Move mac/win to subpackages & fix #64

- Move macOS and Windows implementations to sub packagese to improve organization
- Fix #64 in legacy windows implementation by mapping results to standard error codes

send2trash/__init__.py

@@ -9,9 +9,9 @@ import sys
 from .exceptions import TrashPermissionError  # noqa: F401
 
 if sys.platform == "darwin":
-    from .plat_osx import send2trash
+    from .mac import send2trash
 elif sys.platform == "win32":
-    from .plat_win import send2trash
+    from .win import send2trash
 else:
     try:
         # If we can use gio, let's use it

send2trash/mac/__init__.py

@@ -11,10 +11,10 @@ from sys import version_info
 macos_ver = tuple(int(part) for part in mac_ver()[0].split("."))
 if version_info >= (3, 6) and macos_ver >= (10, 9):
     try:
-        from .plat_osx_pyobjc import send2trash
+        from .modern import send2trash
     except ImportError:
         # Try to fall back to ctypes version, although likely problematic still
-        from .plat_osx_ctypes import send2trash
+        from .legacy import send2trash
 else:
     # Just use the old version otherwise
-    from .plat_osx_ctypes import send2trash  # noqa: F401
+    from .legacy import send2trash  # noqa: F401

send2trash/mac/legacy.py

@@ -9,8 +9,8 @@ from __future__ import unicode_literals
 from ctypes import cdll, byref, Structure, c_char, c_char_p
 from ctypes.util import find_library
 
-from .compat import binary_type
-from .util import preprocess_paths
+from ..compat import binary_type
+from ..util import preprocess_paths
 
 Foundation = cdll.LoadLibrary(find_library("Foundation"))
 CoreServices = cdll.LoadLibrary(find_library("CoreServices"))

send2trash/mac/modern.py

@@ -5,8 +5,8 @@
 # http://www.hardcoded.net/licenses/bsd_license
 
 from Foundation import NSFileManager, NSURL
-from .compat import text_type
-from .util import preprocess_paths
+from ..compat import text_type
+from ..util import preprocess_paths
 
 
 def check_op_result(op_result):

send2trash/win/__init__.py

@@ -11,10 +11,10 @@ from platform import version
 if int(version().split(".", 1)[0]) >= 6:
     try:
         # Attempt to use pywin32 to use IFileOperation
-        from .plat_win_modern import send2trash
+        from .modern import send2trash
     except ImportError:
         # use SHFileOperation as fallback
-        from .plat_win_legacy import send2trash
+        from .legacy import send2trash
 else:
     # use SHFileOperation as fallback
-    from .plat_win_legacy import send2trash  # noqa: F401
+    from .legacy import send2trash  # noqa: F401

send2trash/win/legacy.py

@@ -6,8 +6,8 @@
 
 from __future__ import unicode_literals
 import os.path as op
-from .compat import text_type
-from .util import preprocess_paths
+from ..compat import text_type
+from ..util import preprocess_paths
 
 from ctypes import (
     windll,
@@ -53,6 +53,44 @@ FOF_ALLOWUNDO = 64
 FOF_NOERRORUI = 1024
 
 
+def convert_sh_file_opt_result(result):
+    # map overlapping values from SHFileOpterationW to approximate standard windows errors
+    # ref https://docs.microsoft.com/en-us/windows/win32/api/shellapi/nf-shellapi-shfileoperationw#return-value
+    # ref https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes--0-499-
+    results = {
+        0x71: 0x50,  # DE_SAMEFILE -> ERROR_FILE_EXISTS
+        0x72: 0x57,  # DE_MANYSRC1DEST -> ERROR_INVALID_PARAMETER
+        0x73: 0x57,  # DE_DIFFDIR -> ERROR_INVALID_PARAMETER
+        0x74: 0x57,  # DE_ROOTDIR -> ERROR_INVALID_PARAMETER
+        0x75: 0x4C7,  # DE_OPCANCELLED -> ERROR_CANCELLED
+        0x76: 0x57,  # DE_DESTSUBTREE -> ERROR_INVALID_PARAMETER
+        0x78: 0x05,  # DE_ACCESSDENIEDSRC -> ERROR_ACCESS_DENIED
+        0x79: 0x6F,  # DE_PATHTOODEEP -> ERROR_BUFFER_OVERFLOW
+        0x7A: 0x57,  # DE_MANYDEST -> ERROR_INVALID_PARAMETER
+        0x7C: 0xA1,  # DE_INVALIDFILES -> ERROR_BAD_PATHNAME
+        0x7D: 0x57,  # DE_DESTSAMETREE -> ERROR_INVALID_PARAMETER
+        0x7E: 0xB7,  # DE_FLDDESTISFILE -> ERROR_ALREADY_EXISTS
+        0x80: 0xB7,  # DE_FILEDESTISFLD -> ERROR_ALREADY_EXISTS
+        0x81: 0x6F,  # DE_FILENAMETOOLONG -> ERROR_BUFFER_OVERFLOW
+        0x82: 0x13,  # DE_DEST_IS_CDROM -> ERROR_WRITE_PROTECT
+        0x83: 0x13,  # DE_DEST_IS_DVD -> ERROR_WRITE_PROTECT
+        0x84: 0x6F9,  # DE_DEST_IS_CDRECORD -> ERROR_UNRECOGNIZED_MEDIA
+        0x85: 0xDF,  # DE_FILE_TOO_LARGE -> ERROR_FILE_TOO_LARGE
+        0x86: 0x13,  # DE_SRC_IS_CDROM -> ERROR_WRITE_PROTECT
+        0x87: 0x13,  # DE_SRC_IS_DVD -> ERROR_WRITE_PROTECT
+        0x88: 0x6F9,  # DE_SRC_IS_CDRECORD -> ERROR_UNRECOGNIZED_MEDIA
+        0xB7: 0x6F,  # DE_ERROR_MAX -> ERROR_BUFFER_OVERFLOW
+        0x402: 0xA1,  # UNKNOWN -> ERROR_BAD_PATHNAME
+        0x10000: 0x1D,  # ERRORONDEST -> ERROR_WRITE_FAULT
+        0x10074: 0x57,  # DE_ROOTDIR | ERRORONDEST -> ERROR_INVALID_PARAMETER
+    }
+
+    if result in results.keys():
+        return results[result]
+    else:
+        return result
+
+
 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)
@@ -141,4 +179,5 @@ def send2trash(paths):
     fileop.lpszProgressTitle = None
     result = SHFileOperationW(byref(fileop))
     if result:
-        raise WindowsError(result, FormatError(result), paths)
+        error = convert_sh_file_opt_result(result)
+        raise WindowsError(None, FormatError(error), paths, error)

send2trash/win/modern.py

@@ -6,8 +6,8 @@
 
 from __future__ import unicode_literals
 import os.path as op
-from .compat import text_type
-from .util import preprocess_paths
+from ..compat import text_type
+from ..util import preprocess_paths
 from platform import version
 import pythoncom
 import pywintypes
@@ -27,7 +27,10 @@ def send2trash(paths):
     pythoncom.CoInitialize()
     # create instance of file operation object
     fileop = pythoncom.CoCreateInstance(
-        shell.CLSID_FileOperation, None, pythoncom.CLSCTX_ALL, shell.IID_IFileOperation,
+        shell.CLSID_FileOperation,
+        None,
+        pythoncom.CLSCTX_ALL,
+        shell.IID_IFileOperation,
     )
     # default flags to use
     flags = shellcon.FOF_NOCONFIRMATION | shellcon.FOF_NOERRORUI | shellcon.FOF_SILENT | shellcon.FOFX_EARLYFAILURE