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af359dea C |
1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)attime.c 5.2 (Berkeley) 8/30/90"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include <sys/types.h> | |
39 | #include <sys/time.h> | |
40 | #include <stdio.h> | |
41 | #include <string.h> | |
42 | ||
43 | #define HR (60 * 60) | |
44 | #define DAY (24 * HR) | |
45 | #define MON (30 * DAY) | |
46 | ||
47 | static time_t now; | |
48 | /* | |
49 | * prttime prints a time in hours and minutes or minutes and seconds. | |
50 | * The character string tail is printed at the end, obvious | |
51 | * strings to pass are "", " ", or "am". | |
52 | */ | |
53 | static char * | |
54 | prttime(tim, tail) | |
55 | time_t tim; | |
56 | char *tail; | |
57 | { | |
58 | int mins; | |
59 | static char timebuf[32]; | |
60 | ||
61 | if (tim >= 60) { | |
62 | mins = tim % 60; | |
63 | (void) sprintf(timebuf, "%2d:%02d%s", (int)(tim / 60), mins, | |
64 | tail); | |
65 | } else if (tim >= 0) | |
66 | (void) sprintf(timebuf, " %2d%s", (int)tim, tail); | |
67 | else | |
68 | (void) strcpy(timebuf, tail); | |
69 | ||
70 | return (timebuf); | |
71 | } | |
72 | ||
73 | static char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }; | |
74 | static char *month[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
75 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; | |
76 | ||
77 | /* prtat prints a 12 hour time given a pointer to a time of day */ | |
78 | char * | |
79 | attime(started) | |
80 | time_t *started; | |
81 | { | |
82 | struct tm *p; | |
83 | register int hr, pm; | |
84 | static char prbuff[64]; | |
85 | ||
86 | if (now == 0) | |
87 | (void) time(&now); | |
88 | p = localtime(started); | |
89 | hr = p->tm_hour; | |
90 | pm = (hr > 11); | |
91 | if (hr > 11) | |
92 | hr -= 12; | |
93 | if (hr == 0) | |
94 | hr = 12; | |
95 | if (now - *started <= 18 * HR) | |
96 | return (prttime((time_t)hr * 60 + p->tm_min, pm ? "pm" : "am")); | |
97 | if (now - *started <= 7 * DAY) | |
98 | (void) sprintf(prbuff, "%*s%d%s", hr < 10 ? 4 : 3, | |
99 | weekday[p->tm_wday], hr, pm ? "pm" : "am"); | |
100 | else | |
101 | (void) sprintf(prbuff, "%2d%s%2d", p->tm_mday, | |
102 | month[p->tm_mon], p->tm_year); | |
103 | ||
104 | return (prbuff); | |
105 | } |