Source code for ligo.skymap.util.file
#
# Copyright (C) 2018-2019 Leo Singer
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
"""File tools."""
import errno
import os
import shutil
import tempfile
[docs]
def rename(src, dst):
"""Like `os.rename`, but works across different devices because it
catches and handles ``EXDEV`` (``Invalid cross-device link``) errors.
"""
try:
os.rename(src, dst)
except OSError as e:
if e.errno == errno.EXDEV:
dir, suffix = os.path.split(dst)
tmpfid, tmpdst = tempfile.mkstemp(dir=dir, suffix=suffix)
try:
os.close(tmpfid)
shutil.copy2(src, tmpdst)
os.rename(tmpdst, dst)
except: # noqa: E722
os.remove(tmpdst)
raise
else:
raise
[docs]
def rm_f(filename):
"""Remove a file, or be silent if the file does not exist, like ``rm -f``.
Examples
--------
>>> with tempfile.TemporaryDirectory() as d:
... rm_f('test')
... with open('test', 'w') as f:
... print('Hello world', file=f)
... rm_f('test')
"""
try:
os.remove(filename)
except FileNotFoundError:
pass