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noexec.rb
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noexec.rb
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DEBUG = ENV.key?('NOEXEC_DEBUG')
begin
require "bundler"
module Bundler
class << self
def reset!
@load = nil
end
end
end
module Noexec
CURRENT = Dir.pwd
extend self
def candidate?(gemfile, bin)
ENV['BUNDLE_GEMFILE'] = gemfile
Bundler.load.specs.each do |spec|
next if spec.name == 'bundler'
return spec if spec.executables.include?(bin)
end
nil
ensure
Bundler.reset!
end
def setup
puts "Noexec" if DEBUG
catch(:done) do
throw :done, false if File.basename($0) == 'bundle'
gemfile = File.join(CURRENT, "Gemfile")
while true
if File.exist?(gemfile)
puts "Examining #{gemfile}" if DEBUG
if Noexec.candidate?(gemfile, File.basename($0))
puts "Using #{gemfile}" if DEBUG
Bundler.setup
throw :done, true
end
end
new_gemfile = File.expand_path("../../Gemfile", gemfile)
throw :done, false if new_gemfile == gemfile
gemfile = new_gemfile
end
puts "No valid Gemfile found, moving on" if DEBUG
false
end
end
end
rescue LoadError
warn "bundler not being used, unable to load" if DEBUG
end