c1920558b3
- Move CSRG IDs into __SCCSID(). - When a file has been copied, consistently use 'From: <tag>' for strings referencing the version of the source file copied from in the license block comment. - Some of the 'From:' tags were using $FreeBSD$ that was being expanded on each checkout. Fix those to hardcode the FreeBSD tag from the file that was copied at the time of the copy. - When multiple strings are present list them in "chronological" order, so CSRG (__SCCSID) before FreeBSD (__FBSDID). If a file came from OtherBSD and contains a CSRG ID from the OtherBSD file, use the order CSRG -> OtherBSD -> FreeBSD. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D15831
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1987, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__SCCSID("@(#)timezone.c 8.1 (Berkeley) 6/4/93");
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#define TZ_MAX_CHARS 255
|
|
|
|
char *_tztab(int, int);
|
|
|
|
/*
|
|
* timezone --
|
|
* The arguments are the number of minutes of time you are westward
|
|
* from Greenwich and whether DST is in effect. It returns a string
|
|
* giving the name of the local timezone. Should be replaced, in the
|
|
* application code, by a call to localtime.
|
|
*/
|
|
|
|
static char czone[TZ_MAX_CHARS]; /* space for zone name */
|
|
|
|
char *
|
|
timezone(int zone, int dst)
|
|
{
|
|
char *beg,
|
|
*end;
|
|
|
|
if ( (beg = getenv("TZNAME")) ) { /* set in environment */
|
|
if ((end = strchr(beg, ','))) { /* "PST,PDT" */
|
|
if (dst)
|
|
return(++end);
|
|
*end = '\0';
|
|
(void)strncpy(czone,beg,sizeof(czone) - 1);
|
|
czone[sizeof(czone) - 1] = '\0';
|
|
*end = ',';
|
|
return(czone);
|
|
}
|
|
return(beg);
|
|
}
|
|
return(_tztab(zone,dst)); /* default: table or created zone */
|
|
}
|
|
|
|
static struct zone {
|
|
int offset;
|
|
char *stdzone;
|
|
char *dlzone;
|
|
} zonetab[] = {
|
|
{-1*60, "MET", "MET DST"}, /* Middle European */
|
|
{-2*60, "EET", "EET DST"}, /* Eastern European */
|
|
{4*60, "AST", "ADT"}, /* Atlantic */
|
|
{5*60, "EST", "EDT"}, /* Eastern */
|
|
{6*60, "CST", "CDT"}, /* Central */
|
|
{7*60, "MST", "MDT"}, /* Mountain */
|
|
{8*60, "PST", "PDT"}, /* Pacific */
|
|
#ifdef notdef
|
|
/* there's no way to distinguish this from WET */
|
|
{0, "GMT", 0}, /* Greenwich */
|
|
#endif
|
|
{0*60, "WET", "WET DST"}, /* Western European */
|
|
{-10*60,"EST", "EST"}, /* Aust: Eastern */
|
|
{-10*60+30,"CST", "CST"}, /* Aust: Central */
|
|
{-8*60, "WST", 0}, /* Aust: Western */
|
|
{-1}
|
|
};
|
|
|
|
/*
|
|
* _tztab --
|
|
* check static tables or create a new zone name; broken out so that
|
|
* we can make a guess as to what the zone is if the standard tables
|
|
* aren't in place in /etc. DO NOT USE THIS ROUTINE OUTSIDE OF THE
|
|
* STANDARD LIBRARY.
|
|
*/
|
|
char *
|
|
_tztab(int zone, int dst)
|
|
{
|
|
struct zone *zp;
|
|
char sign;
|
|
|
|
for (zp = zonetab; zp->offset != -1;++zp) /* static tables */
|
|
if (zp->offset == zone) {
|
|
if (dst && zp->dlzone)
|
|
return(zp->dlzone);
|
|
if (!dst && zp->stdzone)
|
|
return(zp->stdzone);
|
|
}
|
|
|
|
if (zone < 0) { /* create one */
|
|
zone = -zone;
|
|
sign = '+';
|
|
}
|
|
else
|
|
sign = '-';
|
|
(void)snprintf(czone, sizeof(czone),
|
|
"GMT%c%d:%02d",sign,zone / 60,zone % 60);
|
|
return(czone);
|
|
}
|