diff options
Diffstat (limited to 'vtime.c')
| -rw-r--r-- | vtime.c | 60 |
1 files changed, 60 insertions, 0 deletions
@@ -0,0 +1,60 @@ +#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; +} |