Add Abstract: support for howto index generator.
[git] / prune-packed.c
1 #include "cache.h"
2
3 static const char prune_packed_usage[] =
4 "git-prune-packed [-n]";
5
6 static int dryrun;
7
8 static void prune_dir(int i, DIR *dir, char *pathname, int len)
9 {
10         struct dirent *de;
11         char hex[40];
12
13         sprintf(hex, "%02x", i);
14         while ((de = readdir(dir)) != NULL) {
15                 unsigned char sha1[20];
16                 if (strlen(de->d_name) != 38)
17                         continue;
18                 memcpy(hex+2, de->d_name, 38);
19                 if (get_sha1_hex(hex, sha1))
20                         continue;
21                 if (!has_sha1_pack(sha1))
22                         continue;
23                 memcpy(pathname + len, de->d_name, 38);
24                 if (dryrun)
25                         printf("rm -f %s\n", pathname);
26                 else if (unlink(pathname) < 0)
27                         error("unable to unlink %s", pathname);
28         }
29 }
30
31 static void prune_packed_objects(void)
32 {
33         int i;
34         static char pathname[PATH_MAX];
35         const char *dir = get_object_directory();
36         int len = strlen(dir);
37
38         if (len > PATH_MAX - 42)
39                 die("impossible object directory");
40         memcpy(pathname, dir, len);
41         if (len && pathname[len-1] != '/')
42                 pathname[len++] = '/';
43         for (i = 0; i < 256; i++) {
44                 DIR *d;
45
46                 sprintf(pathname + len, "%02x/", i);
47                 d = opendir(pathname);
48                 if (!d)
49                         die("unable to open %s", pathname);
50                 prune_dir(i, d, pathname, len + 3);
51                 closedir(d);
52         }
53 }
54
55 int main(int argc, char **argv)
56 {
57         int i;
58
59         for (i = 1; i < argc; i++) {
60                 const char *arg = argv[i];
61
62                 if (*arg == '-') {
63                         if (!strcmp(arg, "-n"))
64                                 dryrun = 1;
65                         else
66                                 usage(prune_packed_usage);
67                         continue;
68                 }
69                 /* Handle arguments here .. */
70                 usage(prune_packed_usage);
71         }
72         prune_packed_objects();
73         return 0;
74 }