-;;; lpr.el --- print Emacs buffer on line printer.
+;;; lpr.el --- print Emacs buffer on line printer
-;; Copyright (C) 1985, 1988, 1992, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1988, 1992, 1994, 2001 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: unix
;;; Commentary:
-;; Commands to send the region or a buffer your printer. Entry points
+;; Commands to send the region or a buffer to your printer. Entry points
;; are `lpr-buffer', `print-buffer', lpr-region', or `print-region'; option
-;; variables include `lpr-switches' and `lpr-command'.
+;; variables include `printer-name', `lpr-switches' and `lpr-command'.
;;; Code:
+;;;###autoload
+(defvar lpr-windows-system
+ (memq system-type '(emx win32 w32 mswindows ms-dos windows-nt)))
+
+;;;###autoload
+(defvar lpr-lp-system
+ (memq system-type '(usg-unix-v dgux hpux irix)))
+
+
(defgroup lpr nil
"Print Emacs buffer on line printer"
:group 'wp)
;;;###autoload
-(defcustom lpr-switches nil
+(defcustom printer-name
+ (and lpr-windows-system "PRN")
+ "*The name of a local printer to which data is sent for printing.
+\(Note that PostScript files are sent to `ps-printer-name', which see.\)
+
+On Unix-like systems, a string value should be a name understood by
+lpr's -P option; otherwise the value should be nil.
+
+On MS-DOS and MS-Windows systems, a string value is taken as the name of
+a printer device or port, provided `lpr-command' is set to \"\".
+Typical non-default settings would be \"LPT1\" to \"LPT3\" for parallel
+printers, or \"COM1\" to \"COM4\" or \"AUX\" for serial printers, or
+\"//hostname/printer\" for a shared network printer. You can also set
+it to the name of a file, in which case the output gets appended to that
+file. If you want to discard the printed output, set this to \"NUL\"."
+ :type '(choice :menu-tag "Printer Name"
+ :tag "Printer Name"
+ (const :tag "Default" nil)
+ ;; could use string but then we lose completion for files.
+ (file :tag "Name"))
+ :group 'lpr)
+
+;;;###autoload
+(defcustom lpr-switches nil
"*List of strings to pass as extra options for the printer program.
+It is recommended to set `printer-name' instead of including an explicit
+switch on this list.
See `lpr-command'."
:type '(repeat (string :tag "Argument"))
:group 'lpr)
-(defcustom lpr-add-switches (eq system-type 'berkeley-unix)
- "*Non-nil means construct -T and -J options for the printer program.
+(defcustom lpr-add-switches (memq system-type '(berkeley-unix gnu/linux))
+ "*Non-nil means construct `-T' and `-J' options for the printer program.
These are made assuming that the program is `lpr';
if you are using some other incompatible printer program,
this variable should be nil."
:type 'boolean
:group 'lpr)
+(defcustom lpr-printer-switch
+ (if lpr-lp-system
+ "-d "
+ "-P")
+ "*Printer switch, that is, something like \"-P\", \"-d \", \"/D:\", etc.
+This switch is used in conjunction with `printer-name'."
+ :type '(choice :menu-tag "Printer Name Switch"
+ :tag "Printer Name Switch"
+ (const :tag "None" nil)
+ (string :tag "Printer Switch"))
+ :group 'lpr)
+
;;;###autoload
(defcustom lpr-command
- (if (memq system-type '(usg-unix-v dgux hpux irix))
- "lp" "lpr")
- "*Name of program for printing a file."
+ (cond
+ (lpr-windows-system
+ "")
+ (lpr-lp-system
+ "lp")
+ (t
+ "lpr"))
+ "*Name of program for printing a file.
+
+On MS-DOS and MS-Windows systems, if the value is an empty string then
+Emacs will write directly to the printer port named by `printer-name'.
+The programs `print' and `nprint' (the standard print programs on
+Windows NT and Novell Netware respectively) are handled specially, using
+`printer-name' as the destination for output; any other program is
+treated like `lpr' except that an explicit filename is given as the last
+argument."
:type 'string
:group 'lpr)
(defcustom print-region-function nil
"Function to call to print the region on a printer.
See definition of `print-region-1' for calling conventions."
- :type 'function
+ :type '(choice (const nil) function)
:group 'lpr)
(defcustom lpr-page-header-program "pr"
;;;###autoload
(defun lpr-buffer ()
- "Print buffer contents as with Unix command `lpr'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Print buffer contents without pagination or page headers.
+See the variables `lpr-switches' and `lpr-command'
+for customization of the printer command."
(interactive)
(print-region-1 (point-min) (point-max) lpr-switches nil))
;;;###autoload
(defun print-buffer ()
- "Print buffer contents as with Unix command `lpr -p'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Paginate and print buffer contents.
+
+The variable `lpr-headers-switches' controls how to paginate.
+If it is nil (the default), we run the `pr' program (or whatever program
+`lpr-page-header-program' specifies) to paginate.
+`lpr-page-header-switches' specifies the switches for that program.
+
+Otherwise, the switches in `lpr-headers-switches' are used
+in the print command itself; we expect them to request pagination.
+
+See the variables `lpr-switches' and `lpr-command'
+for further customization of the printer command."
(interactive)
(print-region-1 (point-min) (point-max) lpr-switches t))
;;;###autoload
(defun lpr-region (start end)
- "Print region contents as with Unix command `lpr'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Print region contents without pagination or page headers.
+See the variables `lpr-switches' and `lpr-command'
+for customization of the printer command."
(interactive "r")
(print-region-1 start end lpr-switches nil))
;;;###autoload
(defun print-region (start end)
- "Print region contents as with Unix command `lpr -p'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Paginate and print the region contents.
+
+The variable `lpr-headers-switches' controls how to paginate.
+If it is nil (the default), we run the `pr' program (or whatever program
+`lpr-page-header-program' specifies) to paginate.
+`lpr-page-header-switches' specifies the switches for that program.
+
+Otherwise, the switches in `lpr-headers-switches' are used
+in the print command itself; we expect them to request pagination.
+
+See the variables `lpr-switches' and `lpr-command'
+for further customization of the printer command."
(interactive "r")
(print-region-1 start end lpr-switches t))
;; On some MIPS system, having a space in the job name
;; crashes the printer demon. But using dashes looks ugly
;; and it seems to annoying to do for that MIPS system.
- (let ((name (concat (buffer-name) " Emacs buffer"))
+ (let ((name (concat (buffer-name) " Emacs buffer"))
(title (concat (buffer-name) " Emacs buffer"))
- ;; On MS-DOS systems, make pipes use binary mode if the
- ;; original file is binary.
- (binary-process-input buffer-file-type)
- (binary-process-output buffer-file-type)
+ ;; Make pipes use the same coding system as
+ ;; writing the buffer to a file would.
+ (coding-system-for-write (or coding-system-for-write
+ buffer-file-coding-system))
+ (coding-system-for-read (or coding-system-for-read
+ buffer-file-coding-system))
(width tab-width)
+ nswitches
switch-string)
(save-excursion
- (if page-headers
- (if lpr-headers-switches
- ;; It is possible to use an lpr option
- ;; to get page headers.
- (setq switches (append (if (stringp lpr-headers-switches)
- (list lpr-headers-switches)
- lpr-headers-switches)
- switches))))
- (setq switch-string
- (if switches (concat " with options "
- (mapconcat 'identity switches " "))
- ""))
+ (and page-headers lpr-headers-switches
+ ;; It's possible to use an lpr option to get page headers.
+ (setq switches (append (if (stringp lpr-headers-switches)
+ (list lpr-headers-switches)
+ lpr-headers-switches)
+ switches)))
+ (setq nswitches (lpr-flatten-list
+ (mapcar 'lpr-eval-switch ; Dynamic evaluation
+ switches))
+ switch-string (if switches
+ (concat " with options "
+ (mapconcat 'identity switches " "))
+ ""))
(message "Spooling%s..." switch-string)
(if (/= tab-width 8)
(let ((new-coords (print-region-new-buffer start end)))
- (setq start (car new-coords) end (cdr new-coords))
- (setq tab-width width)
+ (setq start (car new-coords)
+ end (cdr new-coords)
+ tab-width width)
(save-excursion
(goto-char end)
(setq end (point-marker)))
nil
;; Run a separate program to get page headers.
(let ((new-coords (print-region-new-buffer start end)))
- (setq start (car new-coords) end (cdr new-coords)))
- (apply 'call-process-region start end lpr-page-header-program
- t t nil
- (nconc (and lpr-add-switches
- (list "-h" title))
- lpr-page-header-switches))
- (setq start (point-min) end (point-max))))
+ (apply 'call-process-region (car new-coords) (cdr new-coords)
+ lpr-page-header-program t t nil
+ (nconc (list "-h" title)
+ lpr-page-header-switches)))
+ (setq start (point-min)
+ end (point-max))))
(apply (or print-region-function 'call-process-region)
(nconc (list start end lpr-command
nil nil nil)
- (nconc (and lpr-add-switches
- (list "-J" name))
- ;; These belong in pr if we are using that.
- (and lpr-add-switches lpr-headers-switches
- (list "-T" title))
- switches)))
+ (and lpr-add-switches
+ (list "-J" name))
+ ;; These belong in pr if we are using that.
+ (and lpr-add-switches lpr-headers-switches
+ (list "-T" title))
+ (and (stringp printer-name)
+ (list (concat lpr-printer-switch
+ printer-name)))
+ nswitches))
(if (markerp end)
(set-marker end nil))
(message "Spooling%s...done" switch-string))))
(cons ostart oend)
(let ((oldbuf (current-buffer)))
(set-buffer (get-buffer-create " *spool temp*"))
- (widen) (erase-buffer)
+ (widen)
+ (erase-buffer)
(insert-buffer-substring oldbuf ostart oend)
(cons (point-min) (point-max)))))
(while (re-search-forward "[\^@-\^h\^k\^n-\^_\177-\377]" end t)
(setq c (preceding-char))
(delete-backward-char 1)
- (insert
- (if (< c ?\ )
- (format "\\^%c" (+ c ?@))
- (format "\\%02x" c)))))))
+ (insert (if (< c ?\ )
+ (format "\\^%c" (+ c ?@))
+ (format "\\%02x" c)))))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Functions hacked from `ps-print' package.
+
+;; Dynamic evaluation
+(defun lpr-eval-switch (arg)
+ (cond ((stringp arg) arg)
+ ((functionp arg) (apply arg nil))
+ ((symbolp arg) (symbol-value arg))
+ ((consp arg) (apply (car arg) (cdr arg)))
+ (t nil)))
+
+;; `lpr-flatten-list' is defined here (copied from "message.el" and
+;; enhanced to handle dotted pairs as well) until we can get some
+;; sensible autoloads, or `flatten-list' gets put somewhere decent.
+
+;; (lpr-flatten-list '((a . b) c (d . e) (f g h) i . j))
+;; => (a b c d e f g h i j)
+
+(defun lpr-flatten-list (&rest list)
+ (lpr-flatten-list-1 list))
+
+(defun lpr-flatten-list-1 (list)
+ (cond
+ ((null list) (list))
+ ((consp list)
+ (append (lpr-flatten-list-1 (car list))
+ (lpr-flatten-list-1 (cdr list))))
+ (t (list list))))
(provide 'lpr)
HCoop / bpt / emacs.git / blobdiff