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Diffstat (limited to 'src/vmstime.c')
| -rw-r--r-- | src/vmstime.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/src/vmstime.c b/src/vmstime.c deleted file mode 100644 index 08c0a982609..00000000000 --- a/src/vmstime.c +++ /dev/null @@ -1,376 +0,0 @@ -/* Time support for VMS. - Copyright (C) 1993 Free Software Foundation. - -This file is part of GNU Emacs. - -GNU Emacs is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Emacs is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Emacs; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <config.h> -#include "vmstime.h" - -long timezone=0; -int daylight=0; - -static char tzname_default[20]=""; -static char tzname_dst[20]=""; - -char *tzname[2] = { tzname_default, tzname_dst }; - -static long internal_daylight=0; -static char daylight_set=0; - -static long read_time(const char *nptr, const char **endptr, - int sign_allowed_p) -{ - int t; - - *endptr = nptr; - - /* This routine trusts the user very much, and does no checks! - The only exception is this: */ - if (!sign_allowed_p && (*nptr == '-' || *nptr == '+')) - return 0; - - t = strtol(*endptr, endptr, 10) * 3600; - if (**endptr != ':' || **endptr == '+' || **endptr == '-') - return t; - (*endptr)++; - - t = t + strtol(*endptr, endptr, 10) * 60; - if (**endptr != ':' || **endptr == '+' || **endptr == '-') - return t; - (*endptr)++; - - return t + strtol(*endptr, endptr, 10); -} - -static void read_dst_time(const char *nptr, const char **endptr, - int *m, int *n, int *d, - int *leap_p) -{ - time_t bintim = time(0); - struct tm *lc = localtime(&bintim); - - *leap_p = 1; - *m = 0; /* When m and n are 0, a Julian */ - *n = 0; /* date has been inserted in d */ - - switch(*nptr) - { - case 'M': - { - /* This routine counts on the user to have specified "Mm.n.d", - where 1 <= n <= 5, 1 <= m <= 12, 0 <= d <= 6 */ - - *m = strtol(++nptr, endptr, 10); - (*endptr)++; /* Skip the dot */ - *n = strtol(*endptr, endptr, 10); - (*endptr)++; /* Skip the dot */ - *d = strtol(*endptr, endptr, 10); - - return; - } - case 'J': - *leap_p = 0; /* Never count with leap years */ - default: /* trust the user to have inserted a number! */ - *d = strtol(++nptr, endptr, 10); - return; - } -} - -struct vms_vectim -{ - short year, month, day, hour, minute, second, centi_second; -}; -static void find_dst_time(int m, int n, long d, - int hour, int minute, int second, - int leap_p, - long vms_internal_time[2]) -{ - long status = SYS$GETTIM(vms_internal_time); - struct vms_vectim vms_vectime; - status = SYS$NUMTIM(&vms_vectime, vms_internal_time); - - if (m == 0 && n == 0) - { - long tmp_vms_internal_time[2][2]; - long day_of_year; - long tmp_operation = LIB$K_DAY_OF_YEAR; - - status = LIB$CVT_FROM_INTERNAL_TIME(&tmp_operation, &day_of_year, - vms_internal_time); - - vms_vectime.month = 2; - vms_vectime.day = 29; - status = LIB$CVT_VECTIM(&vms_vectime, tmp_vms_internal_time[0]); - if (status & 1) /* This is a leap year */ - { - if (!leap_p && d > 59) - d ++; /* If we don't count with 29th Feb, - and this is a leap year, count up, - to make day 60 really become the - 1st March. */ - } - /* 1st January, at midnight */ - vms_vectime.month = 1; - vms_vectime.day = 1; - vms_vectime.hour = hour; - vms_vectime.minute = minute; - vms_vectime.second = second; - vms_vectime.centi_second = 0; - status = LIB$CVT_VECTIM(&vms_vectime, tmp_vms_internal_time[0]); - tmp_operation = LIB$K_DELTA_DAYS; - status = LIB$CVT_TO_INTERNAL_TIME(&tmp_operation, &d, - tmp_vms_internal_time[1]); - /* now, tmp_vms_interval_time[0] contains 1st Jan, 00:00:00, - and tmp_vms_interval_time[1] contains delta time +d days. - Let's just add them together */ - status = LIB$ADD_TIMES(tmp_vms_internal_time[0], - tmp_vms_internal_time[1], - vms_internal_time); - } - else - { - long tmp_vms_internal_time[2]; - long day_of_week; - long tmp_operation = LIB$K_DAY_OF_YEAR; - - if (d == 0) /* 0 is Sunday, which isn't compatible with VMS, - where day_of_week is 1 -- 7, and 1 is Monday */ - { - d = 7; /* So a simple conversion is required */ - } - vms_vectime.month = m; - vms_vectime.day = 1; - vms_vectime.hour = hour; - vms_vectime.minute = minute; - vms_vectime.second = second; - vms_vectime.centi_second = 0; - status = LIB$CVT_VECTIM(&vms_vectime, tmp_vms_internal_time); - tmp_operation = LIB$K_DAY_OF_WEEK; - status = LIB$CVT_FROM_INTERNAL_TIME(&tmp_operation, &day_of_week, - tmp_vms_internal_time); - d -= day_of_week; - if (d < 0) - { - d += 7; - } - vms_vectime.day += (n-1)*7 + d; - status = LIB$CVT_VECTIM(&vms_vectime, vms_internal_time); - if (!(status & 1)) - { - vms_vectime.day -= 7; /* n was probably 5 */ - status = LIB$CVT_VECTIM(&vms_vectime, vms_internal_time); - } - } -} - -static cmp_vms_internal_times(long vms_internal_time1[2], - long vms_internal_time2[2]) -{ - if (vms_internal_time1[1] < vms_internal_time2[1]) - return -1; - else - if (vms_internal_time1[1] > vms_internal_time2[1]) - return 1; - - if (vms_internal_time1[0] < vms_internal_time2[0]) - return -1; - else - if (vms_internal_time1[0] > vms_internal_time2[0]) - return 1; - - return 0; -} - -/* -------------------------- Global routines ------------------------------ */ - -#ifdef tzset -#undef tzset -#endif -void sys_tzset() -{ - char *TZ; - char *p, *q; - - if (daylight_set) - return; - - daylight = 0; - - if ((TZ = getenv("TZ")) == 0) - return; - - p = TZ; - q = tzname[0]; - - while(*p != '\0' - && (*p <'0' || *p > '9') && *p != '-' && *p != '+' && *p != ',') - *q++ = *p++; - *q = '\0'; - - /* This is special for VMS, so I don't care if it doesn't exist anywhere - else */ - - timezone = read_time(p, &p, 1); - - q = tzname[1]; - - while(*p != '\0' - && (*p <'0' || *p > '9') && *p != '-' && *p != '+' && *p != ',') - *q++ = *p++; - *q = '\0'; - - if (*p != '-' && *p != '+' && !(*p >='0' && *p <= '9')) - internal_daylight = timezone - 3600; - else - internal_daylight = read_time(p, &p, 1); - - if (*p == ',') - { - int start_m; - int start_n; - int start_d; - int start_leap_p; - int start_hour=2, start_minute=0, start_second=0; - - p++; - read_dst_time(p, &p, &start_m, &start_n, &start_d, &start_leap_p); - if (*p == '/') - { - long tmp = read_time (++p, &p, 0); - start_hour = tmp / 3600; - start_minute = (tmp % 3600) / 60; - start_second = tmp % 60; - } - if (*p == ',') - { - int end_m; - int end_n; - int end_d; - int end_leap_p; - int end_hour=2, end_minute=0, end_second=0; - - p++; - read_dst_time(p, &p, &end_m, &end_n, &end_d, &end_leap_p); - if (*p == '/') - { - long tmp = read_time (++p, &p, 0); - end_hour = tmp / 3600; - end_minute = (tmp % 3600) / 60; - end_second = tmp % 60; - } - { - long vms_internal_time[3][2]; - find_dst_time(start_m, start_n, start_d, - start_hour, start_minute, start_second, - start_leap_p, - vms_internal_time[0]); - SYS$GETTIM(&vms_internal_time[1]); - find_dst_time(end_m, end_n, end_d, - end_hour, end_minute, end_second, - end_leap_p, - vms_internal_time[2]); - if (cmp_vms_internal_times(vms_internal_time[0], - vms_internal_time[1]) < 0 - && cmp_vms_internal_times(vms_internal_time[1], - vms_internal_time[2]) < 0) - daylight = 1; - } - } - } -} - -#ifdef localtime -#undef localtime -#endif -struct tm *sys_localtime(time_t *clock) -{ - struct tm *tmp = localtime(clock); - - sys_tzset(); - tmp->tm_isdst = daylight; - - return tmp; -} - -#ifdef gmtime -#undef gmtime -#endif -struct tm *sys_gmtime(time_t *clock) -{ - static struct tm gmt; - struct vms_vectim tmp_vectime; - long vms_internal_time[3][2]; - long tmp_operation = LIB$K_DELTA_SECONDS; - long status; - long tmp_offset; - char tmp_o_sign; - - sys_tzset(); - - if (daylight) - tmp_offset = internal_daylight; - else - tmp_offset = timezone; - - if (tmp_offset < 0) - { - tmp_o_sign = -1; - tmp_offset = -tmp_offset; - } - else - tmp_o_sign = 1; - - status = LIB$CVT_TO_INTERNAL_TIME(&tmp_operation, &tmp_offset, - vms_internal_time[1]); - status = SYS$GETTIM(vms_internal_time[0]); - if (tmp_o_sign < 0) - { - status = LIB$SUB_TIMES(vms_internal_time[0], - vms_internal_time[1], - vms_internal_time[2]); - } - else - { - status = LIB$ADD_TIMES(vms_internal_time[0], - vms_internal_time[1], - vms_internal_time[2]); - } - - status = SYS$NUMTIM(&tmp_vectime, vms_internal_time[2]); - gmt.tm_sec = tmp_vectime.second; - gmt.tm_min = tmp_vectime.minute; - gmt.tm_hour = tmp_vectime.hour; - gmt.tm_mday = tmp_vectime.day; - gmt.tm_mon = tmp_vectime.month - 1; - gmt.tm_year = tmp_vectime.year % 100; - - tmp_operation = LIB$K_DAY_OF_WEEK; - status = LIB$CVT_FROM_INTERNAL_TIME(&tmp_operation, - &gmt.tm_wday, - vms_internal_time[2]); - if (gmt.tm_wday == 7) gmt.tm_wday = 0; - - tmp_operation = LIB$K_DAY_OF_YEAR; - status = LIB$CVT_FROM_INTERNAL_TIME(&tmp_operation, - &gmt.tm_yday, - vms_internal_time[2]); - gmt.tm_yday--; - gmt.tm_isdst = daylight; - - return &gmt; -} - |