Class: Fastlane::FastlaneRequire

Inherits:
Object
  • Object
show all
Defined in:
fastlane/lib/fastlane/fastlane_require.rb

Class Method Summary collapse

Class Method Details

.find_gem_name(user_supplied_name) ⇒ Object


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# File 'fastlane/lib/fastlane/fastlane_require.rb', line 60

def find_gem_name(user_supplied_name)
  fetcher = Gem::SpecFetcher.fetcher
  gems = fetcher.suggest_gems_from_name(user_supplied_name)

  return gems.first
end

.format_gem_require_name(gem_name) ⇒ Object


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# File 'fastlane/lib/fastlane/fastlane_require.rb', line 67

def format_gem_require_name(gem_name)
  # from "fastlane-plugin-xcversion" to "fastlane/plugin/xcversion"
  gem_name = gem_name.tr("-", "/") if gem_name.start_with?("fastlane-plugin-")

  return gem_name
end

.gem_installed?(name, req = Gem::Requirement.default) ⇒ Boolean

Returns:


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# File 'fastlane/lib/fastlane/fastlane_require.rb', line 41

def gem_installed?(name, req = Gem::Requirement.default)
  installed = Gem::Specification.any? { |s| s.name == name and req =~ s.version }
  return true if installed

  # In special cases a gem is already preinstalled, e.g. YAML.
  # To find out we try to load a gem with that name in a child process
  # (so we don't actually load anything we don't want to load)
  # See https://github.com/fastlane/fastlane/issues/6951
  require_tester = <<-RB.gsub(/^ */, '')
    begin
      require ARGV.first
    rescue LoadError
      exit(1)
    end
  RB
  system(RbConfig.ruby, "-e", require_tester.lines.map(&:chomp).join("; "), name)
  return $?.success?
end

.install_gem_if_needed(gem_name: nil, require_gem: true) ⇒ Object


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# File 'fastlane/lib/fastlane/fastlane_require.rb', line 4

def install_gem_if_needed(gem_name: nil, require_gem: true)
  gem_require_name = format_gem_require_name(gem_name)

  # check if it's installed
  if gem_installed?(gem_name)
    UI.success("gem '#{gem_name}' is already installed") if FastlaneCore::Globals.verbose?
    require gem_require_name if require_gem
    return true
  end

  if Helper.bundler?
    # User uses bundler, we don't want to install gems on the fly here
    # Instead tell the user how to add it to their Gemfile
    UI.important("Missing gem '#{gem_name}', please add the following to your local Gemfile:")
    UI.important("")
    UI.command_output("gem \"#{gem_name}\"")
    UI.important("")
    UI.user_error!("Add 'gem \"#{gem_name}\"' to your Gemfile and restart fastlane") unless Helper.test?
  end

  require "rubygems/command_manager"
  installer = Gem::CommandManager.instance[:install]

  UI.important("Installing Ruby gem '#{gem_name}'...")

  spec_name = self.find_gem_name(gem_name)
  UI.important("Found gem \"#{spec_name}\" instead of the required name \"#{gem_name}\"") if spec_name != gem_name

  return if Helper.test?

  # We install the gem like this because we also want to gem to be available to be required
  # at this point. If we were to shell out, this wouldn't be the case
  installer.install_gem(spec_name, Gem::Requirement.default)
  UI.success("Successfully installed '#{gem_name}'")
  require gem_require_name if require_gem
end