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# Copyright 2010 Lars Wirzenius
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import ttystatus
class ByteSize(ttystatus.Widget):
'''Display data size in bytes, KiB, etc.'''
static_width = False
def __init__(self, name):
self.name = name
self._bytes = 0
def update(self, ts):
self._bytes = ts[self.name]
def render(self, width):
units = (
(1024 ** 4, 2, 'TiB'),
(1024 ** 3, 2, 'GiB'),
(1024 ** 2, 2, 'MiB'),
(1024 ** 1, 1, 'KiB'),
)
for factor, decimals, unit in units:
if self._bytes >= factor:
return '%.*f %s' % (decimals,
float(self._bytes) / float(factor),
unit)
return '%d B' % self._bytes
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