js/src/gdb/progressbar.py

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/gdb/progressbar.py	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,48 @@
     1.4 +# This Source Code Form is subject to the terms of the Mozilla Public
     1.5 +# License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 +# file, You can obtain one at http://mozilla.org/MPL/2.0/.
     1.7 +
     1.8 +# Text progress bar library, like curl or scp.
     1.9 +
    1.10 +import sys, datetime
    1.11 +
    1.12 +class ProgressBar(object):
    1.13 +    def __init__(self, label, limit, label_width=12):
    1.14 +        self.label = label
    1.15 +        self.limit = limit
    1.16 +        self.label_width = label_width
    1.17 +        self.cur = 0
    1.18 +        self.t0 = datetime.datetime.now()
    1.19 +        self.fullwidth = None
    1.20 +
    1.21 +        self.barlen = 64 - self.label_width
    1.22 +        self.fmt = '\r%-' + str(label_width) + 's %3d%% %-' + str(self.barlen) + 's| %6.1fs'
    1.23 +
    1.24 +    def update(self, value):
    1.25 +        self.cur = value
    1.26 +        pct = int(100.0 * self.cur / self.limit)
    1.27 +        barlen = int(1.0 * self.barlen * self.cur / self.limit) - 1
    1.28 +        bar = '='*barlen + '>'
    1.29 +        dt = datetime.datetime.now() - self.t0
    1.30 +        dt = dt.seconds + dt.microseconds * 1e-6
    1.31 +        line = self.fmt%(self.label[:self.label_width], pct, bar, dt)
    1.32 +        self.fullwidth = len(line)
    1.33 +        sys.stdout.write(line)
    1.34 +        sys.stdout.flush()
    1.35 +
    1.36 +    # Clear the current bar and leave the cursor at the start of the line.
    1.37 +    def clear(self):
    1.38 +        if (self.fullwidth):
    1.39 +            sys.stdout.write('\r' + ' ' * self.fullwidth + '\r')
    1.40 +            self.fullwidth = None
    1.41 +
    1.42 +    def finish(self):
    1.43 +        self.update(self.limit)
    1.44 +        sys.stdout.write('\n')
    1.45 +
    1.46 +if __name__ == '__main__':
    1.47 +    pb = ProgressBar('test', 12)
    1.48 +    for i in range(12):
    1.49 +        pb.update(i)
    1.50 +        time.sleep(0.5)
    1.51 +    pb.finish()

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