49
48
TODO: Is there anything that gets a better update when the window
50
49
is resized while the program is running?
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53
return int(os.environ['COLUMNS'])
54
54
except (IndexError, KeyError, ValueError):
70
def ProgressBar(to_file=sys.stderr, **kwargs):
71
"""Abstract factory"""
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if _supports_progress(to_file):
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return TTYProgressBar(to_file=to_file, **kwargs)
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return DotsProgressBar(to_file=to_file, **kwargs)
78
class _BaseProgressBar(object):
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self.to_file = to_file
91
self.last_total = None
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self.show_pct = show_pct
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self.show_spinner = show_spinner
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self.show_eta = show_eta
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self.show_bar = show_bar
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self.show_count = show_count
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class DummyProgress(_BaseProgressBar):
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"""Progress-bar standin that does nothing.
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This can be used as the default argument for methods that
104
take an optional progress indicator."""
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def update(self, msg=None, current=None, total=None):
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class DotsProgressBar(_BaseProgressBar):
116
def __init__(self, **kwargs):
117
_BaseProgressBar.__init__(self, **kwargs)
124
def update(self, msg=None, current_cnt=None, total_cnt=None):
125
if msg and msg != self.last_msg:
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self.to_file.write('\n')
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self.to_file.write(msg + ': ')
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self.to_file.write('.')
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self.to_file.write('\n')
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class TTYProgressBar(_BaseProgressBar):
71
class ProgressBar(object):
140
72
"""Progress bar display object.
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74
Several options are available to control the display. These can
159
91
SPIN_CHARS = r'/-\|'
160
92
MIN_PAUSE = 0.1 # seconds
163
def __init__(self, **kwargs):
164
_BaseProgressBar.__init__(self, **kwargs)
104
object.__init__(self)
105
self.to_file = to_file
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self.suppressed = not _supports_progress(self.to_file)
165
107
self.spin_pos = 0
111
self.last_total = None
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self.show_pct = show_pct
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self.show_spinner = show_spinner
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self.show_eta = show_eta
115
self.show_bar = show_bar
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self.show_count = show_count
166
118
self.width = _width()
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self.start_time = None
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self.last_update = None
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"""Return True if the bar was updated too recently"""
174
if self.start_time is None:
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self.start_time = self.last_update = now
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interval = now - self.last_update
179
if interval > 0 and interval < self.MIN_PAUSE:
182
self.last_update = now
191
126
def update(self, msg, current_cnt=None, total_cnt=None):
192
127
"""Update and redraw progress bar."""
194
131
# save these for the tick() function
195
132
self.last_msg = msg
196
133
self.last_cnt = current_cnt
197
134
self.last_total = total_cnt
137
if self.start_time is None:
138
self.start_time = now
140
interval = now - self.last_update
141
if interval > 0 and interval < self.MIN_PAUSE:
144
self.last_update = now
203
147
assert current_cnt <= total_cnt
320
print 'dumb-terminal test:'
321
pb = DotsProgressBar()
323
pb.update('Leoparden', i, 99)
329
print 'smart-terminal test:'
265
from time import sleep
330
266
pb = ProgressBar(show_pct=True, show_bar=True, show_spinner=False)
331
267
for i in range(100):
332
268
pb.update('Elephanten', i, 99)