10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
70Sstevel@tonic-gate * with the License.
80Sstevel@tonic-gate *
90Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate * See the License for the specific language governing permissions
120Sstevel@tonic-gate * and limitations under the License.
130Sstevel@tonic-gate *
140Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate *
200Sstevel@tonic-gate * CDDL HEADER END
210Sstevel@tonic-gate */
22*802Scf46844 /*
23*802Scf46844 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24*802Scf46844 * Use is subject to license terms.
25*802Scf46844 */
26*802Scf46844
270Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
300Sstevel@tonic-gate /*
310Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988
320Sstevel@tonic-gate * The Regents of the University of California
330Sstevel@tonic-gate * All Rights Reserved
340Sstevel@tonic-gate *
350Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from
360Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its
370Sstevel@tonic-gate * contributors.
380Sstevel@tonic-gate */
390Sstevel@tonic-gate
400Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
410Sstevel@tonic-gate
420Sstevel@tonic-gate #include <stdio.h>
430Sstevel@tonic-gate /*
440Sstevel@tonic-gate * fold - fold long lines for finite output devices
450Sstevel@tonic-gate *
460Sstevel@tonic-gate */
470Sstevel@tonic-gate
480Sstevel@tonic-gate int fold = 80;
490Sstevel@tonic-gate
50*802Scf46844 void putch(int c);
51*802Scf46844
52*802Scf46844 int
main(int argc,char * argv[])53*802Scf46844 main(int argc, char *argv[])
540Sstevel@tonic-gate {
55*802Scf46844 int c;
560Sstevel@tonic-gate FILE *f;
570Sstevel@tonic-gate char obuf[BUFSIZ];
580Sstevel@tonic-gate
590Sstevel@tonic-gate argc--, argv++;
600Sstevel@tonic-gate setbuf(stdout, obuf);
610Sstevel@tonic-gate if (argc > 0 && argv[0][0] == '-') {
620Sstevel@tonic-gate fold = 0;
630Sstevel@tonic-gate argv[0]++;
640Sstevel@tonic-gate while (*argv[0] >= '0' && *argv[0] <= '9')
650Sstevel@tonic-gate fold *= 10, fold += *argv[0]++ - '0';
660Sstevel@tonic-gate if (*argv[0]) {
670Sstevel@tonic-gate printf("Bad number for fold\n");
680Sstevel@tonic-gate exit(1);
690Sstevel@tonic-gate }
700Sstevel@tonic-gate argc--, argv++;
710Sstevel@tonic-gate }
720Sstevel@tonic-gate do {
730Sstevel@tonic-gate if (argc > 0) {
740Sstevel@tonic-gate if (freopen(argv[0], "r", stdin) == NULL) {
750Sstevel@tonic-gate perror(argv[0]);
760Sstevel@tonic-gate exit(1);
770Sstevel@tonic-gate }
780Sstevel@tonic-gate argc--, argv++;
790Sstevel@tonic-gate }
800Sstevel@tonic-gate for (;;) {
810Sstevel@tonic-gate c = getc(stdin);
820Sstevel@tonic-gate if (c == -1)
830Sstevel@tonic-gate break;
840Sstevel@tonic-gate putch(c);
850Sstevel@tonic-gate }
860Sstevel@tonic-gate } while (argc > 0);
87*802Scf46844 return (0);
880Sstevel@tonic-gate }
890Sstevel@tonic-gate
900Sstevel@tonic-gate int col;
910Sstevel@tonic-gate
92*802Scf46844 void
putch(int c)93*802Scf46844 putch(int c)
940Sstevel@tonic-gate {
95*802Scf46844 int ncol;
960Sstevel@tonic-gate
970Sstevel@tonic-gate switch (c) {
980Sstevel@tonic-gate case '\n':
990Sstevel@tonic-gate ncol = 0;
1000Sstevel@tonic-gate break;
1010Sstevel@tonic-gate case '\t':
1020Sstevel@tonic-gate ncol = (col + 8) &~ 7;
1030Sstevel@tonic-gate break;
1040Sstevel@tonic-gate case '\b':
1050Sstevel@tonic-gate ncol = col ? col - 1 : 0;
1060Sstevel@tonic-gate break;
1070Sstevel@tonic-gate case '\r':
1080Sstevel@tonic-gate ncol = 0;
1090Sstevel@tonic-gate break;
1100Sstevel@tonic-gate default:
1110Sstevel@tonic-gate ncol = col + 1;
1120Sstevel@tonic-gate }
1130Sstevel@tonic-gate if (ncol > fold)
1140Sstevel@tonic-gate putchar('\n'), col = 0;
1150Sstevel@tonic-gate putchar(c);
1160Sstevel@tonic-gate switch (c) {
1170Sstevel@tonic-gate case '\n':
1180Sstevel@tonic-gate col = 0;
1190Sstevel@tonic-gate break;
1200Sstevel@tonic-gate case '\t':
1210Sstevel@tonic-gate col += 8;
1220Sstevel@tonic-gate col &= ~7;
1230Sstevel@tonic-gate break;
1240Sstevel@tonic-gate case '\b':
1250Sstevel@tonic-gate if (col)
1260Sstevel@tonic-gate col--;
1270Sstevel@tonic-gate break;
1280Sstevel@tonic-gate case '\r':
1290Sstevel@tonic-gate col = 0;
1300Sstevel@tonic-gate break;
1310Sstevel@tonic-gate default:
1320Sstevel@tonic-gate col++;
1330Sstevel@tonic-gate break;
1340Sstevel@tonic-gate }
1350Sstevel@tonic-gate }
136