1 import sys, os 2 3 # Delay import _tkinter until we have set TCL_LIBRARY, 4 # so that Tcl_FindExecutable has a chance to locate its 5 # encoding directory. 6 7 # Unfortunately, we cannot know the TCL_LIBRARY directory 8 # if we don't know the tcl version, which we cannot find out 9 # without import Tcl. Fortunately, Tcl will itself look in 10 # <TCL_LIBRARY>\..\tcl<TCL_VERSION>, so anything close to 11 # the real Tcl library will do. 12 13 # Expand symbolic links on Vista 14 try: 15 import ctypes 16 ctypes.windll.kernel32.GetFinalPathNameByHandleW 17 except (ImportError, AttributeError): 18 def convert_path(s): 19 return s 20 else: 21 def convert_path(s): 22 assert isinstance(s, str) # sys.prefix contains only bytes 23 udir = s.decode("mbcs") 24 hdir = ctypes.windll.kernel32.\ 25 CreateFileW(udir, 0x80, # FILE_READ_ATTRIBUTES 26 1, # FILE_SHARE_READ 27 None, 3, # OPEN_EXISTING 28 0x02000000, # FILE_FLAG_BACKUP_SEMANTICS 29 None) 30 if hdir == -1: 31 # Cannot open directory, give up 32 return s 33 buf = ctypes.create_unicode_buffer(u"", 32768) 34 res = ctypes.windll.kernel32.\ 35 GetFinalPathNameByHandleW(hdir, buf, len(buf), 36 0) # VOLUME_NAME_DOS 37 ctypes.windll.kernel32.CloseHandle(hdir) 38 if res == 0: 39 # Conversion failed (e.g. network location) 40 return s 41 s = buf[:res].encode("mbcs") 42 # Ignore leading \\?\ 43 if s.startswith("\\\\?\\"): 44 s = s[4:] 45 if s.startswith("UNC"): 46 s = "\\" + s[3:] 47 return s 48 49 prefix = os.path.join(sys.prefix,"tcl") 50 if not os.path.exists(prefix): 51 # devdir/../tcltk/lib 52 prefix = os.path.join(sys.prefix, os.path.pardir, "tcltk", "lib") 53 prefix = os.path.abspath(prefix) 54 # if this does not exist, no further search is needed 55 if os.path.exists(prefix): 56 prefix = convert_path(prefix) 57 if "TCL_LIBRARY" not in os.environ: 58 for name in os.listdir(prefix): 59 if name.startswith("tcl"): 60 tcldir = os.path.join(prefix,name) 61 if os.path.isdir(tcldir): 62 os.environ["TCL_LIBRARY"] = tcldir 63 # Compute TK_LIBRARY, knowing that it has the same version 64 # as Tcl 65 import _tkinter 66 ver = str(_tkinter.TCL_VERSION) 67 if "TK_LIBRARY" not in os.environ: 68 v = os.path.join(prefix, 'tk'+ver) 69 if os.path.exists(os.path.join(v, "tclIndex")): 70 os.environ['TK_LIBRARY'] = v 71 # We don't know the Tix version, so we must search the entire 72 # directory 73 if "TIX_LIBRARY" not in os.environ: 74 for name in os.listdir(prefix): 75 if name.startswith("tix"): 76 tixdir = os.path.join(prefix,name) 77 if os.path.isdir(tixdir): 78 os.environ["TIX_LIBRARY"] = tixdir 79
