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[git] / 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 }