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         "git prune-packed [-n|--dry-run] [-q|--quiet]",
   8         NULL
   9 };
  10
  11 #define DRY_RUN 01
  12 #define VERBOSE 02
  13
  14 static struct progress *progress;
  15
  16 static void prune_dir(int i, DIR *dir, char *pathname, int len, int opts)
  17 {
  18         struct dirent *de;
  19         char hex[40];
  20
  21         sprintf(hex, "%02x", i);
  22         while ((de = readdir(dir)) != NULL) {
  23                 unsigned char sha1[20];
  24                 if (strlen(de->d_name) != 38)
  25                         continue;
  26                 memcpy(hex+2, de->d_name, 38);
  27                 if (get_sha1_hex(hex, sha1))
  28                         continue;
  29                 if (!has_sha1_pack(sha1))
  30                         continue;
  31                 memcpy(pathname + len, de->d_name, 38);
  32                 if (opts & DRY_RUN)
  33                         printf("rm -f %s\n", pathname);
  34                 else
  35                         unlink_or_warn(pathname);
  36                 display_progress(progress, i + 1);
  37         }
  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                 display_progress(progress, i + 1);
  60                 sprintf(pathname + len, "%02x/", i);
  61                 d = opendir(pathname);
  62                 if (!d)
  63                         continue;
  64                 prune_dir(i, d, pathname, len + 3, opts);
  65                 closedir(d);
  66                 pathname[len + 2] = '\0';
  67                 rmdir(pathname);
  68         }
  69         stop_progress(&progress);
  70 }
  71
  72 int cmd_prune_packed(int argc, const char **argv, const char *prefix)
  73 {
  74         int opts = isatty(2) ? VERBOSE : 0;
  75         const struct option prune_packed_options[] = {
  76                 OPT_BIT('n', "dry-run", &opts, "dry run", DRY_RUN),
  77                 OPT_NEGBIT('q', "quiet", &opts, "be quiet", VERBOSE),
  78                 OPT_END()
  79         };
  80
  81         argc = parse_options(argc, argv, prefix, prune_packed_options,
  82                              prune_packed_usage, 0);
  83
  84         prune_packed_objects(opts);
  85         return 0;
  86 }