From 6e1fe29b4ca03073512ea558a9e0d1a26cf8947d Mon Sep 17 00:00:00 2001 From: Bill Joy Date: Tue, 14 Oct 1980 01:30:33 -0800 Subject: [PATCH] date and time created 80/10/13 17:30:33 by root SCCS-vsn: old/dump.4.1/unctime.c 1.1 SCCS-vsn: sbin/dump/unctime.c 1.1 --- usr/src/old/dump.4.1/unctime.c | 107 +++++++++++++++++++++++++++++++++ usr/src/sbin/dump/unctime.c | 107 +++++++++++++++++++++++++++++++++ 2 files changed, 214 insertions(+) create mode 100644 usr/src/old/dump.4.1/unctime.c create mode 100644 usr/src/sbin/dump/unctime.c diff --git a/usr/src/old/dump.4.1/unctime.c b/usr/src/old/dump.4.1/unctime.c new file mode 100644 index 0000000000..d12753642e --- /dev/null +++ b/usr/src/old/dump.4.1/unctime.c @@ -0,0 +1,107 @@ +static char *sccsid = "@(#)unctime.c 1.1 (Berkeley) %G%"; +#include +#include +/* + * Convert a ctime(3) format string into a system format date. + * Return the date thus calculated. + * + * Return -1 if the string is not in ctime format. + */ + +/* + * Offsets into the ctime string to various parts. + */ + +#define E_MONTH 4 +#define E_DAY 8 +#define E_HOUR 11 +#define E_MINUTE 14 +#define E_SECOND 17 +#define E_YEAR 20 + +time_t unctime(str) + char *str; +{ + struct tm then; + char dbuf[30]; + time_t emitl(); + + if (strlen(str) != 25) + str[25] = 0; + strcpy(dbuf, str); + dbuf[E_MONTH+3] = 0; + if ( (then.tm_mon = lookup(&dbuf[E_MONTH])) < 0) + return(-1);; + then.tm_mday = atoi(&dbuf[E_DAY]); + then.tm_hour = atoi(&dbuf[E_HOUR]); + then.tm_min = atoi(&dbuf[E_MINUTE]); + then.tm_sec = atoi(&dbuf[E_SECOND]); + then.tm_year = atoi(&dbuf[E_YEAR]) - 1900; + return(emitl(&then)); +} + +static char months[] = + "JanFebMarAprMayJunJulAugSepOctNovDec"; + +static +lookup(str) + char *str; +{ + register char *cp, *cp2; + + for (cp = months, cp2 = str; *cp != 0; cp += 3) + if (strncmp(cp, cp2, 3) == 0) + return((cp-months) / 3); + return(-1); +} +/* + * Routine to convert a localtime(3) format date back into + * a system format date. + * + * Use a binary search. + */ + +struct tm *localtime(); + +time_t emitl(dp) + struct tm *dp; +{ + time_t conv; + register int i, bit; + struct tm dcopy; + + dcopy = *dp; + dp = &dcopy; + conv = 0; + for (i = 31; i >= 0; i--) { + bit = 1 << i; + conv |= bit; + if (dcmp(localtime(&conv), dp) > 0) + conv &= ~bit; + } + return(conv); +} + +/* + * Compare two localtime dates, return result. + */ + +#define DECIDE(a) \ + if (dp->a > dp2->a) \ + return(1); \ + if (dp->a < dp2->a) \ + return(-1) + +static +dcmp(dp, dp2) + register struct tm *dp, *dp2; +{ + + DECIDE(tm_year); + DECIDE(tm_mon); + DECIDE(tm_mday); + DECIDE(tm_hour); + DECIDE(tm_min); + DECIDE(tm_sec); + return(0); +} diff --git a/usr/src/sbin/dump/unctime.c b/usr/src/sbin/dump/unctime.c new file mode 100644 index 0000000000..d12753642e --- /dev/null +++ b/usr/src/sbin/dump/unctime.c @@ -0,0 +1,107 @@ +static char *sccsid = "@(#)unctime.c 1.1 (Berkeley) %G%"; +#include +#include +/* + * Convert a ctime(3) format string into a system format date. + * Return the date thus calculated. + * + * Return -1 if the string is not in ctime format. + */ + +/* + * Offsets into the ctime string to various parts. + */ + +#define E_MONTH 4 +#define E_DAY 8 +#define E_HOUR 11 +#define E_MINUTE 14 +#define E_SECOND 17 +#define E_YEAR 20 + +time_t unctime(str) + char *str; +{ + struct tm then; + char dbuf[30]; + time_t emitl(); + + if (strlen(str) != 25) + str[25] = 0; + strcpy(dbuf, str); + dbuf[E_MONTH+3] = 0; + if ( (then.tm_mon = lookup(&dbuf[E_MONTH])) < 0) + return(-1);; + then.tm_mday = atoi(&dbuf[E_DAY]); + then.tm_hour = atoi(&dbuf[E_HOUR]); + then.tm_min = atoi(&dbuf[E_MINUTE]); + then.tm_sec = atoi(&dbuf[E_SECOND]); + then.tm_year = atoi(&dbuf[E_YEAR]) - 1900; + return(emitl(&then)); +} + +static char months[] = + "JanFebMarAprMayJunJulAugSepOctNovDec"; + +static +lookup(str) + char *str; +{ + register char *cp, *cp2; + + for (cp = months, cp2 = str; *cp != 0; cp += 3) + if (strncmp(cp, cp2, 3) == 0) + return((cp-months) / 3); + return(-1); +} +/* + * Routine to convert a localtime(3) format date back into + * a system format date. + * + * Use a binary search. + */ + +struct tm *localtime(); + +time_t emitl(dp) + struct tm *dp; +{ + time_t conv; + register int i, bit; + struct tm dcopy; + + dcopy = *dp; + dp = &dcopy; + conv = 0; + for (i = 31; i >= 0; i--) { + bit = 1 << i; + conv |= bit; + if (dcmp(localtime(&conv), dp) > 0) + conv &= ~bit; + } + return(conv); +} + +/* + * Compare two localtime dates, return result. + */ + +#define DECIDE(a) \ + if (dp->a > dp2->a) \ + return(1); \ + if (dp->a < dp2->a) \ + return(-1) + +static +dcmp(dp, dp2) + register struct tm *dp, *dp2; +{ + + DECIDE(tm_year); + DECIDE(tm_mon); + DECIDE(tm_mday); + DECIDE(tm_hour); + DECIDE(tm_min); + DECIDE(tm_sec); + return(0); +} -- 2.20.1