Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cmp/special.c	Lines:	18	31	58.1 %
Date:	2017-11-13	Branches:	25	68	36.8 %


/*      $OpenBSD: special.c,v 1.7 2011/01/19 13:01:25 okan Exp $      */
/*      $NetBSD: special.c,v 1.2 1995/09/08 03:23:00 tls Exp $      */

/*-
 * Copyright (c) 1991, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>

#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "extern.h"

void
c_special(int fd1, char *file1, off_t skip1, int fd2, char *file2, off_t skip2)
{
	int ch1, ch2;
	off_t byte, line;
	FILE *fp1, *fp2;
	int dfound;

	if ((fp1 = fdopen(fd1, "r")) == NULL)
		err(ERR_EXIT, "%s", file1);
	if ((fp2 = fdopen(fd2, "r")) == NULL)
		err(ERR_EXIT, "%s", file2);

	dfound = 0;
	while (skip1--)
		if (getc(fp1) == EOF)
			goto eof;
	while (skip2--)
		if (getc(fp2) == EOF)
			goto eof;

	for (byte = line = 1;; ++byte) {
		ch1 = getc(fp1);
		ch2 = getc(fp2);
		if (ch1 == EOF || ch2 == EOF)
			break;
		if (ch1 != ch2) {
			if (lflag) {
				dfound = 1;
				(void)printf("%6lld %3o %3o\n", (long long)byte,
				    ch1, ch2);
			} else
				diffmsg(file1, file2, byte, line);
				/* NOTREACHED */
		}
		if (ch1 == '\n')
			++line;
	}

eof:	if (ferror(fp1))
		err(ERR_EXIT, "%s", file1);
	if (ferror(fp2))
		err(ERR_EXIT, "%s", file2);
	if (feof(fp1)) {
		if (!feof(fp2))
			eofmsg(file1);
	} else
		if (feof(fp2))
			eofmsg(file2);
	if (dfound)
		exit(DIFF_EXIT);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: special.c,v 1.7 2011/01/19 13:01:25 okan Exp $ */
2			/* $NetBSD: special.c,v 1.2 1995/09/08 03:23:00 tls Exp $ */
3
4			/*-
5			* Copyright (c) 1991, 1993, 1994
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/types.h>
34
35			#include <err.h>
36			#include <stdlib.h>
37			#include <stdio.h>
38			#include <string.h>
39
40			#include "extern.h"
41
42			void
43			c_special(int fd1, char file1, off_t skip1, int fd2, char file2, off_t skip2)
44			{
45			int ch1, ch2;
46			off_t byte, line;
47			FILE fp1, fp2;
48			int dfound;
49
50	✗✓	314	if ((fp1 = fdopen(fd1, "r")) == NULL)
51			err(ERR_EXIT, "%s", file1);
52	✗✓	157	if ((fp2 = fdopen(fd2, "r")) == NULL)
53			err(ERR_EXIT, "%s", file2);
54
55			dfound = 0;
56	✗✓	314	while (skip1--)
57			if (getc(fp1) == EOF)
58			goto eof;
59	✗✓	314	while (skip2--)
60			if (getc(fp2) == EOF)
61			goto eof;
62
63		68034	for (byte = line = 1;; ++byte) {
64	✓✗✓✓	272136	ch1 = getc(fp1);
65	✓✗✓✓	272136	ch2 = getc(fp2);
66	✓✓	68034	if (ch1 == EOF \|\| ch2 == EOF)
67			break;
68	✗✓	67877	if (ch1 != ch2) {
69			if (lflag) {
70			dfound = 1;
71			(void)printf("%6lld %3o %3o\n", (long long)byte,
72			ch1, ch2);
73			} else
74			diffmsg(file1, file2, byte, line);
75			/* NOTREACHED */
76			}
77	✓✓	67877	if (ch1 == '\n')
78		836	++line;
79			}
80
81	✓✗✗✓ ✗✗	314	eof: if (ferror(fp1))
82			err(ERR_EXIT, "%s", file1);
83	✓✗✗✓ ✗✗	314	if (ferror(fp2))
84			err(ERR_EXIT, "%s", file2);
85	✓✗✓✗ ✗✗	314	if (feof(fp1)) {
86	✓✗✓✓ ✗✗	314	if (!feof(fp2))
87		1	eofmsg(file1);
88			} else
89			if (feof(fp2))
90			eofmsg(file2);
91	✗✓	156	if (dfound)
92			exit(DIFF_EXIT);
93		156	}