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# frozen_string_literal: true
module Bundler
class Injector
def self.inject(new_deps, options = {})
injector = new(new_deps, options)
injector.inject(Bundler.default_gemfile, Bundler.default_lockfile)
end
def initialize(new_deps, options = {})
@new_deps = new_deps
@options = options
end
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
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
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
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
end
end
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