po: Updated Dutch translation (translated by Erwin Poeze).
# -*- coding: UTF-8 -*-
# Copyright (c) 2010 - 2012, Pascal Volk
# See COPYING for distribution information.
"""
VirtualMailManager.cli
~~~~~~~~~~~~~~~~~~~~~~
VirtualMailManager's command line interface.
"""
import os
from array import array
from fcntl import ioctl
from getpass import getpass
from termios import TIOCGWINSZ
from VirtualMailManager import ENCODING
from VirtualMailManager.constants import VMM_TOO_MANY_FAILURES
from VirtualMailManager.errors import VMMError
__all__ = ('prog', 'get_winsize', 'read_pass', 'w_err', 'w_std')
_ = lambda msg: msg
_std_write = os.sys.stdout.write
_err_write = os.sys.stderr.write
prog = os.path.basename(os.sys.argv[0])
def w_std(*args):
"""Writes a line for each arg of *args*, encoded in the current
ENCODING, to stdout.
"""
_std_write('\n'.join(a.encode(ENCODING, 'replace') for a in args) + '\n')
def w_err(code, *args):
"""Writes a line for each arg of *args*, encoded in the current
ENCODING, to stderr.
This function optionally interrupts the program execution if *code*
does not equal to 0. *code* will be used as the system exit status.
"""
_err_write('\n'.join(a.encode(ENCODING, 'replace') for a in args) + '\n')
if code:
os.sys.exit(code)
def get_winsize():
"""Returns a tuple of integers ``(ws_row, ws_col)`` with the height and
width of the terminal."""
fd = None
for dev in (os.sys.stdout, os.sys.stderr, os.sys.stdin):
if hasattr(dev, 'fileno') and os.isatty(dev.fileno()):
fd = dev.fileno()
break
if fd is None: # everything seems to be redirected
# fall back to environment or assume some common defaults
ws_row, ws_col = 24, 80
try:
ws_col = int(os.environ.get('COLUMNS', 80))
ws_row = int(os.environ.get('LINES', 24))
except ValueError:
pass
return ws_row, ws_col
#"struct winsize" with the ``unsigned short int``s ws_{row,col,{x,y}pixel}
ws = array('H', (0, 0, 0, 0))
ioctl(fd, TIOCGWINSZ, ws, True)
ws_row, ws_col = ws[:2]
return ws_row, ws_col
def read_pass():
"""Interactive 'password chat', returns the password in plain format.
Throws a VMMError after the third failure.
"""
# TP: Please preserve the trailing space.
readp_msg0 = _(u'Enter new password: ').encode(ENCODING, 'replace')
# TP: Please preserve the trailing space.
readp_msg1 = _(u'Retype new password: ').encode(ENCODING, 'replace')
mismatched = True
failures = 0
while mismatched:
if failures > 2:
raise VMMError(_(u'Too many failures - try again later.'),
VMM_TOO_MANY_FAILURES)
clear0 = getpass(prompt=readp_msg0)
clear1 = getpass(prompt=readp_msg1)
if clear0 != clear1:
failures += 1
w_err(0, _(u'Sorry, passwords do not match.'))
continue
if not clear0:
failures += 1
w_err(0, _(u'Sorry, empty passwords are not permitted.'))
continue
mismatched = False
return clear0
del _