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] [-q]";
   6
   7 #define DRY_RUN 01
   8 #define VERBOSE 02
   9
  10 void sync(void);
  11
  12 static void prune_dir(int i, DIR *dir, char *pathname, int len, int opts)
  13 {
  14         struct dirent *de;
  15         char hex[40];
  16
  17         sprintf(hex, "%02x", i);
  18         while ((de = readdir(dir)) != NULL) {
  19                 unsigned char sha1[20];
  20                 if (strlen(de->d_name) != 38)
  21                         continue;
  22                 memcpy(hex+2, de->d_name, 38);
  23                 if (get_sha1_hex(hex, sha1))
  24                         continue;
  25                 if (!has_sha1_pack(sha1, NULL))
  26                         continue;
  27                 memcpy(pathname + len, de->d_name, 38);
  28                 if (opts & DRY_RUN)
  29                         printf("rm -f %s\n", pathname);
  30                 else {
  31                         if (unlink(pathname) < 0)
  32                                 error("unable to unlink %s", pathname);
  33                 }
  34         }
  35         pathname[len] = 0;
  36         rmdir(pathname);
  37 }
  38
  39 void prune_packed_objects(int opts)
  40 {
  41         int i;
  42         static char pathname[PATH_MAX];
  43         const char *dir = get_object_directory();
  44         int len = strlen(dir);
  45
  46         if (len > PATH_MAX - 42)
  47                 die("impossible object directory");
  48         memcpy(pathname, dir, len);
  49         if (len && pathname[len-1] != '/')
  50                 pathname[len++] = '/';
  51         for (i = 0; i < 256; i++) {
  52                 DIR *d;
  53
  54                 sprintf(pathname + len, "%02x/", i);
  55                 d = opendir(pathname);
  56                 if (opts == VERBOSE && (d || i == 255))
  57                         fprintf(stderr, "Removing unused objects %d%%...\015",
  58                                 ((i+1) * 100) / 256);
  59                 if (!d)
  60                         continue;
  61                 prune_dir(i, d, pathname, len + 3, opts);
  62                 closedir(d);
  63         }
  64         if (opts == VERBOSE)
  65                 fprintf(stderr, "\nDone.\n");
  66 }
  67
  68 int cmd_prune_packed(int argc, const char **argv, const char *prefix)
  69 {
  70         int i;
  71         int opts = VERBOSE;
  72
  73         for (i = 1; i < argc; i++) {
  74                 const char *arg = argv[i];
  75
  76                 if (*arg == '-') {
  77                         if (!strcmp(arg, "-n"))
  78                                 opts |= DRY_RUN;
  79                         else if (!strcmp(arg, "-q"))
  80                                 opts &= ~VERBOSE;
  81                         else
  82                                 usage(prune_packed_usage);
  83                         continue;
  84                 }
  85                 /* Handle arguments here .. */
  86                 usage(prune_packed_usage);
  87         }
  88         sync();
  89         prune_packed_objects(opts);
  90         return 0;
  91 }