seth vidal wrote:
>His complaint about the lack of a progress bar for downloads is
>legitimate and it's my fault.
>
>
In attachment good (i think) class for display progressbars.
--
..............................................................
IRC: irc.freenode.net #asplinux Grigory Bakunov
ICQ: 51369901 ASPLinux Development Team
Life would be so much easier if
we could just look at the source code.
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#!/usr/bin/env python
"""progressbar abstraction
License: LGPL
Authors: Vladimir Bormotov <bor@xxxxxxxx>, Grigory Bakunov <black@xxxxxxxxxxx>
"""
import sys
HASHES = 32
FMT_PROGRESS = '\r [%3d%%] %s %s'
# example: ' [100%] #####----------- extrastring'
class progress:
"""progressbar base class
sys.stdout support
"""
def __init__(self, total=None, amount=0, hashes=HASHES):
"""init progressbar with given total valie
optional values:
amount - initial progress amount
hashes - max hashes in bar, default HASHES
"""
self.fmt = FMT_PROGRESS
self.hashes = hashes
self.total = total
self._index = amount
if not(total is None):
self.delta = self.total / self.hashes
self.next(amount)
# else You can init self.total, self.delta manually
def inc(self, extra=''):
"""move to next step and redraw progressbar"""
self._index = self._index + 1
self.draw(self._index, extra)
def next(self, amount):
"""evalute percentage and number of hashes"""
self.amount = amount
self.percent = (self.amount * 100L) / self.total
self.graph = int(self.hashes / 100.0 * self.percent)
def need_redraw(self, amount):
"""true if need redraw progressbar
check new amount iz bigger then last amount on delta
"""
return (amount - self.amount) > self.delta
def draw_next(self, extra=''):
"""draw next progressbar state"""
_p_bar = '#' * self.graph + '-' * (self.hashes - self.graph)
sys.stdout.write(self.fmt % (self.percent, _p_bar, extra))
sys.stdout.flush()
def draw_final(self):
"""draw newline character"""
sys.stdout.write('\n')
sys.stdout.flush()
def draw(self, amount, extra=''):
"""draw progressbar with given amount"""
if self.need_redraw(amount):
self.next(amount)
self.draw_next(extra)
if amount >= self.total:
self.next(amount)
self.draw_next(extra)
self.draw_final()
class progress_debug_final(progress):
"""progressbar with debug output at final"""
def draw_final(self):
"""write self.amount:self.total at final"""
sys.stdout.write(' %s:%s' % (self.amount, self.total))
progress.draw_final(self)
if __name__ == '__main__':
import time
print 'test for progress() class'
_pr = progress(199)
for _idx in range(200):
_pr.draw(_idx, 'progress label')
time.sleep(0.02)
_pr.draw_final()
# vim: set et ts=4 :
