-
-
Notifications
You must be signed in to change notification settings - Fork 252
Expand file tree
/
Copy pathcli.py
More file actions
1600 lines (1304 loc) · 49.2 KB
/
cli.py
File metadata and controls
1600 lines (1304 loc) · 49.2 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
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/env python
#
# The MIT License
#
# Copyright (c) 2008 Bob Farrell
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
from __future__ import division, with_statement
import os
import sys
import curses
import math
import re
import time
import inspect
import signal
import struct
import termios
import fcntl
import unicodedata
import errno
from locale import LC_ALL, getpreferredencoding, setlocale
from types import ModuleType
# These are used for syntax hilighting.
from pygments import format
from pygments.formatters import TerminalFormatter
from pygments.lexers import PythonLexer
from pygments.token import Token
from bpython.formatter import BPythonFormatter
# This for completion
from bpython import inspection
from bpython import importcompletion
# This for config
from bpython.config import Struct
# This for keys
from bpython.keys import key_dispatch
from bpython.pager import page
from bpython.repl import Interpreter, Repl
import bpython.args
def log(x):
f = open('/tmp/bpython.log', 'a')
f.write('%s\n' % (x,))
py3 = sys.version_info[0] == 3
stdscr = None
def calculate_screen_lines(tokens, width, cursor=0):
"""Given a stream of tokens and a screen width plus an optional
initial cursor position, return the amount of needed lines on the
screen."""
lines = 1
pos = cursor
for (token, value) in tokens:
if token is Token.Text and value == '\n':
lines += 1
else:
pos += len(value)
lines += pos // width
pos %= width
return lines
class FakeStdin(object):
"""Provide a fake stdin type for things like raw_input() etc."""
def __init__(self, interface):
"""Take the curses Repl on init and assume it provides a get_key method
which, fortunately, it does."""
self.encoding = getpreferredencoding()
self.interface = interface
self.buffer = list()
def __iter__(self):
return iter(self.readlines())
def flush(self):
"""Flush the internal buffer. This is a no-op. Flushing stdin
doesn't make any sense anyway."""
def write(self, value):
# XXX IPython expects sys.stdin.write to exist, there will no doubt be
# others, so here's a hack to keep them happy
raise IOError(errno.EBADF, "sys.stdin is read-only")
def isatty(self):
return True
def readline(self, size=-1):
"""I can't think of any reason why anything other than readline would
be useful in the context of an interactive interpreter so this is the
only one I've done anything with. The others are just there in case
someone does something weird to stop it from blowing up."""
if not size:
return ''
elif self.buffer:
buffer = self.buffer.pop(0)
else:
buffer = ''
curses.raw(True)
try:
while not buffer.endswith('\n'):
key = self.interface.get_key()
if key in [curses.erasechar(), 'KEY_BACKSPACE']:
y, x = self.interface.scr.getyx()
if buffer:
self.interface.scr.delch(y, x - 1)
buffer = buffer[:-1]
continue
elif key == chr(4) and not buffer:
# C-d
return ''
elif (key != '\n' and
(len(key) > 1 or unicodedata.category(key) == 'Cc')):
continue
sys.stdout.write(key)
# Include the \n in the buffer - raw_input() seems to deal with trailing
# linebreaks and will break if it gets an empty string.
buffer += key
finally:
curses.raw(False)
if size > 0:
rest = buffer[size:]
if rest:
self.buffer.append(rest)
buffer = buffer[:size]
if py3:
return buffer
else:
return buffer.encode(getpreferredencoding())
def read(self, size=None):
if size == 0:
return ''
data = list()
while size is None or size > 0:
line = self.readline(size or -1)
if not line:
break
if size is not None:
size -= len(line)
data.append(line)
return ''.join(data)
def readlines(self, size=-1):
return list(iter(self.readline, ''))
DO_RESIZE = False
# TODO:
#
# Tab completion does not work if not at the end of the line.
#
# Numerous optimisations can be made but it seems to do all the lookup stuff
# fast enough on even my crappy server so I'm not too bothered about that
# at the moment.
#
# The popup window that displays the argspecs and completion suggestions
# needs to be an instance of a ListWin class or something so I can wrap
# the addstr stuff to a higher level.
#
def DEBUG(s):
"""This shouldn't ever be called in any release of bpython, so
beat me up if you find anything calling it."""
open('/tmp/bpython-debug', 'a').write("%s\n" % (str(s), ))
def get_color(config, name):
return colors[config.color_scheme[name].lower()]
def get_colpair(config, name):
return curses.color_pair(get_color(config, name) + 1)
def make_colors(config):
"""Init all the colours in curses and bang them into a dictionary"""
# blacK, Red, Green, Yellow, Blue, Magenta, Cyan, White, Default:
c = {
'k': 0,
'r': 1,
'g': 2,
'y': 3,
'b': 4,
'm': 5,
'c': 6,
'w': 7,
'd': -1,
}
for i in range(63):
if i > 7:
j = i // 8
else:
j = c[config.color_scheme['background']]
curses.init_pair(i + 1, i % 8, j)
return c
class CLIRepl(Repl):
def __init__(self, scr, interp, statusbar, config, idle=None):
Repl.__init__(self, interp, config, idle)
interp.writetb = self.writetb
self.scr = scr
self.list_win = newwin(get_colpair(config, 'background'), 1, 1, 1, 1)
self.cpos = 0
self.do_exit = False
self.f_string = ''
self.idle = idle
self.in_hist = False
self.paste_mode = False
self.last_key_press = time.time()
self.s = ''
self.statusbar = statusbar
def addstr(self, s):
"""Add a string to the current input line and figure out
where it should go, depending on the cursor position."""
if not self.cpos:
self.s += s
else:
l = len(self.s)
self.s = self.s[:l - self.cpos] + s + self.s[l - self.cpos:]
self.complete()
def atbol(self):
"""Return True or False accordingly if the cursor is at the beginning
of the line (whitespace is ignored). This exists so that p_key() knows
how to handle the tab key being pressed - if there is nothing but white
space before the cursor then process it as a normal tab otherwise
attempt tab completion."""
return not self.s.lstrip()
def back(self):
"""Replace the active line with previous line in history and
increment the index to keep track"""
self.cpos = 0
self.rl_history.enter(self.s)
self.clear_wrapped_lines()
self.s = self.rl_history.back()
self.print_line(self.s, clr=True)
def bs(self, delete_tabs=True):
"""Process a backspace"""
y, x = self.scr.getyx()
if not self.s:
return
if x == self.ix and y == self.iy:
return
n = 1
self.clear_wrapped_lines()
if not self.cpos:
# I know the nested if blocks look nasty. :(
if self.atbol() and delete_tabs:
n = len(self.s) % self.config.tab_length
if not n:
n = self.config.tab_length
self.s = self.s[:-n]
else:
self.s = self.s[:-self.cpos - 1] + self.s[-self.cpos:]
self.print_line(self.s, clr=True)
return n
def bs_word(self):
pos = len(self.s) - self.cpos - 1
# First we delete any space to the left of the cursor.
while pos >= 0 and self.s[pos] == ' ':
pos -= self.bs()
# Then we delete a full word.
while pos >= 0 and self.s[pos] != ' ':
pos -= self.bs()
def check(self):
"""Check if paste mode should still be active and, if not, deactivate
it and force syntax highlighting."""
if (self.paste_mode
and time.time() - self.last_key_press > self.config.paste_time):
self.paste_mode = False
self.print_line(self.s)
def clear_current_line(self):
"""Called when a SyntaxError occured in the interpreter. It is
used to prevent autoindentation from occuring after a
traceback."""
Repl.clear_current_line(self)
self.s = ''
def clear_wrapped_lines(self):
"""Clear the wrapped lines of the current input."""
# curses does not handle this on its own. Sad.
width = self.scr.getmaxyx()[1]
for y in xrange(self.iy + 1, self.iy + len(self.s) // width + 1):
self.scr.move(y, 0)
self.scr.clrtoeol()
def complete(self, tab=False):
if self.paste_mode and self.list_win_visible:
self.scr.touchwin()
if self.paste_mode:
return
if self.list_win_visible and not self.config.auto_display_list:
self.scr.touchwin()
self.list_win_visible = False
return
if self.config.auto_display_list or tab:
self.list_win_visible = Repl.complete(self, tab)
if self.list_win_visible:
try:
self.show_list(self.matches, self.argspec)
except curses.error:
# XXX: This is a massive hack, it will go away when I get
# cusswords into a good enough state that we can start
# using it.
self.list_win.border()
self.list_win.refresh()
self.list_win_visible = False
if not self.list_win_visible:
self.scr.redrawwin()
self.scr.refresh()
def clrtobol(self):
"""Clear from cursor to beginning of line; usual C-u behaviour"""
self.clear_wrapped_lines()
if not self.cpos:
self.s = ''
else:
self.s = self.s[-self.cpos:]
self.print_line(self.s, clr=True)
self.scr.redrawwin()
self.scr.refresh()
def current_line(self):
"""Return the current line."""
return self.s
def cut_to_buffer(self):
"""Clear from cursor to end of line, placing into cut buffer"""
self.cut_buffer = self.s[-self.cpos:]
self.s = self.s[:-self.cpos]
self.cpos = 0
self.print_line(self.s, clr=True)
self.scr.redrawwin()
self.scr.refresh()
def cw(self):
"""Return the current word, i.e. the (incomplete) word directly to the
left of the cursor"""
if self.cpos:
# I don't know if autocomplete should be disabled if the cursor
# isn't at the end of the line, but that's what this does for now.
return
l = len(self.s)
if (not self.s or
(not self.s[l - 1].isalnum() and
self.s[l - 1] not in ('.', '_'))):
return
i = 1
while i < l + 1:
if not self.s[-i].isalnum() and self.s[-i] not in ('.', '_'):
break
i += 1
return self.s[-i + 1:]
def delete(self):
"""Process a del"""
if not self.s:
return
if self.mvc(-1):
self.bs(False)
def echo(self, s, redraw=True):
"""Parse and echo a formatted string with appropriate attributes. It
uses the formatting method as defined in formatter.py to parse the
srings. It won't update the screen if it's reevaluating the code (as it
does with undo)."""
if not py3 and isinstance(s, unicode):
s = s.encode(getpreferredencoding())
a = get_colpair(self.config, 'output')
if '\x01' in s:
rx = re.search('\x01([A-Za-z])([A-Za-z]?)', s)
if rx:
fg = rx.groups()[0]
bg = rx.groups()[1]
col_num = self._C[fg.lower()]
if bg and bg != 'I':
col_num *= self._C[bg.lower()]
a = curses.color_pair(int(col_num) + 1)
if bg == 'I':
a = a | curses.A_REVERSE
s = re.sub('\x01[A-Za-z][A-Za-z]?', '', s)
if fg.isupper():
a = a | curses.A_BOLD
s = s.replace('\x03', '')
s = s.replace('\x01', '')
# Replace NUL bytes, as addstr raises an exception otherwise
s = s.replace('\x00', '')
self.scr.addstr(s, a)
if redraw and not self.evaluating:
self.scr.refresh()
def end(self, refresh=True):
self.cpos = 0
h, w = gethw()
y, x = divmod(len(self.s) + self.ix, w)
y += self.iy
self.scr.move(y, x)
if refresh:
self.scr.refresh()
return True
def fwd(self):
"""Same as back() but, well, forward"""
self.cpos = 0
width = self.scr.getmaxyx()[1]
for y in xrange(self.iy + 1, self.iy + len(self.s) // width + 1):
self.scr.move(y, 0)
self.scr.clrtoeol()
self.rl_history.enter(self.s)
self.s = self.rl_history.forward()
self.print_line(self.s, clr=True)
def get_key(self):
key = ''
while True:
try:
key += self.scr.getkey()
if not py3:
key = key.decode(getpreferredencoding())
self.scr.nodelay(False)
except UnicodeDecodeError:
# Yes, that actually kind of sucks, but I don't see another way to get
# input right
self.scr.nodelay(True)
except curses.error:
# I'm quite annoyed with the ambiguity of this exception handler. I previously
# caught "curses.error, x" and accessed x.message and checked that it was "no
# input", which seemed a crappy way of doing it. But then I ran it on a
# different computer and the exception seems to have entirely different
# attributes. So let's hope getkey() doesn't raise any other crazy curses
# exceptions. :)
self.scr.nodelay(False)
# XXX What to do here? Raise an exception?
if key:
return key
else:
t = time.time()
self.paste_mode = (
t - self.last_key_press <= self.config.paste_time
)
self.last_key_press = t
return key
finally:
if self.idle:
self.idle(self)
def get_line(self):
"""Get a line of text and return it
This function initialises an empty string and gets the
curses cursor position on the screen and stores it
for the echo() function to use later (I think).
Then it waits for key presses and passes them to p_key(),
which returns None if Enter is pressed (that means "Return",
idiot)."""
self.s = ''
self.rl_history.reset()
self.iy, self.ix = self.scr.getyx()
if not self.paste_mode:
for _ in xrange(self.next_indentation()):
self.p_key('\t')
self.cpos = 0
while True:
key = self.get_key()
if self.p_key(key) is None:
return self.s
def home(self, refresh=True):
self.scr.move(self.iy, self.ix)
self.cpos = len(self.s)
if refresh:
self.scr.refresh()
return True
def lf(self):
"""Process a linefeed character; it only needs to check the
cursor position and move appropriately so it doesn't clear
the current line after the cursor."""
if self.cpos:
for _ in range(self.cpos):
self.mvc(-1)
# Reprint the line (as there was maybe a highlighted paren in it)
self.print_line(self.s, newline=True)
self.echo("\n")
def mkargspec(self, topline, down):
"""This figures out what to do with the argspec and puts it nicely into
the list window. It returns the number of lines used to display the
argspec. It's also kind of messy due to it having to call so many
addstr() to get the colouring right, but it seems to be pretty
sturdy."""
r = 3
fn = topline[0]
args = topline[1][0]
kwargs = topline[1][3]
_args = topline[1][1]
_kwargs = topline[1][2]
is_bound_method = topline[2]
in_arg = topline[3]
if py3:
kwonly = topline[1][4]
kwonly_defaults = topline[1][5] or dict()
max_w = int(self.scr.getmaxyx()[1] * 0.6)
self.list_win.erase()
self.list_win.resize(3, max_w)
h, w = self.list_win.getmaxyx()
self.list_win.addstr('\n ')
self.list_win.addstr(fn,
get_colpair(self.config, 'name') | curses.A_BOLD)
self.list_win.addstr(': (', get_colpair(self.config, 'name'))
maxh = self.scr.getmaxyx()[0]
if is_bound_method and isinstance(in_arg, int):
in_arg += 1
punctuation_colpair = get_colpair(self.config, 'punctuation')
for k, i in enumerate(args):
y, x = self.list_win.getyx()
ln = len(str(i))
kw = None
if kwargs and k + 1 > len(args) - len(kwargs):
kw = str(kwargs[k - (len(args) - len(kwargs))])
ln += len(kw) + 1
if ln + x >= w:
ty = self.list_win.getbegyx()[0]
if not down and ty > 0:
h += 1
self.list_win.mvwin(ty - 1, 1)
self.list_win.resize(h, w)
elif down and h + r < maxh - ty:
h += 1
self.list_win.resize(h, w)
else:
break
r += 1
self.list_win.addstr('\n\t')
if str(i) == 'self' and k == 0:
color = get_colpair(self.config, 'name')
else:
color = get_colpair(self.config, 'token')
if k == in_arg or i == in_arg:
color |= curses.A_BOLD
self.list_win.addstr(str(i), color)
if kw:
self.list_win.addstr('=', punctuation_colpair)
self.list_win.addstr(kw, get_colpair(self.config, 'token'))
if k != len(args) -1:
self.list_win.addstr(', ', punctuation_colpair)
if _args:
if args:
self.list_win.addstr(', ', punctuation_colpair)
self.list_win.addstr('*%s' % (_args, ),
get_colpair(self.config, 'token'))
if py3 and kwonly:
if not _args:
if args:
self.list_win.addstr(', ', punctuation_colpair)
self.list_win.addstr('*', punctuation_colpair)
marker = object()
for arg in kwonly:
self.list_win.addstr(', ', punctuation_colpair)
color = get_colpair(self.config, 'token')
if arg == in_arg:
color |= curses.A_BOLD
self.list_win.addstr(arg, color)
default = kwonly_defaults.get(arg, marker)
if default is not marker:
self.list_win.addstr('=', punctuation_colpair)
self.list_win.addstr(default,
get_colpair(self.config, 'token'))
if _kwargs:
if args or _args or (py3 and kwonly):
self.list_win.addstr(', ', punctuation_colpair)
self.list_win.addstr('**%s' % (_kwargs, ),
get_colpair(self.config, 'token'))
self.list_win.addstr(')', punctuation_colpair)
return r
def mvc(self, i, refresh=True):
"""This method moves the cursor relatively from the current
position, where:
0 == (right) end of current line
length of current line len(self.s) == beginning of current line
and:
current cursor position + i
for positive values of i the cursor will move towards the beginning
of the line, negative values the opposite."""
y, x = self.scr.getyx()
if self.cpos == 0 and i < 0:
return False
if x == self.ix and y == self.iy and i >= 1:
return False
h, w = gethw()
if x - i < 0:
y -= 1
x = w
if x - i >= w:
y += 1
x = 0 + i
self.cpos += i
self.scr.move(y, x - i)
if refresh:
self.scr.refresh()
return True
def p_key(self, key):
"""Process a keypress"""
if key is None:
return ''
config = self.config
if key == chr(8): # C-Backspace (on my computer anyway!)
self.clrtobol()
key = '\n'
# Don't return; let it get handled
if key == chr(27):
return ''
if key in (chr(127), 'KEY_BACKSPACE'):
self.bs()
self.complete()
return ''
elif key == 'KEY_DC': # Del
self.delete()
self.complete()
# Redraw (as there might have been highlighted parens)
self.print_line(self.s)
return ''
elif key in key_dispatch[config.undo_key]: # C-r
self.undo()
return ''
elif key in ('KEY_UP', ) + key_dispatch[config.up_one_line_key]:
# Cursor Up/C-p
self.back()
return ''
elif key in ('KEY_DOWN', ) + key_dispatch[config.down_one_line_key]:
# Cursor Down/C-n
self.fwd()
return ''
elif key == 'KEY_LEFT': # Cursor Left
self.mvc(1)
# Redraw (as there might have been highlighted parens)
self.print_line(self.s)
elif key == 'KEY_RIGHT': # Cursor Right
self.mvc(-1)
# Redraw (as there might have been highlighted parens)
self.print_line(self.s)
elif key in ("KEY_HOME", '^A', chr(1)): # home or ^A
self.home()
# Redraw (as there might have been highlighted parens)
self.print_line(self.s)
elif key in ("KEY_END", '^E', chr(5)): # end or ^E
self.end()
# Redraw (as there might have been highlighted parens)
self.print_line(self.s)
elif key in key_dispatch[config.cut_to_buffer_key]: # cut to buffer
self.cut_to_buffer()
return ''
elif key in key_dispatch[config.yank_from_buffer_key]:
# yank from buffer
self.yank_from_buffer()
return ''
elif key in key_dispatch[config.clear_word_key]:
self.bs_word()
self.complete()
return ''
elif key in key_dispatch[config.clear_line_key]:
self.clrtobol()
return ''
elif key in key_dispatch[config.clear_screen_key]:
self.s_hist = [self.s_hist[-1]]
self.highlighted_paren = None
self.redraw()
return ''
elif key in key_dispatch[config.exit_key]:
if not self.s:
self.do_exit = True
return None
else:
return ''
elif key in key_dispatch[config.save_key]:
self.write2file()
return ''
elif key in key_dispatch[config.pastebin_key]:
self.pastebin()
return ''
elif key in key_dispatch[config.last_output_key]:
page(self.stdout_hist[self.prev_block_finished:-4])
return ''
elif key in key_dispatch[config.show_source_key]:
try:
obj = self.current_func
if obj is None and inspection.is_eval_safe_name(self.s):
obj = self.get_object(self.s)
source = inspect.getsource(obj)
except (AttributeError, IOError, NameError, TypeError):
self.statusbar.message("Cannot show source.")
return ''
else:
if config.highlight_show_source:
source = format(PythonLexer().get_tokens(source),
TerminalFormatter())
page(source)
return ''
elif key == '\n':
self.lf()
return None
elif key == '\t':
return self.tab()
elif key == 'KEY_BTAB':
return self.tab(back=True)
elif len(key) == 1 and not unicodedata.category(key) == 'Cc':
self.addstr(key)
self.print_line(self.s)
else:
return ''
return True
def print_line(self, s, clr=False, newline=False):
"""Chuck a line of text through the highlighter, move the cursor
to the beginning of the line and output it to the screen."""
if not s:
clr = True
if self.highlighted_paren is not None:
# Clear previous highlighted paren
self.reprint_line(*self.highlighted_paren)
self.highlighted_paren = None
if self.config.syntax and (not self.paste_mode or newline):
o = format(self.tokenize(s, newline),
BPythonFormatter(self.config.color_scheme))
else:
o = s
self.f_string = o
self.scr.move(self.iy, self.ix)
if clr:
self.scr.clrtoeol()
if clr and not s:
self.scr.refresh()
if o:
for t in o.split('\x04'):
self.echo(t.rstrip('\n'))
if self.cpos:
t = self.cpos
for _ in range(self.cpos):
self.mvc(1)
self.cpos = t
def prompt(self, more):
"""Show the appropriate Python prompt"""
if not more:
self.echo("\x01%s\x03>>> " % (self.config.color_scheme['prompt'],))
self.stdout_hist += '>>> '
self.s_hist.append('\x01%s\x03>>> \x04' %
(self.config.color_scheme['prompt'],))
else:
prompt_more_color = self.config.color_scheme['prompt_more']
self.echo("\x01%s\x03... " % (prompt_more_color, ))
self.stdout_hist += '... '
self.s_hist.append('\x01%s\x03... \x04' % (prompt_more_color, ))
def push(self, s, insert_into_history=True):
# curses.raw(True) prevents C-c from causing a SIGINT
curses.raw(True)
try:
return Repl.push(self, s, insert_into_history)
finally:
curses.raw(True)
def redraw(self):
"""Redraw the screen."""
self.scr.erase()
for k, s in enumerate(self.s_hist):
if not s:
continue
self.iy, self.ix = self.scr.getyx()
for i in s.split('\x04'):
self.echo(i, redraw=False)
if k < len(self.s_hist) -1:
self.scr.addstr('\n')
self.iy, self.ix = self.scr.getyx()
self.print_line(self.s)
self.scr.refresh()
self.statusbar.refresh()
def repl(self):
"""Initialise the repl and jump into the loop. This method also has to
keep a stack of lines entered for the horrible "undo" feature. It also
tracks everything that would normally go to stdout in the normal Python
interpreter so it can quickly write it to stdout on exit after
curses.endwin(), as well as a history of lines entered for using
up/down to go back and forth (which has to be separate to the
evaluation history, which will be truncated when undoing."""
# Use our own helper function because Python's will use real stdin and
# stdout instead of our wrapped
self.push('from bpython._internal import _help as help\n', False)
self.iy, self.ix = self.scr.getyx()
more = False
while not self.do_exit:
self.f_string = ''
self.prompt(more)
try:
inp = self.get_line()
except KeyboardInterrupt:
self.statusbar.message('KeyboardInterrupt')
self.scr.addstr('\n')
self.scr.touchwin()
self.scr.refresh()
continue
self.scr.redrawwin()
if self.do_exit:
return
self.history.append(inp)
self.s_hist[-1] += self.f_string
if py3:
self.stdout_hist += inp + '\n'
else:
self.stdout_hist += inp.encode(getpreferredencoding()) + '\n'
stdout_position = len(self.stdout_hist)
more = self.push(inp)
if not more:
self.prev_block_finished = stdout_position
self.s = ''
def reprint_line(self, lineno, tokens):
"""Helper function for paren highlighting: Reprint line at offset
`lineno` in current input buffer."""
if not self.buffer or lineno == len(self.buffer):
return
real_lineno = self.iy
height, width = self.scr.getmaxyx()
for i in xrange(lineno, len(self.buffer)):
string = self.buffer[i]
# 4 = length of prompt
length = len(string.encode(getpreferredencoding())) + 4
real_lineno -= int(math.ceil(length / width))
if real_lineno < 0:
return
self.scr.move(real_lineno, 4)
line = format(tokens, BPythonFormatter(self.config.color_scheme))
for string in line.split('\x04'):
self.echo(string)
def resize(self):
"""This method exists simply to keep it straight forward when
initialising a window and resizing it."""
self.size()
self.scr.erase()
self.scr.resize(self.h, self.w)
self.scr.mvwin(self.y, self.x)
self.statusbar.resize(refresh=False)
self.redraw()
def show_list(self, items, topline=None, current_item=None):
shared = Struct()
shared.cols = 0
shared.rows = 0
shared.wl = 0
y, x = self.scr.getyx()
h, w = self.scr.getmaxyx()
down = (y < h // 2)
if down: