1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 28*0Sstevel@tonic-gate * The Regents of the University of California 29*0Sstevel@tonic-gate * All Rights Reserved 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 32*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 33*0Sstevel@tonic-gate * contributors. 34*0Sstevel@tonic-gate */ 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #include <stdio.h> 39*0Sstevel@tonic-gate /* 40*0Sstevel@tonic-gate * fold - fold long lines for finite output devices 41*0Sstevel@tonic-gate * 42*0Sstevel@tonic-gate */ 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate int fold = 80; 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate main(argc, argv) 47*0Sstevel@tonic-gate int argc; 48*0Sstevel@tonic-gate char *argv[]; 49*0Sstevel@tonic-gate { 50*0Sstevel@tonic-gate register c; 51*0Sstevel@tonic-gate FILE *f; 52*0Sstevel@tonic-gate char obuf[BUFSIZ]; 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate argc--, argv++; 55*0Sstevel@tonic-gate setbuf(stdout, obuf); 56*0Sstevel@tonic-gate if (argc > 0 && argv[0][0] == '-') { 57*0Sstevel@tonic-gate fold = 0; 58*0Sstevel@tonic-gate argv[0]++; 59*0Sstevel@tonic-gate while (*argv[0] >= '0' && *argv[0] <= '9') 60*0Sstevel@tonic-gate fold *= 10, fold += *argv[0]++ - '0'; 61*0Sstevel@tonic-gate if (*argv[0]) { 62*0Sstevel@tonic-gate printf("Bad number for fold\n"); 63*0Sstevel@tonic-gate exit(1); 64*0Sstevel@tonic-gate } 65*0Sstevel@tonic-gate argc--, argv++; 66*0Sstevel@tonic-gate } 67*0Sstevel@tonic-gate do { 68*0Sstevel@tonic-gate if (argc > 0) { 69*0Sstevel@tonic-gate if (freopen(argv[0], "r", stdin) == NULL) { 70*0Sstevel@tonic-gate perror(argv[0]); 71*0Sstevel@tonic-gate exit(1); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate argc--, argv++; 74*0Sstevel@tonic-gate } 75*0Sstevel@tonic-gate for (;;) { 76*0Sstevel@tonic-gate c = getc(stdin); 77*0Sstevel@tonic-gate if (c == -1) 78*0Sstevel@tonic-gate break; 79*0Sstevel@tonic-gate putch(c); 80*0Sstevel@tonic-gate } 81*0Sstevel@tonic-gate } while (argc > 0); 82*0Sstevel@tonic-gate exit(0); 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate int col; 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate putch(c) 88*0Sstevel@tonic-gate register c; 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate register ncol; 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate switch (c) { 93*0Sstevel@tonic-gate case '\n': 94*0Sstevel@tonic-gate ncol = 0; 95*0Sstevel@tonic-gate break; 96*0Sstevel@tonic-gate case '\t': 97*0Sstevel@tonic-gate ncol = (col + 8) &~ 7; 98*0Sstevel@tonic-gate break; 99*0Sstevel@tonic-gate case '\b': 100*0Sstevel@tonic-gate ncol = col ? col - 1 : 0; 101*0Sstevel@tonic-gate break; 102*0Sstevel@tonic-gate case '\r': 103*0Sstevel@tonic-gate ncol = 0; 104*0Sstevel@tonic-gate break; 105*0Sstevel@tonic-gate default: 106*0Sstevel@tonic-gate ncol = col + 1; 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate if (ncol > fold) 109*0Sstevel@tonic-gate putchar('\n'), col = 0; 110*0Sstevel@tonic-gate putchar(c); 111*0Sstevel@tonic-gate switch (c) { 112*0Sstevel@tonic-gate case '\n': 113*0Sstevel@tonic-gate col = 0; 114*0Sstevel@tonic-gate break; 115*0Sstevel@tonic-gate case '\t': 116*0Sstevel@tonic-gate col += 8; 117*0Sstevel@tonic-gate col &= ~7; 118*0Sstevel@tonic-gate break; 119*0Sstevel@tonic-gate case '\b': 120*0Sstevel@tonic-gate if (col) 121*0Sstevel@tonic-gate col--; 122*0Sstevel@tonic-gate break; 123*0Sstevel@tonic-gate case '\r': 124*0Sstevel@tonic-gate col = 0; 125*0Sstevel@tonic-gate break; 126*0Sstevel@tonic-gate default: 127*0Sstevel@tonic-gate col++; 128*0Sstevel@tonic-gate break; 129*0Sstevel@tonic-gate } 130*0Sstevel@tonic-gate } 131