On Wed, Dec 19, 2012 at 5:43 AM, Albert-Jan Roskam <fo...@yahoo.com> wrote: > >So MBCS is just a collective noun for whatever happens to be the >installed/available codepage of the host computer (at least with >CP_ACP)?
To be clear, the "mbcs" encoding in Python uses CP_ACP. MBCS means multibyte character set. The term ANSI gets thrown around, too, but Windows legacy code pages aren't ANSI standards. >I didn't know anything about wintypes and I find it quite hard to >understand! I am trying to write a ctypes wrapper for >WideCharToMultiByte. Just for the fun of it? >http://pastebin.com/SEr4Wec9 >The code is kinda verbose, but I hope this makes it easier to read. >Does this makes sense at all? As for now, the program returns an >error code (oddly, zero is an error code here). Use None for NULL. You shouldn't encode a string argument you've declared as c_wchar_p (i.e. wintypes.LPCWSTR, i.e. type 'Z'). If you initialize to a byte string, the setter Z_set calls PyUnicode_FromEncodedObject using the "mbcs" encoding (this is the default on Windows, set by set_conversion_mode("mbcs", "ignore")). This hands off to decode_mbcs, which produces nonsense for a UTF-16LE encoded string. GetLastError should be defined already, along with WinError, a convenience function that returns an instance of WindowsError. 2.6.4 source: http://hg.python.org/cpython/file/8803c3d61da2/Lib/ctypes/__init__.py#l448 Here's a quick hack that you should help you along: import ctypes from ctypes import wintypes _CP_UTF8 = 65001 _CP_ACP = 0 # ANSI _LPBOOL = ctypes.POINTER(ctypes.c_long) _wideCharToMultiByte = ctypes.windll.kernel32.WideCharToMultiByte _wideCharToMultiByte.restype = ctypes.c_int _wideCharToMultiByte.argtypes = [ wintypes.UINT, wintypes.DWORD, wintypes.LPCWSTR, ctypes.c_int, wintypes.LPSTR, ctypes.c_int, wintypes.LPCSTR, _LPBOOL] def wide2utf8(fn): codePage = _CP_UTF8 dwFlags = 0 lpWideCharStr = fn cchWideChar = len(fn) lpMultiByteStr = None cbMultiByte = 0 # zero requests size lpDefaultChar = None lpUsedDefaultChar = None # get size mbcssize = _wideCharToMultiByte( codePage, dwFlags, lpWideCharStr, cchWideChar, lpMultiByteStr, cbMultiByte, lpDefaultChar, lpUsedDefaultChar) if mbcssize <= 0: raise ctypes.WinError(mbcssize) lpMultiByteStr = ctypes.create_string_buffer(mbcssize) # convert retcode = _wideCharToMultiByte( codePage, dwFlags, lpWideCharStr, cchWideChar, lpMultiByteStr, mbcssize, lpDefaultChar, lpUsedDefaultChar) if retcode <= 0: raise ctypes.WinError(retcode) return lpMultiByteStr.value _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
