Add RFC2822 (email style) formatted dates to to date(1).
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@ -30,6 +30,9 @@ Report the date as ISO-8601 without time and timezone suffix.
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.TP
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.B -t
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Report the date as ISO-8601 with time and timezone suffix.
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.TP
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.B -m
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Report the date as an email compatible (RFC2822) time stamp.
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.PP
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The conversion from Greenwich Mean Time to local time depends on the
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.B $timezone
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@ -1,7 +1,16 @@
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#include <u.h>
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#include <libc.h>
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int uflg, nflg, iflg, tflg;
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static char *day[] = {
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
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};
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static char *mon[] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
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"Aug", "Sep", "Oct", "Nov", "Dec"
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};
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int uflg, nflg, iflg, tflg, mflg;
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char*
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isodate(Tm *t)
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@ -38,6 +47,23 @@ isotime(Tm *t)
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return d;
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}
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char *
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mailtime(Tm *t)
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{
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static char c[64];
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char *sgn;
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int off;
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sgn = "+";
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if(t->tzoff < 0)
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sgn = "";
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off = (t->tzoff/3600)*100 + (t->tzoff/60)%60;
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snprint(c, sizeof(c), "%s, %.2d %s %.4d %.2d:%.2d:%.2d %s%.4d",
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day[t->wday], t->mday, mon[t->mon], t->year + 1900,
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t->hour, t->min, t->sec, sgn, off);
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return c;
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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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@ -48,7 +74,8 @@ main(int argc, char *argv[])
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case 'u': uflg = 1; break;
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case 't': tflg = 1; /* implies -i */
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case 'i': iflg = 1; break;
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default: fprint(2, "usage: date [-itun] [seconds]\n"); exits("usage");
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case 'm': mflg = 1; break;
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default: fprint(2, "usage: date [-itunm] [seconds]\n"); exits("usage");
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}ARGEND
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if(argc == 1)
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@ -65,7 +92,9 @@ main(int argc, char *argv[])
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print("%s\n", isotime(tm));
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else
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print("%s\n", isodate(tm));
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} else
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} else if(mflg)
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print("%s\n", mailtime(tm));
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else
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print("%s", asctime(tm));
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}
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exits(0);
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