6 static const char builtin_pack_refs_usage[] =
7 "git-pack-refs [--all] [--prune | --no-prune]";
10 struct ref_to_prune *next;
11 unsigned char sha1[20];
12 char name[FLEX_ARRAY];
15 struct pack_refs_cb_data {
18 struct ref_to_prune *ref_to_prune;
22 static int do_not_prune(int flags)
24 /* If it is already packed or if it is a symref,
27 return (flags & (REF_ISSYMREF|REF_ISPACKED));
30 static int handle_one_ref(const char *path, const unsigned char *sha1,
31 int flags, void *cb_data)
33 struct pack_refs_cb_data *cb = cb_data;
36 /* Do not pack the symbolic refs */
37 if ((flags & REF_ISSYMREF))
39 is_tag_ref = !strncmp(path, "refs/tags/", 10);
40 if (!cb->all && !is_tag_ref)
43 fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path);
45 struct object *o = parse_object(sha1);
46 if (o->type == OBJ_TAG) {
47 o = deref_tag(o, path, 0);
49 fprintf(cb->refs_file, "^%s\n",
50 sha1_to_hex(o->sha1));
54 if (cb->prune && !do_not_prune(flags)) {
55 int namelen = strlen(path) + 1;
56 struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen);
57 hashcpy(n->sha1, sha1);
58 strcpy(n->name, path);
59 n->next = cb->ref_to_prune;
65 /* make sure nobody touched the ref, and unlink */
66 static void prune_ref(struct ref_to_prune *r)
68 struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1);
71 unlink(git_path("%s", r->name));
76 static void prune_refs(struct ref_to_prune *r)
84 static struct lock_file packed;
86 int cmd_pack_refs(int argc, const char **argv, const char *prefix)
89 struct pack_refs_cb_data cbdata;
91 memset(&cbdata, 0, sizeof(cbdata));
94 for (i = 1; i < argc; i++) {
95 const char *arg = argv[i];
96 if (!strcmp(arg, "--prune")) {
97 cbdata.prune = 1; /* now the default */
100 if (!strcmp(arg, "--no-prune")) {
104 if (!strcmp(arg, "--all")) {
108 /* perhaps other parameters later... */
112 usage(builtin_pack_refs_usage);
114 fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
115 cbdata.refs_file = fdopen(fd, "w");
116 if (!cbdata.refs_file)
117 die("unable to create ref-pack file structure (%s)",
120 /* perhaps other traits later as well */
121 fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
123 for_each_ref(handle_one_ref, &cbdata);
124 fflush(cbdata.refs_file);
126 fclose(cbdata.refs_file);
127 if (commit_lock_file(&packed) < 0)
128 die("unable to overwrite old ref-pack file (%s)", strerror(errno));
130 prune_refs(cbdata.ref_to_prune);