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require 'pathname'
require 'rubygems'
Gem.source_index # ensure Rubygems is fully loaded in Ruby 1.9
module Gem
class Dependency
if !instance_methods.map { |m| m.to_s }.include?("requirement")
def requirement
version_requirements
end
end
end
end
module Bundler
class Specification < Gem::Specification
attr_accessor :relative_loaded_from
def self.from_gemspec(gemspec)
spec = allocate
gemspec.instance_variables.each do |ivar|
spec.instance_variable_set(ivar, gemspec.instance_variable_get(ivar))
end
spec
end
def loaded_from
return super unless relative_loaded_from
source.path.join(relative_loaded_from).to_s
end
def full_gem_path
Pathname.new(loaded_from).dirname.expand_path.to_s
end
end
module SharedHelpers
attr_accessor :gem_loaded
def default_gemfile
gemfile = find_gemfile
gemfile or raise GemfileNotFound, "Could not locate Gemfile"
Pathname.new(gemfile)
end
def in_bundle?
find_gemfile
end
def env_file
default_gemfile.dirname.join(".bundle/environment.rb")
end
private
def find_gemfile
return ENV['BUNDLE_GEMFILE'] if ENV['BUNDLE_GEMFILE']
previous = nil
current = File.expand_path(Dir.pwd)
until !File.directory?(current) || current == previous
filename = File.join(current, 'Gemfile')
return filename if File.file?(filename)
current, previous = File.expand_path("..", current), current
end
end
def clean_load_path
# handle 1.9 where system gems are always on the load path
if defined?(::Gem)
me = File.expand_path("../../", __FILE__)
$LOAD_PATH.reject! do |p|
next if File.expand_path(p).include?(me)
p != File.dirname(__FILE__) &&
Gem.path.any? { |gp| p.include?(gp) }
end
$LOAD_PATH.uniq!
end
end
def reverse_rubygems_kernel_mixin
# Disable rubygems' gem activation system
::Kernel.class_eval do
if private_method_defined?(:gem_original_require)
alias rubygems_require require
alias require gem_original_require
end
undef gem
end
end
def cripple_rubygems(specs)
reverse_rubygems_kernel_mixin
executables = specs.map { |s| s.executables }.flatten
Gem.source_index # ensure RubyGems is fully loaded
::Kernel.class_eval do
private
def gem(*) ; end
end
::Kernel.send(:define_method, :gem) do |dep, *reqs|
if executables.include? File.basename(caller.first.split(':').first)
return
end
opts = reqs.last.is_a?(Hash) ? reqs.pop : {}
unless dep.respond_to?(:name) && dep.respond_to?(:requirement)
dep = Gem::Dependency.new(dep, reqs)
end
spec = specs.find { |s| s.name == dep.name }
if spec.nil?
e = Gem::LoadError.new "#{dep.name} is not part of the bundle. Add it to Gemfile."
e.name = dep.name
e.version_requirement = dep.requirement
raise e
elsif dep !~ spec
e = Gem::LoadError.new "can't activate #{dep}, already activated #{spec.full_name}. " \
"Make sure all dependencies are added to Gemfile."
e.name = dep.name
e.version_requirement = dep.requirement
raise e
end
true
end
# === Following hacks are to improve on the generated bin wrappers ===
# Yeah, talk about a hack
source_index_class = (class << Gem::SourceIndex ; self ; end)
source_index_class.send(:define_method, :from_gems_in) do |*args|
source_index = Gem::SourceIndex.new
source_index.spec_dirs = *args
source_index.add_specs(*specs)
source_index
end
# OMG more hacks
gem_class = (class << Gem ; self ; end)
gem_class.send(:define_method, :bin_path) do |name, *args|
exec_name, *reqs = args
spec = nil
if exec_name
spec = specs.find { |s| s.executables.include?(exec_name) }
spec or raise Gem::Exception, "can't find executable #{exec_name}"
else
spec = specs.find { |s| s.name == name }
exec_name = spec.default_executable or raise Gem::Exception, "no default executable for #{spec.full_name}"
end
gem_bin = File.join(spec.full_gem_path, spec.bindir, exec_name)
gem_from_path_bin = File.join(File.dirname(spec.loaded_from), spec.bindir, exec_name)
File.exist?(gem_bin) ? gem_bin : gem_from_path_bin
end
end
extend self
end
end
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