mirror of
https://github.com/arsenetar/send2trash.git
synced 2024-10-29 21:05:57 +00:00
145 lines
4.9 KiB
Python
145 lines
4.9 KiB
Python
# Copyright 2017 Virgil Dupras
|
|
|
|
# This software is licensed under the "BSD" License as described in the "LICENSE" file,
|
|
# which should be included with this package. The terms are also available at
|
|
# http://www.hardcoded.net/licenses/bsd_license
|
|
|
|
from __future__ import unicode_literals
|
|
import os.path as op
|
|
from .compat import text_type
|
|
from .util import preprocess_paths
|
|
|
|
from ctypes import (
|
|
windll,
|
|
Structure,
|
|
byref,
|
|
c_uint,
|
|
create_unicode_buffer,
|
|
addressof,
|
|
GetLastError,
|
|
FormatError,
|
|
)
|
|
from ctypes.wintypes import HWND, UINT, LPCWSTR, BOOL
|
|
|
|
kernel32 = windll.kernel32
|
|
GetShortPathNameW = kernel32.GetShortPathNameW
|
|
|
|
shell32 = windll.shell32
|
|
SHFileOperationW = shell32.SHFileOperationW
|
|
|
|
|
|
class SHFILEOPSTRUCTW(Structure):
|
|
_fields_ = [
|
|
("hwnd", HWND),
|
|
("wFunc", UINT),
|
|
("pFrom", LPCWSTR),
|
|
("pTo", LPCWSTR),
|
|
("fFlags", c_uint),
|
|
("fAnyOperationsAborted", BOOL),
|
|
("hNameMappings", c_uint),
|
|
("lpszProgressTitle", LPCWSTR),
|
|
]
|
|
|
|
|
|
FO_MOVE = 1
|
|
FO_COPY = 2
|
|
FO_DELETE = 3
|
|
FO_RENAME = 4
|
|
|
|
FOF_MULTIDESTFILES = 1
|
|
FOF_SILENT = 4
|
|
FOF_NOCONFIRMATION = 16
|
|
FOF_ALLOWUNDO = 64
|
|
FOF_NOERRORUI = 1024
|
|
|
|
|
|
def prefix_and_path(path):
|
|
r"""Guess the long-path prefix based on the kind of *path*.
|
|
Local paths (C:\folder\file.ext) and UNC names (\\server\folder\file.ext)
|
|
are handled.
|
|
|
|
Return a tuple of the long-path prefix and the prefixed path.
|
|
"""
|
|
prefix, long_path = "\\\\?\\", path
|
|
|
|
if not path.startswith(prefix):
|
|
if path.startswith("\\\\"):
|
|
# Likely a UNC name
|
|
prefix = "\\\\?\\UNC"
|
|
long_path = prefix + path[1:]
|
|
else:
|
|
# Likely a local path
|
|
long_path = prefix + path
|
|
elif path.startswith(prefix + "UNC\\"):
|
|
# UNC name with long-path prefix
|
|
prefix = "\\\\?\\UNC"
|
|
|
|
return prefix, long_path
|
|
|
|
|
|
def get_awaited_path_from_prefix(prefix, path):
|
|
"""Guess the correct path to pass to the SHFileOperationW() call.
|
|
The long-path prefix must be removed, so we should take care of
|
|
different long-path prefixes.
|
|
"""
|
|
if prefix == "\\\\?\\UNC":
|
|
# We need to prepend a backslash for UNC names, as it was removed
|
|
# in prefix_and_path().
|
|
return "\\" + path[len(prefix) :]
|
|
return path[len(prefix) :]
|
|
|
|
|
|
def get_short_path_name(long_name):
|
|
prefix, long_path = prefix_and_path(long_name)
|
|
buf_size = GetShortPathNameW(long_path, None, 0)
|
|
# FIX: https://github.com/hsoft/send2trash/issues/31
|
|
# If buffer size is zero, an error has occurred.
|
|
if not buf_size:
|
|
err_no = GetLastError()
|
|
raise WindowsError(err_no, FormatError(err_no), long_path)
|
|
output = create_unicode_buffer(buf_size)
|
|
GetShortPathNameW(long_path, output, buf_size)
|
|
return get_awaited_path_from_prefix(prefix, output.value)
|
|
|
|
|
|
def send2trash(paths):
|
|
paths = preprocess_paths(paths)
|
|
# convert data type
|
|
paths = [text_type(path, "mbcs") if not isinstance(path, text_type) else path for path in paths]
|
|
# convert to full paths
|
|
paths = [op.abspath(path) if not op.isabs(path) else path for path in paths]
|
|
# get short path to handle path length issues
|
|
paths = [get_short_path_name(path) for path in paths]
|
|
fileop = SHFILEOPSTRUCTW()
|
|
fileop.hwnd = 0
|
|
fileop.wFunc = FO_DELETE
|
|
# FIX: https://github.com/hsoft/send2trash/issues/17
|
|
# Starting in python 3.6.3 it is no longer possible to use:
|
|
# LPCWSTR(path + '\0') directly as embedded null characters are no longer
|
|
# allowed in strings
|
|
# Workaround
|
|
# - create buffer of c_wchar[] (LPCWSTR is based on this type)
|
|
# - buffer is two c_wchar characters longer (double null terminator)
|
|
# - cast the address of the buffer to a LPCWSTR
|
|
# NOTE: based on how python allocates memory for these types they should
|
|
# always be zero, if this is ever not true we can go back to explicitly
|
|
# setting the last two characters to null using buffer[index] = '\0'.
|
|
# Additional note on another issue here, unicode_buffer expects length in
|
|
# bytes essentially, so having multi-byte characters causes issues if just
|
|
# passing pythons string length. Instead of dealing with this difference we
|
|
# just create a buffer then a new one with an extra null. Since the non-length
|
|
# specified version apparently stops after the first null, join with a space first.
|
|
buffer = create_unicode_buffer(" ".join(paths))
|
|
# convert to a single string of null terminated paths
|
|
path_string = "\0".join(paths)
|
|
buffer = create_unicode_buffer(path_string, len(buffer) + 1)
|
|
fileop.pFrom = LPCWSTR(addressof(buffer))
|
|
fileop.pTo = None
|
|
fileop.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT
|
|
fileop.fAnyOperationsAborted = 0
|
|
fileop.hNameMappings = 0
|
|
fileop.lpszProgressTitle = None
|
|
result = SHFileOperationW(byref(fileop))
|
|
if result:
|
|
raise WindowsError(result, FormatError(result), paths)
|