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mherrmann/hiddenfiles_osx.py

Created October 5, 2016 08:57
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  1. mherrmann created this gist Oct 5, 2016.
    71 changes: 71 additions & 0 deletions hiddenfiles_osx.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,71 @@
    from ctypes import CFUNCTYPE, POINTER, c_uint8, c_void_p, c_long, addressof, \
    byref, CDLL, cdll, c_char_p
    from ctypes.util import find_library

    def is_hidden(path):
    if not isinstance(path, bytes):
    path = path.encode('utf-8')
    with AutoRelease() as autorelease:
    url = autorelease(CFURLCreateFromFileSystemRepresentation(
    None, path, len(path), False
    ))
    val = c_void_p(0)
    err = CFError()
    ret = CFURLCopyResourcePropertyForKey(
    url, kCFURLIsHiddenKey, addressof(val), byref(err)
    )
    if ret:
    autorelease(val)
    return bool(CFBooleanGetValue(val))
    else:
    raise OSError(
    'CFURLCopyResourcePropertyForKey failed with error %d' %
    CFErrorGetCode(err)
    )

    class AutoRelease:
    def __init__(self):
    self.to_release = []
    self.pool = None
    def __enter__(self):
    self.pool = \
    objc.objc_msgSend(NSAutoreleasePool, objc.sel_registerName('alloc'))
    self.pool = objc.objc_msgSend(self.pool, objc.sel_registerName('init'))
    return self
    def __call__(self, obj_to_release):
    self.to_release.append(obj_to_release)
    return obj_to_release
    def __exit__(self, *_):
    for obj in self.to_release:
    CFRelease(obj)
    objc.objc_msgSend(self.pool, objc.sel_registerName('drain'))

    CoreFoundation = CDLL(find_library('CoreFoundation'))
    Foundation = CDLL(find_library('Foundation'))
    objc = cdll.LoadLibrary(find_library('objc'))

    Boolean = c_uint8
    CFTypeRef = c_void_p
    CFIndex = c_long
    CFString = CFTypeRef
    CFURL = CFTypeRef
    CFError = CFTypeRef
    CFErrorRef = POINTER(CFError)

    CFRelease = CFUNCTYPE(None, CFTypeRef)(('CFRelease', Foundation))
    NSAutoreleasePool = objc.objc_getClass('NSAutoreleasePool')

    CFURLCreateFromFileSystemRepresentation = \
    CFUNCTYPE(CFURL, c_void_p, c_char_p, CFIndex, Boolean)\
    (('CFURLCreateFromFileSystemRepresentation', CoreFoundation))
    CFURLCopyResourcePropertyForKey = \
    CFUNCTYPE(Boolean, CFURL, CFString, c_void_p, CFErrorRef)\
    (('CFURLCopyResourcePropertyForKey', CoreFoundation))
    CFBooleanGetValue = \
    CFUNCTYPE(Boolean, c_void_p)\
    (('CFBooleanGetValue', CoreFoundation))
    CFErrorGetCode = \
    CFUNCTYPE(CFIndex, CFError)\
    (('CFErrorGetCode', CoreFoundation))

    kCFURLIsHiddenKey = CFString.in_dll(CoreFoundation, 'kCFURLIsHiddenKey')