X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Fdtime.c;h=1d3bc060f33907d4a885fd80c1bbfb2baa808a4b;hp=0c229eea346fc6aebe82e51509ef7938d02396d9;hb=f78e7c6e6e616cc4ff2bee8a726365fafef2d8ce;hpb=a485ed478abbd599d8c9aab48934e7a26733ecb1 diff --git a/sbr/dtime.c b/sbr/dtime.c index 0c229ee..1d3bc06 100644 --- a/sbr/dtime.c +++ b/sbr/dtime.c @@ -1,43 +1,22 @@ /* - * dtime.c -- time/date routines - * - * This code is Copyright (c) 2002, by the authors of nmh. See the - * COPYRIGHT file in the root directory of the nmh distribution for - * complete copyright information. - */ - +** dtime.c -- time/date routines +** +** This code is Copyright (c) 2002, by the authors of nmh. See the +** COPYRIGHT file in the root directory of the nmh distribution for +** complete copyright information. +*/ + +#include #include /* for snprintf() */ -#include #include -#if !defined(HAVE_STRUCT_TM_TM_GMTOFF) && !defined(HAVE_TZSET) -# include -#endif - -#ifdef TIME_WITH_SYS_TIME -# include -# include -#else -# ifdef HAVE_SYS_TIME_H -# include -# else -# include -# endif -#endif - -#if !defined(HAVE_STRUCT_TM_TM_GMTOFF) && defined(HAVE_TZSET) -extern int daylight; +#if !defined(HAVE_STRUCT_TM_TM_GMTOFF) extern long timezone; -extern char *tzname[]; -#endif - -#ifndef abs -# define abs(a) (a >= 0 ? a : -a) #endif /* - * The number of days in the year, accounting for leap years - */ +** The number of days in the year, accounting for leap years +*/ #define dysize(y) \ (((y) % 4) ? 365 : (((y) % 100) ? 366 : (((y) % 400) ? 365 : 366))) @@ -60,93 +39,43 @@ char *tw_ldotw[] = { "Saturday", NULL }; -struct zone { - char *std; - char *dst; - int shift; -}; - -static struct zone zones[] = { - { "GMT", "BST", 0 }, - { "EST", "EDT", -5 }, - { "CST", "CDT", -6 }, - { "MST", "MDT", -7 }, - { "PST", "PDT", -8 }, -#if 0 -/* RFC1123 specifies do not use military TZs */ - { "A", NULL, -1 }, - { "B", NULL, -2 }, - { "C", NULL, -3 }, - { "D", NULL, -4 }, - { "E", NULL, -5 }, - { "F", NULL, -6 }, - { "G", NULL, -7 }, - { "H", NULL, -8 }, - { "I", NULL, -9 }, - { "K", NULL, -10 }, - { "L", NULL, -11 }, - { "M", NULL, -12 }, - { "N", NULL, 1 }, -#ifndef HUJI - { "O", NULL, 2 }, -#else - { "JST", "JDT", 2 }, -#endif - { "P", NULL, 3 }, - { "Q", NULL, 4 }, - { "R", NULL, 5 }, - { "S", NULL, 6 }, - { "T", NULL, 7 }, - { "U", NULL, 8 }, - { "V", NULL, 9 }, - { "W", NULL, 10 }, - { "X", NULL, 11 }, - { "Y", NULL, 12 }, -#endif - { NULL, NULL, 0 } -}; - static int dmsize[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; /* - * Get current time (adjusted for local time - * zone and daylight savings time) expressed - * as nmh "broken-down" time structure. - */ +** Get current time (adjusted for local time +** zone and daylight savings time) expressed +** as nmh "broken-down" time structure. +*/ struct tws * -dlocaltimenow (void) +dlocaltimenow(void) { time_t clock; - time (&clock); - return dlocaltime (&clock); + time(&clock); + return dlocaltime(&clock); } /* - * Take clock value and return pointer to nmh time structure - * containing "broken-down" time. The time is adjusted for - * local time zone and daylight savings time. - */ +** Take clock value and return pointer to nmh time structure +** containing "broken-down" time. The time is adjusted for +** local time zone and daylight savings time. +*/ struct tws * -dlocaltime (time_t *clock) +dlocaltime(time_t *clock) { static struct tws tw; struct tm *tm; -#if !defined(HAVE_STRUCT_TM_TM_GMTOFF) && !defined(HAVE_TZSET) - struct timeb tb; -#endif - if (!clock) return NULL; - tm = localtime (clock); + tm = localtime(clock); tw.tw_sec = tm->tm_sec; tw.tw_min = tm->tm_min; @@ -154,10 +83,7 @@ dlocaltime (time_t *clock) tw.tw_mday = tm->tm_mday; tw.tw_mon = tm->tm_mon; - /* - * tm_year is always "year - 1900". - * So we correct for this. - */ + /* tm_year is always "year - 1900". So we correct for this. */ tw.tw_year = tm->tm_year + 1900; tw.tw_wday = tm->tm_wday; tw.tw_yday = tm->tm_yday; @@ -171,13 +97,8 @@ dlocaltime (time_t *clock) if (tm->tm_isdst) /* if DST is in effect */ tw.tw_zone -= 60; /* reset to normal offset */ #else -# ifdef HAVE_TZSET tzset(); tw.tw_zone = -(timezone / 60); -# else - ftime (&tb); - tw.tw_zone = -tb.timezone; -# endif #endif tw.tw_flags &= ~TW_SDAY; @@ -192,13 +113,13 @@ dlocaltime (time_t *clock) /* - * Take clock value and return pointer to nmh time - * structure containing "broken-down" time. Time is - * expressed in UTC (Coordinated Universal Time). - */ +** Take clock value and return pointer to nmh time +** structure containing "broken-down" time. Time is +** expressed in UTC (Coordinated Universal Time). +*/ struct tws * -dgmtime (time_t *clock) +dgmtime(time_t *clock) { static struct tws tw; struct tm *tm; @@ -206,7 +127,7 @@ dgmtime (time_t *clock) if (!clock) return NULL; - tm = gmtime (clock); + tm = gmtime(clock); tw.tw_sec = tm->tm_sec; tw.tw_min = tm->tm_min; @@ -214,10 +135,7 @@ dgmtime (time_t *clock) tw.tw_mday = tm->tm_mday; tw.tw_mon = tm->tm_mon; - /* - * tm_year is always "year - 1900" - * So we correct for this. - */ + /* tm_year is always "year - 1900". So we correct for this. */ tw.tw_year = tm->tm_year + 1900; tw.tw_wday = tm->tm_wday; tw.tw_yday = tm->tm_yday; @@ -240,21 +158,21 @@ dgmtime (time_t *clock) /* - * Using a nmh "broken-down" time structure, - * produce a 26-byte date/time string, such as - * - * Tue Jan 14 17:49:03 1992\n\0 - */ +** Using a nmh "broken-down" time structure, +** produce a 26-byte date/time string, such as +** +** Tue Jan 14 17:49:03 1992\n\0 +*/ char * -dctime (struct tws *tw) +dctime(struct tws *tw) { static char buffer[26]; if (!tw) return NULL; - snprintf (buffer, sizeof(buffer), "%.3s %.3s %02d %02d:%02d:%02d %.4d\n", + snprintf(buffer, sizeof(buffer), "%.3s %.3s %02d %02d:%02d:%02d %.4d\n", tw_dotw[tw->tw_wday], tw_moty[tw->tw_mon], tw->tw_mday, tw->tw_hour, tw->tw_min, tw->tw_sec, tw->tw_year < 100 ? tw->tw_year + 1900 : tw->tw_year); @@ -264,59 +182,47 @@ dctime (struct tws *tw) /* - * Produce a date/time string of the form - * - * Mon, 16 Jun 1992 15:30:48 -700 (or) - * Mon, 16 Jun 1992 15:30:48 EDT - * - * for the current time, as specified by rfc822. - * The first form is required by rfc1123. - */ - +** Produce a date/time string of the form +** +** Mon, 16 Jun 1992 15:30:48 -0700 +** +** for the current time, as specified by rfc822 and rfc1123. +*/ char * -dtimenow (int alpha_timezone) +dtimenow(void) { time_t clock; - time (&clock); - return dtime (&clock, alpha_timezone); + time(&clock); + return dtime(&clock); } /* - * Using a local calendar time value, produce - * a date/time string of the form - * - * Mon, 16 Jun 1992 15:30:48 -700 (or) - * Mon, 16 Jun 1992 15:30:48 EDT - * - * as specified by rfc822. The first form is required - * by rfc1123 for outgoing messages. - */ - +** Using a local calendar time value, produce +** a date/time string of the form +** +** Mon, 16 Jun 1992 15:30:48 -0700 +** +** as specified by rfc822 and rfc1123. +*/ char * -dtime (time_t *clock, int alpha_timezone) +dtime(time_t *clock) { - if (alpha_timezone) - /* use alpha-numeric timezones */ - return dasctime (dlocaltime (clock), TW_NULL); - else - /* use numeric timezones */ - return dasctime (dlocaltime (clock), TW_ZONE); + return dasctime(dlocaltime(clock)); } /* - * Using a nmh "broken-down" time structure, produce - * a date/time string of the form - * - * Mon, 16 Jun 1992 15:30:48 -0700 - * - * as specified by rfc822 and rfc1123. - */ - +** Using a nmh "broken-down" time structure, produce +** a date/time string of the form +** +** Mon, 16 Jun 1992 15:30:48 -0700 +** +** as specified by rfc822 and rfc1123. +*/ char * -dasctime (struct tws *tw, int flags) +dasctime(struct tws *tw) { char buffer[80]; static char result[80]; @@ -328,7 +234,7 @@ dasctime (struct tws *tw, int flags) if ((tw->tw_flags & TW_SZONE) == TW_SZNIL) result[0] = '\0'; else - snprintf(result, sizeof(result), " %s", dtimezone(tw->tw_zone, tw->tw_flags | flags)); + snprintf(result, sizeof(result), " %s", dtimezone(tw->tw_zone, tw->tw_flags)); snprintf(buffer, sizeof(buffer), "%02d %s %0*d %02d:%02d:%02d%s", tw->tw_mday, tw_moty[tw->tw_mon], @@ -336,26 +242,24 @@ dasctime (struct tws *tw, int flags) tw->tw_hour, tw->tw_min, tw->tw_sec, result); if ((tw->tw_flags & TW_SDAY) == TW_SEXP) - snprintf (result, sizeof(result), "%s, %s", tw_dotw[tw->tw_wday], buffer); + snprintf(result, sizeof(result), "%s, %s", tw_dotw[tw->tw_wday], buffer); else if ((tw->tw_flags & TW_SDAY) == TW_SNIL) - strncpy (result, buffer, sizeof(result)); + strncpy(result, buffer, sizeof(result)); else - snprintf (result, sizeof(result), "%s (%s)", buffer, tw_dotw[tw->tw_wday]); + snprintf(result, sizeof(result), "%s (%s)", buffer, tw_dotw[tw->tw_wday]); return result; } /* - * Get the timezone for given offset - */ - +** Get the timezone for given offset as numeric value. +*/ char * -dtimezone (int offset, int flags) +dtimezone(int offset, int flags) { int hours, mins; - struct zone *z; static char buffer[10]; if (offset < 0) { @@ -366,36 +270,25 @@ dtimezone (int offset, int flags) hours = offset / 60; } - if (!(flags & TW_ZONE) && mins == 0) { -#if defined(HAVE_TZSET) && defined(HAVE_TZNAME) - tzset(); - return ((flags & TW_DST) ? tzname[1] : tzname[0]); -#else - for (z = zones; z->std; z++) - if (z->shift == hours) - return (z->dst && (flags & TW_DST) ? z->dst : z->std); -#endif - } - #ifdef ADJUST_NUMERIC_ONLY_TZ_OFFSETS_WRT_DST if (flags & TW_DST) hours += 1; #endif /* ADJUST_NUMERIC_ONLY_TZ_OFFSETS_WRT_DST */ - snprintf (buffer, sizeof(buffer), "%s%02d%02d", - offset < 0 ? "-" : "+", abs (hours), abs (mins)); + snprintf(buffer, sizeof(buffer), "%s%02d%02d", + offset < 0 ? "-" : "+", abs(hours), abs(mins)); return buffer; } /* - * Convert nmh time structure for local "broken-down" - * time to calendar time (clock value). This routine - * is based on the gtime() routine written by Steven Shafer - * at CMU. It was forwarded to MTR by Jay Lepreau at Utah-CS. - */ +** Convert nmh time structure for local "broken-down" +** time to calendar time (clock value). This routine +** is based on the gtime() routine written by Steven Shafer +** at CMU. It was forwarded to MTR by Jay Lepreau at Utah-CS. +*/ time_t -dmktime (struct tws *tw) +dmktime(struct tws *tw) { int i, sec, min, hour, mday, mon, year; time_t result; @@ -420,8 +313,8 @@ dmktime (struct tws *tw) year += 100; for (i = 1970; i < year; i++) - result += dysize (i); - if (dysize (year) == 366 && mon >= 3) + result += dysize(i); + if (dysize(year) == 366 && mon >= 3) result++; while (--mon) result += dmsize[mon - 1]; @@ -438,13 +331,13 @@ dmktime (struct tws *tw) /* - * Simple calculation of day of the week. Algorithm - * used is Zeller's congruence. We assume that - * if tw->tw_year < 100, then the century = 19. - */ +** Simple calculation of day of the week. Algorithm +** used is Zeller's congruence. We assume that +** if tw->tw_year < 100, then the century = 19. +*/ void -set_dotw (struct tws *tw) +set_dotw(struct tws *tw) { int month, day, year, century; @@ -471,43 +364,29 @@ set_dotw (struct tws *tw) /* - * Copy nmh time structure - */ +** Copy nmh time structure +*/ void -twscopy (struct tws *tb, struct tws *tw) +twscopy(struct tws *tb, struct tws *tw) { *tb = *tw; /* struct copy */ - -#if 0 - tb->tw_sec = tw->tw_sec; - tb->tw_min = tw->tw_min; - tb->tw_hour = tw->tw_hour; - tb->tw_mday = tw->tw_mday; - tb->tw_mon = tw->tw_mon; - tb->tw_year = tw->tw_year; - tb->tw_wday = tw->tw_wday; - tb->tw_yday = tw->tw_yday; - tb->tw_zone = tw->tw_zone; - tb->tw_clock = tw->tw_clock; - tb->tw_flags = tw->tw_flags; -#endif } /* - * Compare two nmh time structures - */ +** Compare two nmh time structures +*/ int -twsort (struct tws *tw1, struct tws *tw2) +twsort(struct tws *tw1, struct tws *tw2) { time_t c1, c2; if (tw1->tw_clock == 0) - dmktime (tw1); + dmktime(tw1); if (tw2->tw_clock == 0) - dmktime (tw2); + dmktime(tw2); return ((c1 = tw1->tw_clock) > (c2 = tw2->tw_clock) ? 1 : c1 == c2 ? 0 : -1);