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dupeguru/hscommon/conflict.py
Virgil Dupras 10dbfa9b38 Refactoring: Path API compatibility with pathlib
Refactored dupeGuru to make hscommon.path's API a bit close to pathlib's
API. It's not 100% compatible yet, but it's much better than before.

This is more of a hscommon refactoring than a dupeguru one, but since
duepGuru is the main user of Path, it was the driver behind the
refactoring.

This refactoring also see the introduction of @pathify, which ensure
Path arguments. Previously, we were often unsure of whether the caller
of a function was passing a Path or a str. This problem is now solved
and this allows us to remove hscommon.io, an ill-conceived attempt to
solve that same ambiguity problem.

Fixes #235.
2013-11-16 12:06:16 -05:00

66 lines
2.2 KiB
Python

# Created By: Virgil Dupras
# Created On: 2008-01-08
# Copyright 2013 Hardcoded Software (http://www.hardcoded.net)
# 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
import re
import os
import shutil
from .path import Path, pathify
#This matches [123], but not [12] (3 digits being the minimum).
#It also matches [1234] [12345] etc..
#And only at the start of the string
re_conflict = re.compile(r'^\[\d{3}\d*\] ')
def get_conflicted_name(other_names, name):
"""Returns name with a [000] number in front of it.
The number between brackets depends on how many conlicted filenames
there already are in other_names.
"""
name = get_unconflicted_name(name)
if name not in other_names:
return name
i = 0
while True:
newname = '[%03d] %s' % (i, name)
if newname not in other_names:
return newname
i += 1
def get_unconflicted_name(name):
return re_conflict.sub('',name,1)
def is_conflicted(name):
return re_conflict.match(name) is not None
@pathify
def _smart_move_or_copy(operation, source_path: Path, dest_path: Path):
''' Use move() or copy() to move and copy file with the conflict management, but without the
slowness of the fs system.
'''
if dest_path.isdir() and not source_path.isdir():
dest_path = dest_path[source_path.name]
if dest_path.exists():
filename = dest_path.name
dest_dir_path = dest_path.parent()
newname = get_conflicted_name(os.listdir(str(dest_dir_path)), filename)
dest_path = dest_dir_path[newname]
operation(str(source_path), str(dest_path))
def smart_move(source_path, dest_path):
_smart_move_or_copy(shutil.move, source_path, dest_path)
def smart_copy(source_path, dest_path):
try:
_smart_move_or_copy(shutil.copy, source_path, dest_path)
except IOError as e:
if e.errno in {21, 13}: # it's a directory, code is 21 on OS X / Linux and 13 on Windows
_smart_move_or_copy(shutil.copytree, source_path, dest_path)
else:
raise