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-rw-r--r--usr.sbin/lpr/filters/lpf.c217
1 files changed, 217 insertions, 0 deletions
diff --git a/usr.sbin/lpr/filters/lpf.c b/usr.sbin/lpr/filters/lpf.c
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+++ b/usr.sbin/lpr/filters/lpf.c
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+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1983, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)lpf.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+/*
+ * filter which reads the output of nroff and converts lines
+ * with ^H's to overwritten lines. Thus this works like 'ul'
+ * but is much better: it can handle more than 2 overwrites
+ * and it is written with some style.
+ * modified by kls to use register references instead of arrays
+ * to try to gain a little speed.
+ */
+
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define MAXWIDTH 132
+#define MAXREP 10
+
+char buf[MAXREP][MAXWIDTH];
+int maxcol[MAXREP] = {-1};
+int lineno;
+int width = 132; /* default line length */
+int length = 66; /* page length */
+int indent; /* indentation length */
+int npages = 1;
+int literal; /* print control characters */
+char *name; /* user's login name */
+char *host; /* user's machine name */
+char *acctfile; /* accounting information file */
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register FILE *p = stdin, *o = stdout;
+ register int i, col;
+ register char *cp;
+ int done, linedone, maxrep;
+ char ch, *limit;
+
+ while (--argc) {
+ if (*(cp = *++argv) == '-') {
+ switch (cp[1]) {
+ case 'n':
+ argc--;
+ name = *++argv;
+ break;
+
+ case 'h':
+ argc--;
+ host = *++argv;
+ break;
+
+ case 'w':
+ if ((i = atoi(&cp[2])) > 0 && i <= MAXWIDTH)
+ width = i;
+ break;
+
+ case 'l':
+ length = atoi(&cp[2]);
+ break;
+
+ case 'i':
+ indent = atoi(&cp[2]);
+ break;
+
+ case 'c': /* Print control chars */
+ literal++;
+ break;
+ }
+ } else
+ acctfile = cp;
+ }
+
+ for (cp = buf[0], limit = buf[MAXREP]; cp < limit; *cp++ = ' ');
+ done = 0;
+
+ while (!done) {
+ col = indent;
+ maxrep = -1;
+ linedone = 0;
+ while (!linedone) {
+ switch (ch = getc(p)) {
+ case EOF:
+ linedone = done = 1;
+ ch = '\n';
+ break;
+
+ case '\f':
+ lineno = length;
+ case '\n':
+ if (maxrep < 0)
+ maxrep = 0;
+ linedone = 1;
+ break;
+
+ case '\b':
+ if (--col < indent)
+ col = indent;
+ break;
+
+ case '\r':
+ col = indent;
+ break;
+
+ case '\t':
+ col = ((col - indent) | 07) + indent + 1;
+ break;
+
+ case '\031':
+ /*
+ * lpd needs to use a different filter to
+ * print data so stop what we are doing and
+ * wait for lpd to restart us.
+ */
+ if ((ch = getchar()) == '\1') {
+ fflush(stdout);
+ kill(getpid(), SIGSTOP);
+ break;
+ } else {
+ ungetc(ch, stdin);
+ ch = '\031';
+ }
+
+ default:
+ if (col >= width || !literal && ch < ' ') {
+ col++;
+ break;
+ }
+ cp = &buf[0][col];
+ for (i = 0; i < MAXREP; i++) {
+ if (i > maxrep)
+ maxrep = i;
+ if (*cp == ' ') {
+ *cp = ch;
+ if (col > maxcol[i])
+ maxcol[i] = col;
+ break;
+ }
+ cp += MAXWIDTH;
+ }
+ col++;
+ break;
+ }
+ }
+
+ /* print out lines */
+ for (i = 0; i <= maxrep; i++) {
+ for (cp = buf[i], limit = cp+maxcol[i]; cp <= limit;) {
+ putc(*cp, o);
+ *cp++ = ' ';
+ }
+ if (i < maxrep)
+ putc('\r', o);
+ else
+ putc(ch, o);
+ if (++lineno >= length) {
+ fflush(o);
+ npages++;
+ lineno = 0;
+ }
+ maxcol[i] = -1;
+ }
+ }
+ if (lineno) { /* be sure to end on a page boundary */
+ putchar('\f');
+ npages++;
+ }
+ if (name && acctfile && access(acctfile, 02) >= 0 &&
+ freopen(acctfile, "a", stdout) != NULL) {
+ printf("%7.2f\t%s:%s\n", (float)npages, host, name);
+ }
+ exit(0);
+}
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