builtin/prune-packed.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "progress.h"
   4 #include "parse-options.h"
   5
   6 static const char * const prune_packed_usage[] = {
   7         N_("git prune-packed [-n|--dry-run] [-q|--quiet]"),
   8         NULL
   9 };
  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         sprintf(hex, "%02x", i);
  19         while ((de = readdir(dir)) != NULL) {
  20                 unsigned char sha1[20];
  21                 if (strlen(de->d_name) != 38)
  22                         continue;
  23                 memcpy(hex+2, de->d_name, 38);
  24                 if (get_sha1_hex(hex, sha1))
  25                         continue;
  26                 if (!has_sha1_pack(sha1))
  27                         continue;
  28                 memcpy(pathname + len, de->d_name, 38);
  29                 if (opts & PRUNE_PACKED_DRY_RUN)
  30                         printf("rm -f %s\n", pathname);
  31                 else
  32                         unlink_or_warn(pathname);
  33                 display_progress(progress, i + 1);
  34         }
  35 }
  36
  37 void prune_packed_objects(int opts)
  38 {
  39         int i;
  40         static char pathname[PATH_MAX];
  41         const char *dir = get_object_directory();
  42         int len = strlen(dir);
  43
  44         if (opts & PRUNE_PACKED_VERBOSE)
  45                 progress = start_progress_delay("Removing duplicate objects",
  46                         256, 95, 2);
  47
  48         if (len > PATH_MAX - 42)
  49                 die("impossible object directory");
  50         memcpy(pathname, dir, len);
  51         if (len && pathname[len-1] != '/')
  52                 pathname[len++] = '/';
  53         for (i = 0; i < 256; i++) {
  54                 DIR *d;
  55
  56                 display_progress(progress, i + 1);
  57                 sprintf(pathname + len, "%02x/", i);
  58                 d = opendir(pathname);
  59                 if (!d)
  60                         continue;
  61                 prune_dir(i, d, pathname, len + 3, opts);
  62                 closedir(d);
  63                 pathname[len + 2] = '\0';
  64                 rmdir(pathname);
  65         }
  66         stop_progress(&progress);
  67 }
  68
  69 int cmd_prune_packed(int argc, const char **argv, const char *prefix)
  70 {
  71         int opts = isatty(2) ? PRUNE_PACKED_VERBOSE : 0;
  72         const struct option prune_packed_options[] = {
  73                 OPT_BIT('n', "dry-run", &opts, N_("dry run"),
  74                         PRUNE_PACKED_DRY_RUN),
  75                 OPT_NEGBIT('q', "quiet", &opts, N_("be quiet"),
  76                            PRUNE_PACKED_VERBOSE),
  77                 OPT_END()
  78         };
  79
  80         argc = parse_options(argc, argv, prefix, prune_packed_options,
  81                              prune_packed_usage, 0);
  82
  83         prune_packed_objects(opts);
  84         return 0;
  85 }