1;;; dos-fns.el --- MS-Dos specific functions. 2 3;; Copyright (C) 1991, 1993 Free Software Foundation, Inc. 4 5;; Maintainer: Morten Welinder (terra@diku.dk) 6;; Keywords: internal 7 8;; This file is part of GNU Emacs. 9 10;; GNU Emacs is free software; you can redistribute it and/or modify 11;; it under the terms of the GNU General Public License as published by 12;; the Free Software Foundation; either version 2, or (at your option) 13;; any later version. 14 15;; GNU Emacs is distributed in the hope that it will be useful, 16;; but WITHOUT ANY WARRANTY; without even the implied warranty of 17;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18;; GNU General Public License for more details. 19 20;; You should have received a copy of the GNU General Public License 21;; along with GNU Emacs; see the file COPYING. If not, write to 22;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 23 24;;; Commentary: 25 26;; Part of this code is taken from (or derived from) demacs. 27 28;;; Code: 29 30(setq-default mode-line-format 31 (list (purecopy "") 32 'mode-line-modified 33 'mode-line-buffer-identification 34 (purecopy " ") 35 'global-mode-string 36 (purecopy " %[(") 37 (purecopy "%t:") 38 'mode-name 'mode-line-process 'minor-mode-alist 39 (purecopy "%n") 40 (purecopy ")%]--") 41 (purecopy '(line-number-mode "L%l--")) 42 (purecopy '(-3 . "%p")) 43 (purecopy "-%-"))) 44 45(defvar file-name-buffer-file-type-alist 46 '( 47 ("[:/].*config.sys$" . nil) ; config.sys text 48 ("\\.elc$" . t) ; emacs stuff 49 ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|chk\\|out\\|bin\\|ico\\|pif\\)$" . t) 50 ; MS-Dos stuff 51 ("\\.\\(arc\\|zip\\|pak\\|lzh\\|zoo\\)$" . t) 52 ; Packers 53 ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\)$" . t) 54 ; Unix stuff 55 ("\\.tp[ulpw]$" . t) 56 ; Borland Pascal stuff 57 ("[:/]tags$" . t) 58 ; Emacs TAGS file 59 ) 60 "*Alist for distinguishing text files from binary files. 61Each element has the form (REGEXP . TYPE), where REGEXP is matched 62against the file name, and TYPE is nil for text, t for binary.") 63 64(defun find-buffer-file-type (filename) 65 (let ((alist file-name-buffer-file-type-alist) 66 (found nil) 67 (code nil)) 68 (let ((case-fold-search t)) 69 (setq filename (file-name-sans-versions filename)) 70 (while (and (not found) alist) 71 (if (string-match (car (car alist)) filename) 72 (setq code (cdr (car alist)) 73 found t)) 74 (setq alist (cdr alist)))) 75 (if found 76 (cond((memq code '(nil t)) code) 77 ((and (symbolp code) (fboundp code)) 78 (funcall code filename))) 79 default-buffer-file-type))) 80 81(defun find-file-binary (filename) 82 "Visit file FILENAME and treat it as binary." 83 (interactive "FFind file binary: ") 84 (let ((file-name-buffer-file-type-alist '(("" . t)))) 85 (find-file filename))) 86 87(defun find-file-text (filename) 88 "Visit file FILENAME and treat it as a text file." 89 (interactive "FFind file text: ") 90 (let ((file-name-buffer-file-type-alist '(("" . nil)))) 91 (find-file filename))) 92 93(defun find-file-not-found-set-buffer-file-type () 94 (save-excursion 95 (set-buffer (current-buffer)) 96 (setq buffer-file-type (find-buffer-file-type (buffer-file-name)))) 97 nil) 98 99;;; To set the default file type on new files. 100(add-hook 'find-file-not-found-hooks 'find-file-not-found-set-buffer-file-type) 101 102;;; We use the Emacs directory, not /usr/local 103(setq Info-default-directory-list (list "c:/emacs/info")) 104 105(defvar msdos-shells '("command.com" "4dos.com" "ndos.com") 106 "*List of shells that use `/c' instead of `-c' and a backslashed command.") 107 108(defconst register-name-alist 109 '((ax . 0) (bx . 1) (cx . 2) (dx . 3) (si . 4) (di . 5) 110 (cflag . 6) (flags . 7) 111 (al . (0 . 0)) (bl . (1 . 0)) (cl . (2 . 0)) (dl . (3 . 0)) 112 (ah . (0 . 1)) (bh . (1 . 1)) (ch . (2 . 1)) (dh . (3 . 1)))) 113 114(defun make-register () 115 (make-vector 8 0)) 116 117(defun register-value (regs name) 118 (let ((where (cdr (assoc name register-name-alist)))) 119 (cond ((consp where) 120 (let ((tem (aref regs (car where)))) 121 (if (zerop (cdr where)) 122 (% tem 256) 123 (/ tem 256)))) 124 ((numberp where) 125 (aref regs where)) 126 (t nil)))) 127 128(defun set-register-value (regs name value) 129 (and (numberp value) 130 (>= value 0) 131 (let ((where (cdr (assoc name register-name-alist)))) 132 (cond ((consp where) 133 (let ((tem (aref regs (car where))) 134 (value (logand value 255))) 135 (aset regs 136 (car where) 137 (if (zerop (cdr where)) 138 (logior (logand tem 65280) value) 139 (logior (logand tem 255) (lsh value 8)))))) 140 ((numberp where) 141 (aset regs where (logand value 65535)))))) 142 regs) 143 144(defsubst intdos (regs) 145 (int86 33 regs)) 146 147;;; Fix interface to (X-specific) mouse.el 148(defalias 'window-frame 'ignore) 149(defalias 'x-set-selection 'ignore) 150(fset 'x-get-selection '(lambda (&rest rest) "")) 151(fset 'frame-parameters 'ignore) 152(fmakunbound 'font-menu-add-default) 153(global-unset-key [C-down-mouse-1]) 154(global-unset-key [C-down-mouse-2]) 155(global-unset-key [C-down-mouse-3]) 156