class Bundler::Injector

Public Class Methods

inject(new_deps, options = {}) click to toggle source
# File lib/bundler/injector.rb, line 4
def self.inject(new_deps, options = {})
  injector = new(new_deps, options)
  injector.inject(Bundler.default_gemfile, Bundler.default_lockfile)
end
new(new_deps, options = {}) click to toggle source
# File lib/bundler/injector.rb, line 9
def initialize(new_deps, options = {})
  @new_deps = new_deps
  @options = options
end

Public Instance Methods

inject(gemfile_path, lockfile_path) click to toggle source
# File lib/bundler/injector.rb, line 14
def inject(gemfile_path, lockfile_path)
  if Bundler.frozen?
    # ensure the lock and Gemfile are synced
    Bundler.definition.ensure_equivalent_gemfile_and_lockfile(true)
  end

  # temporarily unfreeze
  Bundler.settings.temporary(:deployment => false, :frozen => false) do
    # evaluate the Gemfile we have now
    builder = Dsl.new
    builder.eval_gemfile(gemfile_path)

    # don't inject any gems that are already in the Gemfile
    @new_deps -= builder.dependencies

    # add new deps to the end of the in-memory Gemfile
    # Set conservative versioning to false because we want to let the resolver resolve the version first
    builder.eval_gemfile("injected gems", build_gem_lines(false)) if @new_deps.any?

    # resolve to see if the new deps broke anything
    @definition = builder.to_definition(lockfile_path, {})
    @definition.resolve_remotely!

    # since nothing broke, we can add those gems to the gemfile
    append_to(gemfile_path, build_gem_lines(@options[:conservative_versioning])) if @new_deps.any?

    # since we resolved successfully, write out the lockfile
    @definition.lock(Bundler.default_lockfile)

    # invalidate the cached Bundler.definition
    Bundler.reset_paths!

    # return an array of the deps that we added
    @new_deps
  end
end

Private Instance Methods

append_to(gemfile_path, new_gem_lines) click to toggle source
# File lib/bundler/injector.rb, line 83
def append_to(gemfile_path, new_gem_lines)
  gemfile_path.open("a") do |f|
    f.puts
    if @options["timestamp"] || @options["timestamp"].nil?
      f.puts "# Added at #{Time.now} by #{`whoami`.chomp}:"
    end
    f.puts new_gem_lines
  end
end
build_gem_lines(conservative_versioning) click to toggle source
# File lib/bundler/injector.rb, line 63
def build_gem_lines(conservative_versioning)
  @new_deps.map do |d|
    name = d.name.dump

    requirement = if conservative_versioning
      ", \"#{conservative_version(@definition.specs[d.name][0])}\""
    else
      ", #{d.requirement.as_list.map(&:dump).join(", ")}"
    end

    if d.groups != Array(:default)
      group = d.groups.size == 1 ? ", :group => #{d.groups.inspect}" : ", :groups => #{d.groups.inspect}"
    end

    source = ", :source => \"#{d.source}\"" unless d.source.nil?

    %(gem #{name}#{requirement}#{group}#{source})
  end.join("\n")
end
conservative_version(spec) click to toggle source
# File lib/bundler/injector.rb, line 53
def conservative_version(spec)
  version = spec.version
  return ">= 0" if version.nil?
  segments = version.segments
  seg_end_index = version >= Gem::Version.new("1.0") ? 1 : 2

  prerelease_suffix = version.to_s.gsub(version.release.to_s, "") if version.prerelease?
  "~> #{segments[0..seg_end_index].join(".")}#{prerelease_suffix}"
end