1
# Copyright (C) 2005-2010 Canonical Ltd
1
# Copyright (C) 2005, 2008, 2009 Canonical Ltd
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
62
59
self.stderr = stderr
63
60
# paints progress, network activity, etc
64
61
self._progress_view = self.make_progress_view()
65
# hook up the signals to watch for terminal size changes
68
def be_quiet(self, state):
69
if state and not self._quiet:
71
UIFactory.be_quiet(self, state)
72
self._progress_view = self.make_progress_view()
74
63
def clear_term(self):
75
64
"""Prepare the terminal for output.
156
145
def make_progress_view(self):
157
146
"""Construct and return a new ProgressView subclass for this UI.
159
# with --quiet, never any progress view
160
# <https://bugs.edge.launchpad.net/bzr/+bug/320035>. Otherwise if the
161
# user specifically requests either text or no progress bars, always
162
# do that. otherwise, guess based on $TERM and tty presence.
164
return NullProgressView()
165
elif os.environ.get('BZR_PROGRESS_BAR') == 'text':
148
# if the user specifically requests either text or no progress bars,
149
# always do that. otherwise, guess based on $TERM and tty presence.
150
if os.environ.get('BZR_PROGRESS_BAR') == 'text':
166
151
return TextProgressView(self.stderr)
167
152
elif os.environ.get('BZR_PROGRESS_BAR') == 'none':
168
153
return NullProgressView()
218
203
self._progress_view.show_transport_activity(transport,
219
204
direction, byte_count)
221
def log_transport_activity(self, display=False):
222
"""See UIFactory.log_transport_activity()"""
223
log = getattr(self._progress_view, 'log_transport_activity', None)
227
206
def show_error(self, msg):
228
207
self.clear_term()
229
208
self.stderr.write("bzr: error: %s\n" % msg)
242
221
warnings.warn("%r updated but no tasks are active" %
244
223
elif task != self._task_stack[-1]:
245
# We used to check it was the top task, but it's hard to always
246
# get this right and it's not necessarily useful: any actual
247
# problems will be evident in use
248
#warnings.warn("%r is not the top progress task %r" %
249
# (task, self._task_stack[-1]))
224
warnings.warn("%r is not the top progress task %r" %
225
(task, self._task_stack[-1]))
251
226
self._progress_view.show_progress(task)
253
228
def _progress_all_finished(self):
254
229
self._progress_view.clear()
256
def show_user_warning(self, warning_id, **message_args):
257
"""Show a text message to the user.
259
Explicitly not for warnings about bzr apis, deprecations or internals.
261
# eventually trace.warning should migrate here, to avoid logging and
262
# be easier to test; that has a lot of test fallout so for now just
263
# new code can call this
264
if warning_id not in self.suppressed_warnings:
265
self.stderr.write(self.format_user_warning(warning_id, message_args) +
269
232
class TextProgressView(object):
270
233
"""Display of progress bar and other information on a tty.
294
257
self._last_task = None
295
258
self._total_byte_count = 0
296
259
self._bytes_since_update = 0
297
self._bytes_by_direction = {'unknown': 0, 'read': 0, 'write': 0}
298
self._first_byte_time = None
299
260
self._fraction = 0
300
261
# force the progress bar to be off, as at the moment it doesn't
301
262
# correspond reliably to overall command progress
408
369
This may update a progress bar, spinner, or similar display.
409
370
By default it does nothing.
411
# XXX: there should be a transport activity model, and that too should
412
# be seen by the progress view, rather than being poked in here.
413
self._total_byte_count += byte_count
414
self._bytes_since_update += byte_count
415
if self._first_byte_time is None:
416
# Note that this isn't great, as technically it should be the time
417
# when the bytes started transferring, not when they completed.
418
# However, we usually start with a small request anyway.
419
self._first_byte_time = time.time()
420
if direction in self._bytes_by_direction:
421
self._bytes_by_direction[direction] += byte_count
423
self._bytes_by_direction['unknown'] += byte_count
372
# XXX: Probably there should be a transport activity model, and that
373
# too should be seen by the progress view, rather than being poked in
424
375
if 'no_activity' in debug.debug_flags:
425
376
# Can be used as a workaround if
426
377
# <https://launchpad.net/bugs/321935> reappears and transport
427
378
# activity is cluttering other output. However, thanks to
428
379
# TextUIOutputStream this shouldn't be a problem any more.
381
self._total_byte_count += byte_count
382
self._bytes_since_update += byte_count
430
383
now = time.time()
431
384
if self._total_byte_count < 2000:
432
385
# a little resistance at first, so it doesn't stay stuck at 0
437
390
elif now >= (self._transport_update_time + 0.5):
438
391
# guard against clock stepping backwards, and don't update too
440
rate = (self._bytes_since_update
441
/ (now - self._transport_update_time))
442
# using base-10 units (see HACKING.txt).
443
msg = ("%6dkB %5dkB/s" %
444
(self._total_byte_count / 1000, int(rate) / 1000,))
393
rate = self._bytes_since_update / (now - self._transport_update_time)
394
msg = ("%6dKB %5dKB/s" %
395
(self._total_byte_count>>10, int(rate)>>10,))
445
396
self._transport_update_time = now
446
397
self._last_repaint = now
447
398
self._bytes_since_update = 0
448
399
self._last_transport_msg = msg
451
def _format_bytes_by_direction(self):
452
if self._first_byte_time is None:
455
transfer_time = time.time() - self._first_byte_time
456
if transfer_time < 0.001:
457
transfer_time = 0.001
458
bps = self._total_byte_count / transfer_time
460
# using base-10 units (see HACKING.txt).
461
msg = ('Transferred: %.0fkB'
462
' (%.1fkB/s r:%.0fkB w:%.0fkB'
463
% (self._total_byte_count / 1000.,
465
self._bytes_by_direction['read'] / 1000.,
466
self._bytes_by_direction['write'] / 1000.,
468
if self._bytes_by_direction['unknown'] > 0:
469
msg += ' u:%.0fkB)' % (
470
self._bytes_by_direction['unknown'] / 1000.
476
def log_transport_activity(self, display=False):
477
msg = self._format_bytes_by_direction()
479
if display and self._total_byte_count > 0:
481
self._term_file.write(msg + '\n')
484
403
class TextUIOutputStream(object):
485
404
"""Decorates an output stream so that the terminal is cleared before writing.