/usr/lib/python2.7/dist-packages/prompt_toolkit/key_binding/bindings/named_commands.py is in python-prompt-toolkit 1.0.9-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | """
Key bindings which are also known by GNU readline by the given names.
See: http://www.delorie.com/gnu/docs/readline/rlman_13.html
"""
from __future__ import unicode_literals
from prompt_toolkit.enums import IncrementalSearchDirection, SEARCH_BUFFER
from six.moves import range
import six
from .completion import generate_completions
__all__ = (
'get_by_name',
)
# Registry that maps the Readline command names to their handlers.
_readline_commands = {}
def register(name):
"""
Store handler in the `_readline_commands` dictionary.
"""
assert isinstance(name, six.text_type)
def decorator(handler):
assert callable(handler)
_readline_commands[name] = handler
return handler
return decorator
def get_by_name(name):
"""
Return the handler for the (Readline) command with the given name.
"""
try:
return _readline_commands[name]
except KeyError:
raise KeyError('Unknown readline command: %r' % name)
#
# Commands for moving
# See: http://www.delorie.com/gnu/docs/readline/rlman_14.html
#
@register('beginning-of-line')
def beginning_of_line(event):
" Move to the start of the current line. "
buff = event.current_buffer
buff.cursor_position += buff.document.get_start_of_line_position(after_whitespace=False)
@register('end-of-line')
def end_of_line(event):
" Move to the end of the line. "
buff = event.current_buffer
buff.cursor_position += buff.document.get_end_of_line_position()
@register('forward-char')
def forward_char(event):
" Move forward a character. "
buff = event.current_buffer
buff.cursor_position += buff.document.get_cursor_right_position(count=event.arg)
@register('backward-char')
def backward_char(event):
" Move back a character. "
buff = event.current_buffer
buff.cursor_position += buff.document.get_cursor_left_position(count=event.arg)
@register('forward-word')
def forward_word(event):
"""
Move forward to the end of the next word. Words are composed of letters and
digits.
"""
buff = event.current_buffer
pos = buff.document.find_next_word_ending(count=event.arg)
if pos:
buff.cursor_position += pos
@register('backward-word')
def backward_word(event):
"""
Move back to the start of the current or previous word. Words are composed
of letters and digits.
"""
buff = event.current_buffer
pos = buff.document.find_previous_word_beginning(count=event.arg)
if pos:
buff.cursor_position += pos
@register('clear-screen')
def clear_screen(event):
"""
Clear the screen and redraw everything at the top of the screen.
"""
event.cli.renderer.clear()
@register('redraw-current-line')
def redraw_current_line(event):
"""
Refresh the current line.
(Readline defines this command, but prompt-toolkit doesn't have it.)
"""
pass
#
# Commands for manipulating the history.
# See: http://www.delorie.com/gnu/docs/readline/rlman_15.html
#
@register('accept-line')
def accept_line(event):
" Accept the line regardless of where the cursor is. "
b = event.current_buffer
b.accept_action.validate_and_handle(event.cli, b)
@register('previous-history')
def previous_history(event):
" Move `back' through the history list, fetching the previous command. "
event.current_buffer.history_backward(count=event.arg)
@register('next-history')
def next_history(event):
" Move `forward' through the history list, fetching the next command. "
event.current_buffer.history_forward(count=event.arg)
@register('beginning-of-history')
def beginning_of_history(event):
" Move to the first line in the history. "
event.current_buffer.go_to_history(0)
@register('end-of-history')
def end_of_history(event):
"""
Move to the end of the input history, i.e., the line currently being entered.
"""
event.current_buffer.history_forward(count=10**100)
buff = event.current_buffer
buff.go_to_history(len(buff._working_lines) - 1)
@register('reverse-search-history')
def reverse_search_history(event):
"""
Search backward starting at the current line and moving `up' through
the history as necessary. This is an incremental search.
"""
event.cli.current_search_state.direction = IncrementalSearchDirection.BACKWARD
event.cli.push_focus(SEARCH_BUFFER)
#
# Commands for changing text
#
@register('end-of-file')
def end_of_file(event):
"""
Exit.
"""
event.cli.exit()
@register('delete-char')
def delete_char(event):
" Delete character before the cursor. "
deleted = event.current_buffer.delete(count=event.arg)
if not deleted:
event.cli.output.bell()
@register('backward-delete-char')
def backward_delete_char(event):
" Delete the character behind the cursor. "
if event.arg < 0:
# When a negative argument has been given, this should delete in front
# of the cursor.
deleted = event.current_buffer.delete(count=-event.arg)
else:
deleted = event.current_buffer.delete_before_cursor(count=event.arg)
if not deleted:
event.cli.output.bell()
@register('self-insert')
def self_insert(event):
" Insert yourself. "
event.current_buffer.insert_text(event.data * event.arg)
@register('transpose-chars')
def transpose_chars(event):
"""
Emulate Emacs transpose-char behavior: at the beginning of the buffer,
do nothing. At the end of a line or buffer, swap the characters before
the cursor. Otherwise, move the cursor right, and then swap the
characters before the cursor.
"""
b = event.current_buffer
p = b.cursor_position
if p == 0:
return
elif p == len(b.text) or b.text[p] == '\n':
b.swap_characters_before_cursor()
else:
b.cursor_position += b.document.get_cursor_right_position()
b.swap_characters_before_cursor()
@register('uppercase-word')
def uppercase_word(event):
"""
Uppercase the current (or following) word.
"""
buff = event.current_buffer
for i in range(event.arg):
pos = buff.document.find_next_word_ending()
words = buff.document.text_after_cursor[:pos]
buff.insert_text(words.upper(), overwrite=True)
@register('downcase-word')
def downcase_word(event):
"""
Lowercase the current (or following) word.
"""
buff = event.current_buffer
for i in range(event.arg): # XXX: not DRY: see meta_c and meta_u!!
pos = buff.document.find_next_word_ending()
words = buff.document.text_after_cursor[:pos]
buff.insert_text(words.lower(), overwrite=True)
@register('capitalize-word')
def capitalize_word(event):
"""
Capitalize the current (or following) word.
"""
buff = event.current_buffer
for i in range(event.arg):
pos = buff.document.find_next_word_ending()
words = buff.document.text_after_cursor[:pos]
buff.insert_text(words.title(), overwrite=True)
#
# Killing and yanking.
#
@register('kill-line')
def kill_line(event):
"""
Kill the text from the cursor to the end of the line.
If we are at the end of the line, this should remove the newline.
(That way, it is possible to delete multiple lines by executing this
command multiple times.)
"""
buff = event.current_buffer
if event.arg < 0:
deleted = buff.delete_before_cursor(count=-buff.document.get_start_of_line_position())
else:
if buff.document.current_char == '\n':
deleted = buff.delete(1)
else:
deleted = buff.delete(count=buff.document.get_end_of_line_position())
event.cli.clipboard.set_text(deleted)
@register('kill-word')
def kill_word(event):
"""
Kill from point to the end of the current word, or if between words, to the
end of the next word. Word boundaries are the same as forward-word.
"""
buff = event.current_buffer
pos = buff.document.find_next_word_ending(count=event.arg)
if pos:
deleted = buff.delete(count=pos)
event.cli.clipboard.set_text(deleted)
@register('unix-word-rubout')
@register('backward-kill-word') # XXX: backward-kill-word is actually slightly different.
def unix_word_rubout(event):
"""
Kill the word behind point. Word boundaries are the same as backward-word.
"""
buff = event.current_buffer
pos = buff.document.find_start_of_previous_word(count=event.arg)
if pos is None:
# Nothing found? delete until the start of the document. (The
# input starts with whitespace and no words were found before the
# cursor.)
pos = - buff.cursor_position
if pos:
deleted = buff.delete_before_cursor(count=-pos)
# If the previous key press was also Control-W, concatenate deleted
# text.
if event.is_repeat:
deleted += event.cli.clipboard.get_data().text
event.cli.clipboard.set_text(deleted)
else:
# Nothing to delete. Bell.
event.cli.output.bell()
@register('delete-horizontal-space')
def delete_horizontal_space(event):
" Delete all spaces and tabs around point. "
buff = event.current_buffer
text_before_cursor = buff.document.text_before_cursor
text_after_cursor = buff.document.text_after_cursor
delete_before = len(text_before_cursor) - len(text_before_cursor.rstrip('\t '))
delete_after = len(text_after_cursor) - len(text_after_cursor.lstrip('\t '))
buff.delete_before_cursor(count=delete_before)
buff.delete(count=delete_after)
@register('unix-line-discard')
def unix_line_discard(event):
"""
Kill backward from the cursor to the beginning of the current line.
"""
buff = event.current_buffer
if buff.document.cursor_position_col == 0 and buff.document.cursor_position > 0:
buff.delete_before_cursor(count=1)
else:
deleted = buff.delete_before_cursor(count=-buff.document.get_start_of_line_position())
event.cli.clipboard.set_text(deleted)
@register('yank')
@register('yank-pop')
def yank(event):
"""
Paste before cursor.
"""
event.current_buffer.paste_clipboard_data(
event.cli.clipboard.get_data(), count=event.arg, before=True)
@register('yank-nth-arg')
def yank_nth_arg(event):
"""
Insert the first argument of the previous command. With an argument, insert
the nth word from the previous command (start counting at 0).
"""
n = (event.arg if event.arg_present else None)
event.current_buffer.yank_nth_arg(n)
@register('yank-last-arg')
def yank_last_arg(event):
"""
Like `yank_nth_arg`, but if no argument has been given, yank the last word
of each line.
"""
n = (event.arg if event.arg_present else None)
event.current_buffer.yank_last_arg(n)
#
# Completion.
#
@register('complete')
def complete(event):
generate_completions(event)
#
# Miscellaneous Commands.
#
@register('undo')
def undo(event):
" Incremental undo. "
event.current_buffer.undo()
|