You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

59 lines
2.0 KiB

# This file contains functions taken from the user interface of the beet
# tool (http://beets.radbox.org).
#
# Copyright 2013, Adrian Sampson.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
import locale
import sys
from ConfigParser import NoOptionError
class UserError(Exception):
"""UI exception. Commands should throw this in order to display
nonrecoverable errors to the user.
"""
pass
def _encoding(config):
"""Tries to guess the encoding used by the terminal."""
# Configured override?
try:
return config.get('papers', 'terminal-encoding')
except NoOptionError:
# Determine from locale settings.
try:
return locale.getdefaultlocale()[1] or 'utf8'
except ValueError:
# Invalid locale environment variable setting. To avoid
# failing entirely for no good reason, assume UTF-8.
return 'utf8'
def input_():
"""Get input and decodes the result to a Unicode string.
Raises a UserError if stdin is not available. The prompt is sent to
stdout rather than stderr. A printed between the prompt and the
input cursor.
"""
# raw_input incorrectly sends prompts to stderr, not stdout, so we
# use print() explicitly to display prompts.
# http://bugs.python.org/issue1927
try:
resp = raw_input()
except EOFError:
raise UserError('stdin stream ended while input required')
return resp.decode(sys.stdin.encoding or 'utf8', 'ignore')