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55535639 | 1 | ;;; lpr.el --- print Emacs buffer on line printer |
6594deb0 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1985, 1988, 1992, 1994, 2001, 2002, 2003, |
aaef169d | 4 | ;; 2004, 2005, 2006 Free Software Foundation, Inc. |
3a801d0c | 5 | |
55535639 PJ |
6 | ;; Maintainer: FSF |
7 | ;; Keywords: unix | |
e5167999 | 8 | |
d6c7e99a RS |
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 | |
b578f267 | 22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
d6c7e99a | 25 | |
e41b2db1 ER |
26 | ;;; Commentary: |
27 | ||
bdc9238e | 28 | ;; Commands to send the region or a buffer to your printer. Entry points |
75477452 | 29 | ;; are `lpr-buffer', `print-buffer', `lpr-region', or `print-region'; option |
8748e3eb | 30 | ;; variables include `printer-name', `lpr-switches' and `lpr-command'. |
e41b2db1 | 31 | |
e5167999 | 32 | ;;; Code: |
d6c7e99a | 33 | |
bdc9238e | 34 | ;;;###autoload |
4ad25e43 EZ |
35 | (defvar lpr-windows-system |
36 | (memq system-type '(emx win32 w32 mswindows ms-dos windows-nt))) | |
37 | ||
bdc9238e | 38 | ;;;###autoload |
4ad25e43 EZ |
39 | (defvar lpr-lp-system |
40 | (memq system-type '(usg-unix-v dgux hpux irix))) | |
41 | ||
42 | ||
c5292bc8 | 43 | (defgroup lpr nil |
f93e905f | 44 | "Print Emacs buffer on line printer." |
c5292bc8 RS |
45 | :group 'wp) |
46 | ||
4ad25e43 | 47 | |
8748e3eb RS |
48 | ;;;###autoload |
49 | (defcustom printer-name | |
4ad25e43 | 50 | (and lpr-windows-system "PRN") |
8748e3eb RS |
51 | "*The name of a local printer to which data is sent for printing. |
52 | \(Note that PostScript files are sent to `ps-printer-name', which see.\) | |
53 | ||
54 | On Unix-like systems, a string value should be a name understood by | |
8bc62130 AI |
55 | lpr's -P option; otherwise the value should be nil. |
56 | ||
57 | On MS-DOS and MS-Windows systems, a string value is taken as the name of | |
58 | a printer device or port, provided `lpr-command' is set to \"\". | |
59 | Typical non-default settings would be \"LPT1\" to \"LPT3\" for parallel | |
60 | printers, or \"COM1\" to \"COM4\" or \"AUX\" for serial printers, or | |
61 | \"//hostname/printer\" for a shared network printer. You can also set | |
62 | it to the name of a file, in which case the output gets appended to that | |
63 | file. If you want to discard the printed output, set this to \"NUL\"." | |
4ad25e43 EZ |
64 | :type '(choice :menu-tag "Printer Name" |
65 | :tag "Printer Name" | |
66 | (const :tag "Default" nil) | |
67 | ;; could use string but then we lose completion for files. | |
68 | (file :tag "Name")) | |
8748e3eb | 69 | :group 'lpr) |
c5292bc8 | 70 | |
6503cec3 | 71 | ;;;###autoload |
4ad25e43 | 72 | (defcustom lpr-switches nil |
22466c09 | 73 | "*List of strings to pass as extra options for the printer program. |
8748e3eb RS |
74 | It is recommended to set `printer-name' instead of including an explicit |
75 | switch on this list. | |
c5292bc8 RS |
76 | See `lpr-command'." |
77 | :type '(repeat (string :tag "Argument")) | |
78 | :group 'lpr) | |
3a621cfe | 79 | |
7298f3f7 RS |
80 | (defcustom lpr-add-switches (memq system-type '(berkeley-unix gnu/linux)) |
81 | "*Non-nil means construct `-T' and `-J' options for the printer program. | |
22466c09 KH |
82 | These are made assuming that the program is `lpr'; |
83 | if you are using some other incompatible printer program, | |
c5292bc8 RS |
84 | this variable should be nil." |
85 | :type 'boolean | |
86 | :group 'lpr) | |
d6c7e99a | 87 | |
4ad25e43 EZ |
88 | (defcustom lpr-printer-switch |
89 | (if lpr-lp-system | |
90 | "-d " | |
91 | "-P") | |
92 | "*Printer switch, that is, something like \"-P\", \"-d \", \"/D:\", etc. | |
93 | This switch is used in conjunction with `printer-name'." | |
94 | :type '(choice :menu-tag "Printer Name Switch" | |
95 | :tag "Printer Name Switch" | |
96 | (const :tag "None" nil) | |
97 | (string :tag "Printer Switch")) | |
98 | :group 'lpr) | |
99 | ||
910476ef | 100 | ;;;###autoload |
c5292bc8 | 101 | (defcustom lpr-command |
8bc62130 | 102 | (cond |
4ad25e43 | 103 | (lpr-windows-system |
8bc62130 | 104 | "") |
4ad25e43 | 105 | (lpr-lp-system |
8bc62130 AI |
106 | "lp") |
107 | (t | |
108 | "lpr")) | |
109 | "*Name of program for printing a file. | |
110 | ||
111 | On MS-DOS and MS-Windows systems, if the value is an empty string then | |
112 | Emacs will write directly to the printer port named by `printer-name'. | |
113 | The programs `print' and `nprint' (the standard print programs on | |
114 | Windows NT and Novell Netware respectively) are handled specially, using | |
115 | `printer-name' as the destination for output; any other program is | |
116 | treated like `lpr' except that an explicit filename is given as the last | |
117 | argument." | |
c5292bc8 RS |
118 | :type 'string |
119 | :group 'lpr) | |
d6c7e99a | 120 | |
7173ec77 RS |
121 | ;; Default is nil, because that enables us to use pr -f |
122 | ;; which is more reliable than pr with no args, which is what lpr -p does. | |
c5292bc8 | 123 | (defcustom lpr-headers-switches nil |
5526cfde | 124 | "*List of strings of options to request page headings in the printer program. |
7173ec77 | 125 | If nil, we run `lpr-page-header-program' to make page headings |
c5292bc8 RS |
126 | and print the result." |
127 | :type '(repeat (string :tag "Argument")) | |
128 | :group 'lpr) | |
3a621cfe | 129 | |
c5292bc8 | 130 | (defcustom print-region-function nil |
d6c7e99a | 131 | "Function to call to print the region on a printer. |
c5292bc8 | 132 | See definition of `print-region-1' for calling conventions." |
53c9f0fa | 133 | :type '(choice (const nil) function) |
c5292bc8 | 134 | :group 'lpr) |
d6c7e99a | 135 | |
c5292bc8 RS |
136 | (defcustom lpr-page-header-program "pr" |
137 | "*Name of program for adding page headers to a file." | |
138 | :type 'string | |
139 | :group 'lpr) | |
c820123b | 140 | |
bafa1a69 RS |
141 | ;; Berkeley systems support -F, and GNU pr supports both -f and -F, |
142 | ;; So it looks like -F is a better default. | |
9f84479b | 143 | (defcustom lpr-page-header-switches '("-F") |
5526cfde | 144 | "*List of strings to use as options for the page-header-generating program. |
c5292bc8 RS |
145 | The variable `lpr-page-header-program' specifies the program to use." |
146 | :type '(repeat string) | |
147 | :group 'lpr) | |
c820123b | 148 | |
7229064d | 149 | ;;;###autoload |
d6c7e99a | 150 | (defun lpr-buffer () |
d7e110e4 RS |
151 | "Print buffer contents without pagination or page headers. |
152 | See the variables `lpr-switches' and `lpr-command' | |
153 | for customization of the printer command." | |
d6c7e99a RS |
154 | (interactive) |
155 | (print-region-1 (point-min) (point-max) lpr-switches nil)) | |
156 | ||
7229064d | 157 | ;;;###autoload |
d6c7e99a | 158 | (defun print-buffer () |
e20192f4 | 159 | "Paginate and print buffer contents. |
e20192f4 | 160 | |
d7e110e4 RS |
161 | The variable `lpr-headers-switches' controls how to paginate. |
162 | If it is nil (the default), we run the `pr' program (or whatever program | |
163 | `lpr-page-header-program' specifies) to paginate. | |
164 | `lpr-page-header-switches' specifies the switches for that program. | |
165 | ||
166 | Otherwise, the switches in `lpr-headers-switches' are used | |
167 | in the print command itself; we expect them to request pagination. | |
f1180544 | 168 | |
d7e110e4 RS |
169 | See the variables `lpr-switches' and `lpr-command' |
170 | for further customization of the printer command." | |
d6c7e99a RS |
171 | (interactive) |
172 | (print-region-1 (point-min) (point-max) lpr-switches t)) | |
173 | ||
7229064d | 174 | ;;;###autoload |
d6c7e99a | 175 | (defun lpr-region (start end) |
d7e110e4 RS |
176 | "Print region contents without pagination or page headers. |
177 | See the variables `lpr-switches' and `lpr-command' | |
178 | for customization of the printer command." | |
d6c7e99a RS |
179 | (interactive "r") |
180 | (print-region-1 start end lpr-switches nil)) | |
181 | ||
7229064d | 182 | ;;;###autoload |
d6c7e99a | 183 | (defun print-region (start end) |
d7e110e4 RS |
184 | "Paginate and print the region contents. |
185 | ||
186 | The variable `lpr-headers-switches' controls how to paginate. | |
187 | If it is nil (the default), we run the `pr' program (or whatever program | |
188 | `lpr-page-header-program' specifies) to paginate. | |
189 | `lpr-page-header-switches' specifies the switches for that program. | |
190 | ||
191 | Otherwise, the switches in `lpr-headers-switches' are used | |
192 | in the print command itself; we expect them to request pagination. | |
f1180544 | 193 | |
d7e110e4 RS |
194 | See the variables `lpr-switches' and `lpr-command' |
195 | for further customization of the printer command." | |
d6c7e99a RS |
196 | (interactive "r") |
197 | (print-region-1 start end lpr-switches t)) | |
198 | ||
199 | (defun print-region-1 (start end switches page-headers) | |
904d7624 RS |
200 | ;; On some MIPS system, having a space in the job name |
201 | ;; crashes the printer demon. But using dashes looks ugly | |
202 | ;; and it seems to annoying to do for that MIPS system. | |
4ad25e43 | 203 | (let ((name (concat (buffer-name) " Emacs buffer")) |
a8037455 | 204 | (title (concat (buffer-name) " Emacs buffer")) |
0b45d07b EZ |
205 | ;; Make pipes use the same coding system as |
206 | ;; writing the buffer to a file would. | |
4ad25e43 EZ |
207 | (coding-system-for-write (or coding-system-for-write |
208 | buffer-file-coding-system)) | |
209 | (coding-system-for-read (or coding-system-for-read | |
210 | buffer-file-coding-system)) | |
5bbf28a8 | 211 | (width tab-width) |
4ad25e43 | 212 | nswitches |
5bbf28a8 | 213 | switch-string) |
d6c7e99a | 214 | (save-excursion |
4ad25e43 EZ |
215 | (and page-headers lpr-headers-switches |
216 | ;; It's possible to use an lpr option to get page headers. | |
217 | (setq switches (append (if (stringp lpr-headers-switches) | |
218 | (list lpr-headers-switches) | |
219 | lpr-headers-switches) | |
220 | switches))) | |
221 | (setq nswitches (lpr-flatten-list | |
222 | (mapcar 'lpr-eval-switch ; Dynamic evaluation | |
223 | switches)) | |
224 | switch-string (if switches | |
225 | (concat " with options " | |
226 | (mapconcat 'identity switches " ")) | |
227 | "")) | |
5bbf28a8 | 228 | (message "Spooling%s..." switch-string) |
d6c7e99a | 229 | (if (/= tab-width 8) |
8fa64b34 | 230 | (let ((new-coords (print-region-new-buffer start end))) |
4ad25e43 EZ |
231 | (setq start (car new-coords) |
232 | end (cdr new-coords) | |
233 | tab-width width) | |
2adf4f61 RS |
234 | (save-excursion |
235 | (goto-char end) | |
236 | (setq end (point-marker))) | |
d6c7e99a RS |
237 | (untabify (point-min) (point-max)))) |
238 | (if page-headers | |
3a621cfe | 239 | (if lpr-headers-switches |
5bbf28a8 RS |
240 | ;; We handled this above by modifying SWITCHES. |
241 | nil | |
7173ec77 | 242 | ;; Run a separate program to get page headers. |
8fa64b34 | 243 | (let ((new-coords (print-region-new-buffer start end))) |
4ad25e43 EZ |
244 | (apply 'call-process-region (car new-coords) (cdr new-coords) |
245 | lpr-page-header-program t t nil | |
9f84479b RS |
246 | (nconc (list "-h" title) |
247 | lpr-page-header-switches))) | |
4ad25e43 EZ |
248 | (setq start (point-min) |
249 | end (point-max)))) | |
250 | (apply (or print-region-function 'call-process-region) | |
251 | (nconc (list start end lpr-command | |
252 | nil nil nil) | |
253 | (and lpr-add-switches | |
254 | (list "-J" name)) | |
255 | ;; These belong in pr if we are using that. | |
256 | (and lpr-add-switches lpr-headers-switches | |
257 | (list "-T" title)) | |
258 | (and (stringp printer-name) | |
259 | (list (concat lpr-printer-switch | |
260 | printer-name))) | |
261 | nswitches)) | |
2adf4f61 RS |
262 | (if (markerp end) |
263 | (set-marker end nil)) | |
5bbf28a8 | 264 | (message "Spooling%s...done" switch-string)))) |
d6c7e99a RS |
265 | |
266 | ;; This function copies the text between start and end | |
8fa64b34 RS |
267 | ;; into a new buffer, makes that buffer current. |
268 | ;; It returns the new range to print from the new current buffer | |
269 | ;; as (START . END). | |
270 | ||
3a621cfe | 271 | (defun print-region-new-buffer (ostart oend) |
8fa64b34 RS |
272 | (if (string= (buffer-name) " *spool temp*") |
273 | (cons ostart oend) | |
274 | (let ((oldbuf (current-buffer))) | |
275 | (set-buffer (get-buffer-create " *spool temp*")) | |
4ad25e43 EZ |
276 | (widen) |
277 | (erase-buffer) | |
8fa64b34 RS |
278 | (insert-buffer-substring oldbuf ostart oend) |
279 | (cons (point-min) (point-max))))) | |
6594deb0 | 280 | |
1c2df063 | 281 | (defun printify-region (begin end) |
8c44b2ad RS |
282 | "Replace nonprinting characters in region with printable representations. |
283 | The printable representations use ^ (for ASCII control characters) or hex. | |
284 | The characters tab, linefeed, space, return and formfeed are not affected." | |
1c2df063 ER |
285 | (interactive "r") |
286 | (save-excursion | |
5a1173cb VJL |
287 | (save-restriction |
288 | (narrow-to-region begin end) | |
289 | (goto-char (point-min)) | |
290 | (let (c) | |
291 | (while (re-search-forward "[\^@-\^h\^k\^n-\^_\177-\377]" nil t) | |
292 | (setq c (preceding-char)) | |
293 | (delete-backward-char 1) | |
f93e905f | 294 | (insert (if (< c ?\s) |
5a1173cb VJL |
295 | (format "\\^%c" (+ c ?@)) |
296 | (format "\\%02x" c)))))))) | |
4ad25e43 EZ |
297 | |
298 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
299 | ;; Functions hacked from `ps-print' package. | |
300 | ||
301 | ;; Dynamic evaluation | |
302 | (defun lpr-eval-switch (arg) | |
303 | (cond ((stringp arg) arg) | |
304 | ((functionp arg) (apply arg nil)) | |
305 | ((symbolp arg) (symbol-value arg)) | |
306 | ((consp arg) (apply (car arg) (cdr arg))) | |
307 | (t nil))) | |
308 | ||
309 | ;; `lpr-flatten-list' is defined here (copied from "message.el" and | |
310 | ;; enhanced to handle dotted pairs as well) until we can get some | |
311 | ;; sensible autoloads, or `flatten-list' gets put somewhere decent. | |
312 | ||
313 | ;; (lpr-flatten-list '((a . b) c (d . e) (f g h) i . j)) | |
314 | ;; => (a b c d e f g h i j) | |
315 | ||
316 | (defun lpr-flatten-list (&rest list) | |
317 | (lpr-flatten-list-1 list)) | |
318 | ||
319 | (defun lpr-flatten-list-1 (list) | |
320 | (cond | |
321 | ((null list) (list)) | |
322 | ((consp list) | |
323 | (append (lpr-flatten-list-1 (car list)) | |
324 | (lpr-flatten-list-1 (cdr list)))) | |
325 | (t (list list)))) | |
1c2df063 | 326 | |
977b1278 KH |
327 | (provide 'lpr) |
328 | ||
ab5796a9 | 329 | ;;; arch-tag: 21c3f821-ebec-4ca9-ac67-a81e4b75c62a |
6594deb0 | 330 | ;;; lpr.el ends here |