Mercurial > dovecot > original-hg > dovecot-1.2
view src/lib/utc-offset.c @ 9235:8e66ca02b6f9 HEAD
utc_offset() was broken with year's first/last day if struct tm.tm_gmtoff didn't exist.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Tue, 21 Jul 2009 15:18:49 -0400 |
parents | b9faf4db2a9f |
children | 00cd9aacd03c |
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/* Copyright (c) 2002-2009 Dovecot authors, see the included COPYING file */ #include "lib.h" #include "utc-offset.h" #include <sys/time.h> int utc_offset(struct tm *tm, time_t t ATTR_UNUSED) { #ifdef HAVE_TM_GMTOFF return (int) (tm->tm_gmtoff/60); #else struct tm ltm, gtm; int offset; /* gmtime() overwrites tm, so we need to copy it elsewhere */ ltm = *tm; tm = gmtime(&t); gtm = *tm; /* max offset of 24 hours */ if ((ltm.tm_yday < gtm.tm_yday && ltm.tm_year == gtm.tm_year) || ltm.tm_year < gtm.tm_year) offset = -24 * 60; else if ((ltm.tm_yday > gtm.tm_yday && ltm.tm_year == gtm.tm_year) || ltm.tm_year > gtm.tm_year) offset = 24 * 60; else offset = 0; offset += (ltm.tm_hour - gtm.tm_hour) * 60; offset += (ltm.tm_min - gtm.tm_min); /* restore overwritten tm */ *tm = ltm; return offset; #endif }