File Explorer

1# Copyright (C) 2004 Igor Belyi <belyi@users.sourceforge.net>2# Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>3#4#    This library is free software; you can redistribute it and/or5#    modify it under the terms of the GNU Lesser General Public6#    License as published by the Free Software Foundation; either7#    version 2.1 of the License, or (at your option) any later version.8#9#    This library is distributed in the hope that it will be useful,10#    but WITHOUT ANY WARRANTY; without even the implied warranty of11#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU12#    Lesser General Public License for more details.13#14#    You should have received a copy of the GNU Lesser General Public15#    License along with this library; if not, write to the Free Software16#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA17 18from __future__ import absolute_import, print_function, unicode_literals19 20from getpass import getpass21 22del absolute_import, print_function, unicode_literals23 24 25def passphrase_stdin(hint, desc, prev_bad, hook=None):26    """This is a sample callback that will read a passphrase from27    the terminal.  The hook here, if present, will be used to describe28    why the passphrase is needed."""29    why = ''30    if hook is not None:31        why = ' ' + hook32    if prev_bad:33        why += ' (again)'34    print("Please supply %s' password%s:" % (hint, why))35    return getpass()36 37 38def progress_stdout(what, type, current, total, hook=None):39    print("PROGRESS UPDATE: what = %s, type = %d, current = %d, total = %d" %40          (what, type, current, total))41 42 43def readcb_fh(count, hook):44    """A callback for data.  hook should be a Python file-like object."""45    if count:46        # Should return '' on EOF47        return hook.read(count)48    else:49        # Wants to rewind.50        if not hasattr(hook, 'seek'):51            return None52        hook.seek(0, 0)53        return None54