~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005 Canonical Ltd

# 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 2 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, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Text UI, write output to the console.

"""

import getpass

import sys

import bzrlib.progress

from bzrlib.ui import UIFactory

class TextUIFactory(UIFactory):

    def progress_bar(self):

        # this in turn is abstract, and creates either a tty or dots

        # bar depending on what we think of the terminal

        return bzrlib.progress.ProgressBar()

    def get_password(self, prompt='', **kwargs):

        """Prompt the user for a password.

        :param prompt: The prompt to present the user

        :param kwargs: Arguments which will be expanded into the prompt.

                       This lets front ends display different things if

                       they so choose.

        :return: The password string, return None if the user 

                 canceled the request.

        """

        prompt = (prompt % kwargs).encode(sys.stdout.encoding, 'replace')

        prompt += ': '

        try:

            return getpass.getpass(prompt)

        except KeyboardInterrupt:

            return None