test-chmtime.c

   1 #include "git-compat-util.h"
   2 #include <utime.h>
   3
   4 static const char usage_str[] = "(+|=|=+|=-|-)<seconds> <file>...";
   5
   6 int main(int argc, const char *argv[])
   7 {
   8         int i;
   9         int set_eq;
  10         long int set_time;
  11         char *test;
  12         const char *timespec;
  13
  14         if (argc < 3)
  15                 goto usage;
  16
  17         timespec = argv[1];
  18         set_eq = (*timespec == '=') ? 1 : 0;
  19         if (set_eq) {
  20                 timespec++;
  21                 if (*timespec == '+') {
  22                         set_eq = 2; /* relative "in the future" */
  23                         timespec++;
  24                 }
  25         }
  26         set_time = strtol(timespec, &test, 10);
  27         if (*test) {
  28                 fprintf(stderr, "Not a base-10 integer: %s\n", argv[1] + 1);
  29                 goto usage;
  30         }
  31         if ((set_eq && set_time < 0) || set_eq == 2) {
  32                 time_t now = time(NULL);
  33                 set_time += now;
  34         }
  35
  36         for (i = 2; i < argc; i++) {
  37                 struct stat sb;
  38                 struct utimbuf utb;
  39
  40                 if (stat(argv[i], &sb) < 0) {
  41                         fprintf(stderr, "Failed to stat %s: %s\n",
  42                                 argv[i], strerror(errno));
  43                         return -1;
  44                 }
  45
  46                 utb.actime = sb.st_atime;
  47                 utb.modtime = set_eq ? set_time : sb.st_mtime + set_time;
  48
  49                 if (utime(argv[i], &utb) < 0) {
  50                         fprintf(stderr, "Failed to modify time on %s: %s\n",
  51                                 argv[i], strerror(errno));
  52                         return -1;
  53                 }
  54         }
  55
  56         return 0;
  57
  58 usage:
  59         fprintf(stderr, "Usage: %s %s\n", argv[0], usage_str);
  60         return -1;
  61 }