/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1986 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* from UCB 4.4 83/09/25 */
/*
* 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.
*
* Sorry, I don't know all the names.
*/
static struct zone {
int offset;
char *stdzone;
char *dlzone;
} zonetab[] = {
-12*60, "NZST", "NZDT", /* New Zealand */
-10*60, "EST", "EST", /* Aust: Eastern */
-10*60+30, "CST", "CST", /* Aust: Central */
-8*60, "WST", 0, /* Aust: Western */
-9*60, "JST", 0, /* Japanese */
0*60, "GMT", "BST", /* Great Britain and Eire */
-1*60, "MET", "MET DST", /* Middle European */
-2*60, "EET", "EET DST", /* Eastern European */
3*60+30, "NST", "NDT", /* Newfoundland */
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 */
9*60, "YST", "YDT", /* Yukon */
10*60, "HST", "HDT", /* Hawaiian */
-1
};
char *timezone(zone, dst)
{
register struct zone *zp;
static char czone[10];
char *sign;
register char *p, *q;
char *getenv(), *index();
if (p = getenv("TZNAME")) {
if (q = index(p, ',')) {
if (dst)
return(++q);
else {
*q = '\0';
strncpy(czone, p, sizeof(czone)-1);
czone[sizeof(czone)-1] = '\0';
*q = ',';
return (czone);
}
}
return(p);
}
for (zp=zonetab; zp->offset!=-1; zp++)
if (zp->offset==zone) {
if (dst && zp->dlzone)
return(zp->dlzone);
if (!dst && zp->stdzone)
return(zp->stdzone);
}
if (zone<0) {
zone = -zone;
sign = "+";
} else
sign = "-";
sprintf(czone, "GMT%s%d:%02d", sign, zone/60, zone%60);
return(czone);
}