11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1991, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 301590Srgrimes#ifndef lint 3141568Sarchiestatic const char copyright[] = 321590Srgrimes"@(#) Copyright (c) 1991, 1993\n\ 331590Srgrimes The Regents of the University of California. All rights reserved.\n"; 3487244Smarkm#endif 351590Srgrimes 3687628Sdwmalone#if 0 371590Srgrimes#ifndef lint 3887628Sdwmalonestatic char sccsid[] = "@(#)colrm.c 8.2 (Berkeley) 5/4/95"; 3987244Smarkm#endif 4087628Sdwmalone#endif 411590Srgrimes 4287628Sdwmalone#include <sys/cdefs.h> 4387628Sdwmalone__FBSDID("$FreeBSD$"); 4487628Sdwmalone 451590Srgrimes#include <sys/types.h> 4626960Scharnier#include <err.h> 47200462Sdelphij#include <errno.h> 48200462Sdelphij#include <limits.h> 49132831Stjr#include <locale.h> 501590Srgrimes#include <stdio.h> 511590Srgrimes#include <stdlib.h> 52200462Sdelphij#include <string.h> 5323690Speter#include <unistd.h> 54132831Stjr#include <wchar.h> 551590Srgrimes 561590Srgrimes#define TAB 8 571590Srgrimes 5892920Simpvoid check(FILE *); 5992920Simpstatic void usage(void); 601590Srgrimes 611590Srgrimesint 62100817Sdwmalonemain(int argc, char *argv[]) 631590Srgrimes{ 6487244Smarkm u_long column, start, stop; 65132831Stjr int ch, width; 661590Srgrimes char *p; 671590Srgrimes 68132831Stjr setlocale(LC_ALL, ""); 69132831Stjr 7024360Simp while ((ch = getopt(argc, argv, "")) != -1) 711590Srgrimes switch(ch) { 721590Srgrimes case '?': 731590Srgrimes default: 741590Srgrimes usage(); 751590Srgrimes } 761590Srgrimes argc -= optind; 771590Srgrimes argv += optind; 781590Srgrimes 791590Srgrimes start = stop = 0; 801590Srgrimes switch(argc) { 811590Srgrimes case 2: 821590Srgrimes stop = strtol(argv[1], &p, 10); 831590Srgrimes if (stop <= 0 || *p) 8426960Scharnier errx(1, "illegal column -- %s", argv[1]); 851590Srgrimes /* FALLTHROUGH */ 861590Srgrimes case 1: 871590Srgrimes start = strtol(argv[0], &p, 10); 881590Srgrimes if (start <= 0 || *p) 8926960Scharnier errx(1, "illegal column -- %s", argv[0]); 901590Srgrimes break; 911590Srgrimes case 0: 921590Srgrimes break; 931590Srgrimes default: 941590Srgrimes usage(); 951590Srgrimes } 961590Srgrimes 971590Srgrimes if (stop && start > stop) 9826960Scharnier errx(1, "illegal start and stop columns"); 991590Srgrimes 1001590Srgrimes for (column = 0;;) { 101132831Stjr switch (ch = getwchar()) { 102132831Stjr case WEOF: 1031590Srgrimes check(stdin); 1041590Srgrimes break; 1051590Srgrimes case '\b': 1061590Srgrimes if (column) 1071590Srgrimes --column; 1081590Srgrimes break; 1091590Srgrimes case '\n': 1101590Srgrimes column = 0; 1111590Srgrimes break; 1121590Srgrimes case '\t': 1131590Srgrimes column = (column + TAB) & ~(TAB - 1); 1141590Srgrimes break; 1151590Srgrimes default: 116132831Stjr if ((width = wcwidth(ch)) > 0) 117132831Stjr column += width; 1181590Srgrimes break; 1191590Srgrimes } 1201590Srgrimes 12132069Salex if ((!start || column < start || (stop && column > stop)) && 122132831Stjr putwchar(ch) == WEOF) 1231590Srgrimes check(stdout); 1241590Srgrimes } 1251590Srgrimes} 1261590Srgrimes 1271590Srgrimesvoid 128100817Sdwmalonecheck(FILE *stream) 1291590Srgrimes{ 1301590Srgrimes if (feof(stream)) 1311590Srgrimes exit(0); 1321590Srgrimes if (ferror(stream)) 13326960Scharnier err(1, "%s", stream == stdin ? "stdin" : "stdout"); 1341590Srgrimes} 1351590Srgrimes 1361590Srgrimesvoid 137100817Sdwmaloneusage(void) 1381590Srgrimes{ 1391590Srgrimes (void)fprintf(stderr, "usage: colrm [start [stop]]\n"); 1401590Srgrimes exit(1); 1411590Srgrimes} 1421590Srgrimes 143