1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #include <langinfo.h>
32 #include <locale.h>
33 #include <nl_types.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <time.h>
37
38 static int number(char *);
39 static int jan1(const int);
40 static void badmonth(void);
41 static void badyear(void);
42 static void usage(void);
43 static void cal(const int, const int, char *, const int);
44 static void load_months(void);
45 static void pstr(char *, const int);
46
47 #define DAYW " S M Tu W Th F S"
48 #define TITLE " %s %u\n"
49 #define YEAR "\n\n\n\t\t\t\t%u\n\n"
50 #define MONTH "\t%4.3s\t\t\t%.3s\t\t%10.3s\n"
51
52 static char *months[] = {
53 "January", "February", "March", "April",
54 "May", "June", "July", "August",
55 "September", "October", "November", "December",
56 };
57
58 static char *short_months[] = {
59 "Jan", "Feb", "Mar", "Apr",
60 "May", "Jun", "Jul", "Aug",
61 "Sep", "Oct", "Nov", "Dec",
62 };
63
64 static char mon[] = {
65 0,
66 31, 29, 31, 30,
67 31, 30, 31, 31,
68 30, 31, 30, 31,
69 };
70
71 static char *myname;
72 static char string[432];
73 static struct tm *thetime;
74 static time_t timbuf;
75
76 int
main(int argc,char * argv[])77 main(int argc, char *argv[])
78 {
79 int y, i, j;
80 int m;
81 char *time_locale;
82 char *ldayw;
83
84 myname = argv[0];
85
86 (void) setlocale(LC_ALL, "");
87 #if !defined(TEXT_DOMAIN)
88 #define TEXT_DOMAIN "SYS_TEST"
89 #endif
90 (void) textdomain(TEXT_DOMAIN);
91
92
93 while (getopt(argc, argv, "") != EOF)
94 usage();
95
96 argc -= optind;
97 argv = &argv[optind];
98
99 time_locale = setlocale(LC_TIME, NULL);
100 if ((time_locale[0] != 'C') || (time_locale[1] != '\0'))
101 load_months();
102
103 /*
104 * TRANSLATION_NOTE
105 * This message is to be used for displaying
106 * the names of the seven days, from Sunday to Saturday.
107 * The length of the name of each one should be two or less.
108 */
109 ldayw = dcgettext(NULL, DAYW, LC_TIME);
110
111 switch (argc) {
112 case 0:
113 timbuf = time(&timbuf);
114 thetime = localtime(&timbuf);
115 m = thetime->tm_mon + 1;
116 y = thetime->tm_year + 1900;
117 break;
118 case 1:
119 goto xlong;
120 case 2:
121 m = number(argv[0]);
122 y = number(argv[1]);
123 break;
124 default:
125 usage();
126 }
127
128 /*
129 * print out just month
130 */
131
132 if (m < 1 || m > 12)
133 badmonth();
134 if (y < 1 || y > 9999)
135 badyear();
136 /*
137 * TRANSLATION_NOTE
138 * This message is to be used for displaying
139 * specified month and year.
140 */
141 (void) printf(dcgettext(NULL, TITLE, LC_TIME), months[m-1], y);
142 (void) printf("%s\n", ldayw);
143 cal(m, y, string, 24);
144 for (i = 0; i < 6*24; i += 24)
145 pstr(string+i, 24);
146 return (0);
147
148 /*
149 * print out complete year
150 */
151
152 xlong:
153 y = number(argv[0]);
154 if (y < 1 || y > 9999)
155 badyear();
156 /*
157 * TRANSLATION_NOTE
158 * This message is to be used for displaying
159 * specified year.
160 */
161 (void) printf(dcgettext(NULL, YEAR, LC_TIME), y);
162 for (i = 0; i < 12; i += 3) {
163 for (j = 0; j < 6*72; j++)
164 string[j] = '\0';
165 /*
166 * TRANSLATION_NOTE
167 * This message is to be used for displaying
168 * names of three months per a line and should be
169 * correctly translated according to the display width
170 * of the names of months.
171 */
172 (void) printf(
173 dcgettext(NULL, MONTH, LC_TIME),
174 short_months[i], short_months[i+1], short_months[i+2]);
175 (void) printf("%s %s %s\n", ldayw, ldayw, ldayw);
176 cal(i+1, y, string, 72);
177 cal(i+2, y, string+23, 72);
178 cal(i+3, y, string+46, 72);
179 for (j = 0; j < 6*72; j += 72)
180 pstr(string+j, 72);
181 }
182 (void) printf("\n\n\n");
183 return (0);
184 }
185
186 static int
number(char * str)187 number(char *str)
188 {
189 int n, c;
190 char *s;
191
192 n = 0;
193 s = str;
194 /*LINTED*/
195 while (c = *s++) {
196 if (c < '0' || c > '9')
197 return (0);
198 n = n*10 + c-'0';
199 }
200 return (n);
201 }
202
203 static void
pstr(char * str,const int n)204 pstr(char *str, const int n)
205 {
206 int i;
207 char *s;
208
209 s = str;
210 i = n;
211 while (i--)
212 if (*s++ == '\0')
213 s[-1] = ' ';
214 i = n+1;
215 while (i--)
216 if (*--s != ' ')
217 break;
218 s[1] = '\0';
219 (void) printf("%s\n", str);
220 }
221
222 static void
cal(const int m,const int y,char * p,const int w)223 cal(const int m, const int y, char *p, const int w)
224 {
225 int d, i;
226 char *s;
227
228 s = (char *)p;
229 d = jan1(y);
230 mon[2] = 29;
231 mon[9] = 30;
232
233 switch ((jan1(y+1)+7-d)%7) {
234
235 /*
236 * non-leap year
237 */
238 case 1:
239 mon[2] = 28;
240 break;
241
242 /*
243 * 1752
244 */
245 default:
246 mon[9] = 19;
247 break;
248
249 /*
250 * leap year
251 */
252 case 2:
253 ;
254 }
255 for (i = 1; i < m; i++)
256 d += mon[i];
257 d %= 7;
258 s += 3*d;
259 for (i = 1; i <= mon[m]; i++) {
260 if (i == 3 && mon[m] == 19) {
261 i += 11;
262 mon[m] += 11;
263 }
264 if (i > 9)
265 *s = i/10+'0';
266 s++;
267 *s++ = i%10+'0';
268 s++;
269 if (++d == 7) {
270 d = 0;
271 s = p+w;
272 p = s;
273 }
274 }
275 }
276
277 /*
278 * return day of the week
279 * of jan 1 of given year
280 */
281
282 static int
jan1(const int yr)283 jan1(const int yr)
284 {
285 int y, d;
286
287 /*
288 * normal gregorian calendar
289 * one extra day per four years
290 */
291
292 y = yr;
293 d = 4+y+(y+3)/4;
294
295 /*
296 * julian calendar
297 * regular gregorian
298 * less three days per 400
299 */
300
301 if (y > 1800) {
302 d -= (y-1701)/100;
303 d += (y-1601)/400;
304 }
305
306 /*
307 * great calendar changeover instant
308 */
309
310 if (y > 1752)
311 d += 3;
312
313 return (d%7);
314 }
315
316 static void
load_months(void)317 load_months(void)
318 {
319 int month;
320
321 for (month = MON_1; month <= MON_12; month++)
322 months[month - MON_1] = nl_langinfo(month);
323 for (month = ABMON_1; month <= ABMON_12; month++)
324 short_months[month - ABMON_1] = nl_langinfo(month);
325 }
326
327 static void
badmonth()328 badmonth()
329 {
330 (void) fprintf(stderr, gettext("%s: bad month\n"), myname);
331 usage();
332 }
333
334 static void
badyear()335 badyear()
336 {
337 (void) fprintf(stderr, gettext("%s: bad year\n"), myname);
338 usage();
339 }
340
341 static void
usage(void)342 usage(void)
343 {
344 (void) fprintf(stderr, gettext("usage: %s [ [month] year ]\n"), myname);
345 exit(1);
346 }
347