summaryrefslogtreecommitdiff
path: root/ext/win32/lib/Win32API.rb
diff options
context:
space:
mode:
authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-07-13 03:24:28 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-07-13 03:24:28 +0000
commit771d31ace2e8fb923852cb2a70b18b3c8b4edc69 (patch)
treeec54e1f7be06adceffbee18d763f0ecf5336050e /ext/win32/lib/Win32API.rb
parent725bc0c870ccc98da77cf6f1259e0a02c2ed6070 (diff)
ext/win32: move
* ext/win32: move from ext/dl and ext/fiddle. since ext/extmk.rb builds extensions in alphabetical order, compiled?('fiddle') under ext/dl makes no sense. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/win32/lib/Win32API.rb')
-rw-r--r--ext/win32/lib/Win32API.rb31
1 files changed, 31 insertions, 0 deletions
diff --git a/ext/win32/lib/Win32API.rb b/ext/win32/lib/Win32API.rb
new file mode 100644
index 0000000..4d7d488
--- /dev/null
+++ b/ext/win32/lib/Win32API.rb
@@ -0,0 +1,31 @@
+# -*- ruby -*-
+# for backward compatibility
+warn "Warning:#{caller[0].sub(/:in `.*'\z/, '')}: Win32API is deprecated after Ruby 1.9.1; use dl directly instead" if $VERBOSE
+
+require 'dl'
+
+class Win32API
+ DLL = {}
+ TYPEMAP = {"0" => DL::TYPE_VOID, "S" => DL::TYPE_VOIDP, "I" => DL::TYPE_LONG}
+ POINTER_TYPE = DL::SIZEOF_VOIDP == DL::SIZEOF_LONG_LONG ? 'q*' : 'l!*'
+
+ def initialize(dllname, func, import, export = "0", calltype = :stdcall)
+ @proto = [import].join.tr("VPpNnLlIi", "0SSI").sub(/^(.)0*$/, '\1')
+ handle = DLL[dllname] ||= DL.dlopen(dllname)
+ @func = DL::CFunc.new(handle[func], TYPEMAP[export.tr("VPpNnLlIi", "0SSI")], func, calltype)
+ rescue DL::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