1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# Created By: Virgil Dupras
# Created On: 2006/02/21
# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
# which should be included with this package. The terms are also available at
# http://www.gnu.org/licenses/gpl-3.0.html
import logging
from functools import wraps
from inspect import signature
from pathlib import Path
def pathify(f):
"""Ensure that every annotated :class:`Path` arguments are actually paths.
When a function is decorated with ``@pathify``, every argument with annotated as Path will be
converted to a Path if it wasn't already. Example::
@pathify
def foo(path: Path, otherarg):
return path.listdir()
Calling ``foo('/bar', 0)`` will convert ``'/bar'`` to ``Path('/bar')``.
"""
sig = signature(f)
pindexes = {i for i, p in enumerate(sig.parameters.values()) if p.annotation is Path}
pkeys = {k: v for k, v in sig.parameters.items() if v.annotation is Path}
def path_or_none(p):
return None if p is None else Path(p)
@wraps(f)
def wrapped(*args, **kwargs):
args = tuple((path_or_none(a) if i in pindexes else a) for i, a in enumerate(args))
kwargs = {k: (path_or_none(v) if k in pkeys else v) for k, v in kwargs.items()}
return f(*args, **kwargs)
return wrapped
def log_io_error(func):
"""Catches OSError, IOError and WindowsError and log them"""
@wraps(func)
def wrapper(path, *args, **kwargs):
try:
return func(path, *args, **kwargs)
except OSError as e:
msg = 'Error "{0}" during operation "{1}" on "{2}": "{3}"'
classname = e.__class__.__name__
funcname = func.__name__
logging.warning(msg.format(classname, funcname, str(path), str(e)))
return wrapper
|
