Class: Gem::DependencyInstaller

Inherits:
Object
  • Object
show all
Extended by:
Deprecate
Includes:
UserInteraction
Defined in:
lib/rubygems/dependency_installer.rb

Overview

Installs a gem along with all its dependencies from local and remote gems.

Constant Summary collapse

DEFAULT_OPTIONS =

:nodoc:

{ # :nodoc:
  env_shebang: false,
  document: %w[ri],
  domain: :both, # HACK: dup
  force: false,
  format_executable: false, # HACK: dup
  ignore_dependencies: false,
  prerelease: false,
  security_policy: nil, # HACK: NoSecurity requires OpenSSL. AlmostNo? Low?
  wrappers: true,
  build_args: nil,
  build_docs_in_background: false,
  install_as_default: false,
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Deprecate

deprecate, next_rubygems_major_version, rubygems_deprecate, rubygems_deprecate_command, skip, skip=, skip_during

Methods included from UserInteraction

#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction, #verbose

Methods included from DefaultUserInteraction

ui, #ui, ui=, #ui=, use_ui, #use_ui

Methods included from Text

#clean_text, #format_text, #levenshtein_distance, #min3, #truncate_text

Constructor Details

#initialize(options = {}) ⇒ DependencyInstaller

Creates a new installer instance.

Options are:

:cache_dir

Alternate repository path to store .gem files in.

:domain

:local, :remote, or :both. :local only searches gems in the current directory. :remote searches only gems in Gem::sources. :both searches both.

:env_shebang

See Gem::Installer::new.

:force

See Gem::Installer#install.

:format_executable

See Gem::Installer#initialize.

:ignore_dependencies

Don’t install any dependencies.

:install_dir

See Gem::Installer#install.

:prerelease

Allow prerelease versions. See #install.

:security_policy

See Gem::Installer::new and Gem::Security.

:user_install

See Gem::Installer.new

:wrappers

See Gem::Installer::new

:build_args

See Gem::Installer::new



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# File 'lib/rubygems/dependency_installer.rb', line 68

def initialize(options = {})
  @only_install_dir = !options[:install_dir].nil?
  @install_dir = options[:install_dir] || Gem.dir
  @build_root = options[:build_root]

  options = DEFAULT_OPTIONS.merge options

  @bin_dir             = options[:bin_dir]
  @dev_shallow         = options[:dev_shallow]
  @development         = options[:development]
  @document            = options[:document]
  @domain              = options[:domain]
  @env_shebang         = options[:env_shebang]
  @force               = options[:force]
  @format_executable   = options[:format_executable]
  @ignore_dependencies = options[:ignore_dependencies]
  @prerelease          = options[:prerelease]
  @security_policy     = options[:security_policy]
  @user_install        = options[:user_install]
  @wrappers            = options[:wrappers]
  @build_args          = options[:build_args]
  @build_docs_in_background = options[:build_docs_in_background]
  @install_as_default = options[:install_as_default]
  @dir_mode = options[:dir_mode]
  @data_mode = options[:data_mode]
  @prog_mode = options[:prog_mode]

  # Indicates that we should not try to update any deps unless
  # we absolutely must.
  @minimal_deps = options[:minimal_deps]

  @available      = nil
  @installed_gems = []
  @toplevel_specs = nil

  @cache_dir = options[:cache_dir] || @install_dir

  @errors = []
end

Instance Attribute Details

#document ⇒ Object (readonly)

Documentation types. For use by the Gem.done_installing hook



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# File 'lib/rubygems/dependency_installer.rb', line 37

def document
  @document
end

#errors ⇒ Object (readonly)

Errors from SpecFetcher while searching for remote specifications



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# File 'lib/rubygems/dependency_installer.rb', line 42

def errors
  @errors
end

#installed_gems ⇒ Object (readonly)

List of gems installed by #install in alphabetic order



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# File 'lib/rubygems/dependency_installer.rb', line 47

def installed_gems
  @installed_gems
end

Instance Method Details

#consider_local? ⇒ Boolean

Indicated, based on the requested domain, if local gems should be considered.

Returns:

  • (Boolean) 


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# File 'lib/rubygems/dependency_installer.rb', line 112

def consider_local?
  @domain == :both || @domain == :local
end

#consider_remote? ⇒ Boolean

Indicated, based on the requested domain, if remote gems should be considered.

Returns:

  • (Boolean) 


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# File 'lib/rubygems/dependency_installer.rb', line 120

def consider_remote?
  @domain == :both || @domain == :remote
end

#find_gems_with_sources(dep, best_only = false) ⇒ Object

Returns a list of pairs of gemspecs and source_uris that match Gem::Dependency dep from both local (Dir.pwd) and remote (Gem.sources) sources. Gems are sorted with newer gems preferred over older gems, and local gems preferred over remote gems.



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# File 'lib/rubygems/dependency_installer.rb', line 130

def find_gems_with_sources(dep, best_only=false) # :nodoc:
  set = Gem::AvailableSet.new

  if consider_local?
    sl = Gem::Source::Local.new

    if spec = sl.find_gem(dep.name)
      if dep.matches_spec? spec
        set.add spec, sl
      end
    end
  end

  if consider_remote?
    begin
      # This is pulled from #spec_for_dependency to allow
      # us to filter tuples before fetching specs.
      tuples, errors = Gem::SpecFetcher.fetcher.search_for_dependency dep

      if best_only && !tuples.empty?
        tuples.sort! do |a,b|
          if b[0].version == a[0].version
            if b[0].platform != Gem::Platform::RUBY
              1
            else
              -1
            end
          else
            b[0].version <=> a[0].version
          end
        end
        tuples = [tuples.first]
      end

      specs = []
      tuples.each do |tup, source|
        spec = source.fetch_spec(tup)
      rescue Gem::RemoteFetcher::FetchError => e
        errors << Gem::SourceFetchProblem.new(source, e)
      else
        specs << [spec, source]
      end

      if @errors
        @errors += errors
      else
        @errors = errors
      end

      set << specs
    rescue Gem::RemoteFetcher::FetchError => e
      # FIX if there is a problem talking to the network, we either need to always tell
      # the user (no really_verbose) or fail hard, not silently tell them that we just
      # couldn't find their requested gem.
      verbose do
        "Error fetching remote data:\t\t#{e.message}\n" \
          "Falling back to local-only install"
      end
      @domain = :local
    end
  end

  set
end

#in_background(what) ⇒ Object

:nodoc:



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# File 'lib/rubygems/dependency_installer.rb', line 196

def in_background(what) # :nodoc:
  fork_happened = false
  if @build_docs_in_background && Process.respond_to?(:fork)
    begin
      Process.fork do
        yield
      end
      fork_happened = true
      say "#{what} in a background process."
    rescue NotImplementedError
    end
  end
  yield unless fork_happened
end

#install(dep_or_name, version = Gem::Requirement.default) ⇒ Object

Installs the gem dep_or_name and all its dependencies. Returns an Array of installed gem specifications.

If the :prerelease option is set and there is a prerelease for dep_or_name the prerelease version will be installed.

Unless explicitly specified as a prerelease dependency, prerelease gems that dep_or_name depend on will not be installed.

If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed separately.



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# File 'lib/rubygems/dependency_installer.rb', line 225

def install(dep_or_name, version = Gem::Requirement.default)
  request_set = resolve_dependencies dep_or_name, version

  @installed_gems = []

  options = {
    bin_dir: @bin_dir,
    build_args: @build_args,
    document: @document,
    env_shebang: @env_shebang,
    force: @force,
    format_executable: @format_executable,
    ignore_dependencies: @ignore_dependencies,
    prerelease: @prerelease,
    security_policy: @security_policy,
    user_install: @user_install,
    wrappers: @wrappers,
    build_root: @build_root,
    install_as_default: @install_as_default,
    dir_mode: @dir_mode,
    data_mode: @data_mode,
    prog_mode: @prog_mode,
  }
  options[:install_dir] = @install_dir if @only_install_dir

  request_set.install options do |_, installer|
    @installed_gems << installer.spec if installer
  end

  @installed_gems.sort!

  # Since this is currently only called for docs, we can be lazy and just say
  # it's documentation. Ideally the hook adder could decide whether to be in
  # the background or not, and what to call it.
  in_background "Installing documentation" do
    Gem.done_installing_hooks.each do |hook|
      hook.call self, @installed_gems
    end
  end unless Gem.done_installing_hooks.empty?

  @installed_gems
end

#install_development_deps ⇒ Object

:nodoc:



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# File 'lib/rubygems/dependency_installer.rb', line 268

def install_development_deps # :nodoc:
  if @development && @dev_shallow
    :shallow
  elsif @development
    :all
  else
    :none
  end
end

#resolve_dependencies(dep_or_name, version) ⇒ Object

:nodoc:



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# File 'lib/rubygems/dependency_installer.rb', line 278

def resolve_dependencies(dep_or_name, version) # :nodoc:
  request_set = Gem::RequestSet.new
  request_set.development         = @development
  request_set.development_shallow = @dev_shallow
  request_set.soft_missing = @force
  request_set.prerelease = @prerelease

  installer_set = Gem::Resolver::InstallerSet.new @domain
  installer_set.ignore_installed = (@minimal_deps == false) || @only_install_dir
  installer_set.force = @force

  if consider_local?
    if dep_or_name =~ /\.gem$/ && File.file?(dep_or_name)
      src = Gem::Source::SpecificFile.new dep_or_name
      installer_set.add_local dep_or_name, src.spec, src
      version = src.spec.version if version == Gem::Requirement.default
    elsif dep_or_name =~ /\.gem$/ # rubocop:disable Performance/RegexpMatch
      Dir[dep_or_name].each do |name|
        src = Gem::Source::SpecificFile.new name
        installer_set.add_local dep_or_name, src.spec, src
      rescue Gem::Package::FormatError
      end
      # else This is a dependency. InstallerSet handles this case
    end
  end

  dependency =
    if spec = installer_set.local?(dep_or_name)
      installer_set.remote = nil if spec.dependencies.none?
      Gem::Dependency.new spec.name, version
    elsif String === dep_or_name
      Gem::Dependency.new dep_or_name, version
    else
      dep_or_name
    end

  dependency.prerelease = @prerelease

  request_set.import [dependency]

  installer_set.add_always_install dependency

  request_set.always_install = installer_set.always_install
  request_set.remote = installer_set.consider_remote?

  if @ignore_dependencies
    installer_set.ignore_dependencies = true
    request_set.ignore_dependencies   = true
    request_set.soft_missing          = true
  end

  request_set.resolve installer_set

  @errors.concat request_set.errors

  request_set
end