mirror of
https://github.com/ksherlock/prez.git
synced 2024-11-29 19:49:17 +00:00
118 lines
2.8 KiB
Python
118 lines
2.8 KiB
Python
import io
|
|
import sys
|
|
import os
|
|
import os.path
|
|
|
|
def _validate_mode(mode):
|
|
# strips "t" format, adds "b" format, and checks if the
|
|
# base file needs to be created.
|
|
# full validation will be handled by os.open
|
|
r = False
|
|
w = False
|
|
plus = False
|
|
rmode = "b"
|
|
for x in mode:
|
|
if x == "r": r = True
|
|
elif x in ["a", "x", "w"]: w = True
|
|
elif x in ["+"]: plus = True
|
|
else: continue
|
|
rmode += x
|
|
|
|
mode = ["r", "a"][w] # create if it does not exist.
|
|
return (mode, rmode)
|
|
|
|
# There's a better way to handle this but I don't recall it offhand.
|
|
# - open() opener=argument! opener(file,flags) -> fd
|
|
# - ... but that can't force it to be opened in binary mode.
|
|
def _open2(file, rfile, mode):
|
|
|
|
a = None
|
|
b = None
|
|
|
|
(mode, rmode) = _validate_mode(mode)
|
|
try:
|
|
a = io.open(file, mode)
|
|
b = io.open(rfile, rmode)
|
|
except Exception as e:
|
|
raise
|
|
finally:
|
|
if a: a.close()
|
|
|
|
a.close()
|
|
return b
|
|
|
|
_finder_magic = {
|
|
(0x00, 0x0000): b"BINApdos",
|
|
(0x04, 0x0000): b"TEXTpdos",
|
|
(0xff, 0x0000): b"PSYSpdos",
|
|
(0xb3, 0x0000): b"PS16pdos",
|
|
(0xd7, 0x0000): b"MIDIpdos",
|
|
(0xd8, 0x0000): b"AIFFpdos",
|
|
(0xd7, 0x0001): b"AIFCpdos",
|
|
(0xe0, 0x0005): b"dImgdCpy",
|
|
}
|
|
_z24 = bytearray(24)
|
|
def _make_finder_data(filetype, auxtype):
|
|
|
|
k = (filetype, auxtype)
|
|
x = _finder_magic.get((filetype, auxtype))
|
|
if not x:
|
|
x = struct.pack(">cBH4s", b'p', filetype & 0xff, auxtype & 0xffff, b"pdos")
|
|
|
|
return x
|
|
|
|
if sys.platform == "win32":
|
|
|
|
def open_rfork(file, mode="r"):
|
|
# protect against c -> c:stream
|
|
file = os.path.realpath(file)
|
|
rfile = file + ":AFP_Resource"
|
|
return _open2(file, rfile, mode)
|
|
|
|
def set_file_type(path, filetype, auxtype):
|
|
path = os.path.realpath(path)
|
|
path += ":AFP_AfpInfo"
|
|
f = open(path, "wb")
|
|
|
|
data = struct.pack("<IIII8s24xHI8x",
|
|
0x00504641, 0x00010000, 0, 0x80000000,
|
|
_make_finder_data(filetype, auxtype),
|
|
filetype, auxtype
|
|
)
|
|
|
|
f.write(data)
|
|
f.close()
|
|
return True
|
|
|
|
|
|
if sys.platform == "darwin":
|
|
def open_rfork(file, mode="r"):
|
|
file = os.path.realpath(file)
|
|
rfile = file + "/..namedfork/rsrc"
|
|
return _open2(file, rfile, mode)
|
|
|
|
# os.setxattr only available in linux.
|
|
import ctypes
|
|
_libc = ctypes.CDLL(None)
|
|
_setxattr = _libc.setxattr
|
|
_setxattr.argtypes = [ctypes.c_char_p, ctypes.c_char_p,
|
|
ctypes.c_void_p, ctypes.c_size_t,
|
|
ctypes.c_uint32, ctypes.c_int]
|
|
def set_file_type(path, filetype, auxtype):
|
|
|
|
data = struct.pack(">8s24x", _make_finder_data(filetype, auxtype))
|
|
ok = _setxattr(path.encode("utf-8"), b"com.apple.FinderInfo", data, 32, 0, 0)
|
|
e = ctypes.get_errno()
|
|
if ok < 0: return False
|
|
return True
|
|
|
|
if sys.platform == "linux":
|
|
def open_rfork(file, mode="r"):
|
|
raise NotImplementedError("open_rfork")
|
|
|
|
def set_file_type(path, filetype, auxtype):
|
|
|
|
data = struct.pack(">8s24x", _make_finder_data(filetype, auxtype))
|
|
os.setxattr(path, "com.apple.FinderInfo", data, 0, 0)
|
|
return True
|