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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/split/split.c	Lines:	0	139	0.0 %
Date:	2016-12-06	Branches:	0	130	0.0 %


/*	$OpenBSD: split.c,v 1.21 2015/12/31 16:13:01 millert Exp $	*/
/*	$NetBSD: split.c,v 1.5 1995/08/31 22:22:05 jtc Exp $	*/

/*
 * Copyright (c) 1987, 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/param.h>	/* MAXBSIZE */
#include <sys/types.h>

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

#define DEFLINE	1000			/* Default num lines per file. */

ssize_t	 bytecnt;			/* Byte count to split on. */
long	 numlines;			/* Line count to split on. */
int	 file_open;			/* If a file open. */
int	 ifd = -1, ofd = -1;		/* Input/output file descriptors. */
char	 bfr[MAXBSIZE];			/* I/O buffer. */
char	 fname[PATH_MAX];		/* File name prefix. */
regex_t	 rgx;
int	 pflag;
int	 sufflen = 2;			/* File name suffix length. */

void newfile(void);
void split1(void);
void split2(void);
__dead void usage(void);

int
main(int argc, char *argv[])
{
	int ch, scale;
	char *ep, *p;
	const char *errstr;

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

	while ((ch = getopt(argc, argv, "0123456789a:b:l:p:-")) != -1)
		switch (ch) {
		case '0': case '1': case '2': case '3': case '4':
		case '5': case '6': case '7': case '8': case '9':
			/*
			 * Undocumented kludge: split was originally designed
			 * to take a number after a dash.
			 */
			if (numlines == 0) {
				p = argv[optind - 1];
				if (p[0] == '-' && p[1] == ch && !p[2])
					numlines = strtol(++p, &ep, 10);
				else
					numlines =
					    strtol(argv[optind] + 1, &ep, 10);
				if (numlines <= 0 || *ep)
					errx(1, "%s: illegal line count",
					    optarg);
			}
			break;
		case '-':		/* Undocumented: historic stdin flag. */
			if (ifd != -1)
				usage();
			ifd = 0;
			break;
		case 'a':		/* suffix length. */
			sufflen = strtonum(optarg, 1, NAME_MAX, &errstr);
			if (errstr)
				errx(1, "%s: %s", optarg, errstr);
			break;
		case 'b':		/* Byte count. */
			if ((bytecnt = strtol(optarg, &ep, 10)) <= 0 ||
			    (*ep != '\0' && *ep != 'k' && *ep != 'm'))
				errx(1, "%s: illegal byte count", optarg);
			if (*ep == 'k')
				scale = 1024;
			else if (*ep == 'm')
				scale = 1048576;
			else
				scale = 1;
			if (bytecnt > SSIZE_MAX / scale)
				errx(1, "%s: byte count too large", optarg);
			bytecnt *= scale;
			break;
		case 'p' :      /* pattern matching. */
			if (regcomp(&rgx, optarg, REG_EXTENDED|REG_NOSUB) != 0)
				errx(1, "%s: illegal regexp", optarg);
			pflag = 1;
			break;
		case 'l':		/* Line count. */
			if (numlines != 0)
				usage();
			if ((numlines = strtol(optarg, &ep, 10)) <= 0 || *ep)
				errx(1, "%s: illegal line count", optarg);
			break;
		default:
			usage();
		}
	argv += optind;
	argc -= optind;

	if (*argv != NULL)
		if (ifd == -1) {		/* Input file. */
			if ((ifd = open(*argv, O_RDONLY, 0)) < 0)
				err(1, "%s", *argv);
			++argv;
		}
	if (*argv != NULL)			/* File name prefix. */
		(void)strlcpy(fname, *argv++, sizeof(fname));
	if (*argv != NULL)
		usage();

	if (strlen(fname) + sufflen >= sizeof(fname))
		errx(1, "suffix is too long");
	if (pflag && (numlines != 0 || bytecnt != 0))
		usage();

	if (numlines == 0)
		numlines = DEFLINE;
	else if (bytecnt != 0)
		usage();

	if (ifd == -1)				/* Stdin by default. */
		ifd = 0;

	if (bytecnt) {
		split1();
		exit (0);
	}
	split2();
	if (pflag)
		regfree(&rgx);
	exit(0);
}

/*
 * split1 --
 *	Split the input by bytes.
 */
void
split1(void)
{
	ssize_t bcnt, dist, len;
	char *C;

	for (bcnt = 0;;)
		switch ((len = read(ifd, bfr, MAXBSIZE))) {
		case 0:
			exit(0);
		case -1:
			err(1, "read");
			/* NOTREACHED */
		default:
			if (!file_open)
				newfile();
			if (bcnt + len >= bytecnt) {
				dist = bytecnt - bcnt;
				if (write(ofd, bfr, dist) != dist)
					err(1, "write");
				len -= dist;
				for (C = bfr + dist; len >= bytecnt;
				    len -= bytecnt, C += bytecnt) {
					newfile();
					if (write(ofd, C, bytecnt) != bytecnt)
						err(1, "write");
				}
				if (len != 0) {
					newfile();
					if (write(ofd, C, len) != len)
						err(1, "write");
				} else
					file_open = 0;
				bcnt = len;
			} else {
				bcnt += len;
				if (write(ofd, bfr, len) != len)
					err(1, "write");
			}
		}
}

/*
 * split2 --
 *	Split the input by lines.
 */
void
split2(void)
{
	long lcnt = 0;
	FILE *infp;

	/* Stick a stream on top of input file descriptor */
	if ((infp = fdopen(ifd, "r")) == NULL)
		err(1, "fdopen");

	/* Process input one line at a time */
	while (fgets(bfr, sizeof(bfr), infp) != NULL) {
		const int len = strlen(bfr);

		if (len == 0)
			continue;

		/* If line is too long to deal with, just write it out */
		if (bfr[len - 1] != '\n')
			goto writeit;

		/* Check if we need to start a new file */
		if (pflag) {
			regmatch_t pmatch;

			pmatch.rm_so = 0;
			pmatch.rm_eo = len - 1;
			if (regexec(&rgx, bfr, 0, &pmatch, REG_STARTEND) == 0)
				newfile();
		} else if (lcnt++ == numlines) {
			newfile();
			lcnt = 1;
		}

writeit:
		/* Open output file if needed */
		if (!file_open)
			newfile();

		/* Write out line */
		if (write(ofd, bfr, len) != len)
			err(1, "write");
	}

	/* EOF or error? */
	if (ferror(infp))
		err(1, "read");
	else
		exit(0);
}

/*
 * newfile --
 *	Open a new output file.
 */
void
newfile(void)
{
	static char *suffix, *sufftail;
	char *sptr;

	if (ofd == -1) {
		ofd = fileno(stdout);
		if (*fname == '\0') {
			*fname = 'x';	/* no name specified, use 'x' */
			memset(fname + 1, 'a', sufflen);
			suffix = fname;
			sufflen++;	/* treat 'x' as part of suffix */
		} else {
			suffix = fname + strlen(fname);
			memset(suffix, 'a', sufflen);
		}
		suffix[sufflen] = '\0';
		sufftail = suffix + sufflen - 1;
	} else {
		for (sptr = sufftail; sptr >= suffix; sptr--) {
			if (*sptr != 'z') {
				(*sptr)++;
				break;
			} else
				*sptr = 'a';
		}
		if (sptr < suffix)
			errx(1, "too many files");
	}

	if (!freopen(fname, "w", stdout))
		err(1, "%s", fname);
	file_open = 1;
}

__dead void
usage(void)
{
	extern char *__progname;

	(void)fprintf(stderr, "usage: %s [-a suffix_length]\n"
	    "             [-b byte_count[k|m] | -l line_count | -p pattern] "
	    "[file [name]]\n", __progname);
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: split.c,v 1.21 2015/12/31 16:13:01 millert Exp $ */
2			/* $NetBSD: split.c,v 1.5 1995/08/31 22:22:05 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1987, 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/param.h> /* MAXBSIZE */
34			#include <sys/types.h>
35
36			#include <ctype.h>
37			#include <err.h>
38			#include <fcntl.h>
39			#include <limits.h>
40			#include <stdio.h>
41			#include <stdlib.h>
42			#include <string.h>
43			#include <unistd.h>
44			#include <regex.h>
45
46			#define DEFLINE 1000 /* Default num lines per file. */
47
48			ssize_t bytecnt; /* Byte count to split on. */
49			long numlines; /* Line count to split on. */
50			int file_open; /* If a file open. */
51			int ifd = -1, ofd = -1; /* Input/output file descriptors. */
52			char bfr[MAXBSIZE]; /* I/O buffer. */
53			char fname[PATH_MAX]; /* File name prefix. */
54			regex_t rgx;
55			int pflag;
56			int sufflen = 2; /* File name suffix length. */
57
58			void newfile(void);
59			void split1(void);
60			void split2(void);
61			__dead void usage(void);
62
63			int
64			main(int argc, char *argv[])
65			{
66			int ch, scale;
67			char ep, p;
68			const char *errstr;
69
70			if (pledge("stdio rpath wpath cpath", NULL) == -1)
71			err(1, "pledge");
72
73			while ((ch = getopt(argc, argv, "0123456789a:b:l:p:-")) != -1)
74			switch (ch) {
75			case '0': case '1': case '2': case '3': case '4':
76			case '5': case '6': case '7': case '8': case '9':
77			/*
78			* Undocumented kludge: split was originally designed
79			* to take a number after a dash.
80			*/
81			if (numlines == 0) {
82			p = argv[optind - 1];
83			if (p[0] == '-' && p[1] == ch && !p[2])
84			numlines = strtol(++p, &ep, 10);
85			else
86			numlines =
87			strtol(argv[optind] + 1, &ep, 10);
88			if (numlines <= 0 \|\| *ep)
89			errx(1, "%s: illegal line count",
90			optarg);
91			}
92			break;
93			case '-': /* Undocumented: historic stdin flag. */
94			if (ifd != -1)
95			usage();
96			ifd = 0;
97			break;
98			case 'a': /* suffix length. */
99			sufflen = strtonum(optarg, 1, NAME_MAX, &errstr);
100			if (errstr)
101			errx(1, "%s: %s", optarg, errstr);
102			break;
103			case 'b': /* Byte count. */
104			if ((bytecnt = strtol(optarg, &ep, 10)) <= 0 \|\|
105			(ep != '\0' && ep != 'k' && *ep != 'm'))
106			errx(1, "%s: illegal byte count", optarg);
107			if (*ep == 'k')
108			scale = 1024;
109			else if (*ep == 'm')
110			scale = 1048576;
111			else
112			scale = 1;
113			if (bytecnt > SSIZE_MAX / scale)
114			errx(1, "%s: byte count too large", optarg);
115			bytecnt *= scale;
116			break;
117			case 'p' : /* pattern matching. */
118			if (regcomp(&rgx, optarg, REG_EXTENDED\|REG_NOSUB) != 0)
119			errx(1, "%s: illegal regexp", optarg);
120			pflag = 1;
121			break;
122			case 'l': /* Line count. */
123			if (numlines != 0)
124			usage();
125			if ((numlines = strtol(optarg, &ep, 10)) <= 0 \|\| *ep)
126			errx(1, "%s: illegal line count", optarg);
127			break;
128			default:
129			usage();
130			}
131			argv += optind;
132			argc -= optind;
133
134			if (*argv != NULL)
135			if (ifd == -1) { /* Input file. */
136			if ((ifd = open(*argv, O_RDONLY, 0)) < 0)
137			err(1, "%s", *argv);
138			++argv;
139			}
140			if (argv != NULL) / File name prefix. */
141			(void)strlcpy(fname, *argv++, sizeof(fname));
142			if (*argv != NULL)
143			usage();
144
145			if (strlen(fname) + sufflen >= sizeof(fname))
146			errx(1, "suffix is too long");
147			if (pflag && (numlines != 0 \|\| bytecnt != 0))
148			usage();
149
150			if (numlines == 0)
151			numlines = DEFLINE;
152			else if (bytecnt != 0)
153			usage();
154
155			if (ifd == -1) /* Stdin by default. */
156			ifd = 0;
157
158			if (bytecnt) {
159			split1();
160			exit (0);
161			}
162			split2();
163			if (pflag)
164			regfree(&rgx);
165			exit(0);
166			}
167
168			/*
169			* split1 --
170			* Split the input by bytes.
171			*/
172			void
173			split1(void)
174			{
175			ssize_t bcnt, dist, len;
176			char *C;
177
178			for (bcnt = 0;;)
179			switch ((len = read(ifd, bfr, MAXBSIZE))) {
180			case 0:
181			exit(0);
182			case -1:
183			err(1, "read");
184			/* NOTREACHED */
185			default:
186			if (!file_open)
187			newfile();
188			if (bcnt + len >= bytecnt) {
189			dist = bytecnt - bcnt;
190			if (write(ofd, bfr, dist) != dist)
191			err(1, "write");
192			len -= dist;
193			for (C = bfr + dist; len >= bytecnt;
194			len -= bytecnt, C += bytecnt) {
195			newfile();
196			if (write(ofd, C, bytecnt) != bytecnt)
197			err(1, "write");
198			}
199			if (len != 0) {
200			newfile();
201			if (write(ofd, C, len) != len)
202			err(1, "write");
203			} else
204			file_open = 0;
205			bcnt = len;
206			} else {
207			bcnt += len;
208			if (write(ofd, bfr, len) != len)
209			err(1, "write");
210			}
211			}
212			}
213
214			/*
215			* split2 --
216			* Split the input by lines.
217			*/
218			void
219			split2(void)
220			{
221			long lcnt = 0;
222			FILE *infp;
223
224			/* Stick a stream on top of input file descriptor */
225			if ((infp = fdopen(ifd, "r")) == NULL)
226			err(1, "fdopen");
227
228			/* Process input one line at a time */
229			while (fgets(bfr, sizeof(bfr), infp) != NULL) {
230			const int len = strlen(bfr);
231
232			if (len == 0)
233			continue;
234
235			/* If line is too long to deal with, just write it out */
236			if (bfr[len - 1] != '\n')
237			goto writeit;
238
239			/* Check if we need to start a new file */
240			if (pflag) {
241			regmatch_t pmatch;
242
243			pmatch.rm_so = 0;
244			pmatch.rm_eo = len - 1;
245			if (regexec(&rgx, bfr, 0, &pmatch, REG_STARTEND) == 0)
246			newfile();
247			} else if (lcnt++ == numlines) {
248			newfile();
249			lcnt = 1;
250			}
251
252			writeit:
253			/* Open output file if needed */
254			if (!file_open)
255			newfile();
256
257			/* Write out line */
258			if (write(ofd, bfr, len) != len)
259			err(1, "write");
260			}
261
262			/* EOF or error? */
263			if (ferror(infp))
264			err(1, "read");
265			else
266			exit(0);
267			}
268
269			/*
270			* newfile --
271			* Open a new output file.
272			*/
273			void
274			newfile(void)
275			{
276			static char suffix, sufftail;
277			char *sptr;
278
279			if (ofd == -1) {
280			ofd = fileno(stdout);
281			if (*fname == '\0') {
282			fname = 'x'; / no name specified, use 'x' */
283			memset(fname + 1, 'a', sufflen);
284			suffix = fname;
285			sufflen++; /* treat 'x' as part of suffix */
286			} else {
287			suffix = fname + strlen(fname);
288			memset(suffix, 'a', sufflen);
289			}
290			suffix[sufflen] = '\0';
291			sufftail = suffix + sufflen - 1;
292			} else {
293			for (sptr = sufftail; sptr >= suffix; sptr--) {
294			if (*sptr != 'z') {
295			(*sptr)++;
296			break;
297			} else
298			*sptr = 'a';
299			}
300			if (sptr < suffix)
301			errx(1, "too many files");
302			}
303
304			if (!freopen(fname, "w", stdout))
305			err(1, "%s", fname);
306			file_open = 1;
307			}
308
309			__dead void
310			usage(void)
311			{
312			extern char *__progname;
313
314			(void)fprintf(stderr, "usage: %s [-a suffix_length]\n"
315			" [-b byte_count[k\|m] \| -l line_count \| -p pattern] "
316			"[file [name]]\n", __progname);
317			exit(1);
318			}