GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/cmp/special.c Lines: 21 37 56.8 %
Date: 2016-12-06 Branches: 24 58 41.4 %

Line Branch Exec Source
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/*      $OpenBSD: special.c,v 1.7 2011/01/19 13:01:25 okan Exp $      */
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/*      $NetBSD: special.c,v 1.2 1995/09/08 03:23:00 tls Exp $      */
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/*-
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 * Copyright (c) 1991, 1993, 1994
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <err.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "extern.h"
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void
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c_special(int fd1, char *file1, off_t skip1, int fd2, char *file2, off_t skip2)
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{
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	int ch1, ch2;
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	off_t byte, line;
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	FILE *fp1, *fp2;
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	int dfound;
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	if ((fp1 = fdopen(fd1, "r")) == NULL)
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		err(ERR_EXIT, "%s", file1);
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	if ((fp2 = fdopen(fd2, "r")) == NULL)
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		err(ERR_EXIT, "%s", file2);
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	dfound = 0;
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	while (skip1--)
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		if (getc(fp1) == EOF)
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			goto eof;
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	while (skip2--)
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		if (getc(fp2) == EOF)
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			goto eof;
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11611
	for (byte = line = 1;; ++byte) {
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11611
		ch1 = getc(fp1);
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11611
		ch2 = getc(fp2);
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11611
		if (ch1 == EOF || ch2 == EOF)
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			break;
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11586
		if (ch1 != ch2) {
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			if (lflag) {
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				dfound = 1;
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				(void)printf("%6lld %3o %3o\n", (long long)byte,
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				    ch1, ch2);
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			} else
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				diffmsg(file1, file2, byte, line);
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				/* NOTREACHED */
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		}
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11586
		if (ch1 == '\n')
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			++line;
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11586
	}
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eof:	if (ferror(fp1))
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		err(ERR_EXIT, "%s", file1);
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	if (ferror(fp2))
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		err(ERR_EXIT, "%s", file2);
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	if (feof(fp1)) {
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		if (!feof(fp2))
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			eofmsg(file1);
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	} else
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		if (feof(fp2))
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			eofmsg(file2);
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	if (dfound)
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		exit(DIFF_EXIT);
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}