1 /*- 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. 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 #if 0 36 static char sccsid[] = "@(#)unctime.c 8.2 (Berkeley) 6/14/94"; 37 #endif 38 static const char rcsid[] = 39 "$Id$"; 40 #endif /* not lint */ 41 42 #include <time.h> 43 #ifdef __STDC__ 44 #include <stdlib.h> 45 #include <string.h> 46 #endif 47 48 /* 49 * Convert a ctime(3) format string into a system format date. 50 * Return the date thus calculated. 51 * 52 * Return -1 if the string is not in ctime format. 53 */ 54 55 /* 56 * Offsets into the ctime string to various parts. 57 */ 58 59 #define E_MONTH 4 60 #define E_DAY 8 61 #define E_HOUR 11 62 #define E_MINUTE 14 63 #define E_SECOND 17 64 #define E_YEAR 20 65 66 static int lookup __P((char *)); 67 68 69 time_t 70 unctime(str) 71 char *str; 72 { 73 struct tm then; 74 char dbuf[26]; 75 76 (void) strncpy(dbuf, str, sizeof(dbuf) - 1); 77 dbuf[sizeof(dbuf) - 1] = '\0'; 78 dbuf[E_MONTH+3] = '\0'; 79 if ((then.tm_mon = lookup(&dbuf[E_MONTH])) < 0) 80 return (-1); 81 then.tm_mday = atoi(&dbuf[E_DAY]); 82 then.tm_hour = atoi(&dbuf[E_HOUR]); 83 then.tm_min = atoi(&dbuf[E_MINUTE]); 84 then.tm_sec = atoi(&dbuf[E_SECOND]); 85 then.tm_year = atoi(&dbuf[E_YEAR]) - 1900; 86 then.tm_isdst = -1; 87 return(mktime(&then)); 88 } 89 90 static char months[] = 91 "JanFebMarAprMayJunJulAugSepOctNovDec"; 92 93 static int 94 lookup(str) 95 char *str; 96 { 97 register char *cp, *cp2; 98 99 for (cp = months, cp2 = str; *cp != '\0'; cp += 3) 100 if (strncmp(cp, cp2, 3) == 0) 101 return((cp-months) / 3); 102 return(-1); 103 } 104