From a750bcaadabe23b26cc9321f33658bb97965187f Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Sun, 1 Sep 1996 17:09:21 +0000 Subject: [PATCH] Initial revision --- lisp/dos-w32.el | 169 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 lisp/dos-w32.el diff --git a/lisp/dos-w32.el b/lisp/dos-w32.el new file mode 100644 index 00000000000..92e42d5b8ee --- /dev/null +++ b/lisp/dos-w32.el @@ -0,0 +1,169 @@ +;;; dos-nt.el --- Functions shared among MS-DOS and Win32 (NT/95) platforms + +;; Copyright (C) 1996 Free Software Foundation, Inc. + +;; Maintainer: Geoff Voelker (voelker@cs.washington.edu) +;; Keywords: internal + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;; Parts of this code are duplicated functions taken from dos-fns.el +;; and winnt.el. + +;;; Code: + +;;; Add %t: into the mode line format just after the open-paren. +(let ((tail (member " %[(" mode-line-format))) + (setcdr tail (cons (purecopy "%t:") + (cdr tail)))) + +;; Use ";" instead of ":" as a path separator (from files.el). +(setq path-separator ";") + +;; Set the null device (for compile.el). +(setq grep-null-device "NUL") + +;; Set the grep regexp to match entries with drive letters. +(setq grep-regexp-alist + '(("^\\(\\([a-zA-Z]:\\)?[^:( \t\n]+\\)[:( \t]+\\([0-9]+\\)[:) \t]" 1 3))) + +;; For distinguishing file types based upon suffixes. +(defvar file-name-buffer-file-type-alist + '( + ("[:/].*config.sys$" . nil) ; config.sys text + ("\\.elc$" . t) ; emacs stuff + ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|chk\\|out\\|bin\\|ico\\|pif\\)$" . t) + ; MS-Dos stuff + ("\\.\\(arc\\|zip\\|pak\\|lzh\\|zoo\\)$" . t) + ; Packers + ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\)$" . t) + ; Unix stuff + ("\\.tp[ulpw]$" . t) + ; Borland Pascal stuff + ("[:/]tags$" . t) + ; Emacs TAGS file + ) + "*Alist for distinguishing text files from binary files. +Each element has the form (REGEXP . TYPE), where REGEXP is matched +against the file name, and TYPE is nil for text, t for binary.") + +(defun find-buffer-file-type (filename) + ;; First check if file is on an untranslated filesystem, then on the alist. + (if (untranslated-file-p filename) + t ; for binary + (let ((alist file-name-buffer-file-type-alist) + (found nil) + (code nil)) + (let ((case-fold-search t)) + (setq filename (file-name-sans-versions filename)) + (while (and (not found) alist) + (if (string-match (car (car alist)) filename) + (setq code (cdr (car alist)) + found t)) + (setq alist (cdr alist)))) + (if found + (cond ((memq code '(nil t)) code) + ((and (symbolp code) (fboundp code)) + (funcall code filename))) + default-buffer-file-type)))) + +(defun find-file-binary (filename) + "Visit file FILENAME and treat it as binary." + (interactive "FFind file binary: ") + (let ((file-name-buffer-file-type-alist '(("" . t)))) + (find-file filename))) + +(defun find-file-text (filename) + "Visit file FILENAME and treat it as a text file." + (interactive "FFind file text: ") + (let ((file-name-buffer-file-type-alist '(("" . nil)))) + (find-file filename))) + +(defun find-file-not-found-set-buffer-file-type () + (save-excursion + (set-buffer (current-buffer)) + (setq buffer-file-type (find-buffer-file-type (buffer-file-name)))) + nil) + +;;; To set the default file type on new files. +(add-hook 'find-file-not-found-hooks 'find-file-not-found-set-buffer-file-type) + + +;;; To accomodate filesystems that do not require CR/LF translation. +(defvar untranslated-filesystem-list nil + "List of filesystems that require no CR/LF translation when reading +and writing files. Each filesystem in the list is a string naming +the directory prefix corresponding to the filesystem.") + +(defun untranslated-canonical-name (filename) + "Return FILENAME in a canonicalized form for use with the functions +dealing with untranslated filesystems." + (if (memq system-type '(ms-dos windows-nt)) + ;; The canonical form for DOS/NT/Win95 is with A-Z downcased and all + ;; directory separators changed to directory-sep-char. + (let ((name nil)) + (setq name (mapconcat + '(lambda (char) + (if (and (<= ?A char) (<= char ?Z)) + (char-to-string (+ (- char ?A) ?a)) + (char-to-string char))) + filename nil)) + ;; Use expand-file-name to canonicalize directory separators, except + ;; with bare drive letters (which would have the cwd appended). + (if (string-match "^.:$" name) + name + (expand-file-name name))) + filename)) + +(defun untranslated-file-p (filename) + "Return t if FILENAME is on a filesystem that does not require +CR/LF translation, and nil otherwise." + (let ((fs (untranslated-canonical-name filename)) + (ufs-list untranslated-filesystem-list) + (found nil)) + (while (and (not found) ufs-list) + (if (string-match (concat "^" (car ufs-list)) fs) + (setq found t) + (setq ufs-list (cdr ufs-list)))) + found)) + +(defun add-untranslated-filesystem (filesystem) + "Add FILESYSTEM to the list of filesystems that do not require +CR/LF translation. FILESYSTEM is a string containing the directory +prefix corresponding to the filesystem. For example, for a Unix +filesystem mounted on drive Z:, FILESYSTEM could be \"Z:\"." + (let ((fs (untranslated-canonical-name filesystem))) + (if (member fs untranslated-filesystem-list) + untranslated-filesystem-list + (setq untranslated-filesystem-list + (cons fs untranslated-filesystem-list))))) + +(defun remove-untranslated-filesystem (filesystem) + "Remove FILESYSTEM from the list of filesystems that do not require +CR/LF translation. FILESYSTEM is a string containing the directory +prefix corresponding to the filesystem. For example, for a Unix +filesystem mounted on drive Z:, FILESYSTEM could be \"Z:\"." + (setq untranslated-filesystem-list + (delete (untranslated-canonical-name filesystem) + untranslated-filesystem-list))) + +(provide 'dos-nt) + +;;; dos-nt.el ends here -- 2.39.2