X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/7c621f7acdd6f029c657b0cdd121faea35f0467f..3c53a3cf83c218772d9bcfde4cd60c1face33e93:/lisp/dos-w32.el diff --git a/lisp/dos-w32.el b/lisp/dos-w32.el index cdc3e066ce..bedaa0b996 100644 --- a/lisp/dos-w32.el +++ b/lisp/dos-w32.el @@ -2,7 +2,7 @@ ;; Copyright (C) 1996 Free Software Foundation, Inc. -;; Maintainer: Geoff Voelker (voelker@cs.washington.edu) +;; Maintainer: Geoff Voelker ;; Keywords: internal ;; This file is part of GNU Emacs. @@ -32,27 +32,29 @@ ;; 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") +(setq minibuffer-history-case-insensitive-variables + (cons 'file-name-history minibuffer-history-case-insensitive-variables)) -;; 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))) +;; Set the null device (for compile.el). +(setq null-device "NUL") ;; 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\\)$" . t) + ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|bin\\|ico\\|pif\\|class\\)$" . 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\\)$" . t) ; Packers - ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\)$" . t) + ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\|jar\\)$" . t) ; Unix stuff ("\\.tp[ulpw]$" . t) ; Borland Pascal stuff - ("[:/]tags$" . t) + ("[:/]tags$" . nil) ; Emacs TAGS file ) "*Alist for distinguishing text files from binary files. @@ -72,18 +74,18 @@ against the file name, and TYPE is nil for text, t for binary.") (setq alist (cdr alist))) found))) +;; Don't check for untranslated file systems here. (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 ((match (find-buffer-file-type-match filename)) - (code)) - (if (not match) - default-buffer-file-type - (setq code (cdr match)) - (cond ((memq code '(nil t)) code) - ((and (symbolp code) (fboundp code)) - (funcall code filename))))))) + (let ((match (find-buffer-file-type-match filename)) + (code)) + (if (not match) + default-buffer-file-type + (setq code (cdr match)) + (cond ((memq code '(nil t)) code) + ((and (symbolp code) (fboundp code)) + (funcall code filename)))))) + +(setq-default buffer-file-coding-system 'undecided-dos) (defun find-buffer-file-type-coding-system (command) "Choose a coding system for a file operation. @@ -92,39 +94,67 @@ upon the filename, the contents of `untranslated-filesystem-list' and `file-name-buffer-file-type-alist', and whether the file exists: If it matches in `untranslated-filesystem-list': - If the file exists: `no-conversion' - If the file does not exist: `undecided' + If the file exists: `undecided' + If the file does not exist: `undecided-unix' If it matches in `file-name-buffer-file-type-alist': If the match is t (for binary): `no-conversion' If the match is nil (for dos-text): `undecided-dos' Otherwise: If the file exists: `undecided' - If the file does not exist: `undecided-dos' + If the file does not exist: default-buffer-file-coding-system + +If COMMAND is `write-region', the coding system is chosen based upon +the value of `buffer-file-coding-system' and `buffer-file-type'. If +`buffer-file-coding-system' is non-nil, its value is used. If it is +nil and `buffer-file-type' is t, the coding system is `no-conversion'. +Otherwise, it is `undecided-dos'. + +The two most common situations are when DOS and Unix files are read +and written, and their names do not match in +`untranslated-filesystem-list' and `file-name-buffer-file-type-alist'. +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." -If COMMAND is `write-region', the coding system is chosen based -upon the value of `buffer-file-type': If t, the coding system is -`no-conversion', otherwise it is `undecided-dos'." (let ((op (nth 0 command)) (target) (binary nil) (text nil) - (undecided nil)) + (undecided nil) (undecided-unix nil)) (cond ((eq op 'insert-file-contents) (setq target (nth 1 command)) - (if (untranslated-file-p target) - (if (file-exists-p target) - (setq undecided t) - (setq binary t)) - (setq binary (find-buffer-file-type target)) - (unless binary - (if (find-buffer-file-type-match target) - (setq text t) - (setq undecided (file-exists-p target)))))) - ((eq op 'write-region) - (setq binary buffer-file-type))) - (cond (binary '(no-conversion . no-conversion)) - (text '(undecided-dos . undecided-dos)) - (undecided '(undecided . undecided)) - (t '(undecided-dos . undecided-dos))))) + ;; First check for a file name that indicates + ;; it is truly binary. + (setq binary (find-buffer-file-type target)) + (cond (binary) + ;; Next check for files that MUST use DOS eol conversion. + ((find-buffer-file-type-match target) + (setq text t)) + ;; For any other existing file, decide based on contents. + ((file-exists-p target) + (setq undecided t)) + ;; Next check for a non-DOS file system. + ((untranslated-file-p target) + (setq undecided-unix t))) + (cond (binary '(no-conversion . no-conversion)) + (text '(undecided-dos . undecided-dos)) + (undecided-unix '(undecided-unix . undecided-unix)) + (undecided '(undecided . undecided)) + (t (cons default-buffer-file-coding-system + default-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. + (if buffer-file-type + '(no-conversion . no-conversion) + '(undecided-dos . undecided-dos))))))) (modify-coding-system-alist 'file "" 'find-buffer-file-type-coding-system) @@ -140,15 +170,24 @@ upon the value of `buffer-file-type': If t, the coding system is (let ((file-name-buffer-file-type-alist '(("" . nil)))) (find-file filename))) -(defun find-file-not-found-set-buffer-file-type () +(defun find-file-not-found-set-buffer-file-coding-system () (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) - + (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 + (untranslated-file-p (buffer-file-name)))) + (setq coding (coding-system-change-eol-conversion coding 0)) + (setq buffer-file-coding-system coding)) + (setq buffer-file-type (eq buffer-file-coding-system 'no-conversion))))) + +;;; To set the default coding system on new files. +(add-hook 'find-file-not-found-hooks + 'find-file-not-found-set-buffer-file-coding-system) ;;; To accomodate filesystems that do not require CR/LF translation. (defvar untranslated-filesystem-list nil @@ -171,7 +210,10 @@ dealing with untranslated filesystems." filename nil)) ;; Use expand-file-name to canonicalize directory separators, except ;; with bare drive letters (which would have the cwd appended). - (if (string-match "^.:$" name) + ;; Avoid expanding names that could trigger ange-ftp to prompt + ;; for passwords, though. + (if (or (string-match "^.:$" name) + (string-match "^/[^/:]+:" name)) name (expand-file-name name))) filename)) @@ -193,7 +235,10 @@ CR/LF translation, and nil otherwise." 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: ") + ;; 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 (untranslated-canonical-name filesystem))) (if (member fs untranslated-filesystem-list) untranslated-filesystem-list @@ -210,24 +255,173 @@ filesystem mounted on drive Z:, FILESYSTEM could be \"Z:\"." (delete (untranslated-canonical-name filesystem) untranslated-filesystem-list))) -;; Process I/O decoding and encoding. - -(defun find-binary-process-coding-system (command) - "Choose a coding system for process I/O. -The coding system for decode is 'no-conversion' if 'binary-process-output' -is non-nil, and 'undecided-dos' otherwise. Similarly, the coding system -for encode is 'no-conversion' if 'binary-process-input' is non-nil, -and 'undecided-dos' otherwise." - (let ((decode 'undecided-dos) - (encode 'undecided-dos)) - (if binary-process-output - (setq decode 'no-conversion)) - (if binary-process-input - (setq encode 'no-conversion)) - (cons decode encode))) - -(modify-coding-system-alist 'process "" 'find-binary-process-coding-system) - +;;; Support for printing under DOS/Windows, see lpr.el and ps-print.el. + +(defvar direct-print-region-use-command-dot-com t + "*Control whether command.com is used to print on Windows 9x.") + +;; Function to actually send data to the printer port. +;; Supports writing directly, and using various programs. +(defun 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 "^\\\\" 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 "^nprint\\(\\.exe\\)?$" (file-name-nondirectory lpr-prog)) + (write-region start end tempfile nil 0) + (call-process lpr-prog nil errbuf nil + tempfile (concat "P=" printer))) + ;; print.exe is a standard command on NT + ((string-match "^print\\(\\.exe\\)?$" (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 Win32 + ;; programs from accessing LPT ports reliably. + ((and (eq system-type 'windows-nt) + (getenv "winbootdir") + ;; Allow cop-out so command.com isn't invoked + 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) + +(defun 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) ?\C-l)) + `((,end . "\f")))) + write-region-annotate-functions)) + (printer (or (and (boundp 'dos-printer) + (stringp (symbol-value 'dos-printer)) + (symbol-value 'dos-printer)) + printer-name))) + (or (eq coding-system-for-write 'no-conversion) + (setq coding-system-for-write + (aref eol-type 1))) ; force conversion to DOS EOLs + (direct-print-region-helper printer start end lpr-prog + delete-text buf display rest))) + +(setq print-region-function 'direct-print-region-function) + +;; 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. +(setq lpr-headers-switches "(page headers are not supported)") + +(defvar ps-printer-name) + +(defun 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))) + (direct-print-region-helper printer start end lpr-prog + delete-text buf display rest))) + +(setq ps-print-region-function 'direct-ps-print-region-function) + +;(setq ps-lpr-command "gs") + +;(setq ps-lpr-switches '("-q" "-dNOPAUSE" "-sDEVICE=epson" "-r240x60" +; "-sOutputFile=LPT1")) (provide 'dos-w32)