module BootLib module Require ARCHDIR = RbConfig::CONFIG['archdir'] RUBYLIBDIR = RbConfig::CONFIG['rubylibdir'] DLEXT = RbConfig::CONFIG['DLEXT'] def self.from_archdir(feature) require(File.join(ARCHDIR, "#{feature}.#{DLEXT}")) end def self.from_rubylibdir(feature) require(File.join(RUBYLIBDIR, "#{feature}.rb")) end def self.from_gem(gem, feature) match = $LOAD_PATH .select { |e| e.match(gem_pattern(gem)) } .map { |e| File.join(e, feature) } .detect { |e| File.exist?(e) } if match require(match) else puts "[BootLib::Require warning] couldn't locate #{feature}" require(feature) end end def self.gem_pattern(gem) %r{  /  (gems|extensions/[^/]+/[^/]+) # "gems" or "extensions/x64_64-darwin16/2.3.0"  /  #{Regexp.escape(gem)}-(\h{12}|(\d+\.)) # msgpack-1.2.3 or msgpack-1234567890ab  }x end end end