/brz/remove-bazaar

# Copyright (C) 2005-2016 Canonical Ltd, 2017 Bazaar developers

#

# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

from __future__ import absolute_import

import io

from .. import (

    ui,

)

from ..ui import text as ui_text

from ..sixish import (

    text_type,

)

class StringIOWithEncoding(io.StringIO):

    encoding = "ascii"

    def write(self, string):

        if isinstance(string, bytes):

            string = string.decode(self.encoding)

        io.StringIO.write(self, string)

class BytesIOWithEncoding(io.BytesIO):

    encoding = "ascii"

class StringIOAsTTY(StringIOWithEncoding):

    """A helper class which makes a StringIO look like a terminal"""

    def isatty(self):

        return True

class TextUIFactory(ui_text.TextUIFactory):

    def __init__(self, stdin=None, stdout=None, stderr=None):

        if isinstance(stdin, bytes):

            stdin = stdin.decode()

        if isinstance(stdin, text_type):

            stdin = StringIOWithEncoding(stdin)

        if stdout is None:

            stdout = StringIOWithEncoding()

        if stderr is None:

            stderr = StringIOWithEncoding()

        super(TextUIFactory, self).__init__(stdin, stdout, stderr)

class TestUIFactory(TextUIFactory):

    """A UI Factory for testing.

    Hide the progress bar but emit note()s.

    Redirect stdin.

    Allows get_password to be tested without real tty attached.

    See also CannedInputUIFactory which lets you provide programmatic input in

    a structured way.

    """

    # TODO: Capture progress events at the model level and allow them to be

    # observed by tests that care.

    #

    # XXX: Should probably unify more with CannedInputUIFactory or a

    # particular configuration of TextUIFactory, or otherwise have a clearer

    # idea of how they're supposed to be different.

    # See https://bugs.launchpad.net/bzr/+bug/408213

    def get_non_echoed_password(self):

        """Get password from stdin without trying to handle the echo mode"""

        password = self.stdin.readline()

        if not password:

            raise EOFError

        if password[-1] == '\n':

            password = password[:-1]

        return password

    def make_progress_view(self):

        return ui.NullProgressView()