Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/cat/cat.c	Lines:	79	120	65.8 %
Date:	2016-12-06	Branches:	81	174	46.6 %


/*	$OpenBSD: cat.c,v 1.25 2016/07/01 22:40:44 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 <locale.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;

	setlocale(LC_ALL, "");

	if (pledge("stdio rpath wpath cpath", 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);
			exit(1);
			/* NOTREACHED */
		}
	argv += optind;

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

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 1.25 2016/07/01 22:40:44 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 <locale.h>
44			#include <stdio.h>
45			#include <stdlib.h>
46			#include <string.h>
47			#include <unistd.h>
48
49			#define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b))
50
51			extern char *__progname;
52
53			int bflag, eflag, nflag, sflag, tflag, vflag;
54			int rval;
55			char *filename;
56
57			void cook_args(char *argv[]);
58			void cook_buf(FILE *);
59			void raw_args(char *argv[]);
60			void raw_cat(int);
61
62			int
63			main(int argc, char *argv[])
64		1264	{
65			int ch;
66
67		1264	setlocale(LC_ALL, "");
68
69	✗✓	1264	if (pledge("stdio rpath wpath cpath", NULL) == -1)
70			err(1, "pledge");
71
72	✓✓	1272	while ((ch = getopt(argc, argv, "benstuv")) != -1)
73	✓✓✗✓ ✗✗✗✗	8	switch (ch) {
74			case 'b':
75		2	bflag = nflag = 1; /* -b implies -n */
76		2	break;
77			case 'e':
78		4	eflag = vflag = 1; /* -e implies -v */
79		4	break;
80			case 'n':
81			nflag = 1;
82			break;
83			case 's':
84		2	sflag = 1;
85		2	break;
86			case 't':
87			tflag = vflag = 1; /* -t implies -v */
88			break;
89			case 'u':
90			setvbuf(stdout, NULL, _IONBF, 0);
91			break;
92			case 'v':
93			vflag = 1;
94			break;
95			default:
96			(void)fprintf(stderr,
97			"usage: %s [-benstuv] [file ...]\n", __progname);
98			exit(1);
99			/* NOTREACHED */
100			}
101		1264	argv += optind;
102
103	✓✓✓✓ ✓✗✓✗ ✓✗✗✓	1268	if (bflag \|\| eflag \|\| nflag \|\| sflag \|\| tflag \|\| vflag)
104		4	cook_args(argv);
105			else
106		1260	raw_args(argv);
107	✗✓	1264	if (fclose(stdout))
108			err(1, "stdout");
109		1264	exit(rval);
110			/* NOTREACHED */
111			}
112
113			void
114			cook_args(char **argv)
115		4	{
116			FILE *fp;
117
118		4	fp = stdin;
119		4	filename = "stdin";
120			do {
121	✓✗	4	if (*argv) {
122	✗✓	4	if (!strcmp(*argv, "-"))
123			fp = stdin;
124	✗✓	4	else if ((fp = fopen(*argv, "r")) == NULL) {
125			warn("%s", *argv);
126			rval = 1;
127			++argv;
128			continue;
129			}
130		4	filename = *argv++;
131			}
132		4	cook_buf(fp);
133	✗✓	4	if (fp == stdin)
134			clearerr(fp);
135			else
136		4	(void)fclose(fp);
137	✗✓	4	} while (*argv);
138		4	}
139
140			void
141			cook_buf(FILE *fp)
142		4	{
143			int ch, gobble, line, prev;
144
145		4	line = gobble = 0;
146	✓✗✓✓ ✓✓	124	for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
147	✓✓	120	if (prev == '\n') {
148	✓✓	16	if (sflag) {
149	✓✓	6	if (ch == '\n') {
150	✗✓	4	if (gobble)
151			continue;
152		4	gobble = 1;
153			} else
154		2	gobble = 0;
155			}
156	✓✓	16	if (nflag) {
157	✓✓	10	if (!bflag \|\| ch != '\n') {
158		6	(void)fprintf(stdout, "%6d\t", ++line);
159	✓✗✗✓	6	if (ferror(stdout))
160			break;
161	✓✗	4	} else if (eflag) {
162		4	(void)fprintf(stdout, "%6s\t", "");
163	✓✗✗✓	4	if (ferror(stdout))
164			break;
165			}
166			}
167			}
168	✓✓	120	if (ch == '\n') {
169	✓✗✓✗ ✗✓	16	if (eflag && putchar('$') == EOF)
170			break;
171	✗✓	104	} else if (ch == '\t') {
172			if (tflag) {
173			if (putchar('^') == EOF \|\| putchar('I') == EOF)
174			break;
175			continue;
176			}
177	✓✗	104	} else if (vflag) {
178	✗✓	104	if (!isascii(ch)) {
179			if (putchar('M') == EOF \|\| putchar('-') == EOF)
180			break;
181			ch = toascii(ch);
182			}
183	✗✓	104	if (iscntrl(ch)) {
184			if (putchar('^') == EOF \|\|
185			putchar(ch == '\177' ? '?' :
186			ch \| 0100) == EOF)
187			break;
188			continue;
189			}
190			}
191	✓✗✗✓	120	if (putchar(ch) == EOF)
192			break;
193			}
194	✓✗✗✓	4	if (ferror(fp)) {
195			warn("%s", filename);
196			rval = 1;
197			clearerr(fp);
198			}
199	✓✗✗✓	4	if (ferror(stdout))
200			err(1, "stdout");
201		4	}
202
203			void
204			raw_args(char **argv)
205		1260	{
206			int fd;
207
208	✓✗	1260	fd = fileno(stdin);
209		1260	filename = "stdin";
210			do {
211	✓✓	1790	if (*argv) {
212	✓✓	1153	if (!strcmp(*argv, "-"))
213	✓✗	191	fd = fileno(stdin);
214	✗✓	962	else if ((fd = open(*argv, O_RDONLY, 0)) < 0) {
215			warn("%s", *argv);
216			rval = 1;
217			++argv;
218			continue;
219			}
220		1153	filename = *argv++;
221			}
222		1790	raw_cat(fd);
223	✓✗✓✓	1790	if (fd != fileno(stdin))
224		962	(void)close(fd);
225	✓✓	1790	} while (*argv);
226		1260	}
227
228			void
229			raw_cat(int rfd)
230		1790	{
231			int wfd;
232			ssize_t nr, nw, off;
233			static size_t bsize;
234			static char *buf = NULL;
235			struct stat sbuf;
236
237	✓✗	1790	wfd = fileno(stdout);
238	✓✓	1790	if (buf == NULL) {
239	✗✓	1260	if (fstat(wfd, &sbuf))
240			err(1, "stdout");
241		1260	bsize = MAXIMUM(sbuf.st_blksize, BUFSIZ);
242	✗✓	1260	if ((buf = malloc(bsize)) == NULL)
243			err(1, "malloc");
244			}
245	✓✗✓✓	4258	while ((nr = read(rfd, buf, bsize)) != -1 && nr != 0)
246	✓✓	4936	for (off = 0; nr; nr -= nw, off += nw)
247	✓✗✗✓	2468	if ((nw = write(wfd, buf + off, (size_t)nr)) == 0 \|\|
248			nw == -1)
249			err(1, "stdout");
250	✗✓	1790	if (nr < 0) {
251			warn("%s", filename);
252			rval = 1;
253			}
254		1790	}