147
126
raise NotImplementedError(self.get_password)
152
def make_output_stream(self, encoding=None, encoding_type=None):
153
"""Get a stream for sending out bulk text data.
155
This is used for commands that produce bulk text, such as log or diff
156
output, as opposed to user interaction. This should work even for
157
non-interactive user interfaces. Typically this goes to a decorated
158
version of stdout, but in a GUI it might be appropriate to send it to a
159
window displaying the text.
161
:param encoding: Unicode encoding for output; default is the
162
terminal encoding, which may be different from the user encoding.
163
(See get_terminal_encoding.)
165
:param encoding_type: How to handle encoding errors:
166
replace/strict/escape/exact. Default is replace.
168
# XXX: is the caller supposed to close the resulting object?
170
encoding = osutils.get_terminal_encoding()
171
if encoding_type is None:
172
encoding_type = 'replace'
173
out_stream = self._make_output_stream_explicit(encoding, encoding_type)
176
def _make_output_stream_explicit(self, encoding, encoding_type):
177
raise NotImplementedError("%s doesn't support make_output_stream"
178
% (self.__class__.__name__))
180
128
def nested_progress_bar(self):
181
129
"""Return a nested progress bar.
291
def log_transport_activity(self, display=False):
292
"""Write out whatever transport activity has been measured.
294
Implementations are allowed to do nothing, but it is useful if they can
295
write a line to the log file.
297
:param display: If False, only log to disk, if True also try to display
298
a message to the user.
301
# Default implementation just does nothing
304
def show_user_warning(self, warning_id, **message_args):
305
"""Show a warning to the user.
307
This is specifically for things that are under the user's control (eg
308
outdated formats), not for internal program warnings like deprecated
311
This can be overridden by UIFactory subclasses to show it in some
312
appropriate way; the default UIFactory is noninteractive and does
313
nothing. format_user_warning maps it to a string, though other
314
presentations can be used for particular UIs.
316
:param warning_id: An identifier like 'cross_format_fetch' used to
317
check if the message is suppressed and to look up the string.
318
:param message_args: Arguments to be interpolated into the message.
322
def show_error(self, msg):
323
"""Show an error message (not an exception) to the user.
325
The message should not have an error prefix or trailing newline. That
326
will be added by the factory if appropriate.
328
raise NotImplementedError(self.show_error)
330
def show_message(self, msg):
331
"""Show a message to the user."""
332
raise NotImplementedError(self.show_message)
334
def show_warning(self, msg):
335
"""Show a warning to the user."""
336
raise NotImplementedError(self.show_warning)
338
def warn_cross_format_fetch(self, from_format, to_format):
339
"""Warn about a potentially slow cross-format transfer.
341
This is deprecated in favor of show_user_warning, but retained for api
342
compatibility in 2.0 and 2.1.
344
self.show_user_warning('cross_format_fetch', from_format=from_format,
347
def warn_experimental_format_fetch(self, inter):
348
"""Warn about fetching into experimental repository formats."""
349
if inter.target._format.experimental:
350
trace.warning("Fetching into experimental format %s.\n"
351
"This format may be unreliable or change in the future "
352
"without an upgrade path.\n" % (inter.target._format,))
213
class CLIUIFactory(UIFactory):
214
"""Deprecated in favor of TextUIFactory."""
216
@deprecated_method(deprecated_in((1, 18, 0)))
217
def __init__(self, stdin=None, stdout=None, stderr=None):
218
UIFactory.__init__(self)
219
self.stdin = stdin or sys.stdin
220
self.stdout = stdout or sys.stdout
221
self.stderr = stderr or sys.stderr
223
_accepted_boolean_strings = dict(y=True, n=False, yes=True, no=False)
225
def get_boolean(self, prompt):
227
self.prompt(prompt + "? [y/n]: ")
228
line = self.stdin.readline()
229
line = line.rstrip('\n')
230
val = bool_from_string(line, self._accepted_boolean_strings)
234
def get_non_echoed_password(self):
235
isatty = getattr(self.stdin, 'isatty', None)
236
if isatty is not None and isatty():
237
# getpass() ensure the password is not echoed and other
238
# cross-platform niceties
239
password = getpass.getpass('')
241
# echo doesn't make sense without a terminal
242
password = self.stdin.readline()
245
elif password[-1] == '\n':
246
password = password[:-1]
249
def get_password(self, prompt='', **kwargs):
250
"""Prompt the user for a password.
252
:param prompt: The prompt to present the user
253
:param kwargs: Arguments which will be expanded into the prompt.
254
This lets front ends display different things if
256
:return: The password string, return None if the user
257
canceled the request.
260
self.prompt(prompt, **kwargs)
261
# There's currently no way to say 'i decline to enter a password'
262
# as opposed to 'my password is empty' -- does it matter?
263
return self.get_non_echoed_password()
265
def get_username(self, prompt, **kwargs):
266
"""Prompt the user for a username.
268
:param prompt: The prompt to present the user
269
:param kwargs: Arguments which will be expanded into the prompt.
270
This lets front ends display different things if
272
:return: The username string, return None if the user
273
canceled the request.
276
self.prompt(prompt, **kwargs)
277
username = self.stdin.readline()
280
elif username[-1] == '\n':
281
username = username[:-1]
284
def prompt(self, prompt, **kwargs):
285
"""Emit prompt on the CLI.
287
:param kwargs: Dictionary of arguments to insert into the prompt,
288
to allow UIs to reformat the prompt.
291
# See <https://launchpad.net/bugs/365891>
292
prompt = prompt % kwargs
293
prompt = prompt.encode(osutils.get_terminal_encoding(), 'replace')
295
self.stderr.write(prompt)
298
"""Write an already-formatted message."""
299
self.stdout.write(msg + '\n')
356
302
class SilentUIFactory(UIFactory):
397
331
def get_boolean(self, prompt):
398
332
return self.responses.pop(0)
400
def get_integer(self, prompt):
401
return self.responses.pop(0)
403
334
def get_password(self, prompt='', **kwargs):
404
335
return self.responses.pop(0)
406
337
def get_username(self, prompt, **kwargs):
407
338
return self.responses.pop(0)
409
340
def assert_all_input_consumed(self):
410
341
if self.responses:
411
342
raise AssertionError("expected all input in %r to be consumed"
346
@deprecated_function(deprecated_in((1, 18, 0)))
347
def clear_decorator(func, *args, **kwargs):
348
"""Decorator that clears the term"""
349
ui_factory.clear_term()
350
func(*args, **kwargs)
415
353
ui_factory = SilentUIFactory()
416
354
# IMPORTANT: never import this symbol directly. ONLY ever access it as
417
355
# ui.ui_factory, so that you refer to the current value.
added
removed
bzrlib/ui/__init__.py
