Update version for 1.7.1 release

Windows legacy: fix handling of UNC names

CHANGES.rst

@@ -1,8 +1,19 @@
 Changes
 =======
-
-Version 1.7.0a -- 2020/04/20
+Version 1.7.1 -- 2021/06/21
 ----------------------------
+
+* Release stable version with changes from last 3 releases
+* Fix handling of UNC names (#57)
+
+Version 1.7.0a1 -- 2021/05/14
+----------------------------
+
+* Changed conditional for when to try to use pyobjc version (#51)
+
+Version 1.7.0a0 -- 2021/04/20
+----------------------------
+
 * Add console_script entry point (#50)
 * Increased python CI versions (#52, #54)
 * Fix minor issue in setup.py (#53)

send2trash/plat_win_legacy.py

@@ -51,18 +51,53 @@ 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):
-    if not long_name.startswith("\\\\?\\"):
-        long_name = "\\\\?\\" + long_name
-    buf_size = GetShortPathNameW(long_name, None, 0)
+    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_name[4:])
+        raise WindowsError(err_no, FormatError(err_no), long_path)
     output = create_unicode_buffer(buf_size)
-    GetShortPathNameW(long_name, output, buf_size)
-    return output.value[4:]  # Remove '\\?\' for SHFileOperationW
+    GetShortPathNameW(long_path, output, buf_size)
+    return get_awaited_path_from_prefix(prefix, output.value)
 
 
 def send2trash(paths):

setup.py

@@ -24,7 +24,7 @@ with open("README.rst", "rt") as f1, open("CHANGES.rst", "rt") as f2:
 
 setup(
     name="Send2Trash",
-    version="1.7.0a1",
+    version="1.7.1",
     author="Andrew Senetar",
     author_email="arsenetar@voltaicideas.net",
     packages=["send2trash"],