1997-03-11 13:08:12 +00:00
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Case Larsen.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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1997-08-21 06:51:10 +00:00
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static const char copyright[] =
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1997-03-11 13:08:12 +00:00
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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1997-08-21 06:51:10 +00:00
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#if 0
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1997-03-11 13:08:12 +00:00
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static char sccsid[] = "@(#)uniq.c 8.3 (Berkeley) 5/4/95";
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1997-08-21 06:51:10 +00:00
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#endif
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static const char rcsid[] =
|
1999-08-28 01:08:13 +00:00
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"$FreeBSD$";
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1997-03-11 13:08:12 +00:00
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#endif /* not lint */
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2013-07-18 22:11:27 +00:00
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#include <sys/capability.h>
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|
|
1997-03-11 13:08:12 +00:00
|
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#include <ctype.h>
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1997-08-21 06:51:10 +00:00
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#include <err.h>
|
2013-07-18 22:11:27 +00:00
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|
#include <errno.h>
|
1999-10-24 04:08:15 +00:00
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|
#include <limits.h>
|
1998-03-08 20:56:43 +00:00
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|
#include <locale.h>
|
2013-07-18 22:11:27 +00:00
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#include <nl_types.h>
|
2009-12-17 17:03:47 +00:00
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|
#include <stdint.h>
|
2010-03-08 19:40:22 +00:00
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|
#define _WITH_GETLINE
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1997-08-21 06:51:10 +00:00
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#include <stdio.h>
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1997-03-11 13:08:12 +00:00
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#include <stdlib.h>
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#include <string.h>
|
2013-07-18 22:11:27 +00:00
|
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#include <termios.h>
|
1997-03-11 13:08:12 +00:00
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#include <unistd.h>
|
2004-07-02 23:43:05 +00:00
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#include <wchar.h>
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#include <wctype.h>
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1997-03-11 13:08:12 +00:00
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2011-11-06 08:18:11 +00:00
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static int cflag, dflag, uflag, iflag;
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static int numchars, numfields, repeats;
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static FILE *file(const char *, const char *);
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static wchar_t *convert(const char *);
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static int inlcmp(const char *, const char *);
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static void show(FILE *, const char *);
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static wchar_t *skip(wchar_t *);
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static void obsolete(char *[]);
|
2002-03-22 01:42:45 +00:00
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static void usage(void);
|
1999-10-24 04:08:15 +00:00
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|
2013-07-18 22:11:27 +00:00
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static void
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strerror_init(void)
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{
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/*
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* Cache NLS data before entering capability mode.
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* XXXPJD: There should be strerror_init() and strsignal_init() in libc.
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*/
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|
|
(void)catopen("libc", NL_CAT_LOCALE);
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|
|
}
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|
1997-03-11 13:08:12 +00:00
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int
|
2002-09-04 23:29:10 +00:00
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main (int argc, char *argv[])
|
1997-03-11 13:08:12 +00:00
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|
{
|
2010-03-08 19:40:22 +00:00
|
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|
wchar_t *tprev, *tthis;
|
1997-03-11 13:08:12 +00:00
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|
FILE *ifp, *ofp;
|
2010-03-06 19:21:57 +00:00
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|
int ch, comp;
|
2010-03-08 19:40:22 +00:00
|
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|
size_t prevbuflen, thisbuflen, b1;
|
2010-03-06 19:21:57 +00:00
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|
char *prevline, *thisline, *p;
|
2004-07-02 23:43:05 +00:00
|
|
|
const char *ifn;
|
2013-07-18 22:11:27 +00:00
|
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|
cap_rights_t rights;
|
1997-03-11 13:08:12 +00:00
|
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|
|
2002-04-19 08:16:01 +00:00
|
|
|
(void) setlocale(LC_ALL, "");
|
1998-03-08 20:56:43 +00:00
|
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|
1997-03-11 13:08:12 +00:00
|
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|
obsolete(argv);
|
2002-05-29 23:52:55 +00:00
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|
while ((ch = getopt(argc, argv, "cdif:s:u")) != -1)
|
1997-03-11 13:08:12 +00:00
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|
switch (ch) {
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|
|
case 'c':
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|
|
cflag = 1;
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|
break;
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|
|
case 'd':
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|
dflag = 1;
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|
break;
|
1997-09-07 15:09:22 +00:00
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|
case 'i':
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|
iflag = 1;
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|
|
break;
|
1997-03-11 13:08:12 +00:00
|
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|
case 'f':
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|
|
numfields = strtol(optarg, &p, 10);
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|
|
if (numfields < 0 || *p)
|
1997-08-21 06:51:10 +00:00
|
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|
errx(1, "illegal field skip value: %s", optarg);
|
1997-03-11 13:08:12 +00:00
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|
|
break;
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|
case 's':
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|
numchars = strtol(optarg, &p, 10);
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|
|
if (numchars < 0 || *p)
|
1997-08-21 06:51:10 +00:00
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|
errx(1, "illegal character skip value: %s", optarg);
|
1997-03-11 13:08:12 +00:00
|
|
|
break;
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|
|
case 'u':
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|
uflag = 1;
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|
break;
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|
|
case '?':
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|
default:
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|
|
usage();
|
2007-05-17 00:11:58 +00:00
|
|
|
}
|
1997-03-11 13:08:12 +00:00
|
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|
2002-05-29 23:52:55 +00:00
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|
argc -= optind;
|
2007-05-17 00:18:01 +00:00
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|
argv += optind;
|
1997-03-11 13:08:12 +00:00
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|
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|
|
/* If no flags are set, default is -d -u. */
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|
if (cflag) {
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|
|
if (dflag || uflag)
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|
usage();
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|
} else if (!dflag && !uflag)
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|
dflag = uflag = 1;
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|
2002-05-30 00:07:14 +00:00
|
|
|
if (argc > 2)
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|
usage();
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ifp = stdin;
|
2004-07-02 23:43:05 +00:00
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|
ifn = "stdin";
|
2002-05-30 00:07:14 +00:00
|
|
|
ofp = stdout;
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|
|
if (argc > 0 && strcmp(argv[0], "-") != 0)
|
2004-07-02 23:43:05 +00:00
|
|
|
ifp = file(ifn = argv[0], "r");
|
2013-07-18 22:11:27 +00:00
|
|
|
if (cap_rights_limit(fileno(ifp), CAP_FSTAT | CAP_READ) < 0 &&
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|
|
errno != ENOSYS) {
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|
err(1, "unable to limit rights for %s", ifn);
|
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|
|
}
|
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|
rights = CAP_FSTAT | CAP_WRITE;
|
2002-05-30 00:07:14 +00:00
|
|
|
if (argc > 1)
|
1997-03-11 13:08:12 +00:00
|
|
|
ofp = file(argv[1], "w");
|
2013-07-18 22:11:27 +00:00
|
|
|
else
|
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|
|
rights |= CAP_IOCTL;
|
|
|
|
if (cap_rights_limit(fileno(ofp), rights) < 0 && errno != ENOSYS) {
|
|
|
|
err(1, "unable to limit rights for %s",
|
|
|
|
argc > 1 ? argv[1] : "stdout");
|
|
|
|
}
|
|
|
|
if ((rights & CAP_IOCTL) != 0) {
|
|
|
|
unsigned long cmd;
|
|
|
|
|
|
|
|
cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
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|
|
|
|
|
|
|
if (cap_ioctls_limit(fileno(ofp), &cmd, 1) < 0 &&
|
|
|
|
errno != ENOSYS) {
|
|
|
|
err(1, "unable to limit ioctls for %s",
|
|
|
|
argc > 1 ? argv[1] : "stdout");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
strerror_init();
|
|
|
|
if (cap_enter() < 0 && errno != ENOSYS)
|
|
|
|
err(1, "unable to enter capability mode");
|
1997-03-11 13:08:12 +00:00
|
|
|
|
2010-03-08 19:40:22 +00:00
|
|
|
prevbuflen = thisbuflen = 0;
|
|
|
|
prevline = thisline = NULL;
|
1997-03-11 13:08:12 +00:00
|
|
|
|
2010-03-08 19:40:22 +00:00
|
|
|
if (getline(&prevline, &prevbuflen, ifp) < 0) {
|
2007-05-17 00:19:56 +00:00
|
|
|
if (ferror(ifp))
|
2007-05-17 00:18:01 +00:00
|
|
|
err(1, "%s", ifn);
|
1997-03-11 13:08:12 +00:00
|
|
|
exit(0);
|
2004-07-02 23:43:05 +00:00
|
|
|
}
|
2010-03-08 19:40:22 +00:00
|
|
|
tprev = convert(prevline);
|
2010-03-06 19:21:57 +00:00
|
|
|
|
2002-07-05 09:28:13 +00:00
|
|
|
if (!cflag && uflag && dflag)
|
|
|
|
show(ofp, prevline);
|
1997-03-11 13:08:12 +00:00
|
|
|
|
2010-03-08 19:40:22 +00:00
|
|
|
tthis = NULL;
|
|
|
|
while (getline(&thisline, &thisbuflen, ifp) >= 0) {
|
|
|
|
if (tthis != NULL)
|
|
|
|
free(tthis);
|
|
|
|
tthis = convert(thisline);
|
1997-03-11 13:08:12 +00:00
|
|
|
|
2010-03-06 19:21:57 +00:00
|
|
|
if (tthis == NULL && tprev == NULL)
|
2010-03-08 19:40:22 +00:00
|
|
|
comp = inlcmp(thisline, prevline);
|
2010-03-06 19:21:57 +00:00
|
|
|
else if (tthis == NULL || tprev == NULL)
|
|
|
|
comp = 1;
|
1997-09-07 15:09:22 +00:00
|
|
|
else
|
2010-03-06 19:21:57 +00:00
|
|
|
comp = wcscoll(tthis, tprev);
|
1997-09-07 15:09:22 +00:00
|
|
|
|
|
|
|
if (comp) {
|
2010-03-06 19:21:57 +00:00
|
|
|
/* If different, print; set previous to new value. */
|
2002-07-05 09:28:13 +00:00
|
|
|
if (cflag || !dflag || !uflag)
|
|
|
|
show(ofp, prevline);
|
2010-03-06 19:21:57 +00:00
|
|
|
p = prevline;
|
2010-03-08 19:40:22 +00:00
|
|
|
b1 = prevbuflen;
|
1997-03-11 13:08:12 +00:00
|
|
|
prevline = thisline;
|
2010-03-08 19:40:22 +00:00
|
|
|
prevbuflen = thisbuflen;
|
|
|
|
if (tprev != NULL)
|
|
|
|
free(tprev);
|
2010-03-06 19:21:57 +00:00
|
|
|
tprev = tthis;
|
2002-07-05 09:28:13 +00:00
|
|
|
if (!cflag && uflag && dflag)
|
|
|
|
show(ofp, prevline);
|
2010-03-06 19:21:57 +00:00
|
|
|
thisline = p;
|
2010-03-08 19:40:22 +00:00
|
|
|
thisbuflen = b1;
|
|
|
|
tthis = NULL;
|
1997-03-11 13:08:12 +00:00
|
|
|
repeats = 0;
|
|
|
|
} else
|
|
|
|
++repeats;
|
|
|
|
}
|
2004-07-02 23:43:05 +00:00
|
|
|
if (ferror(ifp))
|
2007-05-17 00:18:01 +00:00
|
|
|
err(1, "%s", ifn);
|
2002-07-05 09:28:13 +00:00
|
|
|
if (cflag || !dflag || !uflag)
|
|
|
|
show(ofp, prevline);
|
1997-03-11 13:08:12 +00:00
|
|
|
exit(0);
|
|
|
|
}
|
|
|
|
|
2011-11-06 08:18:11 +00:00
|
|
|
static wchar_t *
|
2010-03-08 19:40:22 +00:00
|
|
|
convert(const char *str)
|
2002-06-21 07:08:34 +00:00
|
|
|
{
|
2010-03-08 19:40:22 +00:00
|
|
|
size_t n;
|
|
|
|
wchar_t *buf, *ret, *p;
|
|
|
|
|
|
|
|
if ((n = mbstowcs(NULL, str, 0)) == (size_t)-1)
|
|
|
|
return (NULL);
|
2010-03-09 21:06:01 +00:00
|
|
|
if (SIZE_MAX / sizeof(*buf) < n + 1)
|
|
|
|
errx(1, "conversion buffer length overflow");
|
2010-03-08 19:40:22 +00:00
|
|
|
if ((buf = malloc((n + 1) * sizeof(*buf))) == NULL)
|
|
|
|
err(1, "malloc");
|
|
|
|
if (mbstowcs(buf, str, n + 1) != n)
|
|
|
|
errx(1, "internal mbstowcs() error");
|
|
|
|
/* The last line may not end with \n. */
|
|
|
|
if (n > 0 && buf[n - 1] == L'\n')
|
|
|
|
buf[n - 1] = L'\0';
|
|
|
|
|
|
|
|
/* If requested get the chosen fields + character offsets. */
|
|
|
|
if (numfields || numchars) {
|
|
|
|
if ((ret = wcsdup(skip(buf))) == NULL)
|
|
|
|
err(1, "wcsdup");
|
|
|
|
free(buf);
|
|
|
|
} else
|
|
|
|
ret = buf;
|
|
|
|
|
|
|
|
if (iflag) {
|
|
|
|
for (p = ret; *p != L'\0'; p++)
|
|
|
|
*p = towlower(*p);
|
2008-02-08 23:04:13 +00:00
|
|
|
}
|
2002-06-21 07:08:34 +00:00
|
|
|
|
2010-03-08 19:40:22 +00:00
|
|
|
return (ret);
|
2002-06-21 07:08:34 +00:00
|
|
|
}
|
|
|
|
|
2011-11-06 08:18:11 +00:00
|
|
|
static int
|
2010-03-08 19:40:22 +00:00
|
|
|
inlcmp(const char *s1, const char *s2)
|
2010-03-06 19:21:57 +00:00
|
|
|
{
|
2010-03-08 19:40:22 +00:00
|
|
|
int c1, c2;
|
2010-03-06 19:21:57 +00:00
|
|
|
|
2010-03-08 19:40:22 +00:00
|
|
|
while (*s1 == *s2++)
|
|
|
|
if (*s1++ == '\0')
|
|
|
|
return (0);
|
|
|
|
c1 = (unsigned char)*s1;
|
|
|
|
c2 = (unsigned char)*(s2 - 1);
|
|
|
|
/* The last line may not end with \n. */
|
|
|
|
if (c1 == '\n')
|
|
|
|
c1 = '\0';
|
|
|
|
if (c2 == '\n')
|
|
|
|
c2 = '\0';
|
|
|
|
return (c1 - c2);
|
2010-03-06 19:21:57 +00:00
|
|
|
}
|
|
|
|
|
1997-03-11 13:08:12 +00:00
|
|
|
/*
|
|
|
|
* show --
|
|
|
|
* Output a line depending on the flags and number of repetitions
|
|
|
|
* of the line.
|
|
|
|
*/
|
2011-11-06 08:18:11 +00:00
|
|
|
static void
|
2010-03-06 19:21:57 +00:00
|
|
|
show(FILE *ofp, const char *str)
|
1997-03-11 13:08:12 +00:00
|
|
|
{
|
|
|
|
|
2004-09-14 12:01:18 +00:00
|
|
|
if (cflag)
|
2010-03-08 19:40:22 +00:00
|
|
|
(void)fprintf(ofp, "%4d %s", repeats + 1, str);
|
1997-08-21 06:51:10 +00:00
|
|
|
if ((dflag && repeats) || (uflag && !repeats))
|
2010-03-08 19:40:22 +00:00
|
|
|
(void)fprintf(ofp, "%s", str);
|
1997-03-11 13:08:12 +00:00
|
|
|
}
|
|
|
|
|
2011-11-06 08:18:11 +00:00
|
|
|
static wchar_t *
|
2004-07-02 23:43:05 +00:00
|
|
|
skip(wchar_t *str)
|
1997-03-11 13:08:12 +00:00
|
|
|
{
|
2002-09-04 23:29:10 +00:00
|
|
|
int nchars, nfields;
|
2002-06-21 07:59:31 +00:00
|
|
|
|
2010-03-06 19:21:57 +00:00
|
|
|
for (nfields = 0; *str != L'\0' && nfields++ != numfields; ) {
|
2004-07-02 23:43:05 +00:00
|
|
|
while (iswblank(*str))
|
2002-06-21 07:59:31 +00:00
|
|
|
str++;
|
2010-03-06 19:21:57 +00:00
|
|
|
while (*str != L'\0' && !iswblank(*str))
|
2002-06-21 07:59:31 +00:00
|
|
|
str++;
|
|
|
|
}
|
2010-03-06 19:21:57 +00:00
|
|
|
for (nchars = numchars; nchars-- && *str != L'\0'; ++str)
|
|
|
|
;
|
1997-03-11 13:08:12 +00:00
|
|
|
return(str);
|
|
|
|
}
|
|
|
|
|
2011-11-06 08:18:11 +00:00
|
|
|
static FILE *
|
2002-09-04 23:29:10 +00:00
|
|
|
file(const char *name, const char *mode)
|
1997-03-11 13:08:12 +00:00
|
|
|
{
|
|
|
|
FILE *fp;
|
|
|
|
|
|
|
|
if ((fp = fopen(name, mode)) == NULL)
|
1997-08-21 06:51:10 +00:00
|
|
|
err(1, "%s", name);
|
1997-03-11 13:08:12 +00:00
|
|
|
return(fp);
|
|
|
|
}
|
|
|
|
|
2011-11-06 08:18:11 +00:00
|
|
|
static void
|
2002-09-04 23:29:10 +00:00
|
|
|
obsolete(char *argv[])
|
1997-03-11 13:08:12 +00:00
|
|
|
{
|
|
|
|
int len;
|
|
|
|
char *ap, *p, *start;
|
|
|
|
|
1997-08-21 06:51:10 +00:00
|
|
|
while ((ap = *++argv)) {
|
1997-03-11 13:08:12 +00:00
|
|
|
/* Return if "--" or not an option of any form. */
|
|
|
|
if (ap[0] != '-') {
|
|
|
|
if (ap[0] != '+')
|
|
|
|
return;
|
|
|
|
} else if (ap[1] == '-')
|
|
|
|
return;
|
1998-03-08 20:56:43 +00:00
|
|
|
if (!isdigit((unsigned char)ap[1]))
|
1997-03-11 13:08:12 +00:00
|
|
|
continue;
|
|
|
|
/*
|
|
|
|
* Digit signifies an old-style option. Malloc space for dash,
|
|
|
|
* new option and argument.
|
|
|
|
*/
|
|
|
|
len = strlen(ap);
|
|
|
|
if ((start = p = malloc(len + 3)) == NULL)
|
2002-07-05 09:28:13 +00:00
|
|
|
err(1, "malloc");
|
1997-03-11 13:08:12 +00:00
|
|
|
*p++ = '-';
|
|
|
|
*p++ = ap[0] == '+' ? 's' : 'f';
|
|
|
|
(void)strcpy(p, ap + 1);
|
|
|
|
*argv = start;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1997-08-21 06:51:10 +00:00
|
|
|
static void
|
2002-09-04 23:29:10 +00:00
|
|
|
usage(void)
|
1997-03-11 13:08:12 +00:00
|
|
|
{
|
|
|
|
(void)fprintf(stderr,
|
2002-06-06 03:05:30 +00:00
|
|
|
"usage: uniq [-c | -d | -u] [-i] [-f fields] [-s chars] [input [output]]\n");
|
1997-03-11 13:08:12 +00:00
|
|
|
exit(1);
|
|
|
|
}
|