11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1991, 1993, 1994 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 3087628Sdwmalone#if 0 3187628Sdwmalone#ifndef lint 3287628Sdwmalonestatic char sccsid[] = "@(#)special.c 8.3 (Berkeley) 4/2/94"; 3387628Sdwmalone#endif 3487628Sdwmalone#endif 3587628Sdwmalone 3687241Smarkm#include <sys/cdefs.h> 3787241Smarkm__FBSDID("$FreeBSD$"); 3887241Smarkm 391590Srgrimes#include <sys/types.h> 401590Srgrimes 411590Srgrimes#include <err.h> 421590Srgrimes#include <stdlib.h> 431590Srgrimes#include <stdio.h> 441590Srgrimes 451590Srgrimes#include "extern.h" 461590Srgrimes 471590Srgrimesvoid 48100815Sdwmalonec_special(int fd1, const char *file1, off_t skip1, 49100815Sdwmalone int fd2, const char *file2, off_t skip2) 501590Srgrimes{ 511590Srgrimes int ch1, ch2; 521590Srgrimes off_t byte, line; 531590Srgrimes FILE *fp1, *fp2; 541590Srgrimes int dfound; 551590Srgrimes 561590Srgrimes if ((fp1 = fdopen(fd1, "r")) == NULL) 571590Srgrimes err(ERR_EXIT, "%s", file1); 581590Srgrimes if ((fp2 = fdopen(fd2, "r")) == NULL) 591590Srgrimes err(ERR_EXIT, "%s", file2); 601590Srgrimes 6121429Sjoerg dfound = 0; 621590Srgrimes while (skip1--) 631590Srgrimes if (getc(fp1) == EOF) 641590Srgrimes goto eof; 651590Srgrimes while (skip2--) 661590Srgrimes if (getc(fp2) == EOF) 671590Srgrimes goto eof; 681590Srgrimes 691590Srgrimes for (byte = line = 1;; ++byte) { 701590Srgrimes ch1 = getc(fp1); 711590Srgrimes ch2 = getc(fp2); 721590Srgrimes if (ch1 == EOF || ch2 == EOF) 731590Srgrimes break; 7446081Simp if (ch1 != ch2) { 75116572Smurray if (xflag) { 761590Srgrimes dfound = 1; 77116572Smurray (void)printf("%08llx %02x %02x\n", 78116572Smurray (long long)byte - 1, ch1, ch2); 79116572Smurray } else if (lflag) { 80116572Smurray dfound = 1; 8187282Sdwmalone (void)printf("%6lld %3o %3o\n", 8287282Sdwmalone (long long)byte, ch1, ch2); 8346081Simp } else { 841590Srgrimes diffmsg(file1, file2, byte, line); 851590Srgrimes /* NOTREACHED */ 8646081Simp } 8746081Simp } 881590Srgrimes if (ch1 == '\n') 891590Srgrimes ++line; 901590Srgrimes } 911590Srgrimes 921590Srgrimeseof: if (ferror(fp1)) 931590Srgrimes err(ERR_EXIT, "%s", file1); 941590Srgrimes if (ferror(fp2)) 951590Srgrimes err(ERR_EXIT, "%s", file2); 961590Srgrimes if (feof(fp1)) { 971590Srgrimes if (!feof(fp2)) 981590Srgrimes eofmsg(file1); 991590Srgrimes } else 1001590Srgrimes if (feof(fp2)) 1011590Srgrimes eofmsg(file2); 1021590Srgrimes if (dfound) 1031590Srgrimes exit(DIFF_EXIT); 1041590Srgrimes} 105