builtin-prune-packed.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "progress.h"
   4
   5 static const char prune_packed_usage[] =
   6 "git-prune-packed [-n] [-q]";
   7
   8 #define DRY_RUN 01
   9 #define VERBOSE 02
  10
  11 static struct progress *progress;
  12
  13 static void prune_dir(int i, DIR *dir, char *pathname, int len, int opts)
  14 {
  15         struct dirent *de;
  16         char hex[40];
  17
  18         display_progress(progress, i + 1);
  19
  20         sprintf(hex, "%02x", i);
  21         while ((de = readdir(dir)) != NULL) {
  22                 unsigned char sha1[20];
  23                 if (strlen(de->d_name) != 38)
  24                         continue;
  25                 memcpy(hex+2, de->d_name, 38);
  26                 if (get_sha1_hex(hex, sha1))
  27                         continue;
  28                 if (!has_sha1_pack(sha1, NULL))
  29                         continue;
  30                 memcpy(pathname + len, de->d_name, 38);
  31                 if (opts & DRY_RUN)
  32                         printf("rm -f %s\n", pathname);
  33                 else if (unlink(pathname) < 0)
  34                         error("unable to unlink %s", pathname);
  35         }
  36         pathname[len] = 0;
  37         rmdir(pathname);
  38 }
  39
  40 void prune_packed_objects(int opts)
  41 {
  42         int i;
  43         static char pathname[PATH_MAX];
  44         const char *dir = get_object_directory();
  45         int len = strlen(dir);
  46
  47         if (opts == VERBOSE)
  48                 progress = start_progress_delay("Removing duplicate objects",
  49                         256, 95, 2);
  50
  51         if (len > PATH_MAX - 42)
  52                 die("impossible object directory");
  53         memcpy(pathname, dir, len);
  54         if (len && pathname[len-1] != '/')
  55                 pathname[len++] = '/';
  56         for (i = 0; i < 256; i++) {
  57                 DIR *d;
  58
  59                 sprintf(pathname + len, "%02x/", i);
  60                 d = opendir(pathname);
  61                 if (!d)
  62                         continue;
  63                 prune_dir(i, d, pathname, len + 3, opts);
  64                 closedir(d);
  65         }
  66         stop_progress(&progress);
  67 }
  68
  69 int cmd_prune_packed(int argc, const char **argv, const char *prefix)
  70 {
  71         int i;
  72         int opts = VERBOSE;
  73
  74         for (i = 1; i < argc; i++) {
  75                 const char *arg = argv[i];
  76
  77                 if (*arg == '-') {
  78                         if (!strcmp(arg, "-n"))
  79                                 opts |= DRY_RUN;
  80                         else if (!strcmp(arg, "-q"))
  81                                 opts &= ~VERBOSE;
  82                         else
  83                                 usage(prune_packed_usage);
  84                         continue;
  85                 }
  86                 /* Handle arguments here .. */
  87                 usage(prune_packed_usage);
  88         }
  89         sync();
  90         prune_packed_objects(opts);
  91         return 0;
  92 }