### Home Classes Methods

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- lib/bundler/installer.rb

### Parent

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### Methods

- ::install
- ::new
- #generate_bundler_executable_stubs
- #generate_standalone_bundler_executable_stubs
- #run

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No matching classes.

# Bundler::Installer

### Attributes

ambiguous_gems[RW]
post_install_messages[R]

### Public Class Methods

install(root, definition, options = {}) click to toggle source

Begins the installation process for Bundler. For more information see the run method on this class.

    # File lib/bundler/installer.rb, line 22
    def self.install(root, definition, options = {})
      installer = new(root, definition)
      Plugin.hook(Plugin::Events::GEM_BEFORE_INSTALL_ALL, definition.dependencies)
      installer.run(options)
      Plugin.hook(Plugin::Events::GEM_AFTER_INSTALL_ALL, definition.dependencies)
      installer
    end

new(root, definition) click to toggle source

    # File lib/bundler/installer.rb, line 30
    def initialize(root, definition)
      @root = root
      @definition = definition
      @post_install_messages = {}
    end

### Public Instance Methods

generate_bundler_executable_stubs(spec, options = {}) click to toggle source

    # File lib/bundler/installer.rb, line 99
    def generate_bundler_executable_stubs(spec, options = {})
      if options[:binstubs_cmd] && spec.executables.empty?
        options = {}
        spec.runtime_dependencies.each do |dep|
          bins = @definition.specs[dep].first.executables
          options[dep.name] = bins unless bins.empty?
        end
        if options.any?
          Bundler.ui.warn "#{spec.name} has no executables, but you may want "              "one from a gem it depends on."
          options.each {|name, bins| Bundler.ui.warn "  #{name} has: #{bins.join(", ")}" }
        else
          Bundler.ui.warn "There are no executables for the gem #{spec.name}."
        end
        return
      end

      # double-assignment to avoid warnings about variables that will be used by ERB
      bin_path = Bundler.bin_path
      bin_path = bin_path
      relative_gemfile_path = Bundler.default_gemfile.relative_path_from(bin_path)
      relative_gemfile_path = relative_gemfile_path
      ruby_command = Thor::Util.ruby_command
      ruby_command = ruby_command
      template_path = File.expand_path("../templates/Executable", __FILE__)
      if spec.name == "bundler"
        template_path += ".bundler"
        spec.executables = %(bundle)
      end
      template = File.read(template_path)

      exists = []
      spec.executables.each do |executable|
        binstub_path = "#{bin_path}/#{executable}"
        if File.exist?(binstub_path) && !options[:force]
          exists << executable
          next
        end

        File.open(binstub_path, "w", 0o777 & ~File.umask) do |f|
          if RUBY_VERSION >= "2.6"
            f.puts ERB.new(template, :trim_mode => "-").result(binding)
          else
            f.puts ERB.new(template, nil, "-").result(binding)
          end
        end
      end

      if options[:binstubs_cmd] && exists.any?
        case exists.size
        when 1
          Bundler.ui.warn "Skipped #{exists[0]} since it already exists."
        when 2
          Bundler.ui.warn "Skipped #{exists.join(" and ")} since they already exist."
        else
          items = exists[0...-1].empty? ? nil : exists[0...-1].join(", ")
          skipped = [items, exists[-1]].compact.join(" and ")
          Bundler.ui.warn "Skipped #{skipped} since they already exist."
        end
        Bundler.ui.warn "If you want to overwrite skipped stubs, use --force."
      end
    end

generate_standalone_bundler_executable_stubs(spec) click to toggle source

    # File lib/bundler/installer.rb, line 162
    def generate_standalone_bundler_executable_stubs(spec)
      # double-assignment to avoid warnings about variables that will be used by ERB
      bin_path = Bundler.bin_path
      unless path = Bundler.settings[:path]
        raise "Can't standalone without an explicit path set"
      end
      standalone_path = Bundler.root.join(path).relative_path_from(bin_path)
      standalone_path = standalone_path
      template = File.read(File.expand_path("../templates/Executable.standalone", __FILE__))
      ruby_command = Thor::Util.ruby_command
      ruby_command = ruby_command

      spec.executables.each do |executable|
        next if executable == "bundle"
        executable_path = Pathname(spec.full_gem_path).join(spec.bindir, executable).relative_path_from(bin_path)
        executable_path = executable_path
        File.open "#{bin_path}/#{executable}", "w", 0o755 do |f|
          if RUBY_VERSION >= "2.6"
            f.puts ERB.new(template, :trim_mode => "-").result(binding)
          else
            f.puts ERB.new(template, nil, "-").result(binding)
          end
        end
      end
    end

run(options) click to toggle source

Runs the install procedures for a specific Gemfile.

Firstly, this method will check to see if `Bundler.bundle_path` exists and if not then Bundler will create the directory. This is usually the same location as RubyGems which typically is the `~/.gem` directory unless other specified.

Secondly, it checks if Bundler has been configured to be “frozen”. Frozen ensures that the Gemfile and the Gemfile.lock file are matching. This stops a situation where a developer may update the Gemfile but may not run `bundle install`, which leads to the Gemfile.lock file not being correctly updated. If this file is not correctly updated then any other developer running `bundle install` will potentially not install the correct gems.

Thirdly, Bundler checks if there are any dependencies specified in the Gemfile. If there are no dependencies specified then Bundler returns a warning message stating so and this method returns.

Fourthly, Bundler checks if the Gemfile.lock exists, and if so then proceeds to set up a definition based on the Gemfile and the Gemfile.lock. During this step Bundler will also download information about any new gems that are not in the Gemfile.lock and resolve any dependencies if needed.

Fifthly, Bundler resolves the dependencies either through a cache of gems or by remote. This then leads into the gems being installed, along with stubs for their executables, but only if the –binstubs option has been passed or Bundler.options has been set earlier.

Sixthly, a new Gemfile.lock is created from the installed gems to ensure that the next time that a user runs `bundle install` they will receive any updates from this process.

Finally, if the user has specified the standalone flag, Bundler will generate the needed require paths and save them in a `setup.rb` file. See `bundle standalone –help` for more information.

    # File lib/bundler/installer.rb, line 70
    def run(options)
      create_bundle_path

      ProcessLock.lock do
        if Bundler.frozen_bundle?
          @definition.ensure_equivalent_gemfile_and_lockfile(options[:deployment])
        end

        if @definition.dependencies.empty?
          Bundler.ui.warn "The Gemfile specifies no dependencies"
          lock
          return
        end

        if resolve_if_needed(options)
          ensure_specs_are_compatible!
          warn_on_incompatible_bundler_deps
          load_plugins
          options.delete(:jobs)
        else
          options[:jobs] = 1 # to avoid the overhead of Bundler::Worker
        end
        install(options)

        lock unless Bundler.frozen_bundle?
        Standalone.new(options[:standalone], @definition).generate if options[:standalone]
      end
    end

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