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#include <u.h>
#include <libc.h>
#include <ctype.h>
char *knownfmt[] = {
/* asctime */
"WW MMM DD hh:mm:ss ?Z YYYY",
/* RFC3339 */
"YYYY-MM-DD[T]hh:mm:ss[Z]?Z",
"YYYY-MM-DD[T]hh:mm:ss[Z]?Z",
"YYYY-MM-DD[T]hh:mm:ss ?Z",
"YYYY-MM-DD[T]hh:mm:ss?Z",
nil,
};
char *datefmt[] = {
/* RFC5322 */
"?W ?DD ?MMM ?YYYY",
"?W, DD-?MM-YY",
/* RFC822/RFC2822 */
"DD MMM YYYY",
"DD MMM YY",
/* RFC850 */
"WW, DD-MMM-YY",
/* RFC1123 */
"WWW, DD MMM YYYY",
/* RFC 3339 and human-readable variants */
"YYYY-MM-DD",
"YYYY-MM-DD [@] ",
/* random formats */
"?W ?MMM ?DD ?YYYY",
"?MMM ?DD ?YYYY",
"?DD ?MM ?YYYY",
"MMM ?DD ?YYYY",
"YYYY ?MM ?DD",
"YYYY ?DD ?MM",
"YYYY/MM?/DD?",
"MMM YYYY ?DD",
"?DD YYYY MMM",
"MM/DD/YYYY",
nil
};
char *timefmt[] = {
" hh:mm:ss",
" hh:mm",
" hh",
" hh:mm:ss ?A",
" hh:mm ?A",
" hh ?A",
"",
nil,
};
char *zonefmt[] = {
" ?Z",
"",
nil,
};
static int
nojunk(char *p)
{
while(isspace(*p))
p++;
if(*p == '\0')
return 1;
werrstr("trailing junk");
return 0;
}
static void
usage(void)
{
fprint(2, "usage: %s [-f fmt] date-time...\n", argv0);
exits("usage");
}
/*
* seconds absolute_date ... - convert absolute_date to seconds since epoch
*/
void
main(int argc, char **argv)
{
char **f, **df, **tf, **zf, *fmt, *ep, buf[256];
Tzone *tz;
Tm tm;
int i;
fmt = nil;
ARGBEGIN{
case 'f':
fmt = EARGF(usage());
break;
default:
usage();
}ARGEND;
if((tz = tzload("local")) == nil)
sysfatal("bad local time: %r");
for(i = 0; i < argc; i++){
if(fmt != nil){
if(tmparse(&tm, fmt, argv[i], tz, &ep) && nojunk(ep))
goto Found;
}else{
for(f = knownfmt; *f != nil; f++)
if(tmparse(&tm, *f, argv[i], tz, &ep) != nil && nojunk(ep))
goto Found;
for(df = datefmt; *df; df++)
for(tf = timefmt; *tf; tf++)
for(zf = zonefmt; *zf; zf++){
snprint(buf, sizeof(buf), "%s%s%s", *df, *tf, *zf);
if(tmparse(&tm, buf, argv[i], tz, &ep) != nil && nojunk(ep))
goto Found;
}
}
sysfatal("tmparse: %r");
Found:
print("%lld\n", tmnorm(&tm));
}
exits(nil);
}
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