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399 lines
16 KiB
EmacsLisp
399 lines
16 KiB
EmacsLisp
;; Copyright (C) 1986 Free Software Foundation, Inc.
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;; It started from public domain code by Mike Clarkson
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;; but has been greatly altered.
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 1, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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(require 'keypad)
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(defvar edt-last-deleted-lines ""
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"Last text deleted by an EDT emulation `line-delete' command.")
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(defvar edt-last-deleted-words ""
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"Last text deleted by an EDT emulation `word-delete' command.")
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(defvar edt-last-deleted-chars ""
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"Last text deleted by an EDT emulation `character-delete' command.")
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(defun delete-current-line (num)
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"Delete one or specified number of lines after point.
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This includes the newline character at the end of each line.
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They are saved for the EDT `undelete-lines' command."
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(interactive "p")
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(let ((beg (point)))
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(forward-line num)
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(if (not (eq (preceding-char) ?\n))
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(insert "\n"))
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(setq edt-last-deleted-lines
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(buffer-substring beg (point)))
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(delete-region beg (point))))
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(defun delete-to-eol (num)
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"Delete text up to end of line.
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With argument, delete up to to Nth line-end past point.
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They are saved for the EDT `undelete-lines' command."
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(interactive "p")
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(let ((beg (point)))
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(forward-char 1)
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(end-of-line num)
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(setq edt-last-deleted-lines
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(buffer-substring beg (point)))
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(delete-region beg (point))))
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(defun delete-current-word (num)
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"Delete one or specified number of words after point.
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They are saved for the EDT `undelete-words' command."
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(interactive "p")
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(let ((beg (point)))
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(forward-word num)
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(setq edt-last-deleted-words
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(buffer-substring beg (point)))
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(delete-region beg (point))))
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(defun edt-delete-previous-word (num)
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"Delete one or specified number of words before point.
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They are saved for the EDT `undelete-words' command."
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(interactive "p")
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(let ((beg (point)))
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(forward-word (- num))
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(setq edt-last-deleted-words
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(buffer-substring (point) beg))
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(delete-region beg (point))))
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(defun delete-current-char (num)
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"Delete one or specified number of characters after point.
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They are saved for the EDT `undelete-chars' command."
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(interactive "p")
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(setq edt-last-deleted-chars
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(buffer-substring (point) (min (point-max) (+ (point) num))))
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(delete-region (point) (min (point-max) (+ (point) num))))
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(defun delete-previous-char (num)
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"Delete one or specified number of characters before point.
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They are saved for the EDT `undelete-chars' command."
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(interactive "p")
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(setq edt-last-deleted-chars
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(buffer-substring (max (point-min) (- (point) num)) (point)))
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(delete-region (max (point-min) (- (point) num)) (point)))
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(defun undelete-lines ()
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"Yank lines deleted by last EDT `line-delete' command."
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(interactive)
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(insert edt-last-deleted-lines))
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(defun undelete-words ()
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"Yank words deleted by last EDT `word-delete' command."
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(interactive)
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(insert edt-last-deleted-words))
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(defun undelete-chars ()
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"Yank characters deleted by last EDT `character-delete' command."
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(interactive)
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(insert edt-last-deleted-chars))
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(defun next-end-of-line (num)
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"Move to end of line; if at end, move to end of next line.
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Accepts a prefix argument for the number of lines to move."
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(interactive "p")
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(forward-char)
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(end-of-line num))
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(defun previous-end-of-line (num)
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"Move EOL upward.
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Accepts a prefix argument for the number of lines to move."
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(interactive "p")
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(end-of-line (- 1 num)))
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(defun forward-to-word (num)
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"Move to next word-beginning, or to Nth following word-beginning."
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(interactive "p")
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(forward-word (1+ num))
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(forward-word -1))
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(defun backward-to-word (num)
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"Move back to word-end, or to Nth word-end seen."
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(interactive "p")
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(forward-word (- (1+ num)))
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(forward-word 1))
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(defun backward-line (num)
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"Move point to start of previous line.
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Prefix argument serves as repeat-count."
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(interactive "p")
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(forward-line (- num)))
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(defun scroll-window-down (num)
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"Scroll the display down a window-full.
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Accepts a prefix argument for the number of window-fulls to scroll."
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(interactive "p")
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(scroll-down (- (* (window-height) num) 2)))
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(defun scroll-window-up (num)
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"Scroll the display up a window-full.
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Accepts a prefix argument for the number of window-fulls to scroll."
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(interactive "p")
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(scroll-up (- (* (window-height) num) 2)))
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(defun next-paragraph (num)
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"Move to beginning of the next indented paragraph.
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Accepts a prefix argument for the number of paragraphs."
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(interactive "p")
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(while (> num 0)
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(next-line 1)
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(forward-paragraph)
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(previous-line 1)
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(if (eolp) (next-line 1))
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(setq num (1- num))))
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(defun previous-paragraph (num)
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"Move to beginning of previous indented paragraph.
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Accepts a prefix argument for the number of paragraphs."
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(interactive "p")
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(while (> num 0)
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(backward-paragraph)
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(previous-line 1)
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(if (eolp) (next-line 1))
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(setq num (1- num))))
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(defun move-to-beginning ()
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"Move cursor to the beginning of buffer, but don't set the mark."
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(interactive)
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(goto-char (point-min)))
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(defun move-to-end ()
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"Move cursor to the end of buffer, but don't set the mark."
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(interactive)
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(goto-char (point-max)))
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(defun goto-percent (perc)
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"Move point to ARG percentage of the buffer."
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(interactive "NGoto-percentage: ")
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(if (or (> perc 100) (< perc 0))
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(error "Percentage %d out of range 0 < percent < 100" perc)
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(goto-char (/ (* (point-max) perc) 100))))
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(defun update-mode-line ()
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"Ensure mode-line reflects all changes."
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(set-buffer-modified-p (buffer-modified-p))
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(sit-for 0))
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(defun advance-direction ()
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"Set EDT Advance mode so keypad commands move forward."
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(interactive)
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(setq edt-direction-string " ADVANCE")
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(define-key function-keymap "\C-c" 'isearch-forward) ; PF3
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(define-key function-keymap "8" 'scroll-window-up) ; "8"
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(define-key function-keymap "7" 'next-paragraph) ; "7"
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(define-key function-keymap "1" 'forward-to-word) ; "1"
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(define-key function-keymap "2" 'next-end-of-line) ; "2"
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(define-key function-keymap "3" 'forward-char) ; "3"
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(define-key function-keymap "0" 'forward-line) ; "0"
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(update-mode-line))
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(defun backup-direction ()
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"Set EDT Backup mode so keypad commands move backward."
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(interactive)
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(setq edt-direction-string " BACKUP")
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(define-key function-keymap "\C-c" 'isearch-backward) ; PF3
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(define-key function-keymap "8" 'scroll-window-down) ; "8"
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(define-key function-keymap "7" 'previous-paragraph) ; "7"
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(define-key function-keymap "1" 'backward-to-word) ; "1"
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(define-key function-keymap "2" 'previous-end-of-line) ; "2"
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(define-key function-keymap "3" 'backward-char) ; "3"
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(define-key function-keymap "0" 'backward-line) ; "0"
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(update-mode-line))
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(defun edt-beginning-of-window ()
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"Home cursor to top of window."
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(interactive)
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(move-to-window-line 0))
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(defun edt-line-to-bottom-of-window ()
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"Move the current line to the top of the window."
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(interactive)
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(recenter -1))
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(defun edt-line-to-top-of-window ()
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"Move the current line to the top of the window."
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(interactive)
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(recenter 0))
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(defun case-flip-character (num)
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"Change the case of the character under the cursor.
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Accepts a prefix argument of the number of characters to invert."
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(interactive "p")
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(while (> num 0)
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(funcall (if (<= ?a (following-char))
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'upcase-region 'downcase-region)
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(point) (1+ (point)))
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(forward-char 1)
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(setq num (1- num))))
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(defun indent-or-fill-region ()
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"Fill region in text modes, indent region in programming language modes."
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(interactive)
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(if (string= paragraph-start "^$\\|^ ")
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(indent-region (point) (mark) nil)
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(fill-region (point) (mark))))
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(defun mark-section-wisely ()
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"Mark the section in a manner consistent with the major-mode.
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Uses mark-defun for emacs-lisp, lisp,
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mark-c-function for C,
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and mark-paragraph for other modes."
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(interactive)
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(cond ((eq major-mode 'emacs-lisp-mode)
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(mark-defun))
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((eq major-mode 'lisp-mode)
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(mark-defun))
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((eq major-mode 'c-mode)
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(mark-c-function))
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(t (mark-paragraph))))
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;;; Key Bindings
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;;;###autoload
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(defun edt-emulation-on ()
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"Emulate DEC's EDT editor.
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Note that many keys are rebound; including nearly all keypad keys.
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Use \\[edt-emulation-off] to undo all rebindings except the keypad keys.
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Note that this function does not work if called directly from the .emacs file.
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Instead, the .emacs file should do \"(setq term-setup-hook 'edt-emulation-on)\"
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Then this function will be called at the time when it will work."
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(interactive)
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(advance-direction)
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(edt-bind-gold-keypad) ;Must do this *after* $TERM.el is loaded
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(setq edt-mode-old-c-\\ (lookup-key global-map "\C-\\"))
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(global-set-key "\C-\\" 'quoted-insert)
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(setq edt-mode-old-delete (lookup-key global-map "\177"))
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(global-set-key "\177" 'delete-previous-char) ;"Delete"
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(setq edt-mode-old-lisp-delete (lookup-key emacs-lisp-mode-map "\177"))
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(define-key emacs-lisp-mode-map "\177" 'delete-previous-char) ;"Delete"
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(define-key lisp-mode-map "\177" 'delete-previous-char) ;"Delete"
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(setq edt-mode-old-linefeed (lookup-key global-map "\C-j"))
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(global-set-key "\C-j" 'edt-delete-previous-word) ;"LineFeed"
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(define-key esc-map "?" 'apropos)) ;"<ESC>?"
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(defun edt-emulation-off ()
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"Return from EDT emulation to normal Emacs key bindings.
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The keys redefined by \\[edt-emulation-on] are given their old definitions."
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(interactive)
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(setq edt-direction-string nil)
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(global-set-key "\C-\\" edt-mode-old-c-\\)
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(global-set-key "\177" edt-mode-old-delete) ;"Delete"
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(define-key emacs-lisp-mode-map "\177" edt-mode-old-lisp-delete) ;"Delete"
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(define-key lisp-mode-map "\177" edt-mode-old-lisp-delete) ;"Delete"
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(global-set-key "\C-j" edt-mode-old-linefeed)) ;"LineFeed"
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(define-key function-keymap "u" 'previous-line) ;Up arrow
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(define-key function-keymap "d" 'next-line) ;down arrow
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(define-key function-keymap "l" 'backward-char) ;right arrow
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(define-key function-keymap "r" 'forward-char) ;left arrow
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(define-key function-keymap "h" 'edt-beginning-of-window) ;home
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(define-key function-keymap "\C-b" 'describe-key) ;PF2
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(define-key function-keymap "\C-d" 'delete-current-line);PF4
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(define-key function-keymap "9" 'append-to-buffer) ;9 keypad key, etc.
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(define-key function-keymap "-" 'delete-current-word)
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(define-key function-keymap "4" 'advance-direction)
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(define-key function-keymap "5" 'backup-direction)
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(define-key function-keymap "6" 'kill-region)
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(define-key function-keymap "," 'delete-current-char)
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(define-key function-keymap "." 'set-mark-command)
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(define-key function-keymap "e" 'other-window) ;enter key
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(define-key function-keymap "\C-a" 'GOLD-prefix) ;PF1 ("gold")
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(fset 'GOLD-prefix GOLD-map)
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(defvar GOLD-map (make-keymap)
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"`GOLD-map' maps the function keys on the VT100 keyboard preceeded
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by the PF1 key. GOLD is the ASCII the 7-bit escape sequence <ESC>OP.")
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(defun define-keypad-key (keymap function-keymap-slot definition)
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(let ((function-key-sequence (function-key-sequence function-keymap-slot)))
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(if function-key-sequence
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(define-key keymap function-key-sequence definition))))
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;;Bind GOLD/Keyboard keys
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(define-key GOLD-map "\C-g" 'keyboard-quit) ; just for safety
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(define-key GOLD-map "\177" 'delete-window) ;"Delete"
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(define-key GOLD-map "\C-h" 'delete-other-windows) ;"BackSpace"
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(define-key GOLD-map "\C-m" 'newline-and-indent) ;"Return"
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(define-key GOLD-map " " 'undo) ;"Spacebar"
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(define-key GOLD-map "%" 'goto-percent) ; "%"
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(define-key GOLD-map "=" 'goto-line) ; "="
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(define-key GOLD-map "`" 'what-line) ; "`"
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(define-key GOLD-map "\C-\\" 'split-window-vertically) ; "Control-\"
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; GOLD letter combinations:
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(define-key GOLD-map "b" 'buffer-menu) ; "b"
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(define-key GOLD-map "B" 'buffer-menu) ; "B"
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(define-key GOLD-map "d" 'delete-window) ; "d"
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(define-key GOLD-map "D" 'delete-window) ; "D"
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(define-key GOLD-map "e" 'compile) ; "e"
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(define-key GOLD-map "E" 'compile) ; "E"
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(define-key GOLD-map "i" 'insert-file) ; "i"
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(define-key GOLD-map "I" 'insert-file) ; "I"
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(define-key GOLD-map "l" 'goto-line) ; "l"
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(define-key GOLD-map "L" 'goto-line) ; "L"
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(define-key GOLD-map "m" 'save-some-buffers) ; "m"
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(define-key GOLD-map "M" 'save-some-buffers) ; "m"
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(define-key GOLD-map "n" 'next-error) ; "n"
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(define-key GOLD-map "N" 'next-error) ; "N"
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(define-key GOLD-map "o" 'switch-to-buffer-other-window) ; "o"
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(define-key GOLD-map "O" 'switch-to-buffer-other-window) ; "O"
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(define-key GOLD-map "r" 'revert-file) ; "r"
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(define-key GOLD-map "r" 'revert-file) ; "R"
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(define-key GOLD-map "s" 'save-buffer) ; "s"
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(define-key GOLD-map "S" 'save-buffer) ; "S"
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(define-key GOLD-map "v" 'find-file-other-window) ; "v"
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(define-key GOLD-map "V" 'find-file-other-window) ; "V"
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(define-key GOLD-map "w" 'write-file) ; "w"
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(define-key GOLD-map "w" 'write-file) ; "W"
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;(define-key GOLD-map "z" 'shrink-window) ; "z"
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;(define-key GOLD-map "Z" 'shrink-window) ; "z"
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;Bind GOLD/Keypad keys
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(defun edt-bind-gold-keypad ()
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(define-keypad-key GOLD-map ?u 'edt-line-to-top-of-window) ;"up-arrow"
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(define-keypad-key GOLD-map ?d 'edt-line-to-bottom-of-window) ;"down-arrow"
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(define-keypad-key GOLD-map ?l 'backward-sentence) ;"left-arrow"
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(define-keypad-key GOLD-map ?r 'forward-sentence) ;"right-arrow"
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(define-keypad-key GOLD-map ?\C-a 'mark-section-wisely) ;Gold "PF1"
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(define-keypad-key GOLD-map ?\C-b 'describe-function) ;Help "PF2"
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(define-keypad-key GOLD-map ?\C-c 'occur) ;Find "PF3"
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(define-keypad-key GOLD-map ?\C-d 'undelete-lines) ;Und Line "PF4"
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(define-keypad-key GOLD-map ?0 'open-line) ;Open L "0"
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(define-keypad-key GOLD-map ?1 'case-flip-character) ;Chgcase "1"
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(define-keypad-key GOLD-map ?2 'delete-to-eol) ;Del EOL "2"
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(define-keypad-key GOLD-map ?3 'copy-region-as-kill) ;Copy "3"
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(define-keypad-key GOLD-map ?4 'move-to-end) ;Bottom "4"
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(define-keypad-key GOLD-map ?5 'move-to-beginning) ;Top "5"
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(define-keypad-key GOLD-map ?6 'yank) ;Paste "6"
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(define-keypad-key GOLD-map ?7 'execute-extended-command) ;Command "7"
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(define-keypad-key GOLD-map ?8 'indent-or-fill-region) ;Fill "8"
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(define-keypad-key GOLD-map ?9 'replace-regexp) ;Replace "9"
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(define-keypad-key GOLD-map ?- 'undelete-words) ;UND word "-"
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(define-keypad-key GOLD-map ?, 'undelete-chars) ;UND Char ","
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(define-keypad-key GOLD-map ?. 'redraw-display) ;Reset Window "."
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(define-keypad-key GOLD-map ?e 'shell-command)) ;"ENTER"
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;; Make direction of motion show in mode line
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;; while EDT emulation is turned on.
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;; Note that the keypad is always turned on when in Emacs.
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(or (assq 'edt-direction-string minor-mode-alist)
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(setq minor-mode-alist (cons '(edt-direction-string edt-direction-string)
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minor-mode-alist)))
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