;; dos-w32.el --- Functions shared among MS-DOS and W32 (NT/95) platforms ;; Copyright (C) 1996, 2001-2014 Free Software Foundation, Inc. ;; Maintainer: Geoff Voelker ;; Keywords: internal ;; Package: emacs ;; 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 3 of the License, 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. If not, see . ;;; Commentary: ;; Parts of this code are duplicated functions taken from dos-fns.el ;; and winnt.el. ;;; Code: ;; Use ";" instead of ":" as a path separator (from files.el). (when (memq system-type '(ms-dos windows-nt)) (setq path-separator ";") (push 'file-name-history minibuffer-history-case-insensitive-variables) ;; Set the null device (for compile.el). (setq null-device "NUL") (setq-default buffer-file-coding-system 'undecided-dos)) ;; For distinguishing file types based upon suffixes. DEPRECATED, DO NOT USE! (defcustom file-name-buffer-file-type-alist '(("[:/].*config.sys$" . nil) ; config.sys text ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|bin\\|ico\\|pif\\|class\\)$" . t) ; MS-Dos stuff ("\\.\\(dll\\|drv\\|386\\|vxd\\|fon\\|fnt\\|fot\\|ttf\\|grp\\)$" . t) ; Windows stuff ("\\.\\(bmp\\|wav\\|avi\\|mpg\\|jpg\\|tif\\|mov\\|au\\)$" . t) ; known binary data files ("\\.\\(arc\\|zip\\|pak\\|lzh\\|zoo\\)$" . t) ; Packers ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\|jar\\)$" . t) ; Unix stuff ("\\.sx[dmicw]$" . t) ; OpenOffice.org ("\\.tp[ulpw]$" . t) ; borland Pascal stuff ("[:/]tags$" . nil) ; emacs TAGS file ) "Alist used in the past 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. This variable is deprecated, not used anywhere, and will soon be deleted." :type '(repeat (cons regexp boolean)) :group 'dos-fns :group 'w32) (make-obsolete-variable 'file-name-buffer-file-type-alist 'file-coding-system-alist "24.4") (defun find-buffer-file-type-coding-system (command) "Choose a coding system for a file operation in COMMAND. COMMAND is a list that specifies the operation, an I/O primitive, as its CAR, and the arguments that might be given to that operation as its CDR. If operation is `insert-file-contents', the coding system is chosen based upon the filename (the CAR of the arguments beyond the operation), the contents of `w32-untranslated-filesystem-list' and `file-name-buffer-file-type-alist', and whether the file exists: If it matches in `w32-untranslated-filesystem-list': If the file exists: `undecided' If the file does not exist: `undecided-unix' Otherwise: If the file exists: `undecided' If the file does not exist default value of `buffer-file-coding-system' Note that the CAR of arguments to `insert-file-contents' operation could be a cons cell of the form (FILENAME . BUFFER), where BUFFER is a buffer into which the file's contents were already read, but not yet decoded. If operation is `write-region', the coding system is chosen based upon the value of `buffer-file-coding-system'. If `buffer-file-coding-system' is non-nil, its value is used. Otherwise, it is `undecided-dos'. The most common situation is when DOS and Unix files are read and written, and their names do not match in `w32-untranslated-filesystem-list'. In these cases, the coding system initially will be `undecided'. As the file is read in the DOS case, the coding system will be changed to `undecided-dos' as CR/LFs are detected. As the file is read in the Unix case, the coding system will be changed to `undecided-unix' as LFs are detected. In both cases, `buffer-file-coding-system' will be set to the appropriate coding system, and the value of `buffer-file-coding-system' will be used when writing the file." (let ((op (nth 0 command)) (undecided nil) (undecided-unix nil) target target-buf) (cond ((eq op 'insert-file-contents) (setq target (nth 1 command)) ;; If TARGET is a cons cell, it has the form (FILENAME . BUFFER), ;; where BUFFER is a buffer into which the file was already read, ;; but its contents were not yet decoded. (This form of the ;; arguments is used, e.g., in arc-mode.el.) This function ;; doesn't care about the contents, it only looks at the file's ;; name, which is the CAR of the cons cell. (when (consp target) (setq target-buf (and (bufferp (cdr target)) (buffer-name (cdr target)))) (setq target (car target))) (cond ((or ;; For any existing file, decide based on contents. (file-exists-p target) ;; If TARGET does not exist as a file, replace its ;; base name with TARGET-BUF and try again. This ;; is for jka-compr's sake, which strips the ;; compression (.gz etc.) extension from the ;; FILENAME, but leaves it in the BUFFER's name. (and (stringp target-buf) (file-exists-p (expand-file-name target-buf (file-name-directory target))))) (setq undecided t)) ;; Next check for a non-DOS file system. ((w32-untranslated-file-p target) (setq undecided-unix t))) (cond (undecided-unix '(undecided-unix . undecided-unix)) (undecided '(undecided . undecided)) (t (cons (default-value 'buffer-file-coding-system) (default-value 'buffer-file-coding-system))))) ((eq op 'write-region) (if buffer-file-coding-system (cons buffer-file-coding-system buffer-file-coding-system) ;; Normally this is used only in a non-file-visiting ;; buffer, because normally buffer-file-coding-system is non-nil ;; in a file-visiting buffer. '(undecided-dos . undecided-dos)))))) (make-obsolete 'find-buffer-file-type-coding-system nil "24.4") (defun find-file-binary (filename) "Visit file FILENAME and treat it as binary." ;; FIXME: Why here rather than in files.el? ;; FIXME: Can't we use find-file-literally for the same purposes? (interactive "FFind file binary: ") (let ((coding-system-for-read 'no-conversion)) ;; FIXME: undecided-unix? (find-file filename))) (defun find-file-text (filename) "Visit file FILENAME and treat it as a text file." (interactive "FFind file text: ") (let ((coding-system-for-read 'undecided-dos)) (find-file filename))) (defun w32-find-file-not-found-set-buffer-file-coding-system () (with-current-buffer (current-buffer) (let ((coding buffer-file-coding-system)) ;; buffer-file-coding-system is already set by ;; find-operation-coding-system, which was called from ;; insert-file-contents. All that's left is to change ;; the EOL conversion, if required by the user. (when (and (null coding-system-for-read) (or inhibit-eol-conversion (w32-untranslated-file-p (buffer-file-name)))) (setq coding (coding-system-change-eol-conversion coding 0)) (setq buffer-file-coding-system coding)) nil))) ;; To set the default coding system on new files. (add-hook 'find-file-not-found-functions 'w32-find-file-not-found-set-buffer-file-coding-system) ;;; To accommodate filesystems that do not require CR/LF translation. (define-obsolete-variable-alias 'untranslated-filesystem-list 'w32-untranslated-filesystem-list "24.4") (defvar w32-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 w32-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 cygwin)) ;; The canonical form for DOS/W32 is with A-Z downcased and all ;; directory separators changed to directory-sep-char. (let ((name (mapconcat (lambda (char) (char-to-string (if (and (<= ?A char ?Z)) (+ (- char ?A) ?a) char))) filename nil))) ;; Use expand-file-name to canonicalize directory separators, except ;; with bare drive letters (which would have the cwd appended). ;; Avoid expanding names that could trigger ange-ftp to prompt ;; for passwords, though. (if (or (string-match-p "^.:\\'" name) (string-match-p "^/[^/:]+:" name)) name (expand-file-name name))) filename)) (defun w32-untranslated-file-p (filename) "Return t if FILENAME is on a filesystem that does not require CR/LF translation, and nil otherwise." (let ((fs (w32-untranslated-canonical-name filename)) (ufs-list w32-untranslated-filesystem-list) (found nil)) (while (and (not found) ufs-list) (if (string-match-p (concat "^" (car ufs-list)) fs) (setq found t) (setq ufs-list (cdr ufs-list)))) found)) (define-obsolete-function-alias 'add-untranslated-filesystem 'w32-add-untranslated-filesystem "24.4") (defun w32-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:\"." ;; We use "D", not "f", to avoid confusing the user: "f" prompts ;; with a directory, but RET returns the current buffer's file, not ;; its directory. (interactive "DUntranslated file system: ") (let ((fs (w32-untranslated-canonical-name filesystem))) (if (member fs w32-untranslated-filesystem-list) w32-untranslated-filesystem-list (push fs w32-untranslated-filesystem-list)))) (define-obsolete-function-alias 'remove-untranslated-filesystem 'w32-remove-untranslated-filesystem "24.4") (defun w32-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:\"." (interactive "fUntranslated file system: ") (setq w32-untranslated-filesystem-list (delete (w32-untranslated-canonical-name filesystem) w32-untranslated-filesystem-list))) ;;; Support for printing under DOS/Windows, see lpr.el and ps-print.el. (define-obsolete-variable-alias 'direct-print-region-use-command-dot-com 'w32-direct-print-region-use-command-dot-com "24.4") (defcustom w32-direct-print-region-use-command-dot-com t "If non-nil, use command.com to print on Windows 9x." :type 'boolean :group 'dos-fns :group 'w32) ;; Function to actually send data to the printer port. ;; Supports writing directly, and using various programs. (defun w32-direct-print-region-helper (printer start end lpr-prog _delete-text _buf _display rest) (let* (;; Ignore case when matching known external program names. (case-fold-search t) ;; Convert / to \ in printer name, for sake of external programs. (printer (if (stringp printer) (subst-char-in-string ?/ ?\\ printer) printer)) ;; Find a directory that is local, to work-around Windows bug. (safe-dir (let ((safe-dirs (list "c:/" (getenv "windir") (getenv "TMPDIR")))) (while (not (file-attributes (car safe-dirs))) (setq safe-dirs (cdr safe-dirs))) (car safe-dirs))) (tempfile (subst-char-in-string ?/ ?\\ (make-temp-name (expand-file-name "EP" temporary-file-directory)))) ;; capture output for diagnosis (errbuf (list (get-buffer-create " *print-region-helper*") t))) ;; It seems that we must be careful about the directory name that ;; gets added to the printer port name by write-region when using ;; the standard "PRN" or "LPTx" ports, because the write can fail if ;; the directory is on a network drive. The same is true when ;; asking command.com to copy the file. ;; No action is needed for UNC printer names, which is just as well ;; because `expand-file-name' doesn't support UNC names on MS-DOS. (if (and (stringp printer) (not (string-match-p "^\\\\" printer))) (setq printer (subst-char-in-string ?/ ?\\ (expand-file-name printer safe-dir)))) ;; Handle known programs specially where necessary. (unwind-protect (cond ;; nprint.exe is the standard print command on Netware ((string-match-p "\\`nprint\\(\\.exe\\)?\\'" (file-name-nondirectory lpr-prog)) (write-region start end tempfile nil 0) (call-process lpr-prog nil errbuf nil tempfile (concat "P=" printer))) ;; print.exe is a standard command on NT ((string-match-p "\\`print\\(\\.exe\\)?\\'" (file-name-nondirectory lpr-prog)) ;; Be careful not to invoke print.exe on MS-DOS or Windows 9x ;; though, because it is a TSR program there (hangs Emacs). (or (and (eq system-type 'windows-nt) (null (getenv "winbootdir"))) (error "Printing via print.exe is not supported on MS-DOS or Windows 9x")) ;; It seems that print.exe always appends a form-feed so we ;; should make sure to omit the last FF in the data. (if (and (> end start) (char-equal (char-before end) ?\C-l)) (setq end (1- end))) ;; cancel out annotate function for non-PS case (let ((write-region-annotate-functions nil)) (write-region start end tempfile nil 0)) (call-process lpr-prog nil errbuf nil (concat "/D:" printer) tempfile)) ;; support lpr and similar programs for convenience, but ;; supply an explicit filename because the NT version of lpr ;; can't read from stdin. ((> (length lpr-prog) 0) (write-region start end tempfile nil 0) (setq rest (append rest (list tempfile))) (apply 'call-process lpr-prog nil errbuf nil rest)) ;; Run command.com to access printer port on Windows 9x, unless ;; we are supposed to append to an existing (non-empty) file, ;; to work around a bug in Windows 9x that prevents Windows ;; programs from accessing LPT ports reliably. ((and (eq system-type 'windows-nt) (getenv "winbootdir") ;; Allow cop-out so command.com isn't invoked w32-direct-print-region-use-command-dot-com ;; file-attributes fails on LPT ports on Windows 9x but ;; not on NT, so handle both cases for safety. (eq (or (nth 7 (file-attributes printer)) 0) 0)) (write-region start end tempfile nil 0) (let ((w32-quote-process-args nil)) (call-process "command.com" nil errbuf nil "/c" (format "copy /b %s %s" tempfile printer)))) ;; write directly to the printer port (t (write-region start end printer t 0))) ;; ensure we remove the tempfile if created (if (file-exists-p tempfile) (delete-file tempfile))))) (defvar printer-name) (declare-function default-printer-name "w32fns.c") (define-obsolete-function-alias 'direct-print-region-function 'w32-direct-print-region-function "24.4") (defun w32-direct-print-region-function (start end &optional lpr-prog delete-text buf display &rest rest) "DOS/Windows-specific function to print the region on a printer. Writes the region to the device or file which is a value of `printer-name' (which see), unless the value of `lpr-command' indicates a specific program should be invoked." ;; DOS printers need the lines to end with CR-LF pairs, so make ;; sure it always happens that way, unless the buffer is binary. (let* ((coding coding-system-for-write) (coding-base (if (null coding) 'undecided (coding-system-base coding))) (eol-type (coding-system-eol-type coding-base)) ;; Make each print-out eject the final page, but don't waste ;; paper if the file ends with a form-feed already. (write-region-annotate-functions (cons (lambda (_start end) (if (not (char-equal (char-before end) ?\f)) `((,end . "\f")))) write-region-annotate-functions)) (printer (or (and (boundp 'dos-printer) (stringp (symbol-value 'dos-printer)) (symbol-value 'dos-printer)) printer-name (default-printer-name)))) (or (eq coding-system-for-write 'no-conversion) (setq coding-system-for-write (aref eol-type 1))) ; force conversion to DOS EOLs (w32-direct-print-region-helper printer start end lpr-prog delete-text buf display rest))) (defvar lpr-headers-switches) ;; Set this to nil if you have a port of the `pr' program ;; (e.g., from GNU Textutils), or if you have an `lpr' ;; program (see above) that can print page headers. ;; If `lpr-headers-switches' is non-nil (the default) and ;; `print-region-function' is set to `dos-print-region-function', ;; then requests to print page headers will be silently ;; ignored, and `print-buffer' and `print-region' produce ;; the same output as `lpr-buffer' and `lpr-region', accordingly. (when (memq system-type '(ms-dos windows-nt)) (setq lpr-headers-switches "(page headers are not supported)")) (defvar ps-printer-name) (define-obsolete-function-alias 'direct-ps-print-region-function 'w32-direct-ps-print-region-function "24.4") (defun w32-direct-ps-print-region-function (start end &optional lpr-prog delete-text buf display &rest rest) "DOS/Windows-specific function to print the region on a PostScript printer. Writes the region to the device or file which is a value of `ps-printer-name' (which see), unless the value of `ps-lpr-command' indicates a specific program should be invoked." (let ((printer (or (and (boundp 'dos-ps-printer) (stringp (symbol-value 'dos-ps-printer)) (symbol-value 'dos-ps-printer)) ps-printer-name (default-printer-name)))) (w32-direct-print-region-helper printer start end lpr-prog delete-text buf display rest))) ;(setq ps-lpr-command "gs") ;(setq ps-lpr-switches '("-q" "-dNOPAUSE" "-sDEVICE=epson" "-r240x60" ; "-sOutputFile=LPT1")) (provide 'dos-w32) ;;; dos-w32.el ends here