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-08-25 15:02:05 +0000
commit0dc342de848a642ecce8db697b8fecd83a63e117 (patch)
tree2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/lib/rubygems/uninstaller.rb
parentef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff)
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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diff --git a/trunk/lib/rubygems/uninstaller.rb b/trunk/lib/rubygems/uninstaller.rb
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+#--
+# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
+# All rights reserved.
+# See LICENSE.txt for permissions.
+#++
+
+require 'fileutils'
+require 'rubygems'
+require 'rubygems/dependency_list'
+require 'rubygems/doc_manager'
+require 'rubygems/user_interaction'
+
+##
+# An Uninstaller.
+
+class Gem::Uninstaller
+
+ include Gem::UserInteraction
+
+ ##
+ # Constructs an Uninstaller instance
+ #
+ # gem:: [String] The Gem name to uninstall
+
+ def initialize(gem, options = {})
+ @gem = gem
+ @version = options[:version] || Gem::Requirement.default
+ gem_home = options[:install_dir] || Gem.dir
+ @gem_home = File.expand_path gem_home
+ @force_executables = options[:executables]
+ @force_all = options[:all]
+ @force_ignore = options[:ignore]
+ @bin_dir = options[:bin_dir]
+ end
+
+ ##
+ # Performs the uninstall of the Gem. This removes the spec, the
+ # Gem directory, and the cached .gem file,
+
+ def uninstall
+ list = Gem.source_index.search(/^#{@gem}$/, @version)
+
+ if list.empty? then
+ raise Gem::InstallError, "Unknown gem #{@gem} #{@version}"
+ elsif list.size > 1 && @force_all
+ remove_all(list.dup)
+ remove_executables(list.last)
+ elsif list.size > 1
+ say
+ gem_names = list.collect {|gem| gem.full_name} + ["All versions"]
+ gem_name, index =
+ choose_from_list("Select gem to uninstall:", gem_names)
+ if index == list.size
+ remove_all(list.dup)
+ remove_executables(list.last)
+ elsif index >= 0 && index < list.size
+ to_remove = list[index]
+ remove(to_remove, list)
+ remove_executables(to_remove)
+ else
+ say "Error: must enter a number [1-#{list.size+1}]"
+ end
+ else
+ remove(list[0], list.dup)
+ remove_executables(list.last)
+ end
+ end
+
+ ##
+ # Removes installed executables and batch files (windows only) for
+ # +gemspec+.
+
+ def remove_executables(gemspec)
+ return if gemspec.nil?
+
+ if gemspec.executables.size > 0 then
+ bindir = @bin_dir ? @bin_dir : (Gem.bindir @gem_home)
+
+ list = Gem.source_index.search(gemspec.name).delete_if { |spec|
+ spec.version == gemspec.version
+ }
+
+ executables = gemspec.executables.clone
+
+ list.each do |spec|
+ spec.executables.each do |exe_name|
+ executables.delete(exe_name)
+ end
+ end
+
+ return if executables.size == 0
+
+ answer = if @force_executables.nil? then
+ ask_yes_no("Remove executables:\n" \
+ "\t#{gemspec.executables.join(", ")}\n\nin addition to the gem?",
+ true) # " # appease ruby-mode - don't ask
+ else
+ @force_executables
+ end
+
+ unless answer then
+ say "Executables and scripts will remain installed."
+ else
+ raise Gem::FilePermissionError, bindir unless File.writable? bindir
+
+ gemspec.executables.each do |exe_name|
+ say "Removing #{exe_name}"
+ FileUtils.rm_f File.join(bindir, exe_name)
+ FileUtils.rm_f File.join(bindir, "#{exe_name}.bat")
+ end
+ end
+ end
+ end
+
+ ##
+ # Removes all gems in +list+.
+ #
+ # NOTE: removes uninstalled gems from +list+.
+
+ def remove_all(list)
+ list.dup.each { |spec| remove spec, list }
+ end
+
+ ##
+ # spec:: the spec of the gem to be uninstalled
+ # list:: the list of all such gems
+ #
+ # Warning: this method modifies the +list+ parameter. Once it has
+ # uninstalled a gem, it is removed from that list.
+
+ def remove(spec, list)
+ unless dependencies_ok? spec then
+ raise Gem::DependencyRemovalException,
+ "Uninstallation aborted due to dependent gem(s)"
+ end
+
+ unless path_ok? spec then
+ e = Gem::GemNotInHomeException.new \
+ "Gem is not installed in directory #{@gem_home}"
+ e.spec = spec
+
+ raise e
+ end
+
+ raise Gem::FilePermissionError, spec.installation_path unless
+ File.writable?(spec.installation_path)
+
+ FileUtils.rm_rf spec.full_gem_path
+
+ original_platform_name = [
+ spec.name, spec.version, spec.original_platform].join '-'
+
+ spec_dir = File.join spec.installation_path, 'specifications'
+ gemspec = File.join spec_dir, "#{spec.full_name}.gemspec"
+
+ unless File.exist? gemspec then
+ gemspec = File.join spec_dir, "#{original_platform_name}.gemspec"
+ end
+
+ FileUtils.rm_rf gemspec
+
+ cache_dir = File.join spec.installation_path, 'cache'
+ gem = File.join cache_dir, "#{spec.full_name}.gem"
+
+ unless File.exist? gem then
+ gem = File.join cache_dir, "#{original_platform_name}.gem"
+ end
+
+ FileUtils.rm_rf gem
+
+ Gem::DocManager.new(spec).uninstall_doc
+
+ say "Successfully uninstalled #{spec.full_name}"
+
+ list.delete spec
+ end
+
+ def path_ok?(spec)
+ full_path = File.join @gem_home, 'gems', spec.full_name
+ original_path = File.join @gem_home, 'gems', spec.original_name
+
+ full_path == spec.full_gem_path || original_path == spec.full_gem_path
+ end
+
+ def dependencies_ok?(spec)
+ return true if @force_ignore
+
+ source_index = Gem::SourceIndex.from_installed_gems
+ deplist = Gem::DependencyList.from_source_index source_index
+ deplist.ok_to_remove?(spec.full_name) || ask_if_ok(spec)
+ end
+
+ def ask_if_ok(spec)
+ msg = ['']
+ msg << 'You have requested to uninstall the gem:'
+ msg << "\t#{spec.full_name}"
+ spec.dependent_gems.each do |gem,dep,satlist|
+ msg <<
+ ("#{gem.name}-#{gem.version} depends on " +
+ "[#{dep.name} (#{dep.version_requirements})]")
+ end
+ msg << 'If you remove this gems, one or more dependencies will not be met.'
+ msg << 'Continue with Uninstall?'
+ return ask_yes_no(msg.join("\n"), true)
+ end
+
+end
+