2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)lpf.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.sbin/lpr/filters/lpf.c,v 1.6.2.2 2001/10/13 19:01:45 gad Exp $
36 * $DragonFly: src/usr.sbin/lpr/filters/lpf.c,v 1.3 2004/03/22 22:32:50 cpressey Exp $
40 * filter which reads the output of nroff and converts lines
41 * with ^H's to overwritten lines. Thus this works like 'ul'
42 * but is much better: it can handle more than 2 overwrites
43 * and it is written with some style.
44 * modified by kls to use register references instead of arrays
45 * to try to gain a little speed.
46 * further modified to let the compiler figure out which
47 * variables should be registers; they're very good at it these days.
58 char buf[MAXREP][MAXWIDTH];
59 int maxcol[MAXREP] = {-1};
61 int width = 132; /* default line length */
62 int length = 66; /* page length */
63 int indent; /* indentation length */
65 int literal; /* print control characters */
66 char *name; /* user's login name */
67 char *host; /* user's machine name */
68 char *acctfile; /* accounting information file */
71 main(int argc, char **argv)
73 FILE *p = stdin, *o = stdout;
76 int done, linedone, maxrep;
81 if (*(cp = *++argv) == '-') {
94 if ((i = atoi(&cp[2])) > 0 && i <= MAXWIDTH)
99 length = atoi(&cp[2]);
103 indent = atoi(&cp[2]);
106 case 'c': /* Print control chars */
114 for (cp = buf[0], limit = buf[MAXREP]; cp < limit; *cp++ = ' ');
122 switch (ch = getc(p)) {
146 col = ((col - indent) | 07) + indent + 1;
151 * lpd needs to use a different filter to
152 * print data so stop what we are doing and
153 * wait for lpd to restart us.
155 if ((ch = getchar()) == '\1') {
157 kill(getpid(), SIGSTOP);
165 if (col >= width || (!literal && ch < ' ')) {
170 for (i = 0; i < MAXREP; i++) {
186 /* print out lines */
187 for (i = 0; i <= maxrep; i++) {
188 for (cp = buf[i], limit = cp+maxcol[i]; cp <= limit;) {
196 if (++lineno >= length) {
204 if (lineno) { /* be sure to end on a page boundary */
208 if (name && acctfile && access(acctfile, 02) >= 0 &&
209 freopen(acctfile, "a", stdout) != NULL) {
210 printf("%7.2f\t%s:%s\n", (float)npages, host, name);