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require 'pathname'
module Rails
module AppRailsLoader
RUBY = File.join(*RbConfig::CONFIG.values_at("bindir", "ruby_install_name")) + RbConfig::CONFIG["EXEEXT"]
EXECUTABLE = 'bin/rails'
def self.exec_app_rails
cwd = Dir.pwd
return unless in_rails_application_or_engine? || in_rails_application_or_engine_subdirectory?
exec RUBY, EXECUTABLE, *ARGV if in_rails_application_or_engine?
Dir.chdir("..") do
# Recurse in a chdir block: if the search fails we want to be sure
# the application is generated in the original working directory.
exec_app_rails unless cwd == Dir.pwd
end
rescue SystemCallError
# could not chdir, no problem just return
end
def self.in_rails_application_or_engine?
File.exists?(EXECUTABLE) && File.read(EXECUTABLE) =~ /(APP|ENGINE)_PATH/
end
def self.in_rails_application_or_engine_subdirectory?(path = Pathname.new(Dir.pwd))
File.exists?(File.join(path, EXECUTABLE)) || !path.root? && in_rails_application_or_engine_subdirectory?(path.parent)
end
end
end
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