1# -*- ruby -*- 2# for backward compatibility 3warn "Warning:#{caller[0].sub(/:in `.*'\z/, '')}: Win32API is deprecated after Ruby 1.9.1; use dl directly instead" if $VERBOSE 4 5require 'dl' 6 7class Win32API 8 DLL = {} 9 TYPEMAP = {"0" => DL::TYPE_VOID, "S" => DL::TYPE_VOIDP, "I" => DL::TYPE_LONG} 10 POINTER_TYPE = DL::SIZEOF_VOIDP == DL::SIZEOF_LONG_LONG ? 'q*' : 'l!*' 11 12 def initialize(dllname, func, import, export = "0", calltype = :stdcall) 13 @proto = [import].join.tr("VPpNnLlIi", "0SSI").sub(/^(.)0*$/, '\1') 14 handle = DLL[dllname] ||= DL.dlopen(dllname) 15 @func = DL::CFunc.new(handle[func], TYPEMAP[export.tr("VPpNnLlIi", "0SSI")], func, calltype) 16 rescue DL::DLError => e 17 raise LoadError, e.message, e.backtrace 18 end 19 20 def call(*args) 21 import = @proto.split("") 22 args.each_with_index do |x, i| 23 args[i], = [x == 0 ? nil : x].pack("p").unpack(POINTER_TYPE) if import[i] == "S" 24 args[i], = [x].pack("I").unpack("i") if import[i] == "I" 25 end 26 ret, = @func.call(args) 27 return ret || 0 28 end 29 30 alias Call call 31end 32