Split plat_win into legacy and modern
This commit is contained in:
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GPG Key ID:
C63300DCE48AB2F1
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@ -5,171 +5,16 @@
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# http://www.hardcoded.net/licenses/bsd_license
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from __future__ import unicode_literals
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import os.path as op
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from .compat import text_type
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from platform import version
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legacy = False
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# if windows is vista or newer and pywin32 is available use IFileOperation
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if int(version().split(".", 1)[0]) >= 6:
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try:
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# Attempt to use pywin32 to use IFileOperation
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import pythoncom
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import pywintypes
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from win32com.shell import shell, shellcon
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def send2trash(path):
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if not isinstance(path, list):
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path = [path]
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# convert data type
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path = [
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text_type(item, "mbcs") if not isinstance(item, text_type) else item
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for item in path
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]
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# convert to full paths
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path = [op.abspath(item) if not op.isabs(item) else item for item in path]
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# remove the leading \\?\ if present
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path = [item[4:] if item.startswith("\\\\?\\") else item for item in path]
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# create instance of file operation object
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fileop = pythoncom.CoCreateInstance(
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shell.CLSID_FileOperation,
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None,
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pythoncom.CLSCTX_ALL,
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shell.IID_IFileOperation,
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)
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# default flags to use
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flags = (
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shellcon.FOF_NOCONFIRMATION
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| shellcon.FOF_NOERRORUI
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| shellcon.FOF_SILENT
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| shellcon.FOFX_EARLYFAILURE
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)
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# determine rest of the flags based on OS version
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# use newer recommended flags if available
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if int(version().split(".", 1)[0]) >= 8:
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flags |= (
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0x20000000 # FOFX_ADDUNDORECORD win 8+
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| 0x00080000 # FOFX_RECYCLEONDELETE win 8+
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)
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else:
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flags |= shellcon.FOF_ALLOWUNDO
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# set the flags
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fileop.SetOperationFlags(flags)
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# actually try to perform the operation, this section may throw a
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# pywintypes.com_error which does not seem to create as nice of an
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# error as OSError so wrapping with try to convert
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try:
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for itemPath in path:
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item = shell.SHCreateItemFromParsingName(
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itemPath, None, shell.IID_IShellItem
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)
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fileop.DeleteItem(item)
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result = fileop.PerformOperations()
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aborted = fileop.GetAnyOperationsAborted()
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# if non-zero result or aborted throw an exception
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if result or aborted:
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raise OSError(None, None, path, result)
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except pywintypes.com_error as error:
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# convert to standard OS error, allows other code to get a
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# normal errno
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raise OSError(None, error.strerror, path, error.hresult)
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from .plat_win_modern import send2trash
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except ImportError:
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legacy = True
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# use SHFileOperation as fallback
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from .plat_win_legacy import send2trash
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else:
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legacy = True
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# use SHFileOperation as fallback
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if legacy:
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from ctypes import (
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windll,
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Structure,
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byref,
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c_uint,
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create_unicode_buffer,
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addressof,
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GetLastError,
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FormatError,
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)
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from ctypes.wintypes import HWND, UINT, LPCWSTR, BOOL
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kernel32 = windll.kernel32
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GetShortPathNameW = kernel32.GetShortPathNameW
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shell32 = windll.shell32
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SHFileOperationW = shell32.SHFileOperationW
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class SHFILEOPSTRUCTW(Structure):
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_fields_ = [
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("hwnd", HWND),
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("wFunc", UINT),
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("pFrom", LPCWSTR),
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("pTo", LPCWSTR),
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("fFlags", c_uint),
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("fAnyOperationsAborted", BOOL),
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("hNameMappings", c_uint),
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("lpszProgressTitle", LPCWSTR),
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]
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FO_MOVE = 1
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FO_COPY = 2
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FO_DELETE = 3
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FO_RENAME = 4
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FOF_MULTIDESTFILES = 1
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FOF_SILENT = 4
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FOF_NOCONFIRMATION = 16
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FOF_ALLOWUNDO = 64
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FOF_NOERRORUI = 1024
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def get_short_path_name(long_name):
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if not long_name.startswith("\\\\?\\"):
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long_name = "\\\\?\\" + long_name
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buf_size = GetShortPathNameW(long_name, None, 0)
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# FIX: https://github.com/hsoft/send2trash/issues/31
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# If buffer size is zero, an error has occurred.
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if not buf_size:
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err_no = GetLastError()
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raise WindowsError(err_no, FormatError(err_no), long_name[4:])
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output = create_unicode_buffer(buf_size)
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GetShortPathNameW(long_name, output, buf_size)
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return output.value[4:] # Remove '\\?\' for SHFileOperationW
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def send2trash(path):
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if not isinstance(path, list):
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path = [path]
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# convert data type
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path = [
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text_type(item, "mbcs") if not isinstance(item, text_type) else item
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for item in path
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]
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# convert to full paths
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path = [op.abspath(item) if not op.isabs(item) else item for item in path]
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# get short path to handle path length issues
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path = [get_short_path_name(item) for item in path]
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# convert to a single string of null terminated paths
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path = "\0".join(path)
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fileop = SHFILEOPSTRUCTW()
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fileop.hwnd = 0
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fileop.wFunc = FO_DELETE
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# FIX: https://github.com/hsoft/send2trash/issues/17
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# Starting in python 3.6.3 it is no longer possible to use:
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# LPCWSTR(path + '\0') directly as embedded null characters are no longer
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# allowed in strings
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# Workaround
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# - create buffer of c_wchar[] (LPCWSTR is based on this type)
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# - buffer is two c_wchar characters longer (double null terminator)
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# - cast the address of the buffer to a LPCWSTR
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# NOTE: based on how python allocates memory for these types they should
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# always be zero, if this is ever not true we can go back to explicitly
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# setting the last two characters to null using buffer[index] = '\0'.
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buffer = create_unicode_buffer(path, len(path) + 2)
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fileop.pFrom = LPCWSTR(addressof(buffer))
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fileop.pTo = None
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fileop.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT
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fileop.fAnyOperationsAborted = 0
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fileop.hNameMappings = 0
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fileop.lpszProgressTitle = None
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result = SHFileOperationW(byref(fileop))
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if result:
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raise WindowsError(result, FormatError(result), path)
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# use SHFileOperation as fallback
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from .plat_win_legacy import send2trash
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@ -0,0 +1,105 @@
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# Copyright 2017 Virgil Dupras
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# This software is licensed under the "BSD" License as described in the "LICENSE" file,
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# which should be included with this package. The terms are also available at
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# http://www.hardcoded.net/licenses/bsd_license
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from __future__ import unicode_literals
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import os.path as op
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from .compat import text_type
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from ctypes import (
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windll,
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Structure,
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byref,
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c_uint,
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create_unicode_buffer,
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addressof,
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GetLastError,
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FormatError,
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)
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from ctypes.wintypes import HWND, UINT, LPCWSTR, BOOL
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kernel32 = windll.kernel32
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GetShortPathNameW = kernel32.GetShortPathNameW
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shell32 = windll.shell32
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SHFileOperationW = shell32.SHFileOperationW
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class SHFILEOPSTRUCTW(Structure):
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_fields_ = [
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("hwnd", HWND),
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("wFunc", UINT),
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("pFrom", LPCWSTR),
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("pTo", LPCWSTR),
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("fFlags", c_uint),
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("fAnyOperationsAborted", BOOL),
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("hNameMappings", c_uint),
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("lpszProgressTitle", LPCWSTR),
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]
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FO_MOVE = 1
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FO_COPY = 2
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FO_DELETE = 3
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FO_RENAME = 4
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FOF_MULTIDESTFILES = 1
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FOF_SILENT = 4
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FOF_NOCONFIRMATION = 16
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FOF_ALLOWUNDO = 64
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FOF_NOERRORUI = 1024
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def get_short_path_name(long_name):
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if not long_name.startswith("\\\\?\\"):
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long_name = "\\\\?\\" + long_name
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buf_size = GetShortPathNameW(long_name, None, 0)
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# FIX: https://github.com/hsoft/send2trash/issues/31
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# If buffer size is zero, an error has occurred.
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if not buf_size:
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err_no = GetLastError()
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raise WindowsError(err_no, FormatError(err_no), long_name[4:])
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output = create_unicode_buffer(buf_size)
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GetShortPathNameW(long_name, output, buf_size)
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return output.value[4:] # Remove '\\?\' for SHFileOperationW
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def send2trash(paths):
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if not isinstance(paths, list):
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paths = [paths]
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# convert data type
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paths = [
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text_type(path, "mbcs") if not isinstance(path, text_type) else path
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for path in paths
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]
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# convert to full paths
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paths = [op.abspath(path) if not op.isabs(path) else path for path in paths]
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# get short path to handle path length issues
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paths = [get_short_path_name(path) for path in paths]
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# convert to a single string of null terminated paths
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paths = "\0".join(paths)
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fileop = SHFILEOPSTRUCTW()
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fileop.hwnd = 0
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fileop.wFunc = FO_DELETE
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# FIX: https://github.com/hsoft/send2trash/issues/17
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# Starting in python 3.6.3 it is no longer possible to use:
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# LPCWSTR(path + '\0') directly as embedded null characters are no longer
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# allowed in strings
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# Workaround
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# - create buffer of c_wchar[] (LPCWSTR is based on this type)
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# - buffer is two c_wchar characters longer (double null terminator)
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# - cast the address of the buffer to a LPCWSTR
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# NOTE: based on how python allocates memory for these types they should
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# always be zero, if this is ever not true we can go back to explicitly
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# setting the last two characters to null using buffer[index] = '\0'.
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buffer = create_unicode_buffer(paths, len(paths) + 2)
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fileop.pFrom = LPCWSTR(addressof(buffer))
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fileop.pTo = None
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fileop.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT
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fileop.fAnyOperationsAborted = 0
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fileop.hNameMappings = 0
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fileop.lpszProgressTitle = None
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result = SHFileOperationW(byref(fileop))
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if result:
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raise WindowsError(result, FormatError(result), paths)
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@ -0,0 +1,65 @@
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# Copyright 2017 Virgil Dupras
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# This software is licensed under the "BSD" License as described in the "LICENSE" file,
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# which should be included with this package. The terms are also available at
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# http://www.hardcoded.net/licenses/bsd_license
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from __future__ import unicode_literals
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import os.path as op
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from .compat import text_type
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from platform import version
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import pythoncom
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import pywintypes
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from win32com.shell import shell, shellcon
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def send2trash(paths):
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if not isinstance(paths, list):
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paths = [paths]
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# convert data type
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paths = [
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text_type(path, "mbcs") if not isinstance(path, text_type) else path
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for path in paths
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]
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# convert to full paths
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paths = [op.abspath(path) if not op.isabs(path) else path for path in paths]
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# remove the leading \\?\ if present
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paths = [path[4:] if path.startswith("\\\\?\\") else path for path in paths]
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# create instance of file operation object
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fileop = pythoncom.CoCreateInstance(
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shell.CLSID_FileOperation, None, pythoncom.CLSCTX_ALL, shell.IID_IFileOperation,
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)
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# default flags to use
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flags = (
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shellcon.FOF_NOCONFIRMATION
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| shellcon.FOF_NOERRORUI
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| shellcon.FOF_SILENT
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| shellcon.FOFX_EARLYFAILURE
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)
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# determine rest of the flags based on OS version
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# use newer recommended flags if available
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if int(version().split(".", 1)[0]) >= 8:
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flags |= (
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0x20000000 # FOFX_ADDUNDORECORD win 8+
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| 0x00080000 # FOFX_RECYCLEONDELETE win 8+
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)
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else:
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flags |= shellcon.FOF_ALLOWUNDO
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# set the flags
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fileop.SetOperationFlags(flags)
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# actually try to perform the operation, this section may throw a
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# pywintypes.com_error which does not seem to create as nice of an
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# error as OSError so wrapping with try to convert
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try:
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for path in paths:
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item = shell.SHCreateItemFromParsingName(path, None, shell.IID_IShellItem)
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fileop.DeleteItem(item)
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result = fileop.PerformOperations()
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aborted = fileop.GetAnyOperationsAborted()
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# if non-zero result or aborted throw an exception
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if result or aborted:
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raise OSError(None, None, paths, result)
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except pywintypes.com_error as error:
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# convert to standard OS error, allows other code to get a
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# normal errno
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raise OSError(None, error.strerror, path, error.hresult)
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