X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/b578f267af27af50e3c091f8c9c9eee939b69978..cd529916976e7c04b967808e992f16ab76023348:/lisp/dos-fns.el?ds=sidebyside diff --git a/lisp/dos-fns.el b/lisp/dos-fns.el index b85bea9e07..ac67c90434 100644 --- a/lisp/dos-fns.el +++ b/lisp/dos-fns.el @@ -1,8 +1,8 @@ ;;; dos-fns.el --- MS-Dos specific functions. -;; Copyright (C) 1991, 1993, 1995 Free Software Foundation, Inc. +;; Copyright (C) 1991, 1993, 1995, 1996 Free Software Foundation, Inc. -;; Maintainer: Morten Welinder (terra@diku.dk) +;; Maintainer: Morten Welinder ;; Keywords: internal ;; This file is part of GNU Emacs. @@ -28,121 +28,60 @@ ;;; 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))) - ;; This overrides a trivial definition in files.el. (defun convert-standard-filename (filename) "Convert a standard file's name to something suitable for the current OS. This function's standard definition is trivial; it just returns the argument. However, on some systems, the function is redefined with a definition that really does change some file names." - (let ((dir (file-name-directory filename)) - (string (copy-sequence (file-name-nondirectory filename))) - i firstdot) - ;; Change a leading period to a leading underscore. - (if (= (aref string 0) ?.) - (aset string 0 ?_)) - ;; Get rid of invalid characters. - (while (setq i (string-match "[^a-zA-Z0-9_.%~]" string)) - (aset string i ?_)) - ;; If we don't have a period, - ;; and we have a dash or underscore that isn't the first char, - ;; change that to a period. - (if (and (not (string-match "\\." string)) - (setq i (string-match "[-_]" string 1))) - (aset string i ?\.)) - ;; If we don't have a period in the first 8 chars, insert one. - (if (> (or (string-match "\\." string) - (length string)) - 8) - (setq string - (concat (substring string 0 8) - "." - (substring string 8)))) - (setq firstdot (or (string-match "\\." string) (1- (length string)))) - ;; Truncate to 3 chars after the first period. - (if (> (length string) (+ firstdot 4)) - (setq string (substring string 0 (+ firstdot 4)))) - ;; Change all periods except the first one into underscores. - (while (string-match "\\." string (1+ firstdot)) - (setq i (string-match "\\." string (1+ firstdot))) - (aset string i ?_)) - (concat dir string))) - -(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) - (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) - -(defvar msdos-shells '("command.com" "4dos.com" "ndos.com") - "*List of shells that use `/c' instead of `-c' and a backslashed command.") - -(defconst register-name-alist + (if (or (msdos-long-file-names) + (not (stringp filename)) + (member (file-name-nondirectory filename) '("" "." ".."))) + filename + (let* ((dir (file-name-directory filename)) + (string (copy-sequence (file-name-nondirectory filename))) + (lastchar (aref string (1- (length string)))) + i firstdot) + ;; Change a leading period to a leading underscore. + (if (= (aref string 0) ?.) + (aset string 0 ?_)) + ;; Get rid of invalid characters. + (while (setq i (string-match + "[^-a-zA-Z0-9_.%~^$!#&{}@`'()\200-\376]" + string)) + (aset string i ?_)) + ;; If we don't have a period, + ;; and we have a dash or underscore that isn't the first char, + ;; change that to a period. + (if (and (not (string-match "\\." string)) + (setq i (string-match "[-_]" string 1))) + (aset string i ?\.)) + ;; If we don't have a period in the first 8 chars, insert one. + (if (> (or (string-match "\\." string) + (length string)) + 8) + (setq string + (concat (substring string 0 8) + "." + (substring string 8)))) + (setq firstdot (or (string-match "\\." string) (1- (length string)))) + ;; Truncate to 3 chars after the first period. + (if (> (length string) (+ firstdot 4)) + (setq string (substring string 0 (+ firstdot 4)))) + ;; Change all periods except the first one into underscores. + (while (string-match "\\." string (1+ firstdot)) + (setq i (string-match "\\." string (1+ firstdot))) + (aset string i ?_)) + ;; If the last character of the original filename was `~', + ;; make sure the munged name ends with it also. + (if (equal lastchar ?~) + (aset string (1- (length string)) lastchar)) + (concat dir string)))) + +;; See dos-vars.el for defcustom. +(defvar msdos-shells) + +(defvar register-name-alist '((ax . 0) (bx . 1) (cx . 2) (dx . 3) (si . 4) (di . 5) (cflag . 6) (flags . 7) (al . (0 . 0)) (bl . (1 . 0)) (cl . (2 . 0)) (dl . (3 . 0)) @@ -181,14 +120,25 @@ against the file name, and TYPE is nil for text, t for binary.") (defsubst intdos (regs) (int86 33 regs)) -;; Extra stub to functions in src/frame.c -;; Emacs aborts during dump if the following don't have a doc string. -(defun window-frame (window) - "Return the frame that WINDOW resides on." - (selected-frame)) -(defun raise-frame (frame) - "Raise FRAME to the top of the desktop." - nil) -(defun select-frame (frame &optional no-enter) - "Select FRAME for input events." - (selected-frame)) +;; Backward compatibility for obsolescent functions which +;; set screen size. + +(defun mode25 () + "Changes the number of screen rows to 25." + (interactive) + (set-frame-size (selected-frame) 80 25)) + +(defun mode4350 () + "Changes the number of rows to 43 or 50. +Emacs always tries to set the screen height to 50 rows first. +If this fails, it will try to set it to 43 rows, on the assumption +that your video hardware might not support 50-line mode." + (interactive) + (set-frame-size (selected-frame) 80 50) + (if (eq (frame-height (selected-frame)) 50) + nil ; the original built-in function returned nil + (set-frame-size (selected-frame) 80 43))) + +(provide 'dos-fns) + +; dos-fns.el ends here