builtin-prune-packed.c

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