68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
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/*
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* Copyright 1991 - 1994, Julianne Frances Haugh and Chip Rosenthal
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "rcsid.h"
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RCSID("$Id: tz.c,v 1.4 1998/01/29 23:22:36 marekm Exp $")
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#include <stdio.h>
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#include <string.h>
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#include "defines.h"
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#include "getdef.h"
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/*
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* tz - return local timezone name
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*
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* tz() determines the name of the local timezone by reading the
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* contents of the file named by ``fname''.
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*/
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char *
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tz(const char *fname)
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{
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FILE *fp = 0;
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static char tzbuf[BUFSIZ];
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const char *def_tz;
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if ((fp = fopen(fname,"r")) == NULL ||
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fgets (tzbuf, sizeof (tzbuf), fp) == NULL) {
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if (! (def_tz = getdef_str ("ENV_TZ")) || def_tz[0] == '/')
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def_tz = "TZ=CST6CDT";
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strcpy (tzbuf, def_tz);
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} else
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tzbuf[strlen(tzbuf) - 1] = '\0';
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if (fp)
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(void) fclose(fp);
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return tzbuf;
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}
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