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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Text progress bar library, like curl or scp.
import sys, datetime, time
class ProgressBar(object):
def __init__(self, label, limit, label_width=12):
self.label = label
self.limit = limit
self.label_width = label_width
self.cur = 0
self.t0 = datetime.datetime.utcnow()
self.fullwidth = None
self.barlen = 64 - self.label_width
self.fmt = '\r%-' + str(label_width) + 's %3d%% %-' + str(self.barlen) + 's| %6.1fs'
def update(self, value):
self.cur = value
pct = int(100.0 * self.cur / self.limit)
barlen = int(1.0 * self.barlen * self.cur / self.limit) - 1
bar = '='*barlen + '>'
dt = datetime.datetime.utcnow() - self.t0
dt = dt.seconds + dt.microseconds * 1e-6
line = self.fmt%(self.label[:self.label_width], pct, bar, dt)
self.fullwidth = len(line)
sys.stdout.write(line)
sys.stdout.flush()
# Clear the current bar and leave the cursor at the start of the line.
def clear(self):
if (self.fullwidth):
sys.stdout.write('\r' + ' ' * self.fullwidth + '\r')
self.fullwidth = None
def finish(self):
self.update(self.limit)
sys.stdout.write('\n')
if __name__ == '__main__':
pb = ProgressBar('test', 12)
for i in range(12):
pb.update(i)
time.sleep(0.5)
pb.finish()
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