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GeezerVison is showing github.com — bpython/bpython/cli.py at master · pp1992m/bpython Expand file tree/ Copy pathcli.pyMore file actions 1987 lines (1631 loc) · 62 KB / Copy pathcli.pyFile metadata and controls1987 lines (1631 loc) · 62 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 # The MIT License # # Copyright (c) 2008 Bob Farrell # Copyright (c) bpython authors # # 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. # # Modified by Brandon Navra # Notes for Windows # Prerequisites # - Curses # - pyreadline # # Added # # - Support for running on windows command prompt # - input from numpad keys # # Issues # # - Suspend doesn't work nor does detection of resizing of screen # - Instead the suspend key exits the program # - View source doesn't work on windows unless you install the less program (From GnuUtils or Cygwin) from __future__ import division, absolute_import import platform import os import sys import curses import math import re import time import functools import struct if platform.system() != 'Windows': import signal # Windows does not have job control import termios # Windows uses curses import fcntl # Windows uses curses import unicodedata import errno from six.moves import range # These are used for syntax highlighting from pygments import format from pygments.formatters import TerminalFormatter from ._py3compat import PythonLexer from pygments.token import Token from .formatter import BPythonFormatter # This for completion from . import importcompletion # This for config from .config import Struct, getpreferredencoding # This for keys from .keys import cli_key_dispatch as key_dispatch # This for i18n from . import translations from .translations import _ from . import repl from ._py3compat import py3 from .pager import page from .args import parse as argsparse if not py3: import inspect # --- module globals --- stdscr = None colors = None DO_RESIZE = False # --- 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 def forward_if_not_current(func): @functools.wraps(func) def newfunc(self, *args, **kwargs): dest = self.get_dest() if self is dest: return func(self, *args, **kwargs) else: return getattr(self.get_dest(), newfunc.__name__)(*args, **kwargs) return newfunc class FakeStream(object): """Provide a fake file object which calls functions on the interface provided.""" def __init__(self, interface, get_dest): self.encoding = getpreferredencoding() self.interface = interface self.get_dest = get_dest @forward_if_not_current def write(self, s): self.interface.write(s) @forward_if_not_current def writelines(self, l): for s in l: self.write(s) def isatty(self): # some third party (amongst them mercurial) depend on this return True def flush(self): self.interface.flush() 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', '\r')): 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 not in ('\n', '\r') 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, '')) # 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 get_color(config, name): global colors 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, } if platform.system() == 'Windows': c = dict(list(c.items()) + [ ('K', 8), ('R', 9), ('G', 10), ('Y', 11), ('B', 12), ('M', 13), ('C', 14), ('W', 15), ] ) 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 CLIInteraction(repl.Interaction): def __init__(self, config, statusbar=None): repl.Interaction.__init__(self, config, statusbar) def confirm(self, q): """Ask for yes or no and return boolean""" try: reply = self.statusbar.prompt(q) except ValueError: return False return reply.lower() in (_('y'), _('yes')) def notify(self, s, n=10, wait_for_keypress=False): return self.statusbar.message(s, n) def file_prompt(self, s): return self.statusbar.prompt(s) class CLIRepl(repl.Repl): def __init__(self, scr, interp, statusbar, config, idle=None): repl.Repl.__init__(self, interp, config) self.interp.writetb = self.writetb self.scr = scr self.stdout_hist = '' # native str (bytes in Py2, unicode in Py3) self.list_win = newwin(get_colpair(config, 'background'), 1, 1, 1, 1) self.cpos = 0 self.do_exit = False self.exit_value = () 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 self.formatter = BPythonFormatter(config.color_scheme) self.interact = CLIInteraction(self.config, statusbar=self.statusbar) if config.cli_suggestion_width <= 0 or config.cli_suggestion_width > 1: config.cli_suggestion_width = 0.8 def _get_cursor_offset(self): return len(self.s) - self.cpos def _set_cursor_offset(self, offset): self.cpos = len(self.s) - offset cursor_offset = property(_get_cursor_offset, _set_cursor_offset, None, "The cursor offset from the beginning of the line") def addstr(self, s): """Add a string to the current input line and figure out where it should go, depending on the cursor position.""" self.rl_history.reset() 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 bs(self, delete_tabs=True): """Process a backspace""" self.rl_history.reset() 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): self.rl_history.reset() pos = len(self.s) - self.cpos - 1 deleted = [] # First we delete any space to the left of the cursor. while pos >= 0 and self.s[pos] == ' ': deleted.append(self.s[pos]) pos -= self.bs() # Then we delete a full word. while pos >= 0 and self.s[pos] != ' ': deleted.append(self.s[pos]) pos -= self.bs() return ''.join(reversed(deleted)) 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 occurred in the interpreter. It is used to prevent autoindentation from occurring after a traceback.""" repl.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. height, width = self.scr.getmaxyx() max_y = min(self.iy + (self.ix + len(self.s)) // width + 1, height) for y in range(self.iy + 1, max_y): self.scr.move(y, 0) self.scr.clrtoeol() def complete(self, tab=False): """Get Autocomplete list and window. Called whenever these should be updated, and called with tab """ if self.paste_mode: self.scr.touchwin() # TODO necessary? return list_win_visible = repl.Repl.complete(self, tab) if list_win_visible: try: self.show_list(self.matches_iter.matches, self.arg_pos, topline=self.funcprops, formatter=self.matches_iter.completer.format) 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() list_win_visible = False if not 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 _get_current_line(self): return self.s def _set_current_line(self, line): self.s = line current_line = property(_get_current_line, _set_current_line, None, "The characters of the current line") 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 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('\0', '') # Replace \r\n bytes, as addstr remove the current line otherwise s = s.replace('\r\n', '\n') 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 hbegin(self): """Replace the active line with first line in history and increment the index to keep track""" self.cpos = 0 self.clear_wrapped_lines() self.rl_history.enter(self.s) self.s = self.rl_history.first() self.print_line(self.s, clr=True) def hend(self): """Same as hbegin() but, well, forward""" self.cpos = 0 self.clear_wrapped_lines() self.rl_history.enter(self.s) self.s = self.rl_history.last() self.print_line(self.s, clr=True) def back(self): """Replace the active line with previous line in history and increment the index to keep track""" self.cpos = 0 self.clear_wrapped_lines() self.rl_history.enter(self.s) self.s = self.rl_history.back() self.print_line(self.s, clr=True) def fwd(self): """Same as back() but, well, forward""" self.cpos = 0 self.clear_wrapped_lines() self.rl_history.enter(self.s) self.s = self.rl_history.forward() self.print_line(self.s, clr=True) def search(self): """Search with the partial matches from the history object.""" self.cpo = 0 self.clear_wrapped_lines() self.rl_history.enter(self.s) self.s = self.rl_history.back(start=False, search=True) self.print_line(self.s, clr=True) def get_key(self): key = '' while True: try: key += self.scr.getkey() if py3: # Seems like we get a in the locale's encoding # encoded string in Python 3 as well, but of # type str instead of bytes, hence convert it to # bytes first and decode then key = key.encode('latin-1').decode(getpreferredencoding()) else: 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: if key != '\x00': t = time.time() self.paste_mode = ( t - self.last_key_press <= self.config.paste_time ) self.last_key_press = t return key else: 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 range(self.next_indentation()): self.p_key('\t') self.cpos = 0 while True: key = self.get_key() if self.p_key(key) is None: if self.config.cli_trim_prompts and self.s.startswith(">>> "): self.s = self.s[4:] 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, in_arg, 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.func args = topline.argspec.args kwargs = topline.argspec.defaults _args = topline.argspec.varargs _kwargs = topline.argspec.varkwargs is_bound_method = topline.is_bound_method if py3: kwonly = topline.argspec.kwonly kwonly_defaults = topline.argspec.kwonly_defaults 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 = repr(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 if not py3: # See issue #138: We need to format tuple unpacking correctly # We use the undocumented function inspection.strseq() for # that. Fortunately, that madness is gone in Python 3. self.list_win.addstr(inspect.strseq(i, str), color) else: self.list_win.addstr(str(i), color) if kw is not None: 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(repr(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 platform.system() == 'Windows': C_BACK = chr(127) BACKSP = chr(8) else: C_BACK = chr(8) BACKSP = chr(127) if key == C_BACK: # C-Backspace (on my computer anyway!) self.clrtobol() key = '\n' # Don't return; let it get handled if key == chr(27): # Escape Key return '' if key in (BACKSP, 'KEY_BACKSPACE'): self.bs() self.complete() return '' elif key in key_dispatch[config.delete_key] and not self.s: # Delete on empty line exits self.do_exit = True return None elif key in ('KEY_DC', ) + key_dispatch[config.delete_key]: 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 n = self.prompt_undo() if n > 0: self.undo(n=n) return '' elif key in key_dispatch[config.search_key]: self.search() 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 in ("KEY_LEFT", ' ^B', chr(2)): # Cursor Left or ^B self.mvc(1) # Redraw (as there might have been highlighted parens) self.print_line(self.s) elif key in ("KEY_RIGHT", '^F', chr(6)): # Cursor Right or ^F 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_NPAGE", '\T'): # page_down or \T self.hend() self.print_line(self.s) elif key in ("KEY_PPAGE", '\S'): # page_up or \S self.hbegin() 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.cut_buffer = 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.copy_clipboard_key]: self.copy2clipboard() 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: source = self.get_source_of_current_name() except repl.SourceNotFound as e: self.statusbar.message('%s' % (e, )) else: if config.highlight_show_source: source = format(PythonLexer().get_tokens(source), TerminalFormatter()) page(source) return '' elif key in ('\n', '\r', 'PADENTER'): self.lf() return None elif key == '\t': return self.tab() elif key == 'KEY_BTAB': return self.tab(back=True) elif key in key_dispatch[config.suspend_key]: if platform.system() != 'Windows': self.suspend() return '' else: |
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