15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
18
"""Text UI, write output to the console.
26
28
from bzrlib.lazy_import import lazy_import
27
29
lazy_import(globals(), """
30
30
from bzrlib import (
38
from bzrlib.ui import CLIUIFactory
41
class TextUIFactory(CLIUIFactory):
40
from bzrlib.ui import (
46
class TextUIFactory(UIFactory):
42
47
"""A UI factory for Text user interefaces."""
49
53
"""Create a TextUIFactory.
51
:param bar_type: The type of progress bar to create. It defaults to
52
letting the bzrlib.progress.ProgressBar factory auto
55
super(TextUIFactory, self).__init__(stdin=stdin,
56
stdout=stdout, stderr=stderr)
58
symbol_versioning.warn(symbol_versioning.deprecated_in((1, 11, 0))
59
% "bar_type parameter")
55
super(TextUIFactory, self).__init__()
56
# TODO: there's no good reason not to pass all three streams, maybe we
57
# should deprecate the default values...
60
61
# paints progress, network activity, etc
61
self._progress_view = TextProgressView(self.stderr)
62
self._progress_view = self.make_progress_view()
63
def prompt(self, prompt):
64
"""Emit prompt on the CLI."""
65
self.stdout.write(prompt)
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()
67
70
def clear_term(self):
68
71
"""Prepare the terminal for output.
75
78
# to clear it. We might need to separately check for the case of
76
79
self._progress_view.clear()
81
def get_boolean(self, prompt):
83
self.prompt(prompt + "? [y/n]: ")
84
line = self.stdin.readline().lower()
85
if line in ('y\n', 'yes\n'):
87
elif line in ('n\n', 'no\n'):
89
elif line in ('', None):
90
# end-of-file; possibly should raise an error here instead
93
def get_integer(self, prompt):
96
line = self.stdin.readline()
102
def get_non_echoed_password(self):
103
isatty = getattr(self.stdin, 'isatty', None)
104
if isatty is not None and isatty():
105
# getpass() ensure the password is not echoed and other
106
# cross-platform niceties
107
password = getpass.getpass('')
109
# echo doesn't make sense without a terminal
110
password = self.stdin.readline()
113
elif password[-1] == '\n':
114
password = password[:-1]
117
def get_password(self, prompt='', **kwargs):
118
"""Prompt the user for a password.
120
:param prompt: The prompt to present the user
121
:param kwargs: Arguments which will be expanded into the prompt.
122
This lets front ends display different things if
124
:return: The password string, return None if the user
125
canceled the request.
128
self.prompt(prompt, **kwargs)
129
# There's currently no way to say 'i decline to enter a password'
130
# as opposed to 'my password is empty' -- does it matter?
131
return self.get_non_echoed_password()
133
def get_username(self, prompt, **kwargs):
134
"""Prompt the user for a username.
136
:param prompt: The prompt to present the user
137
:param kwargs: Arguments which will be expanded into the prompt.
138
This lets front ends display different things if
140
:return: The username string, return None if the user
141
canceled the request.
144
self.prompt(prompt, **kwargs)
145
username = self.stdin.readline()
148
elif username[-1] == '\n':
149
username = username[:-1]
152
def make_progress_view(self):
153
"""Construct and return a new ProgressView subclass for this UI.
155
# with --quiet, never any progress view
156
# <https://bugs.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':
162
return TextProgressView(self.stderr)
163
elif os.environ.get('BZR_PROGRESS_BAR') == 'none':
164
return NullProgressView()
165
elif progress._supports_progress(self.stderr):
166
return TextProgressView(self.stderr)
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)
78
190
def note(self, msg):
79
191
"""Write an already-formatted message, clearing the progress bar if necessary."""
81
193
self.stdout.write(msg + '\n')
195
def prompt(self, prompt, **kwargs):
196
"""Emit prompt on the CLI.
198
:param kwargs: Dictionary of arguments to insert into the prompt,
199
to allow UIs to reformat the prompt.
202
# See <https://launchpad.net/bugs/365891>
203
prompt = prompt % kwargs
204
prompt = prompt.encode(osutils.get_terminal_encoding(), 'replace')
206
self.stderr.write(prompt)
83
208
def report_transport_activity(self, transport, byte_count, direction):
84
209
"""Called by transports as they do IO.
86
211
This may update a progress bar, spinner, or similar display.
87
212
By default it does nothing.
89
self._progress_view._show_transport_activity(transport,
214
self._progress_view.show_transport_activity(transport,
90
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
if isinstance(msg, unicode):
233
te = osutils.get_terminal_encoding()
234
msg = msg.encode(te, 'replace')
235
self.stderr.write("bzr: warning: %s\n" % msg)
92
237
def _progress_updated(self, task):
93
238
"""A task has been updated and wants to be displayed.
96
241
warnings.warn("%r updated but no tasks are active" %
98
243
elif task != self._task_stack[-1]:
99
warnings.warn("%r is not the top progress task %r" %
100
(task, self._task_stack[-1]))
244
# We used to check it was the top task, but it's hard to always
245
# get this right and it's not necessarily useful: any actual
246
# problems will be evident in use
247
#warnings.warn("%r is not the top progress task %r" %
248
# (task, self._task_stack[-1]))
101
250
self._progress_view.show_progress(task)
103
252
def _progress_all_finished(self):
104
253
self._progress_view.clear()
255
def show_user_warning(self, warning_id, **message_args):
256
"""Show a text message to the user.
258
Explicitly not for warnings about bzr apis, deprecations or internals.
260
# eventually trace.warning should migrate here, to avoid logging and
261
# be easier to test; that has a lot of test fallout so for now just
262
# new code can call this
263
if warning_id not in self.suppressed_warnings:
264
self.stderr.write(self.format_user_warning(warning_id, message_args) +
107
268
class TextProgressView(object):
108
269
"""Display of progress bar and other information on a tty.
222
401
self._last_repaint = now
225
def _show_transport_activity(self, transport, direction, byte_count):
404
def show_transport_activity(self, transport, direction, byte_count):
226
405
"""Called by transports via the ui_factory, as they do IO.
228
407
This may update a progress bar, spinner, or similar display.
229
408
By default it does nothing.
231
# XXX: Probably there should be a transport activity model, and that
232
# too should be seen by the progress view, rather than being poked in
410
# XXX: there should be a transport activity model, and that too should
411
# be seen by the progress view, rather than being poked in here.
234
412
self._total_byte_count += byte_count
235
413
self._bytes_since_update += byte_count
414
if self._first_byte_time is None:
415
# Note that this isn't great, as technically it should be the time
416
# when the bytes started transferring, not when they completed.
417
# However, we usually start with a small request anyway.
418
self._first_byte_time = time.time()
419
if direction in self._bytes_by_direction:
420
self._bytes_by_direction[direction] += byte_count
422
self._bytes_by_direction['unknown'] += byte_count
423
if 'no_activity' in debug.debug_flags:
424
# Can be used as a workaround if
425
# <https://launchpad.net/bugs/321935> reappears and transport
426
# activity is cluttering other output. However, thanks to
427
# TextUIOutputStream this shouldn't be a problem any more.
236
429
now = time.time()
430
if self._total_byte_count < 2000:
431
# a little resistance at first, so it doesn't stay stuck at 0
432
# while connecting...
237
434
if self._transport_update_time is None:
238
435
self._transport_update_time = now
239
436
elif now >= (self._transport_update_time + 0.5):
240
437
# guard against clock stepping backwards, and don't update too
242
rate = self._bytes_since_update / (now - self._transport_update_time)
243
scheme = getattr(transport, '_scheme', None) or repr(transport)
244
if direction == 'read':
246
elif direction == 'write':
250
msg = ("%.7s %s %6dKB %5dKB/s" %
251
(scheme, dir_char, self._total_byte_count>>10, int(rate)>>10,))
439
rate = (self._bytes_since_update
440
/ (now - self._transport_update_time))
441
# using base-10 units (see HACKING.txt).
442
msg = ("%6dkB %5dkB/s" %
443
(self._total_byte_count / 1000, int(rate) / 1000,))
252
444
self._transport_update_time = now
253
445
self._last_repaint = now
254
446
self._bytes_since_update = 0
255
447
self._last_transport_msg = msg
450
def _format_bytes_by_direction(self):
451
if self._first_byte_time is None:
454
transfer_time = time.time() - self._first_byte_time
455
if transfer_time < 0.001:
456
transfer_time = 0.001
457
bps = self._total_byte_count / transfer_time
459
# using base-10 units (see HACKING.txt).
460
msg = ('Transferred: %.0fkB'
461
' (%.1fkB/s r:%.0fkB w:%.0fkB'
462
% (self._total_byte_count / 1000.,
464
self._bytes_by_direction['read'] / 1000.,
465
self._bytes_by_direction['write'] / 1000.,
467
if self._bytes_by_direction['unknown'] > 0:
468
msg += ' u:%.0fkB)' % (
469
self._bytes_by_direction['unknown'] / 1000.
475
def log_transport_activity(self, display=False):
476
msg = self._format_bytes_by_direction()
478
if display and self._total_byte_count > 0:
480
self._term_file.write(msg + '\n')
483
class TextUIOutputStream(object):
484
"""Decorates an output stream so that the terminal is cleared before writing.
486
This is supposed to ensure that the progress bar does not conflict with bulk
489
# XXX: this does not handle the case of writing part of a line, then doing
490
# progress bar output: the progress bar will probably write over it.
491
# one option is just to buffer that text until we have a full line;
492
# another is to save and restore it
494
# XXX: might need to wrap more methods
496
def __init__(self, ui_factory, wrapped_stream):
497
self.ui_factory = ui_factory
498
self.wrapped_stream = wrapped_stream
499
# this does no transcoding, but it must expose the underlying encoding
500
# because some callers need to know what can be written - see for
501
# example unescape_for_display.
502
self.encoding = getattr(wrapped_stream, 'encoding', None)
505
self.ui_factory.clear_term()
506
self.wrapped_stream.flush()
508
def write(self, to_write):
509
self.ui_factory.clear_term()
510
self.wrapped_stream.write(to_write)
512
def writelines(self, lines):
513
self.ui_factory.clear_term()
514
self.wrapped_stream.writelines(lines)
added
removed
bzrlib/ui/text.py
