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#include <unistd.h>
#include <fcntl.h>
#include "parselib.h"
static struct state s;
static int parse(unsigned char *x)
{return (x[0]<<24) | (x[1]<<16) | (x[2]<<8) | x[3];}
static time_t time_offset(time_t *t, int forward) {
unsigned char *T = (unsigned char *)s.buffirst, *tmp,*x;
size_t L = s.buflen;
time_t i, k, res, tzh_timecnt;
if (!T || L<44) return 0;
tzh_timecnt = parse(T+32);
tmp=T+44;
x=tmp+tzh_timecnt*4;
for (i=tzh_timecnt-1; 0<=i; --i) {
k = parse(tmp+i*4);
if (forward) if (*t < k) continue;
res = parse(x +tzh_timecnt +6*(unsigned char)x[i]);
if (forward) return res;
else
if (k+res <= *t) return -res;
}
return 0;
}
time_t get_tz(time_t *t, int forward) /*EXTRACT_INCL*/{
if (forward==-1) {
__end_parse(&s);
s.cur=0;
return 0;
}
if (!s.cur) {
__prepare_parse("/etc/localtime",&s);
s.cur=1;
}
return time_offset(t,forward);
}
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