Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/comm/comm.c	Lines:	0	68	0.0 %
Date:	2016-12-06	Branches:	0	61	0.0 %


/*	$OpenBSD: comm.c,v 1.10 2015/10/09 01:37:07 deraadt Exp $	*/
/*	$NetBSD: comm.c,v 1.10 1995/09/05 19:57:43 jtc Exp $	*/

/*
 * Copyright (c) 1989, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Case Larsen.
 *
 * 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 <err.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define	MAXLINELEN	(LINE_MAX + 1)

char *tabs[] = { "", "\t", "\t\t" };

FILE   *file(const char *);
void	show(FILE *, char *, char *);
void	usage(void);

int
main(int argc, char *argv[])
{
	int comp, file1done, file2done, read1, read2;
	int ch, flag1, flag2, flag3;
	FILE *fp1, *fp2;
	char *col1, *col2, *col3;
	char **p, line1[MAXLINELEN], line2[MAXLINELEN];
	int (*compare)(const char * ,const char *);

	setlocale(LC_ALL, "");

	if (pledge("stdio rpath wpath cpath", NULL) == -1)
		err(1, "pledge");

	flag1 = flag2 = flag3 = 1;
	compare = strcoll;
	while ((ch = getopt(argc, argv, "123f")) != -1)
		switch(ch) {
		case '1':
			flag1 = 0;
			break;
		case '2':
			flag2 = 0;
			break;
		case '3':
			flag3 = 0;
			break;
		case 'f':
			compare = strcasecmp;
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc != 2)
		usage();

	fp1 = file(argv[0]);
	fp2 = file(argv[1]);

	/* for each column printed, add another tab offset */
	p = tabs;
	col1 = col2 = col3 = NULL;
	if (flag1)
		col1 = *p++;
	if (flag2)
		col2 = *p++;
	if (flag3)
		col3 = *p;

	for (read1 = read2 = 1;;) {
		/* read next line, check for EOF */
		if (read1)
			file1done = !fgets(line1, MAXLINELEN, fp1);
		if (read2)
			file2done = !fgets(line2, MAXLINELEN, fp2);

		/* if one file done, display the rest of the other file */
		if (file1done) {
			if (!file2done && col2)
				show(fp2, col2, line2);
			break;
		}
		if (file2done) {
			if (!file1done && col1)
				show(fp1, col1, line1);
			break;
		}

		/* lines are the same */
		if (!(comp = compare(line1, line2))) {
			read1 = read2 = 1;
			if (col3)
				if (printf("%s%s", col3, line1) < 0)
					break;
			continue;
		}

		/* lines are different */
		if (comp < 0) {
			read1 = 1;
			read2 = 0;
			if (col1)
				if (printf("%s%s", col1, line1) < 0)
					break;
		} else {
			read1 = 0;
			read2 = 1;
			if (col2)
				if (printf("%s%s", col2, line2) < 0)
					break;
		}
	}

	if (ferror (stdout) || fclose (stdout) == EOF)
		err(1, "stdout");

	exit(0);
}

void
show(FILE *fp, char *offset, char *buf)
{
	while (printf("%s%s", offset, buf) >= 0 && fgets(buf, MAXLINELEN, fp))
		;
}

FILE *
file(const char *name)
{
	FILE *fp;

	if (!strcmp(name, "-"))
		return (stdin);
	if ((fp = fopen(name, "r")) == NULL)
		err(1, "%s", name);
	return (fp);
}

void
usage(void)
{
	(void)fprintf(stderr, "usage: comm [-123f] file1 file2\n");
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: comm.c,v 1.10 2015/10/09 01:37:07 deraadt Exp $ */
2			/* $NetBSD: comm.c,v 1.10 1995/09/05 19:57:43 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1989, 1993, 1994
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Case Larsen.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include <err.h>
37			#include <limits.h>
38			#include <locale.h>
39			#include <stdio.h>
40			#include <stdlib.h>
41			#include <string.h>
42			#include <unistd.h>
43
44			#define MAXLINELEN (LINE_MAX + 1)
45
46			char *tabs[] = { "", "\t", "\t\t" };
47
48			FILE file(const char );
49			void show(FILE , char , char *);
50			void usage(void);
51
52			int
53			main(int argc, char *argv[])
54			{
55			int comp, file1done, file2done, read1, read2;
56			int ch, flag1, flag2, flag3;
57			FILE fp1, fp2;
58			char col1, col2, *col3;
59			char **p, line1[MAXLINELEN], line2[MAXLINELEN];
60			int (compare)(const char ,const char *);
61
62			setlocale(LC_ALL, "");
63
64			if (pledge("stdio rpath wpath cpath", NULL) == -1)
65			err(1, "pledge");
66
67			flag1 = flag2 = flag3 = 1;
68			compare = strcoll;
69			while ((ch = getopt(argc, argv, "123f")) != -1)
70			switch(ch) {
71			case '1':
72			flag1 = 0;
73			break;
74			case '2':
75			flag2 = 0;
76			break;
77			case '3':
78			flag3 = 0;
79			break;
80			case 'f':
81			compare = strcasecmp;
82			break;
83			case '?':
84			default:
85			usage();
86			}
87			argc -= optind;
88			argv += optind;
89
90			if (argc != 2)
91			usage();
92
93			fp1 = file(argv[0]);
94			fp2 = file(argv[1]);
95
96			/* for each column printed, add another tab offset */
97			p = tabs;
98			col1 = col2 = col3 = NULL;
99			if (flag1)
100			col1 = *p++;
101			if (flag2)
102			col2 = *p++;
103			if (flag3)
104			col3 = *p;
105
106			for (read1 = read2 = 1;;) {
107			/* read next line, check for EOF */
108			if (read1)
109			file1done = !fgets(line1, MAXLINELEN, fp1);
110			if (read2)
111			file2done = !fgets(line2, MAXLINELEN, fp2);
112
113			/* if one file done, display the rest of the other file */
114			if (file1done) {
115			if (!file2done && col2)
116			show(fp2, col2, line2);
117			break;
118			}
119			if (file2done) {
120			if (!file1done && col1)
121			show(fp1, col1, line1);
122			break;
123			}
124
125			/* lines are the same */
126			if (!(comp = compare(line1, line2))) {
127			read1 = read2 = 1;
128			if (col3)
129			if (printf("%s%s", col3, line1) < 0)
130			break;
131			continue;
132			}
133
134			/* lines are different */
135			if (comp < 0) {
136			read1 = 1;
137			read2 = 0;
138			if (col1)
139			if (printf("%s%s", col1, line1) < 0)
140			break;
141			} else {
142			read1 = 0;
143			read2 = 1;
144			if (col2)
145			if (printf("%s%s", col2, line2) < 0)
146			break;
147			}
148			}
149
150			if (ferror (stdout) \|\| fclose (stdout) == EOF)
151			err(1, "stdout");
152
153			exit(0);
154			}
155
156			void
157			show(FILE fp, char offset, char *buf)
158			{
159			while (printf("%s%s", offset, buf) >= 0 && fgets(buf, MAXLINELEN, fp))
160			;
161			}
162
163			FILE *
164			file(const char *name)
165			{
166			FILE *fp;
167
168			if (!strcmp(name, "-"))
169			return (stdin);
170			if ((fp = fopen(name, "r")) == NULL)
171			err(1, "%s", name);
172			return (fp);
173			}
174
175			void
176			usage(void)
177			{
178			(void)fprintf(stderr, "usage: comm [-123f] file1 file2\n");
179			exit(1);
180			}