Source code for nxpy.core.path

# nxpy.core package ----------------------------------------------------

# Copyright Nicola Musatti 2013 - 2014
# Use, modification, and distribution are subject to the Boost Software
# License, Version 1.0. (See accompanying file LICENSE.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)

# See http://nxpy.sourceforge.net for library home page. ---------------------

r"""
filesystem related utilities.

"""

import logging
import os
import shutil
import stat


def _on_error(func, path, ex_info):
    r"""Error handler for :py:func:`shutil.rmtree`."""
    try:
        mode = os.stat(path).st_mode
        if not stat.S_ISLNK(mode):
            os.chmod(path, mode | stat.S_IWRITE)
            if stat.S_ISDIR(mode):
                os.rmdir(path)
            else:
                os.remove(path)
        return
    except:
        pass
    logging.error(path + ": not removed")


def blasttree(dir_):
    r"""Removes a directory more stubbornly than :py:func:`shutil.rmtree`.

    Required on filesystems that do not allow removal of non-writable files
    
    """
    shutil.rmtree(dir_, ignore_errors=False, onerror=_on_error)