Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/cat/cat.c	Lines:	76	116	65.5 %
Date:	2017-11-13	Branches:	71	152	46.7 %


/*	$OpenBSD: cat.c,v 1.26 2016/10/19 18:20:25 schwarze Exp $	*/
/*	$NetBSD: cat.c,v 1.11 1995/09/07 06:12:54 jtc Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kevin Fall.
 *
 * 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 <sys/stat.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))

extern char *__progname;

int bflag, eflag, nflag, sflag, tflag, vflag;
int rval;
char *filename;

void cook_args(char *argv[]);
void cook_buf(FILE *);
void raw_args(char *argv[]);
void raw_cat(int);

int
main(int argc, char *argv[])
{
	int ch;

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

	while ((ch = getopt(argc, argv, "benstuv")) != -1)
		switch (ch) {
		case 'b':
			bflag = nflag = 1;	/* -b implies -n */
			break;
		case 'e':
			eflag = vflag = 1;	/* -e implies -v */
			break;
		case 'n':
			nflag = 1;
			break;
		case 's':
			sflag = 1;
			break;
		case 't':
			tflag = vflag = 1;	/* -t implies -v */
			break;
		case 'u':
			setvbuf(stdout, NULL, _IONBF, 0);
			break;
		case 'v':
			vflag = 1;
			break;
		default:
			(void)fprintf(stderr,
			    "usage: %s [-benstuv] [file ...]\n", __progname);
			return 1;
		}
	argv += optind;

	if (bflag || eflag || nflag || sflag || tflag || vflag)
		cook_args(argv);
	else
		raw_args(argv);
	if (fclose(stdout))
		err(1, "stdout");
	return rval;
}

void
cook_args(char **argv)
{
	FILE *fp;

	fp = stdin;
	filename = "stdin";
	do {
		if (*argv) {
			if (!strcmp(*argv, "-"))
				fp = stdin;
			else if ((fp = fopen(*argv, "r")) == NULL) {
				warn("%s", *argv);
				rval = 1;
				++argv;
				continue;
			}
			filename = *argv++;
		}
		cook_buf(fp);
		if (fp == stdin)
			clearerr(fp);
		else
			(void)fclose(fp);
	} while (*argv);
}

void
cook_buf(FILE *fp)
{
	int ch, gobble, line, prev;

	line = gobble = 0;
	for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
		if (prev == '\n') {
			if (sflag) {
				if (ch == '\n') {
					if (gobble)
						continue;
					gobble = 1;
				} else
					gobble = 0;
			}
			if (nflag) {
				if (!bflag || ch != '\n') {
					(void)fprintf(stdout, "%6d\t", ++line);
					if (ferror(stdout))
						break;
				} else if (eflag) {
					(void)fprintf(stdout, "%6s\t", "");
					if (ferror(stdout))
						break;
				}
			}
		}
		if (ch == '\n') {
			if (eflag && putchar('$') == EOF)
				break;
		} else if (ch == '\t') {
			if (tflag) {
				if (putchar('^') == EOF || putchar('I') == EOF)
					break;
				continue;
			}
		} else if (vflag) {
			if (!isascii(ch)) {
				if (putchar('M') == EOF || putchar('-') == EOF)
					break;
				ch = toascii(ch);
			}
			if (iscntrl(ch)) {
				if (putchar('^') == EOF ||
				    putchar(ch == '\177' ? '?' :
				    ch | 0100) == EOF)
					break;
				continue;
			}
		}
		if (putchar(ch) == EOF)
			break;
	}
	if (ferror(fp)) {
		warn("%s", filename);
		rval = 1;
		clearerr(fp);
	}
	if (ferror(stdout))
		err(1, "stdout");
}

void
raw_args(char **argv)
{
	int fd;

	fd = fileno(stdin);
	filename = "stdin";
	do {
		if (*argv) {
			if (!strcmp(*argv, "-"))
				fd = fileno(stdin);
			else if ((fd = open(*argv, O_RDONLY, 0)) < 0) {
				warn("%s", *argv);
				rval = 1;
				++argv;
				continue;
			}
			filename = *argv++;
		}
		raw_cat(fd);
		if (fd != fileno(stdin))
			(void)close(fd);
	} while (*argv);
}

void
raw_cat(int rfd)
{
	int wfd;
	ssize_t nr, nw, off;
	static size_t bsize;
	static char *buf = NULL;
	struct stat sbuf;

	wfd = fileno(stdout);
	if (buf == NULL) {
		if (fstat(wfd, &sbuf))
			err(1, "stdout");
		bsize = MAXIMUM(sbuf.st_blksize, BUFSIZ);
		if ((buf = malloc(bsize)) == NULL)
			err(1, "malloc");
	}
	while ((nr = read(rfd, buf, bsize)) != -1 && nr != 0)
		for (off = 0; nr; nr -= nw, off += nw)
			if ((nw = write(wfd, buf + off, (size_t)nr)) == 0 ||
			     nw == -1)
				err(1, "stdout");
	if (nr < 0) {
		warn("%s", filename);
		rval = 1;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: cat.c,v 1.26 2016/10/19 18:20:25 schwarze Exp $ */
2			/* $NetBSD: cat.c,v 1.11 1995/09/07 06:12:54 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1989, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Kevin Fall.
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 <sys/types.h>
37			#include <sys/stat.h>
38
39			#include <ctype.h>
40			#include <err.h>
41			#include <errno.h>
42			#include <fcntl.h>
43			#include <stdio.h>
44			#include <stdlib.h>
45			#include <string.h>
46			#include <unistd.h>
47
48			#define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b))
49
50			extern char *__progname;
51
52			int bflag, eflag, nflag, sflag, tflag, vflag;
53			int rval;
54			char *filename;
55
56			void cook_args(char *argv[]);
57			void cook_buf(FILE *);
58			void raw_args(char *argv[]);
59			void raw_cat(int);
60
61			int
62			main(int argc, char *argv[])
63			{
64			int ch;
65
66	✗✓	2148	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
67			err(1, "pledge");
68
69	✓✓	2212	while ((ch = getopt(argc, argv, "benstuv")) != -1)
70	✓✓✗✓ ✗✗✗✗	32	switch (ch) {
71			case 'b':
72		8	bflag = nflag = 1; /* -b implies -n */
73		8	break;
74			case 'e':
75		16	eflag = vflag = 1; /* -e implies -v */
76		16	break;
77			case 'n':
78			nflag = 1;
79			break;
80			case 's':
81		8	sflag = 1;
82		8	break;
83			case 't':
84			tflag = vflag = 1; /* -t implies -v */
85			break;
86			case 'u':
87			setvbuf(stdout, NULL, _IONBF, 0);
88			break;
89			case 'v':
90			vflag = 1;
91			break;
92			default:
93			(void)fprintf(stderr,
94			"usage: %s [-benstuv] [file ...]\n", __progname);
95			return 1;
96			}
97		1074	argv += optind;
98
99	✓✓	1074	if (bflag \|\| eflag \|\| nflag \|\| sflag \|\| tflag \|\| vflag)
100		16	cook_args(argv);
101			else
102		1058	raw_args(argv);
103	✗✓	1074	if (fclose(stdout))
104			err(1, "stdout");
105		1074	return rval;
106		1074	}
107
108			void
109			cook_args(char **argv)
110			{
111			FILE *fp;
112
113			fp = stdin;
114		32	filename = "stdin";
115		16	do {
116	✓✗	16	if (*argv) {
117	✗✓	16	if (!strcmp(*argv, "-"))
118			fp = stdin;
119	✗✓	16	else if ((fp = fopen(*argv, "r")) == NULL) {
120			warn("%s", *argv);
121			rval = 1;
122			++argv;
123			continue;
124			}
125		16	filename = *argv++;
126		16	}
127		16	cook_buf(fp);
128	✗✓	16	if (fp == stdin)
129			clearerr(fp);
130			else
131		16	(void)fclose(fp);
132	✗✓	16	} while (*argv);
133		16	}
134
135			void
136			cook_buf(FILE *fp)
137			{
138			int ch, gobble, line, prev;
139
140			line = gobble = 0;
141	✓✗✓✓ ✓✓	2496	for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
142	✓✓	480	if (prev == '\n') {
143	✓✓	64	if (sflag) {
144	✓✓	24	if (ch == '\n') {
145	✓✗	16	if (gobble)
146			continue;
147			gobble = 1;
148		16	} else
149			gobble = 0;
150			}
151	✓✓	64	if (nflag) {
152	✓✓	40	if (!bflag \|\| ch != '\n') {
153		24	(void)fprintf(stdout, "%6d\t", ++line);
154	✓✗✓✗ ✗✗	48	if (ferror(stdout))
155			break;
156	✓✗	16	} else if (eflag) {
157		16	(void)fprintf(stdout, "%6s\t", "");
158	✓✗✓✗ ✗✗	32	if (ferror(stdout))
159			break;
160			}
161			}
162			}
163	✓✓	480	if (ch == '\n') {
164	✓✗✓✗ ✓✗	256	if (eflag && putchar('$') == EOF)
165			break;
166	✗✓	416	} else if (ch == '\t') {
167			if (tflag) {
168			if (putchar('^') == EOF \|\| putchar('I') == EOF)
169			break;
170			continue;
171			}
172	✓✗	416	} else if (vflag) {
173	✗✓	416	if (!isascii(ch)) {
174			if (putchar('M') == EOF \|\| putchar('-') == EOF)
175			break;
176			ch = toascii(ch);
177			}
178	✗✓	416	if (iscntrl(ch)) {
179			if (putchar('^') == EOF \|\|
180			putchar(ch == '\177' ? '?' :
181			ch \| 0100) == EOF)
182			break;
183			continue;
184			}
185			}
186	✓✗✓✗	1440	if (putchar(ch) == EOF)
187			break;
188			}
189	✓✗✗✓ ✗✗	32	if (ferror(fp)) {
190			warn("%s", filename);
191			rval = 1;
192			clearerr(fp);
193			}
194	✓✗✗✓ ✗✗	32	if (ferror(stdout))
195			err(1, "stdout");
196		16	}
197
198			void
199			raw_args(char **argv)
200			{
201			int fd;
202
203	✓✗	4232	fd = fileno(stdin);
204		1058	filename = "stdin";
205		1058	do {
206	✓✓	2196	if (*argv) {
207	✗✓	1583	if (!strcmp(*argv, "-"))
208			fd = fileno(stdin);
209	✗✓	1583	else if ((fd = open(*argv, O_RDONLY, 0)) < 0) {
210			warn("%s", *argv);
211			rval = 1;
212			++argv;
213			continue;
214			}
215		1583	filename = *argv++;
216		1583	}
217		2196	raw_cat(fd);
218	✓✗✓✓	6588	if (fd != fileno(stdin))
219		1583	(void)close(fd);
220	✓✓	2196	} while (*argv);
221		1058	}
222
223			void
224			raw_cat(int rfd)
225			{
226			int wfd;
227			ssize_t nr, nw, off;
228			static size_t bsize;
229			static char *buf = NULL;
230		4392	struct stat sbuf;
231
232	✓✗	6588	wfd = fileno(stdout);
233	✓✓	2196	if (buf == NULL) {
234	✗✓	1058	if (fstat(wfd, &sbuf))
235			err(1, "stdout");
236		1058	bsize = MAXIMUM(sbuf.st_blksize, BUFSIZ);
237	✗✓	1058	if ((buf = malloc(bsize)) == NULL)
238			err(1, "malloc");
239			}
240	✓✓	13588	while ((nr = read(rfd, buf, bsize)) != -1 && nr != 0)
241	✓✓	18392	for (off = 0; nr; nr -= nw, off += nw)
242	✗✓	9196	if ((nw = write(wfd, buf + off, (size_t)nr)) == 0 \|\|
243		4598	nw == -1)
244			err(1, "stdout");
245	✗✓	2196	if (nr < 0) {
246			warn("%s", filename);
247			rval = 1;
248			}
249		2196	}