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 static char sccsid[] = "@(#)unctime.c 8.2 (Berkeley) 6/14/94"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 40 #include <stdio.h> 41 #include <time.h> 42 #ifdef __STDC__ 43 #include <stdlib.h> 44 #include <string.h> 45 #endif 46 47 #ifndef __P 48 #include <sys/cdefs.h> 49 #endif 50 51 /* 52 * Convert a ctime(3) format string into a system format date. 53 * Return the date thus calculated. 54 * 55 * Return -1 if the string is not in ctime format. 56 */ 57 58 /* 59 * Offsets into the ctime string to various parts. 60 */ 61 62 #define E_MONTH 4 63 #define E_DAY 8 64 #define E_HOUR 11 65 #define E_MINUTE 14 66 #define E_SECOND 17 67 #define E_YEAR 20 68 69 static int lookup __P((char *)); 70 71 72 time_t 73 unctime(str) 74 char *str; 75 { 76 struct tm then; 77 char dbuf[26]; 78 79 (void) strncpy(dbuf, str, sizeof(dbuf) - 1); 80 dbuf[sizeof(dbuf) - 1] = '\0'; 81 dbuf[E_MONTH+3] = '\0'; 82 if ((then.tm_mon = lookup(&dbuf[E_MONTH])) < 0) 83 return (-1); 84 then.tm_mday = atoi(&dbuf[E_DAY]); 85 then.tm_hour = atoi(&dbuf[E_HOUR]); 86 then.tm_min = atoi(&dbuf[E_MINUTE]); 87 then.tm_sec = atoi(&dbuf[E_SECOND]); 88 then.tm_year = atoi(&dbuf[E_YEAR]) - 1900; 89 then.tm_isdst = -1; 90 return(mktime(&then)); 91 } 92 93 static char months[] = 94 "JanFebMarAprMayJunJulAugSepOctNovDec"; 95 96 static int 97 lookup(str) 98 char *str; 99 { 100 register char *cp, *cp2; 101 102 for (cp = months, cp2 = str; *cp != '\0'; cp += 3) 103 if (strncmp(cp, cp2, 3) == 0) 104 return((cp-months) / 3); 105 return(-1); 106 } 107