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1 | ;;; lpr.el --- print Emacs buffer on line printer. |
2 | ||
e5167999 ER |
3 | ;; Maintainer: FSF |
4 | ;; Last-Modified: 19 Apr 1992 | |
fd7fa35a | 5 | ;; Keywords: unix |
e5167999 | 6 | |
46947372 | 7 | ;; Copyright (C) 1985, 1988, 1992 Free Software Foundation, Inc. |
d6c7e99a RS |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 13 | ;; the Free Software Foundation; either version 2, or (at your option) |
d6c7e99a RS |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
23 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
e5167999 | 25 | ;;; Code: |
d6c7e99a | 26 | |
6503cec3 JB |
27 | ;;;###autoload |
28 | (defconst lpr-switches nil "\ | |
29 | *List of strings to pass as extra switch args to lpr when it is invoked.") | |
d6c7e99a RS |
30 | |
31 | (defvar lpr-command (if (eq system-type 'usg-unix-v) | |
32 | "lp" "lpr") | |
46947372 | 33 | "*Shell command for printing a file") |
d6c7e99a RS |
34 | |
35 | (defvar print-region-function nil | |
36 | "Function to call to print the region on a printer. | |
ac5b56bc | 37 | See definition of `print-region-1' for calling conventions.") |
d6c7e99a | 38 | |
7229064d | 39 | ;;;###autoload |
d6c7e99a RS |
40 | (defun lpr-buffer () |
41 | "Print buffer contents as with Unix command `lpr'. | |
42 | `lpr-switches' is a list of extra switches (strings) to pass to lpr." | |
43 | (interactive) | |
44 | (print-region-1 (point-min) (point-max) lpr-switches nil)) | |
45 | ||
7229064d | 46 | ;;;###autoload |
d6c7e99a RS |
47 | (defun print-buffer () |
48 | "Print buffer contents as with Unix command `lpr -p'. | |
49 | `lpr-switches' is a list of extra switches (strings) to pass to lpr." | |
50 | (interactive) | |
51 | (print-region-1 (point-min) (point-max) lpr-switches t)) | |
52 | ||
7229064d | 53 | ;;;###autoload |
d6c7e99a RS |
54 | (defun lpr-region (start end) |
55 | "Print region contents as with Unix command `lpr'. | |
56 | `lpr-switches' is a list of extra switches (strings) to pass to lpr." | |
57 | (interactive "r") | |
58 | (print-region-1 start end lpr-switches nil)) | |
59 | ||
7229064d | 60 | ;;;###autoload |
d6c7e99a RS |
61 | (defun print-region (start end) |
62 | "Print region contents as with Unix command `lpr -p'. | |
63 | `lpr-switches' is a list of extra switches (strings) to pass to lpr." | |
64 | (interactive "r") | |
65 | (print-region-1 start end lpr-switches t)) | |
66 | ||
67 | (defun print-region-1 (start end switches page-headers) | |
68 | (let ((name (concat (buffer-name) " Emacs buffer")) | |
69 | (width tab-width)) | |
70 | (save-excursion | |
71 | (message "Spooling...") | |
72 | (if (/= tab-width 8) | |
73 | (progn | |
74 | (print-region-new-buffer start end) | |
75 | (setq tab-width width) | |
76 | (untabify (point-min) (point-max)))) | |
77 | (if page-headers | |
78 | (if (eq system-type 'usg-unix-v) | |
79 | (progn | |
80 | (print-region-new-buffer) | |
81 | (call-process-region start end "pr" t t nil)) | |
82 | ;; On BSD, use an option to get page headers. | |
83 | (setq switches (cons "-p" switches)))) | |
84 | (apply (or print-region-function 'call-process-region) | |
85 | (nconc (list start end lpr-command | |
86 | nil nil nil) | |
87 | (nconc (and (eq system-type 'berkeley-unix) | |
88 | (list "-J" name "-T" name)) | |
89 | switches))) | |
90 | (message "Spooling...done")))) | |
91 | ||
92 | ;; This function copies the text between start and end | |
93 | ;; into a new buffer, makes that buffer current, | |
94 | ;; and sets start and end to the buffer bounds. | |
95 | ;; start and end are used free. | |
96 | (defun print-region-new-buffer () | |
97 | (or (string= (buffer-name) " *spool temp*") | |
98 | (let ((oldbuf (current-buffer))) | |
99 | (set-buffer (get-buffer-create " *spool temp*")) | |
100 | (widen) (erase-buffer) | |
101 | (insert-buffer-substring oldbuf start end) | |
102 | (setq start (point-min) end (point-max))))) | |
6594deb0 ER |
103 | |
104 | ;;; lpr.el ends here |