1 files changed, 164 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/commands/uninstall_command.rb b/jni/ruby/lib/rubygems/commands/uninstall_command.rb
new file mode 100644
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--- /dev/null
+++ b/jni/ruby/lib/rubygems/commands/uninstall_command.rb
@@ -0,0 +1,164 @@
+require 'rubygems/command'
+require 'rubygems/version_option'
+require 'rubygems/uninstaller'
+require 'fileutils'
+
+##
+# Gem uninstaller command line tool
+#
+# See `gem help uninstall`
+
+class Gem::Commands::UninstallCommand < Gem::Command
+
+  include Gem::VersionOption
+
+  def initialize
+    super 'uninstall', 'Uninstall gems from the local repository',
+          :version => Gem::Requirement.default, :user_install => true,
+          :check_dev => false, :vendor => false
+
+    add_option('-a', '--[no-]all',
+      'Uninstall all matching versions'
+      ) do |value, options|
+      options[:all] = value
+    end
+
+    add_option('-I', '--[no-]ignore-dependencies',
+               'Ignore dependency requirements while',
+               'uninstalling') do |value, options|
+      options[:ignore] = value
+    end
+
+    add_option('-D', '--[no-]-check-development',
+               'Check development dependencies while uninstalling',
+               '(default: false)') do |value, options|
+      options[:check_dev] = value
+    end
+
+    add_option('-x', '--[no-]executables',
+                 'Uninstall applicable executables without',
+                 'confirmation') do |value, options|
+      options[:executables] = value
+    end
+
+    add_option('-i', '--install-dir DIR',
+               'Directory to uninstall gem from') do |value, options|
+      options[:install_dir] = File.expand_path(value)
+    end
+
+    add_option('-n', '--bindir DIR',
+               'Directory to remove binaries from') do |value, options|
+      options[:bin_dir] = File.expand_path(value)
+    end
+
+    add_option('--[no-]user-install',
+               'Uninstall from user\'s home directory',
+               'in addition to GEM_HOME.') do |value, options|
+      options[:user_install] = value
+    end
+
+    add_option('--[no-]format-executable',
+               'Assume executable names match Ruby\'s prefix and suffix.') do |value, options|
+      options[:format_executable] = value
+    end
+
+    add_option('--[no-]force',
+               'Uninstall all versions of the named gems',
+               'ignoring dependencies') do |value, options|
+      options[:force] = value
+    end
+
+    add_option('--[no-]abort-on-dependent',
+               'Prevent uninstalling gems that are',
+               'depended on by other gems.') do |value, options|
+      options[:abort_on_dependent] = value
+    end
+
+    add_version_option
+    add_platform_option
+
+    add_option('--vendor',
+               'Uninstall gem from the vendor directory.',
+               'Only for use by gem repackagers.') do |value, options|
+      unless Gem.vendor_dir then
+        raise OptionParser::InvalidOption.new 'your platform is not supported'
+      end
+
+      alert_warning 'Use your OS package manager to uninstall vendor gems'
+      options[:vendor] = true
+      options[:install_dir] = Gem.vendor_dir
+    end
+  end
+
+  def arguments # :nodoc:
+    "GEMNAME       name of gem to uninstall"
+  end
+
+  def defaults_str # :nodoc:
+    "--version '#{Gem::Requirement.default}' --no-force " +
+    "--user-install"
+  end
+
+  def description # :nodoc:
+    <<-EOF
+The uninstall command removes a previously installed gem.
+
+RubyGems will ask for confirmation if you are attempting to uninstall a gem
+that is a dependency of an existing gem.  You can use the
+--ignore-dependencies option to skip this check.
+    EOF
+  end
+
+  def usage # :nodoc:
+    "#{program_name} GEMNAME [GEMNAME ...]"
+  end
+
+  def execute
+    if options[:all] and not options[:args].empty? then
+      uninstall_specific
+    elsif options[:all] then
+      uninstall_all
+    else
+      uninstall_specific
+    end
+  end
+
+  def uninstall_all
+    specs = Gem::Specification.reject { |spec| spec.default_gem? }
+
+    specs.each do |spec|
+      options[:version] = spec.version
+
+      begin
+        Gem::Uninstaller.new(spec.name, options).uninstall
+      rescue Gem::InstallError
+      end
+    end
+
+    alert "Uninstalled all gems in #{options[:install_dir]}"
+  end
+
+  def uninstall_specific
+    deplist = Gem::DependencyList.new
+
+    get_all_gem_names.uniq.each do |name|
+      Gem::Specification.find_all_by_name(name).each do |spec|
+        deplist.add spec
+      end
+    end
+
+    deps = deplist.strongly_connected_components.flatten.reverse
+
+    deps.map(&:name).uniq.each do |gem_name|
+      begin
+        Gem::Uninstaller.new(gem_name, options).uninstall
+      rescue Gem::GemNotInHomeException => e
+        spec = e.spec
+        alert("In order to remove #{spec.name}, please execute:\n" +
+              "\tgem uninstall #{spec.name} --install-dir=#{spec.installation_path}")
+      end
+    end
+  end
+
+end
+