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