19b50d902SRodney W. Grimes /*- 29b50d902SRodney W. Grimes * Copyright (c) 1991, 1993, 1994 39b50d902SRodney W. Grimes * The Regents of the University of California. All rights reserved. 49b50d902SRodney W. Grimes * 59b50d902SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 69b50d902SRodney W. Grimes * modification, are permitted provided that the following conditions 79b50d902SRodney W. Grimes * are met: 89b50d902SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 99b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 109b50d902SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 119b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 129b50d902SRodney W. Grimes * documentation and/or other materials provided with the distribution. 139b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 149b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 159b50d902SRodney W. Grimes * without specific prior written permission. 169b50d902SRodney W. Grimes * 179b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 189b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 199b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 209b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 219b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 229b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 239b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 249b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 259b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 269b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 279b50d902SRodney W. Grimes * SUCH DAMAGE. 289b50d902SRodney W. Grimes */ 299b50d902SRodney W. Grimes 309f5b04e9SDavid Malone #if 0 319b50d902SRodney W. Grimes #ifndef lint 329f5b04e9SDavid Malone static char sccsid[] = "@(#)special.c 8.3 (Berkeley) 4/2/94"; 336af414cbSMark Murray #endif 349f5b04e9SDavid Malone #endif 359f5b04e9SDavid Malone 369f5b04e9SDavid Malone #include <sys/cdefs.h> 379f5b04e9SDavid Malone __FBSDID("$FreeBSD$"); 389b50d902SRodney W. Grimes 399b50d902SRodney W. Grimes #include <sys/types.h> 409b50d902SRodney W. Grimes 419b50d902SRodney W. Grimes #include <err.h> 429b50d902SRodney W. Grimes #include <stdlib.h> 439b50d902SRodney W. Grimes #include <stdio.h> 449b50d902SRodney W. Grimes 459b50d902SRodney W. Grimes #include "extern.h" 469b50d902SRodney W. Grimes 479b50d902SRodney W. Grimes void 48f2e8e0daSDavid Malone c_special(int fd1, const char *file1, off_t skip1, 49f2e8e0daSDavid Malone int fd2, const char *file2, off_t skip2) 509b50d902SRodney W. Grimes { 519b50d902SRodney W. Grimes int ch1, ch2; 529b50d902SRodney W. Grimes off_t byte, line; 539b50d902SRodney W. Grimes FILE *fp1, *fp2; 549b50d902SRodney W. Grimes int dfound; 559b50d902SRodney W. Grimes 569b50d902SRodney W. Grimes if ((fp1 = fdopen(fd1, "r")) == NULL) 579b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file1); 589b50d902SRodney W. Grimes if ((fp2 = fdopen(fd2, "r")) == NULL) 599b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file2); 609b50d902SRodney W. Grimes 61c28065c6SJoerg Wunsch dfound = 0; 629b50d902SRodney W. Grimes while (skip1--) 639b50d902SRodney W. Grimes if (getc(fp1) == EOF) 649b50d902SRodney W. Grimes goto eof; 659b50d902SRodney W. Grimes while (skip2--) 669b50d902SRodney W. Grimes if (getc(fp2) == EOF) 679b50d902SRodney W. Grimes goto eof; 689b50d902SRodney W. Grimes 699b50d902SRodney W. Grimes for (byte = line = 1;; ++byte) { 709b50d902SRodney W. Grimes ch1 = getc(fp1); 719b50d902SRodney W. Grimes ch2 = getc(fp2); 729b50d902SRodney W. Grimes if (ch1 == EOF || ch2 == EOF) 739b50d902SRodney W. Grimes break; 7496846ff6SWarner Losh if (ch1 != ch2) { 751b8d837cSMurray Stokely if (xflag) { 761b8d837cSMurray Stokely dfound = 1; 771b8d837cSMurray Stokely (void)printf("%08llx %02x %02x\n", 781b8d837cSMurray Stokely (long long)byte - 1, ch1, ch2); 791b8d837cSMurray Stokely } else if (lflag) { 809b50d902SRodney W. Grimes dfound = 1; 815748d9baSDavid Malone (void)printf("%6lld %3o %3o\n", 825748d9baSDavid Malone (long long)byte, ch1, ch2); 8396846ff6SWarner Losh } else { 849b50d902SRodney W. Grimes diffmsg(file1, file2, byte, line); 859b50d902SRodney W. Grimes /* NOTREACHED */ 8696846ff6SWarner Losh } 8796846ff6SWarner Losh } 889b50d902SRodney W. Grimes if (ch1 == '\n') 899b50d902SRodney W. Grimes ++line; 909b50d902SRodney W. Grimes } 919b50d902SRodney W. Grimes 929b50d902SRodney W. Grimes eof: if (ferror(fp1)) 939b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file1); 949b50d902SRodney W. Grimes if (ferror(fp2)) 959b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file2); 969b50d902SRodney W. Grimes if (feof(fp1)) { 979b50d902SRodney W. Grimes if (!feof(fp2)) 989b50d902SRodney W. Grimes eofmsg(file1); 999b50d902SRodney W. Grimes } else 1009b50d902SRodney W. Grimes if (feof(fp2)) 1019b50d902SRodney W. Grimes eofmsg(file2); 102*4e354796SAlan Somers fclose(fp2); 103*4e354796SAlan Somers fclose(fp1); 1049b50d902SRodney W. Grimes if (dfound) 1059b50d902SRodney W. Grimes exit(DIFF_EXIT); 1069b50d902SRodney W. Grimes } 107