prune-packed.c

   1 #include "cache.h"
   2
   3 static const char prune_packed_usage[] =
   4 "git-prune-packed [-n]";
   5
   6 static int dryrun;
   7
   8 static void prune_dir(int i, DIR *dir, char *pathname, int len)
   9 {
  10         struct dirent *de;
  11         char hex[40];
  12
  13         sprintf(hex, "%02x", i);
  14         while ((de = readdir(dir)) != NULL) {
  15                 unsigned char sha1[20];
  16                 if (strlen(de->d_name) != 38)
  17                         continue;
  18                 memcpy(hex+2, de->d_name, 38);
  19                 if (get_sha1_hex(hex, sha1))
  20                         continue;
  21                 if (!has_sha1_pack(sha1))
  22                         continue;
  23                 memcpy(pathname + len, de->d_name, 38);
  24                 if (dryrun)
  25                         printf("rm -f %s\n", pathname);
  26                 else if (unlink(pathname) < 0)
  27                         error("unable to unlink %s", pathname);
  28         }
  29         pathname[len] = 0;
  30         if (rmdir(pathname))
  31                 mkdir(pathname, 0777);
  32 }
  33
  34 static void prune_packed_objects(void)
  35 {
  36         int i;
  37         static char pathname[PATH_MAX];
  38         const char *dir = get_object_directory();
  39         int len = strlen(dir);
  40
  41         if (len > PATH_MAX - 42)
  42                 die("impossible object directory");
  43         memcpy(pathname, dir, len);
  44         if (len && pathname[len-1] != '/')
  45                 pathname[len++] = '/';
  46         for (i = 0; i < 256; i++) {
  47                 DIR *d;
  48
  49                 sprintf(pathname + len, "%02x/", i);
  50                 d = opendir(pathname);
  51                 if (!d)
  52                         continue;
  53                 prune_dir(i, d, pathname, len + 3);
  54                 closedir(d);
  55         }
  56 }
  57
  58 int main(int argc, char **argv)
  59 {
  60         int i;
  61
  62         for (i = 1; i < argc; i++) {
  63                 const char *arg = argv[i];
  64
  65                 if (*arg == '-') {
  66                         if (!strcmp(arg, "-n"))
  67                                 dryrun = 1;
  68                         else
  69                                 usage(prune_packed_usage);
  70                         continue;
  71                 }
  72                 /* Handle arguments here .. */
  73                 usage(prune_packed_usage);
  74         }
  75         prune_packed_objects();
  76         return 0;
  77 }