Repository navigation
Expand file tree
/
Copy pathcurtsies.py
More file actions
290 lines (247 loc) · 8.84 KB
/
Copy pathcurtsies.py
File metadata and controls
290 lines (247 loc) · 8.84 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
# To gradually migrate to mypy we aren't setting these globally yet
# mypy: disallow_untyped_defs=True
# mypy: disallow_untyped_calls=True
import argparse
import collections
import logging
import sys
import curtsies
import curtsies.events
import curtsies.input
import curtsies.window
from . import args as bpargs, translations, inspection
from .config import Config
from .curtsiesfrontend import events
from .curtsiesfrontend.coderunner import SystemExitFromCodeRunner
from .curtsiesfrontend.interpreter import Interp
from .curtsiesfrontend.repl import BaseRepl
from .repl import extract_exit_value
from .translations import _
from typing import (
Any,
Callable,
Dict,
Generator,
List,
Optional,
Protocol,
Sequence,
Tuple,
Union,
)
logger = logging.getLogger(__name__)
class SupportsEventGeneration(Protocol):
def send(
self, timeout: Optional[float]
) -> Union[str, curtsies.events.Event, None]: ...
def __iter__(self) -> "SupportsEventGeneration": ...
def __next__(self) -> Union[str, curtsies.events.Event, None]: ...
class FullCurtsiesRepl(BaseRepl):
def __init__(
self,
config: Config,
locals_: Optional[Dict[str, Any]] = None,
banner: Optional[str] = None,
interp: Optional[Interp] = None,
) -> None:
self.input_generator = curtsies.input.Input(
keynames="curtsies", sigint_event=True, paste_threshold=None
)
window = curtsies.window.CursorAwareWindow(
sys.stdout,
sys.stdin,
keep_last_line=True,
hide_cursor=False,
extra_bytes_callback=self.input_generator.unget_bytes,
)
self._request_refresh_callback: Callable[[], None] = (
self.input_generator.event_trigger(events.RefreshRequestEvent)
)
self._schedule_refresh_callback = (
self.input_generator.scheduled_event_trigger(
events.ScheduledRefreshRequestEvent
)
)
self._request_reload_callback = (
self.input_generator.threadsafe_event_trigger(events.ReloadEvent)
)
self._interrupting_refresh_callback = (
self.input_generator.threadsafe_event_trigger(lambda: None)
)
self._request_undo_callback = self.input_generator.event_trigger(
events.UndoEvent
)
with self.input_generator:
pass # temp hack to get .original_stty
super().__init__(
config,
window,
locals_=locals_,
banner=banner,
interp=interp,
orig_tcattrs=self.input_generator.original_stty,
)
def _request_refresh(self) -> None:
return self._request_refresh_callback()
def _schedule_refresh(self, when: float) -> None:
return self._schedule_refresh_callback(when)
def _request_reload(self, files_modified: Sequence[str]) -> None:
return self._request_reload_callback(files_modified=files_modified)
def interrupting_refresh(self) -> None:
return self._interrupting_refresh_callback()
def request_undo(self, n: int = 1) -> None:
return self._request_undo_callback(n=n)
def get_term_hw(self) -> Tuple[int, int]:
return self.window.get_term_hw()
def get_cursor_vertical_diff(self) -> int:
return self.window.get_cursor_vertical_diff()
def get_top_usable_line(self) -> int:
return self.window.top_usable_row
def on_suspend(self) -> None:
self.window.__exit__(None, None, None)
self.input_generator.__exit__(None, None, None)
def after_suspend(self) -> None:
self.input_generator.__enter__()
self.window.__enter__()
self.interrupting_refresh()
def process_event_and_paint(
self, e: Union[str, curtsies.events.Event, None]
) -> None:
"""If None is passed in, just paint the screen"""
try:
if e is not None:
self.process_event(e)
except (SystemExitFromCodeRunner, SystemExit) as err:
array, cursor_pos = self.paint(
about_to_exit=True,
user_quit=isinstance(err, SystemExitFromCodeRunner),
)
scrolled = self.window.render_to_terminal(array, cursor_pos)
self.scroll_offset += scrolled
raise
else:
array, cursor_pos = self.paint()
scrolled = self.window.render_to_terminal(array, cursor_pos)
self.scroll_offset += scrolled
def mainloop(
self,
interactive: bool = True,
paste: Optional[curtsies.events.PasteEvent] = None,
) -> None:
if interactive:
# Add custom help command
# TODO: add methods to run the code
self.initialize_interp()
# run startup file
self.process_event(events.RunStartupFileEvent())
# handle paste
if paste:
self.process_event(paste)
# do a display before waiting for first event
self.process_event_and_paint(None)
inputs = combined_events(self.input_generator)
while self.module_gatherer.find_coroutine():
e = inputs.send(0)
if e is not None:
self.process_event_and_paint(e)
for e in inputs:
self.process_event_and_paint(e)
def main(
args: Optional[List[str]] = None,
locals_: Optional[Dict[str, Any]] = None,
banner: Optional[str] = None,
welcome_message: Optional[str] = None,
) -> Any:
"""
banner is displayed directly after the version information.
welcome_message is passed on to Repl and displayed in the statusbar.
"""
translations.init()
def curtsies_arguments(parser: argparse._ArgumentGroup) -> None:
parser.add_argument(
"--paste",
"-p",
action="store_true",
help=_("start by pasting lines of a file into session"),
)
config, options, exec_args = bpargs.parse(
args,
(
_("curtsies arguments"),
_("Additional arguments specific to the curtsies-based REPL."),
curtsies_arguments,
),
)
interp = None
paste = None
exit_value: Tuple[Any, ...] = ()
if exec_args:
if not options:
raise ValueError("don't pass in exec_args without options")
if options.paste:
paste = curtsies.events.PasteEvent()
encoding = inspection.get_encoding_file(exec_args[0])
with open(exec_args[0], encoding=encoding) as f:
sourcecode = f.read()
paste.events.extend(sourcecode)
else:
try:
interp = Interp(locals=locals_)
bpargs.exec_code(interp, exec_args)
except SystemExit as e:
exit_value = e.args
if not options.interactive:
return extract_exit_value(exit_value)
else:
# expected for interactive sessions (vanilla python does it)
sys.path.insert(0, "")
if not options.quiet:
print(bpargs.version_banner())
if banner is not None:
print(banner)
repl = FullCurtsiesRepl(config, locals_, welcome_message, interp)
try:
with repl.input_generator:
with repl.window as win:
with repl:
repl.height, repl.width = win.t.height, win.t.width
repl.mainloop(True, paste)
except (SystemExitFromCodeRunner, SystemExit) as e:
exit_value = e.args
return extract_exit_value(exit_value)
def _combined_events(
event_provider: SupportsEventGeneration, paste_threshold: int
) -> Generator[Union[str, curtsies.events.Event, None], Optional[float], None]:
"""Combines consecutive keypress events into paste events."""
timeout = yield "nonsense_event" # so send can be used immediately
queue: collections.deque = collections.deque()
while True:
e = event_provider.send(timeout)
if isinstance(e, curtsies.events.Event):
timeout = yield e
continue
elif e is None:
timeout = yield None
continue
else:
queue.append(e)
e = event_provider.send(0)
while not (e is None or isinstance(e, curtsies.events.Event)):
queue.append(e)
e = event_provider.send(0)
if len(queue) >= paste_threshold:
paste = curtsies.events.PasteEvent()
paste.events.extend(queue)
queue.clear()
timeout = yield paste
else:
while len(queue):
timeout = yield queue.popleft()
def combined_events(
event_provider: SupportsEventGeneration, paste_threshold: int = 3
) -> SupportsEventGeneration:
g = _combined_events(event_provider, paste_threshold)
next(g)
return g
if __name__ == "__main__":
sys.exit(main())