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#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <time.h>
#define VTIME_IMPL
#include "vtime.h"
void
help()
{
fprintf(stdout, "vtime [FORMAT]\n\
\t[YYYY/yy].[mm].dd Sets the date. Can set only the day/month.\n\
\t Instead of dot(.) coult be any non-numeric character.\n\
\t+/-[k](d/w/m/y) Add/subtract k units from the date. k is implicitly 1\n\
\tt[his]/n[ext] Wday\n\
\tl[ast]/p[rev] Wday Go to next/previous week day. Wday is the week day prefix.\n\
\tb[egining]\n\ts[tart]\n\tf[irst]\n\
\te[nd] w[eek]/m[onth]/y[ear] Go to first/last day in week/month/year.\n\
");
}
int
main(int argc, char **argv)
{
int i;
time_t now = time(NULL);
struct tm out = *(localtime(&now));
if (argc == 1) {
help();
return 0;
}
char *fmt, *pnt;
size_t len = 0;
for (i = 1; i < argc; i++) {
len += 1 + strlen(argv[i]);
}
fmt = calloc(len, sizeof(*fmt));
if (fmt == NULL) {
fprintf(stderr, "Failed malloc\n");
return 1;
}
for (i = 1, pnt = fmt; i < argc; i++) {
pnt = stpcpy(pnt, argv[i]);
if (i != argc-1)
*(pnt++) = ' ';
}
if (vtime(&out, fmt, 0)) {
fprintf(stderr, "Wrong format\n");
return 1;
}
fprintf(stdout, "%s", asctime(&out));
return 0;
}
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