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# -*- ruby -*-
# for backward compatibility
warn "Warning:#{caller[0].sub(/:in `.*'\z/, '')}: Win32API is deprecated after Ruby 1.9.1; use fiddle directly instead" if $VERBOSE
require 'fiddle/import'
class Win32API
DLL = {}
TYPEMAP = {"0" => Fiddle::TYPE_VOID, "S" => Fiddle::TYPE_VOIDP, "I" => Fiddle::TYPE_LONG}
POINTER_TYPE = Fiddle::SIZEOF_VOIDP == Fiddle::SIZEOF_LONG_LONG ? 'q*' : 'l!*'
def initialize(dllname, func, import, export = "0", calltype = :stdcall)
@proto = [import].join.tr("VPpNnLlIi", "0SSI").sub(/^(.)0*$/, '\1')
handle = DLL[dllname] ||= Fiddle.dlopen(dllname)
@func = Fiddle::Function.new(
handle[func],
import.chars.map { |win_type| TYPEMAP[win_type.tr("VPpNnLlIi", "0SSI")] },
TYPEMAP[export.tr("VPpNnLlIi", "0SSI")],
Fiddle::Importer.const_get(:CALL_TYPE_TO_ABI)[calltype]
)
rescue Fiddle::DLError => e
raise LoadError, e.message, e.backtrace
end
def call(*args)
import = @proto.split("")
args.each_with_index do |x, i|
args[i], = [x == 0 ? nil : x].pack("p").unpack(POINTER_TYPE) if import[i] == "S"
args[i], = [x].pack("I").unpack("i") if import[i] == "I"
end
ret, = @func.call(*args)
return ret || 0
end
alias Call call
end
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