prune-packed.c

   1 #include "cache.h"
   2
   3 static const char prune_packed_usage[] = "git-prune-packed (no arguments)";
   4
   5 static void prune_dir(int i, DIR *dir, char *pathname, int len)
   6 {
   7         struct dirent *de;
   8         char hex[40];
   9
  10         sprintf(hex, "%02x", i);
  11         while ((de = readdir(dir)) != NULL) {
  12                 unsigned char sha1[20];
  13                 if (strlen(de->d_name) != 38)
  14                         continue;
  15                 memcpy(hex+2, de->d_name, 38);
  16                 if (get_sha1_hex(hex, sha1))
  17                         continue;
  18                 if (!has_sha1_pack(sha1))
  19                         continue;
  20                 memcpy(pathname + len, de->d_name, 38);
  21                 if (unlink(pathname) < 0)
  22                         error("unable to unlink %s", pathname);
  23         }
  24 }
  25
  26 static void prune_packed_objects(void)
  27 {
  28         int i;
  29         static char pathname[PATH_MAX];
  30         const char *dir = get_object_directory();
  31         int len = strlen(dir);
  32
  33         if (len > PATH_MAX - 42)
  34                 die("impossible object directory");
  35         memcpy(pathname, dir, len);
  36         if (len && pathname[len-1] != '/')
  37                 pathname[len++] = '/';
  38         for (i = 0; i < 256; i++) {
  39                 DIR *d;
  40
  41                 sprintf(pathname + len, "%02x/", i);
  42                 d = opendir(pathname);
  43                 if (!d)
  44                         die("unable to open %s", pathname);
  45                 prune_dir(i, d, pathname, len + 3);
  46                 closedir(d);
  47         }
  48 }
  49
  50 int main(int argc, char **argv)
  51 {
  52         int i;
  53
  54         for (i = 1; i < argc; i++) {
  55                 const char *arg = argv[i];
  56
  57                 if (*arg == '-') {
  58                         /* Handle flags here .. */
  59                         usage(prune_packed_usage);
  60                 }
  61                 /* Handle arguments here .. */
  62                 usage(prune_packed_usage);
  63         }
  64         prune_packed_objects();
  65         return 0;
  66 }