2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static const char copyright[] =
39 "@(#) Copyright (c) 1989, 1993\n\
40 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)uniq.c 8.3 (Berkeley) 5/4/95";
47 static const char rcsid[] =
62 #define MAXLINELEN (LINE_MAX + 1)
64 int cflag, dflag, uflag;
65 int numchars, numfields, repeats;
67 FILE *file(const char *, const char *);
68 wchar_t *getline(wchar_t *, size_t, FILE *);
69 void show(FILE *, wchar_t *);
70 wchar_t *skip(wchar_t *);
71 void obsolete(char *[]);
72 static void usage(void);
73 int wcsicoll(wchar_t *, wchar_t *);
76 main (int argc, char *argv[])
81 wchar_t *prevline, *thisline;
86 (void) setlocale(LC_ALL, "");
89 while ((ch = getopt(argc, argv, "cdif:s:u")) != -1)
101 numfields = strtol(optarg, &p, 10);
102 if (numfields < 0 || *p)
103 errx(1, "illegal field skip value: %s", optarg);
106 numchars = strtol(optarg, &p, 10);
107 if (numchars < 0 || *p)
108 errx(1, "illegal character skip value: %s", optarg);
121 /* If no flags are set, default is -d -u. */
125 } else if (!dflag && !uflag)
134 if (argc > 0 && strcmp(argv[0], "-") != 0)
135 ifp = file(ifn = argv[0], "r");
137 ofp = file(argv[1], "w");
139 prevline = malloc(MAXLINELEN * sizeof(*prevline));
140 thisline = malloc(MAXLINELEN * sizeof(*thisline));
141 if (prevline == NULL || thisline == NULL)
144 if (getline(prevline, MAXLINELEN, ifp) == NULL) {
149 if (!cflag && uflag && dflag)
152 while (getline(thisline, MAXLINELEN, ifp)) {
153 /* If requested get the chosen fields + character offsets. */
154 if (numfields || numchars) {
162 /* If different, print; set previous to new value. */
164 comp = wcsicoll(t1, t2);
166 comp = wcscoll(t1, t2);
169 if (cflag || !dflag || !uflag)
173 if (!cflag && uflag && dflag)
182 if (cflag || !dflag || !uflag)
188 getline(wchar_t *buf, size_t buflen, FILE *fp)
194 while (bufpos + 2 != buflen && (ch = getwc(fp)) != WEOF && ch != '\n')
196 if (bufpos + 1 != buflen)
198 while (ch != WEOF && ch != '\n')
201 return (bufpos != 0 || ch == '\n' ? buf : NULL);
206 * Output a line depending on the flags and number of repetitions
210 show(FILE *ofp, wchar_t *str)
214 (void)fprintf(ofp, "%4d %ls\n", repeats + 1, str);
215 if ((dflag && repeats) || (uflag && !repeats))
216 (void)fprintf(ofp, "%ls\n", str);
224 for (nfields = 0; *str != '\0' && nfields++ != numfields; ) {
225 while (iswblank(*str))
227 while (*str != '\0' && !iswblank(*str))
230 for (nchars = numchars; nchars-- && *str; ++str);
235 file(const char *name, const char *mode)
239 if ((fp = fopen(name, mode)) == NULL)
245 obsolete(char *argv[])
248 char *ap, *p, *start;
250 while ((ap = *++argv)) {
251 /* Return if "--" or not an option of any form. */
255 } else if (ap[1] == '-')
257 if (!isdigit((unsigned char)ap[1]))
260 * Digit signifies an old-style option. Malloc space for dash,
261 * new option and argument.
264 if ((start = p = malloc(len + 3)) == NULL)
267 *p++ = ap[0] == '+' ? 's' : 'f';
268 (void)strcpy(p, ap + 1);
276 (void)fprintf(stderr,
277 "usage: uniq [-c | -d | -u] [-i] [-f fields] [-s chars] [input [output]]\n");
282 wcsicoll(wchar_t *s1, wchar_t *s2)
284 wchar_t *p, line1[MAXLINELEN], line2[MAXLINELEN];
286 for (p = line1; *s1; s1++)
287 *p++ = towlower(*s1);
289 for (p = line2; *s2; s2++)
290 *p++ = towlower(*s2);
292 return (wcscoll(line1, line2));