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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare

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Current Path : /var/lib/python-support/python2.7/reportbug/

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Current File : //var/lib/python-support/python2.7/reportbug/tempfiles.py

#
# tempfiles module - Temporary file handling for reportbug
#   Written by Chris Lawrence <lawrencc@debian.org>
#   (C) 1999-2008 Chris Lawrence
#   Copyright (C) 2008-2012 Sandro Tosi <morph@debian.org>
#
# This program is freely distributable per the following license:
#
##  Permission to use, copy, modify, and distribute this software and its
##  documentation for any purpose and without fee is hereby granted,
##  provided that the above copyright notice appears in all copies and that
##  both that copyright notice and this permission notice appear in
##  supporting documentation.
##
##  I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
##  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL I
##  BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
##  DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
##  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
##  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
##  SOFTWARE.

import os
import tempfile
import time

def tempfile_prefix(package=None, extra=None):
    if extra:
        if package:
            package = '%s-%s' % (package, extra)
        else:
            package = extra

    if package:
        return 'reportbug-%s-%s-%d-' % (
            package, time.strftime('%Y%m%d'), os.getpid())
    return 'reportbug-%s-%d-' % (time.strftime('%Y%m%d'), os.getpid())

template = tempfile_prefix()

# Derived version of mkstemp that returns a Python file object
_text_openflags = os.O_RDWR | os.O_CREAT | os.O_EXCL
if hasattr(os, 'O_NOINHERIT'):
    _text_openflags |= os.O_NOINHERIT
if hasattr(os, 'O_NOFOLLOW'):
    _text_openflags |= os.O_NOFOLLOW

_bin_openflags = _text_openflags
if hasattr(os, 'O_BINARY'):
    _bin_openflags |= os.O_BINARY

# Safe open, prevents filename races in shared tmp dirs
# Based on python-1.5.2/Lib/tempfile.py
def open_write_safe(filename, mode='w+b', bufsize=-1):
    if 'b' in mode:
        fd = os.open(filename, _bin_openflags, 0600)
    else:
        fd = os.open(filename, _text_openflags, 0600)

    try:
        return os.fdopen(fd, mode, bufsize)
    except:
        os.close(fd)
        raise

# Wrapper for mkstemp; main difference is that text defaults to True, and it
# returns a Python file object instead of an os-level file descriptor
def TempFile(suffix="", prefix=template, dir=None, text=True,
             mode="w+", bufsize=-1):
    fh, filename = tempfile.mkstemp(suffix, prefix, dir, text)
    fd = os.fdopen(fh, mode, bufsize)
    return (fd, filename)

def cleanup_temp_file(temp_filename):
    """ Clean up a temporary file.

        :parameters:
          `temp_filename`
            Full filename of the file to clean up.

        :return value:
            None

        Removes (unlinks) the named file if it exists.

        """
    if os.path.exists(temp_filename):
        os.unlink(temp_filename)

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