62
61
# paints progress, network activity, etc
63
62
self._progress_view = self.make_progress_view()
64
def be_quiet(self, state):
65
if state and not self._quiet:
67
UIFactory.be_quiet(self, state)
68
self._progress_view = self.make_progress_view()
65
70
def clear_term(self):
66
71
"""Prepare the terminal for output.
138
152
def make_progress_view(self):
139
153
"""Construct and return a new ProgressView subclass for this UI.
141
# if the user specifically requests either text or no progress bars,
142
# always do that. otherwise, guess based on $TERM and tty presence.
143
if os.environ.get('BZR_PROGRESS_BAR') == 'text':
155
# with --quiet, never any progress view
156
# <https://bugs.edge.launchpad.net/bzr/+bug/320035>. Otherwise if the
157
# user specifically requests either text or no progress bars, always
158
# do that. otherwise, guess based on $TERM and tty presence.
160
return NullProgressView()
161
elif os.environ.get('BZR_PROGRESS_BAR') == 'text':
144
162
return TextProgressView(self.stderr)
145
163
elif os.environ.get('BZR_PROGRESS_BAR') == 'none':
146
164
return NullProgressView()
150
168
return NullProgressView()
170
def _make_output_stream_explicit(self, encoding, encoding_type):
171
if encoding_type == 'exact':
172
# force sys.stdout to be binary stream on win32;
173
# NB: this leaves the file set in that mode; may cause problems if
174
# one process tries to do binary and then text output
175
if sys.platform == 'win32':
176
fileno = getattr(self.stdout, 'fileno', None)
179
msvcrt.setmode(fileno(), os.O_BINARY)
180
return TextUIOutputStream(self, self.stdout)
182
encoded_stdout = codecs.getwriter(encoding)(self.stdout,
183
errors=encoding_type)
184
# For whatever reason codecs.getwriter() does not advertise its encoding
185
# it just returns the encoding of the wrapped file, which is completely
186
# bogus. So set the attribute, so we can find the correct encoding later.
187
encoded_stdout.encoding = encoding
188
return TextUIOutputStream(self, encoded_stdout)
152
190
def note(self, msg):
153
191
"""Write an already-formatted message, clearing the progress bar if necessary."""
154
192
self.clear_term()
176
214
self._progress_view.show_transport_activity(transport,
177
215
direction, byte_count)
217
def log_transport_activity(self, display=False):
218
"""See UIFactory.log_transport_activity()"""
219
log = getattr(self._progress_view, 'log_transport_activity', None)
223
def show_error(self, msg):
225
self.stderr.write("bzr: error: %s\n" % msg)
227
def show_message(self, msg):
230
def show_warning(self, msg):
232
self.stderr.write("bzr: warning: %s\n" % msg)
179
234
def _progress_updated(self, task):
180
235
"""A task has been updated and wants to be displayed.
183
238
warnings.warn("%r updated but no tasks are active" %
185
240
elif task != self._task_stack[-1]:
186
warnings.warn("%r is not the top progress task %r" %
187
(task, self._task_stack[-1]))
241
# We used to check it was the top task, but it's hard to always
242
# get this right and it's not necessarily useful: any actual
243
# problems will be evident in use
244
#warnings.warn("%r is not the top progress task %r" %
245
# (task, self._task_stack[-1]))
188
247
self._progress_view.show_progress(task)
190
249
def _progress_all_finished(self):
222
278
self._last_task = None
223
279
self._total_byte_count = 0
224
280
self._bytes_since_update = 0
281
self._bytes_by_direction = {'unknown': 0, 'read': 0, 'write': 0}
282
self._first_byte_time = None
225
283
self._fraction = 0
284
# force the progress bar to be off, as at the moment it doesn't
285
# correspond reliably to overall command progress
286
self.enable_bar = False
227
288
def _show_line(self, s):
228
289
# sys.stderr.write("progress %r\n" % s)
230
self._term_file.write('\r%-*.*s\r' % (n, n, s))
290
width = osutils.terminal_width()
291
if width is not None:
292
# we need one extra space for terminals that wrap on last char
294
s = '%-*.*s' % (width, width, s)
295
self._term_file.write('\r' + s + '\r')
233
298
if self._have_output:
326
392
This may update a progress bar, spinner, or similar display.
327
393
By default it does nothing.
329
# XXX: Probably there should be a transport activity model, and that
330
# too should be seen by the progress view, rather than being poked in
332
if not self._have_output:
333
# As a workaround for <https://launchpad.net/bugs/321935> we only
334
# show transport activity when there's already a progress bar
335
# shown, which time the application code is expected to know to
336
# clear off the progress bar when it's going to send some other
337
# output. Eventually it would be nice to have that automatically
395
# XXX: there should be a transport activity model, and that too should
396
# be seen by the progress view, rather than being poked in here.
340
397
self._total_byte_count += byte_count
341
398
self._bytes_since_update += byte_count
399
if self._first_byte_time is None:
400
# Note that this isn't great, as technically it should be the time
401
# when the bytes started transferring, not when they completed.
402
# However, we usually start with a small request anyway.
403
self._first_byte_time = time.time()
404
if direction in self._bytes_by_direction:
405
self._bytes_by_direction[direction] += byte_count
407
self._bytes_by_direction['unknown'] += byte_count
408
if 'no_activity' in debug.debug_flags:
409
# Can be used as a workaround if
410
# <https://launchpad.net/bugs/321935> reappears and transport
411
# activity is cluttering other output. However, thanks to
412
# TextUIOutputStream this shouldn't be a problem any more.
342
414
now = time.time()
343
415
if self._total_byte_count < 2000:
344
416
# a little resistance at first, so it doesn't stay stuck at 0
349
421
elif now >= (self._transport_update_time + 0.5):
350
422
# guard against clock stepping backwards, and don't update too
352
rate = self._bytes_since_update / (now - self._transport_update_time)
353
msg = ("%6dKB %5dKB/s" %
354
(self._total_byte_count>>10, int(rate)>>10,))
424
rate = (self._bytes_since_update
425
/ (now - self._transport_update_time))
426
# using base-10 units (see HACKING.txt).
427
msg = ("%6dkB %5dkB/s" %
428
(self._total_byte_count / 1000, int(rate) / 1000,))
355
429
self._transport_update_time = now
356
430
self._last_repaint = now
357
431
self._bytes_since_update = 0
358
432
self._last_transport_msg = msg
435
def _format_bytes_by_direction(self):
436
if self._first_byte_time is None:
439
transfer_time = time.time() - self._first_byte_time
440
if transfer_time < 0.001:
441
transfer_time = 0.001
442
bps = self._total_byte_count / transfer_time
444
# using base-10 units (see HACKING.txt).
445
msg = ('Transferred: %.0fkB'
446
' (%.1fkB/s r:%.0fkB w:%.0fkB'
447
% (self._total_byte_count / 1000.,
449
self._bytes_by_direction['read'] / 1000.,
450
self._bytes_by_direction['write'] / 1000.,
452
if self._bytes_by_direction['unknown'] > 0:
453
msg += ' u:%.0fkB)' % (
454
self._bytes_by_direction['unknown'] / 1000.
460
def log_transport_activity(self, display=False):
461
msg = self._format_bytes_by_direction()
463
if display and self._total_byte_count > 0:
465
self._term_file.write(msg + '\n')
468
class TextUIOutputStream(object):
469
"""Decorates an output stream so that the terminal is cleared before writing.
471
This is supposed to ensure that the progress bar does not conflict with bulk
474
# XXX: this does not handle the case of writing part of a line, then doing
475
# progress bar output: the progress bar will probably write over it.
476
# one option is just to buffer that text until we have a full line;
477
# another is to save and restore it
479
# XXX: might need to wrap more methods
481
def __init__(self, ui_factory, wrapped_stream):
482
self.ui_factory = ui_factory
483
self.wrapped_stream = wrapped_stream
484
# this does no transcoding, but it must expose the underlying encoding
485
# because some callers need to know what can be written - see for
486
# example unescape_for_display.
487
self.encoding = getattr(wrapped_stream, 'encoding', None)
490
self.ui_factory.clear_term()
491
self.wrapped_stream.flush()
493
def write(self, to_write):
494
self.ui_factory.clear_term()
495
self.wrapped_stream.write(to_write)
497
def writelines(self, lines):
498
self.ui_factory.clear_term()
499
self.wrapped_stream.writelines(lines)