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Edit File : uninstaller.rb \| Size : 8.83 KB
# frozen_string_literal: true #-- # 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/rdoc' require 'rubygems/user_interaction' ## # An Uninstaller. # # The uninstaller fires pre and post uninstall hooks. Hooks can be added # either through a rubygems_plugin.rb file in an installed gem or via a # rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb # file. See Gem.pre_uninstall and Gem.post_uninstall for details. class Gem::Uninstaller include Gem::UserInteraction ## # The directory a gem's executables will be installed into attr_reader :bin_dir ## # The gem repository the gem will be installed into attr_reader :gem_home ## # The Gem::Specification for the gem being uninstalled, only set during # #uninstall_gem attr_reader :spec ## # Constructs an uninstaller that will uninstall +gem+ def initialize(gem, options = {}) # TODO document the valid options @gem = gem @version = options[:version] \|\| Gem::Requirement.default @gem_home = File.realpath(options[:install_dir] \|\| Gem.dir) @force_executables = options[:executables] @force_all = options[:all] @force_ignore = options[:ignore] @bin_dir = options[:bin_dir] @format_executable = options[:format_executable] @abort_on_dependent = options[:abort_on_dependent] # Indicate if development dependencies should be checked when # uninstalling. (default: false) # @check_dev = options[:check_dev] if options[:force] @force_all = true @force_ignore = true end # only add user directory if install_dir is not set @user_install = false @user_install = options[:user_install] unless options[:install_dir] end ## # Performs the uninstall of the gem. This removes the spec, the Gem # directory, and the cached .gem file. def uninstall dependency = Gem::Dependency.new @gem, @version list = [] dirs = Gem::Specification.dirs + [Gem.default_specifications_dir] Gem::Specification.each_spec dirs do \|spec\| next unless dependency.matches_spec? spec list << spec end if list.empty? raise Gem::InstallError, "gem #{@gem.inspect} is not installed" end default_specs, list = list.partition do \|spec\| spec.default_gem? end default_specs.each do \|default_spec\| say "Gem #{default_spec.full_name} cannot be uninstalled because it is a default gem" end list, other_repo_specs = list.partition do \|spec\| @gem_home == spec.base_dir or (@user_install and spec.base_dir == Gem.user_dir) end list.sort! if list.empty? return unless other_repo_specs.any? other_repos = other_repo_specs.map { \|spec\| spec.base_dir }.uniq message = ["#{@gem} is not installed in GEM_HOME, try:"] message.concat other_repos.map { \|repo\| "\tgem uninstall -i #{repo} #{@gem}" } raise Gem::InstallError, message.join("\n") elsif @force_all remove_all list elsif list.size > 1 gem_names = list.map { \|gem\| gem.full_name } gem_names << "All versions" say _, index = choose_from_list "Select gem to uninstall:", gem_names if index == list.size remove_all list elsif index >= 0 && index < list.size uninstall_gem list[index] else say "Error: must enter a number [1-#{list.size + 1}]" end else uninstall_gem list.first end end ## # Uninstalls gem +spec+ def uninstall_gem(spec) @spec = spec unless dependencies_ok? spec if abort_on_dependent? \|\| !ask_if_ok(spec) raise Gem::DependencyRemovalException, "Uninstallation aborted due to dependent gem(s)" end end Gem.pre_uninstall_hooks.each do \|hook\| hook.call self end remove_executables @spec remove @spec Gem.post_uninstall_hooks.each do \|hook\| hook.call self end @spec = nil end ## # Removes installed executables and batch files (windows only) for # +gemspec+. def remove_executables(spec) return if spec.nil? or spec.executables.empty? executables = spec.executables.clone # Leave any executables created by other installed versions # of this gem installed. list = Gem::Specification.find_all do \|s\| s.name == spec.name && s.version != spec.version end list.each do \|s\| s.executables.each do \|exe_name\| executables.delete exe_name end end return if executables.empty? executables = executables.map { \|exec\| formatted_program_filename exec } remove = if @force_executables.nil? ask_yes_no("Remove executables:\n" + "\t#{executables.join ', '}\n\n" + "in addition to the gem?", true) else @force_executables end if remove bin_dir = @bin_dir \|\| Gem.bindir(spec.base_dir) raise Gem::FilePermissionError, bin_dir unless File.writable? bin_dir executables.each do \|exe_name\| say "Removing #{exe_name}" exe_file = File.join bin_dir, exe_name safe_delete { FileUtils.rm exe_file } safe_delete { FileUtils.rm "#{exe_file}.bat" } end else say "Executables and scripts will remain installed." end end ## # Removes all gems in +list+. # # NOTE: removes uninstalled gems from +list+. def remove_all(list) list.each { \|spec\| uninstall_gem spec } 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) unless path_ok?(@gem_home, spec) or (@user_install and path_ok?(Gem.user_dir, spec)) e = Gem::GemNotInHomeException.new \ "Gem '#{spec.full_name}' is not installed in directory #{@gem_home}" e.spec = spec raise e end raise Gem::FilePermissionError, spec.base_dir unless File.writable?(spec.base_dir) safe_delete { FileUtils.rm_r spec.full_gem_path } safe_delete { FileUtils.rm_r spec.extension_dir } old_platform_name = spec.original_name gem = spec.cache_file gem = File.join(spec.cache_dir, "#{old_platform_name}.gem") unless File.exist? gem safe_delete { FileUtils.rm_r gem } Gem::RDoc.new(spec).remove gemspec = spec.spec_file unless File.exist? gemspec gemspec = File.join(File.dirname(gemspec), "#{old_platform_name}.gemspec") end safe_delete { FileUtils.rm_r gemspec } say "Successfully uninstalled #{spec.full_name}" Gem::Specification.reset end ## # Is +spec+ in +gem_dir+? def path_ok?(gem_dir, spec) full_path = File.join gem_dir, 'gems', spec.full_name original_path = File.join gem_dir, 'gems', spec.original_name full_path == spec.full_gem_path \|\| original_path == spec.full_gem_path end ## # Returns true if it is OK to remove +spec+ or this is a forced # uninstallation. def dependencies_ok?(spec) # :nodoc: return true if @force_ignore deplist = Gem::DependencyList.from_specs deplist.ok_to_remove?(spec.full_name, @check_dev) end ## # Should the uninstallation abort if a dependency will go unsatisfied? # # See ::new. def abort_on_dependent? # :nodoc: @abort_on_dependent end ## # Asks if it is OK to remove +spec+. Returns true if it is OK. def ask_if_ok(spec) # :nodoc: msg = [''] msg << 'You have requested to uninstall the gem:' msg << "\t#{spec.full_name}" msg << '' siblings = Gem::Specification.select do \|s\| s.name == spec.name && s.full_name != spec.full_name end spec.dependent_gems.each do \|dep_spec, dep, satlist\| unless siblings.any? { \|s\| s.satisfies_requirement? dep } msg << "#{dep_spec.name}-#{dep_spec.version} depends on #{dep}" end end msg << 'If you remove this gem, these dependencies will not be met.' msg << 'Continue with Uninstall?' return ask_yes_no(msg.join("\n"), false) end ## # Returns the formatted version of the executable +filename+ def formatted_program_filename(filename) # :nodoc: # TODO perhaps the installer should leave a small manifest # of what it did for us to find rather than trying to recreate # it again. if @format_executable require 'rubygems/installer' Gem::Installer.exec_format % File.basename(filename) else filename end end def safe_delete(&block) block.call rescue Errno::ENOENT nil rescue Errno::EPERM e = Gem::UninstallError.new e.spec = @spec raise e end end Back

Edit File : uninstaller.rb | Size : 8.83 KB

# frozen_string_literal: true
#--
# 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/rdoc'
require 'rubygems/user_interaction'

##
# An Uninstaller.
#
# The uninstaller fires pre and post uninstall hooks.  Hooks can be added
# either through a rubygems_plugin.rb file in an installed gem or via a
# rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb
# file.  See Gem.pre_uninstall and Gem.post_uninstall for details.

class Gem::Uninstaller

include Gem::UserInteraction

##
  # The directory a gem's executables will be installed into

attr_reader :bin_dir

##
  # The gem repository the gem will be installed into

attr_reader :gem_home

##
  # The Gem::Specification for the gem being uninstalled, only set during
  # #uninstall_gem

attr_reader :spec

##
  # Constructs an uninstaller that will uninstall +gem+

def initialize(gem, options = {})
    # TODO document the valid options
    @gem                = gem
    @version            = options[:version] || Gem::Requirement.default
    @gem_home           = File.realpath(options[:install_dir] || Gem.dir)
    @force_executables  = options[:executables]
    @force_all          = options[:all]
    @force_ignore       = options[:ignore]
    @bin_dir            = options[:bin_dir]
    @format_executable  = options[:format_executable]
    @abort_on_dependent = options[:abort_on_dependent]

# Indicate if development dependencies should be checked when
    # uninstalling. (default: false)
    #
    @check_dev = options[:check_dev]

if options[:force]
      @force_all = true
      @force_ignore = true
    end

# only add user directory if install_dir is not set
    @user_install = false
    @user_install = options[:user_install] unless options[:install_dir]
  end

##
  # Performs the uninstall of the gem.  This removes the spec, the Gem
  # directory, and the cached .gem file.

def uninstall
    dependency = Gem::Dependency.new @gem, @version

list = []

dirs =
      Gem::Specification.dirs +
      [Gem.default_specifications_dir]

Gem::Specification.each_spec dirs do |spec|
      next unless dependency.matches_spec? spec

list << spec
    end

if list.empty?
      raise Gem::InstallError, "gem #{@gem.inspect} is not installed"
    end

default_specs, list = list.partition do |spec|
      spec.default_gem?
    end

default_specs.each do |default_spec|
      say "Gem #{default_spec.full_name} cannot be uninstalled because it is a default gem"
    end

list, other_repo_specs = list.partition do |spec|
      @gem_home == spec.base_dir or
        (@user_install and spec.base_dir == Gem.user_dir)
    end

list.sort!

if list.empty?
      return unless other_repo_specs.any?

other_repos = other_repo_specs.map { |spec| spec.base_dir }.uniq

message = ["#{@gem} is not installed in GEM_HOME, try:"]
      message.concat other_repos.map { |repo|
        "\tgem uninstall -i #{repo} #{@gem}"
      }

raise Gem::InstallError, message.join("\n")
    elsif @force_all
      remove_all list

elsif list.size > 1
      gem_names = list.map { |gem| gem.full_name }
      gem_names << "All versions"

say
      _, index = choose_from_list "Select gem to uninstall:", gem_names

if index == list.size
        remove_all list
      elsif index >= 0 && index < list.size
        uninstall_gem list[index]
      else
        say "Error: must enter a number [1-#{list.size + 1}]"
      end
    else
      uninstall_gem list.first
    end
  end

##
  # Uninstalls gem +spec+

def uninstall_gem(spec)
    @spec = spec

unless dependencies_ok? spec
      if abort_on_dependent? || !ask_if_ok(spec)
        raise Gem::DependencyRemovalException,
          "Uninstallation aborted due to dependent gem(s)"
      end
    end

Gem.pre_uninstall_hooks.each do |hook|
      hook.call self
    end

remove_executables @spec
    remove @spec

Gem.post_uninstall_hooks.each do |hook|
      hook.call self
    end

@spec = nil
  end

##
  # Removes installed executables and batch files (windows only) for
  # +gemspec+.

def remove_executables(spec)
    return if spec.nil? or spec.executables.empty?

executables = spec.executables.clone

# Leave any executables created by other installed versions
    # of this gem installed.

list = Gem::Specification.find_all do |s|
      s.name == spec.name && s.version != spec.version
    end

list.each do |s|
      s.executables.each do |exe_name|
        executables.delete exe_name
      end
    end

return if executables.empty?

executables = executables.map { |exec| formatted_program_filename exec }

remove = if @force_executables.nil?
               ask_yes_no("Remove executables:\n" +
                          "\t#{executables.join ', '}\n\n" +
                          "in addition to the gem?",
                          true)
             else
               @force_executables
             end

if remove
      bin_dir = @bin_dir || Gem.bindir(spec.base_dir)

raise Gem::FilePermissionError, bin_dir unless File.writable? bin_dir

executables.each do |exe_name|
        say "Removing #{exe_name}"

exe_file = File.join bin_dir, exe_name

safe_delete { FileUtils.rm exe_file }
        safe_delete { FileUtils.rm "#{exe_file}.bat" }
      end
    else
      say "Executables and scripts will remain installed."
    end
  end

##
  # Removes all gems in +list+.
  #
  # NOTE: removes uninstalled gems from +list+.

def remove_all(list)
    list.each { |spec| uninstall_gem spec }
  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)
    unless path_ok?(@gem_home, spec) or
           (@user_install and path_ok?(Gem.user_dir, spec))
      e = Gem::GemNotInHomeException.new \
            "Gem '#{spec.full_name}' is not installed in directory #{@gem_home}"
      e.spec = spec

raise e
    end

raise Gem::FilePermissionError, spec.base_dir unless
      File.writable?(spec.base_dir)

safe_delete { FileUtils.rm_r spec.full_gem_path }
    safe_delete { FileUtils.rm_r spec.extension_dir }

old_platform_name = spec.original_name

gem = spec.cache_file
    gem = File.join(spec.cache_dir, "#{old_platform_name}.gem") unless
      File.exist? gem

safe_delete { FileUtils.rm_r gem }

Gem::RDoc.new(spec).remove

gemspec = spec.spec_file

unless File.exist? gemspec
      gemspec = File.join(File.dirname(gemspec), "#{old_platform_name}.gemspec")
    end

safe_delete { FileUtils.rm_r gemspec }
    say "Successfully uninstalled #{spec.full_name}"

Gem::Specification.reset
  end

##
  # Is +spec+ in +gem_dir+?

def path_ok?(gem_dir, spec)
    full_path     = File.join gem_dir, 'gems', spec.full_name
    original_path = File.join gem_dir, 'gems', spec.original_name

full_path == spec.full_gem_path || original_path == spec.full_gem_path
  end

##
  # Returns true if it is OK to remove +spec+ or this is a forced
  # uninstallation.

def dependencies_ok?(spec) # :nodoc:
    return true if @force_ignore

deplist = Gem::DependencyList.from_specs
    deplist.ok_to_remove?(spec.full_name, @check_dev)
  end

##
  # Should the uninstallation abort if a dependency will go unsatisfied?
  #
  # See ::new.

def abort_on_dependent? # :nodoc:
    @abort_on_dependent
  end

##
  # Asks if it is OK to remove +spec+.  Returns true if it is OK.

def ask_if_ok(spec) # :nodoc:
    msg = ['']
    msg << 'You have requested to uninstall the gem:'
    msg << "\t#{spec.full_name}"
    msg << ''

siblings = Gem::Specification.select do |s|
      s.name == spec.name && s.full_name != spec.full_name
    end

spec.dependent_gems.each do |dep_spec, dep, satlist|
      unless siblings.any? { |s| s.satisfies_requirement? dep }
        msg << "#{dep_spec.name}-#{dep_spec.version} depends on #{dep}"
      end
    end

msg << 'If you remove this gem, these dependencies will not be met.'
    msg << 'Continue with Uninstall?'
    return ask_yes_no(msg.join("\n"), false)
  end

##
  # Returns the formatted version of the executable +filename+

def formatted_program_filename(filename) # :nodoc:
    # TODO perhaps the installer should leave a small manifest
    # of what it did for us to find rather than trying to recreate
    # it again.
    if @format_executable
      require 'rubygems/installer'
      Gem::Installer.exec_format % File.basename(filename)
    else
      filename
    end
  end

def safe_delete(&block)
    block.call
  rescue Errno::ENOENT
    nil
  rescue Errno::EPERM
    e = Gem::UninstallError.new
    e.spec = @spec

raise e
  end

end

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