68 lines
1 KiB
C
68 lines
1 KiB
C
#include <u.h>
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#include <libc.h>
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enum {
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Nsec = 1000*1000*1000,
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};
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void
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usage(void)
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{
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fprint(2, "usage: date [-itunm] [-f fmt] [seconds]\n");
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exits("usage");
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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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int nflg, uflg;
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char *fmt;
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vlong s, ns;
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Tzone *tz;
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Tm tm;
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nflg = 0;
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uflg = 0;
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tz = nil;
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fmt = "WW MMM _D hh:mm:ss ZZZ YYYY";
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tmfmtinstall();
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ARGBEGIN{
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case 'n': nflg = 1; break;
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case 'u': uflg = 1; break;
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case 't': fmt = "YYYY-MM-DDThh:mm:ssZZ"; break;
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case 'i': fmt = "YYYY-MM-DD"; break;
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case 'f': fmt = EARGF(usage()); break;
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default: usage();
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}ARGEND
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s = 0;
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ns = 0;
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switch(argc) {
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case 0:
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ns = nsec();
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s = ns/Nsec;
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ns = ns%Nsec;
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break;
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case 1:
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s = strtoll(argv[0], nil, 0);
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ns = 0;
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break;
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default:
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usage();
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break;
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}
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if(!uflg && (tz = tzload("local")) == nil)
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sysfatal("timezone: %r");
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if(tmtimens(&tm, s, ns, tz) == nil)
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sysfatal("now: %r");
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if(nflg)
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print("%lld\n", tmnorm(&tm));
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else
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if(print("%τ\n", tmfmt(&tm, fmt)) == -1)
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sysfatal("%r");
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exits(0);
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}
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