179
186
self.ui_factory.clear_term()
189
@deprecated_function(deprecated_in((1, 16, 0)))
190
def ProgressBar(to_file=None, **kwargs):
191
"""Construct a progress bar.
193
Deprecated; ask the ui_factory for a progress task instead.
197
requested_bar_type = os.environ.get('BZR_PROGRESS_BAR')
198
# An value of '' or not set reverts to standard processing
199
if requested_bar_type in (None, ''):
200
if _supports_progress(to_file):
201
return TTYProgressBar(to_file=to_file, **kwargs)
203
return DummyProgress(to_file=to_file, **kwargs)
205
# Minor sanitation to prevent spurious errors
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requested_bar_type = requested_bar_type.lower().strip()
207
# TODO: jam 20060710 Arguably we shouldn't raise an exception
208
# but should instead just disable progress bars if we
209
# don't recognize the type
210
if requested_bar_type not in _progress_bar_types:
211
raise errors.InvalidProgressBarType(requested_bar_type,
212
_progress_bar_types.keys())
213
return _progress_bar_types[requested_bar_type](to_file=to_file, **kwargs)
182
216
# NOTE: This is also deprecated; you should provide a ProgressView instead.
183
217
class _BaseProgressBar(object):
255
291
return DummyProgress(**kwargs)
294
class DotsProgressBar(_BaseProgressBar):
296
@deprecated_function(deprecated_in((1, 16, 0)))
297
def __init__(self, **kwargs):
298
_BaseProgressBar.__init__(self, **kwargs)
305
def update(self, msg=None, current_cnt=None, total_cnt=None):
306
if msg and msg != self.last_msg:
308
self.to_file.write('\n')
309
self.to_file.write(msg + ': ')
312
self.to_file.write('.')
316
self.to_file.write('\n')
319
def child_update(self, message, current, total):
323
class TTYProgressBar(_BaseProgressBar):
324
"""Progress bar display object.
326
Several options are available to control the display. These can
327
be passed as parameters to the constructor or assigned at any time:
330
Show percentage complete.
332
Show rotating baton. This ticks over on every update even
333
if the values don't change.
335
Show predicted time-to-completion.
339
Show numerical counts.
341
The output file should be in line-buffered or unbuffered mode.
345
@deprecated_function(deprecated_in((1, 16, 0)))
346
def __init__(self, **kwargs):
347
from bzrlib.osutils import terminal_width
348
_BaseProgressBar.__init__(self, **kwargs)
350
self.width = terminal_width()
351
self.last_updates = []
352
self._max_last_updates = 10
353
self.child_fraction = 0
354
self._have_output = False
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def throttle(self, old_msg):
357
"""Return True if the bar was updated too recently"""
358
# time.time consistently takes 40/4000 ms = 0.01 ms.
359
# time.clock() is faster, but gives us CPU time, not wall-clock time
361
if self.start_time is not None and (now - self.start_time) < 1:
363
if old_msg != self.last_msg:
365
interval = now - self.last_update
367
if interval < self.MIN_PAUSE:
370
self.last_updates.append(now - self.last_update)
371
# Don't let the queue grow without bound
372
self.last_updates = self.last_updates[-self._max_last_updates:]
373
self.last_update = now
377
self.update(self.last_msg, self.last_cnt, self.last_total,
380
def child_update(self, message, current, total):
381
if current is not None and total != 0:
382
child_fraction = float(current) / total
383
if self.last_cnt is None:
385
elif self.last_cnt + child_fraction <= self.last_total:
386
self.child_fraction = child_fraction
387
if self.last_msg is None:
391
def update(self, msg, current_cnt=None, total_cnt=None,
393
"""Update and redraw progress bar.
398
if total_cnt is None:
399
total_cnt = self.last_total
404
if current_cnt > total_cnt:
405
total_cnt = current_cnt
407
## # optional corner case optimisation
408
## # currently does not seem to fire so costs more than saved.
409
## # trivial optimal case:
410
## # NB if callers are doing a clear and restore with
411
## # the saved values, this will prevent that:
412
## # in that case add a restore method that calls
413
## # _do_update or some such
414
## if (self.last_msg == msg and
415
## self.last_cnt == current_cnt and
416
## self.last_total == total_cnt and
417
## self.child_fraction == child_fraction):
423
old_msg = self.last_msg
424
# save these for the tick() function
426
self.last_cnt = current_cnt
427
self.last_total = total_cnt
428
self.child_fraction = child_fraction
430
# each function call takes 20ms/4000 = 0.005 ms,
431
# but multiple that by 4000 calls -> starts to cost.
432
# so anything to make this function call faster
433
# will improve base 'diff' time by up to 0.1 seconds.
434
if self.throttle(old_msg):
437
if self.show_eta and self.start_time and self.last_total:
438
eta = get_eta(self.start_time, self.last_cnt + self.child_fraction,
439
self.last_total, last_updates = self.last_updates)
440
eta_str = " " + str_tdelta(eta)
444
if self.show_spinner:
445
spin_str = self.SPIN_CHARS[self.spin_pos % 4] + ' '
449
# always update this; it's also used for the bar
452
if self.show_pct and self.last_total and self.last_cnt:
453
pct = 100.0 * ((self.last_cnt + self.child_fraction) / self.last_total)
454
pct_str = ' (%5.1f%%)' % pct
458
if not self.show_count:
460
elif self.last_cnt is None:
462
elif self.last_total is None:
463
count_str = ' %i' % (self.last_cnt)
465
# make both fields the same size
466
t = '%i' % (self.last_total)
467
c = '%*i' % (len(t), self.last_cnt)
468
count_str = ' ' + c + '/' + t
471
# progress bar, if present, soaks up all remaining space
472
cols = self.width - 1 - len(self.last_msg) - len(spin_str) - len(pct_str) \
473
- len(eta_str) - len(count_str) - 3
476
# number of markers highlighted in bar
477
markers = int(round(float(cols) *
478
(self.last_cnt + self.child_fraction) / self.last_total))
479
bar_str = '[' + ('=' * markers).ljust(cols) + '] '
481
# don't know total, so can't show completion.
482
# so just show an expanded spinning thingy
483
m = self.spin_pos % cols
484
ms = (' ' * m + '*').ljust(cols)
486
bar_str = '[' + ms + '] '
492
m = spin_str + bar_str + self.last_msg + count_str \
494
self.to_file.write('\r%-*.*s' % (self.width - 1, self.width - 1, m))
495
self._have_output = True
496
#self.to_file.flush()
499
if self._have_output:
500
self.to_file.write('\r%s\r' % (' ' * (self.width - 1)))
501
self._have_output = False
502
#self.to_file.flush()
507
class ChildProgress(_BaseProgressBar):
508
"""A progress indicator that pushes its data to the parent"""
510
@deprecated_function(deprecated_in((1, 16, 0)))
511
def __init__(self, _stack, **kwargs):
512
_BaseProgressBar.__init__(self, _stack=_stack, **kwargs)
513
self.parent = _stack.top()
516
self.child_fraction = 0
519
def update(self, msg, current_cnt=None, total_cnt=None):
520
self.current = current_cnt
521
if total_cnt is not None:
522
self.total = total_cnt
524
self.child_fraction = 0
527
def child_update(self, message, current, total):
528
if current is None or total == 0:
529
self.child_fraction = 0
531
self.child_fraction = float(current) / total
535
if self.current is None:
538
count = self.current+self.child_fraction
539
if count > self.total:
541
mutter('clamping count of %d to %d' % (count, self.total))
543
self.parent.child_update(self.message, count, self.total)
548
def note(self, *args, **kwargs):
549
self.parent.note(*args, **kwargs)
258
552
def str_tdelta(delt):