| 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 | } |