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 * 3. All advertising materials mentioning features or use of this software 149b50d902SRodney W. Grimes * must display the following acknowledgement: 159b50d902SRodney W. Grimes * This product includes software developed by the University of 169b50d902SRodney W. Grimes * California, Berkeley and its contributors. 179b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 189b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 199b50d902SRodney W. Grimes * without specific prior written permission. 209b50d902SRodney W. Grimes * 219b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 229b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 239b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 249b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 259b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 269b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 279b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 289b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 299b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 309b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 319b50d902SRodney W. Grimes * SUCH DAMAGE. 329b50d902SRodney W. Grimes */ 339b50d902SRodney W. Grimes 346af414cbSMark Murray #include <sys/cdefs.h> 356af414cbSMark Murray 366af414cbSMark Murray __FBSDID("$FreeBSD$"); 376af414cbSMark Murray 389b50d902SRodney W. Grimes #ifndef lint 39fa146c53SArchie Cobbs static const char sccsid[] = "@(#)special.c 8.3 (Berkeley) 4/2/94"; 406af414cbSMark Murray #endif 419b50d902SRodney W. Grimes 429b50d902SRodney W. Grimes #include <sys/types.h> 439b50d902SRodney W. Grimes 449b50d902SRodney W. Grimes #include <err.h> 459b50d902SRodney W. Grimes #include <stdlib.h> 469b50d902SRodney W. Grimes #include <stdio.h> 479b50d902SRodney W. Grimes #include <string.h> 489b50d902SRodney W. Grimes 499b50d902SRodney W. Grimes #include "extern.h" 509b50d902SRodney W. Grimes 519b50d902SRodney W. Grimes void 529b50d902SRodney W. Grimes c_special(fd1, file1, skip1, fd2, file2, skip2) 539b50d902SRodney W. Grimes int fd1, fd2; 54c5250ed1SDavid Malone const char *file1, *file2; 559b50d902SRodney W. Grimes off_t skip1, skip2; 569b50d902SRodney W. Grimes { 579b50d902SRodney W. Grimes int ch1, ch2; 589b50d902SRodney W. Grimes off_t byte, line; 599b50d902SRodney W. Grimes FILE *fp1, *fp2; 609b50d902SRodney W. Grimes int dfound; 619b50d902SRodney W. Grimes 629b50d902SRodney W. Grimes if ((fp1 = fdopen(fd1, "r")) == NULL) 639b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file1); 649b50d902SRodney W. Grimes if ((fp2 = fdopen(fd2, "r")) == NULL) 659b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file2); 669b50d902SRodney W. Grimes 67c28065c6SJoerg Wunsch dfound = 0; 689b50d902SRodney W. Grimes while (skip1--) 699b50d902SRodney W. Grimes if (getc(fp1) == EOF) 709b50d902SRodney W. Grimes goto eof; 719b50d902SRodney W. Grimes while (skip2--) 729b50d902SRodney W. Grimes if (getc(fp2) == EOF) 739b50d902SRodney W. Grimes goto eof; 749b50d902SRodney W. Grimes 759b50d902SRodney W. Grimes for (byte = line = 1;; ++byte) { 769b50d902SRodney W. Grimes ch1 = getc(fp1); 779b50d902SRodney W. Grimes ch2 = getc(fp2); 789b50d902SRodney W. Grimes if (ch1 == EOF || ch2 == EOF) 799b50d902SRodney W. Grimes break; 8096846ff6SWarner Losh if (ch1 != ch2) { 819b50d902SRodney W. Grimes if (lflag) { 829b50d902SRodney W. Grimes dfound = 1; 835748d9baSDavid Malone (void)printf("%6lld %3o %3o\n", 845748d9baSDavid Malone (long long)byte, ch1, ch2); 8596846ff6SWarner Losh } else { 869b50d902SRodney W. Grimes diffmsg(file1, file2, byte, line); 879b50d902SRodney W. Grimes /* NOTREACHED */ 8896846ff6SWarner Losh } 8996846ff6SWarner Losh } 909b50d902SRodney W. Grimes if (ch1 == '\n') 919b50d902SRodney W. Grimes ++line; 929b50d902SRodney W. Grimes } 939b50d902SRodney W. Grimes 949b50d902SRodney W. Grimes eof: if (ferror(fp1)) 959b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file1); 969b50d902SRodney W. Grimes if (ferror(fp2)) 979b50d902SRodney W. Grimes err(ERR_EXIT, "%s", file2); 989b50d902SRodney W. Grimes if (feof(fp1)) { 999b50d902SRodney W. Grimes if (!feof(fp2)) 1009b50d902SRodney W. Grimes eofmsg(file1); 1019b50d902SRodney W. Grimes } else 1029b50d902SRodney W. Grimes if (feof(fp2)) 1039b50d902SRodney W. Grimes eofmsg(file2); 1049b50d902SRodney W. Grimes if (dfound) 1059b50d902SRodney W. Grimes exit(DIFF_EXIT); 1069b50d902SRodney W. Grimes } 107