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Commit | Line | Data |
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e1e22e37 LT |
1 | #include "cache.h" |
2 | #include "refs.h" | |
cf0adba7 JH |
3 | #include "object.h" |
4 | #include "tag.h" | |
e1e22e37 | 5 | |
96884601 | 6 | static const char builtin_pack_refs_usage[] = |
0f018bab | 7 | "git-pack-refs [--all] [--prune | --no-prune]"; |
96884601 JH |
8 | |
9 | struct ref_to_prune { | |
10 | struct ref_to_prune *next; | |
11 | unsigned char sha1[20]; | |
12 | char name[FLEX_ARRAY]; | |
13 | }; | |
14 | ||
15 | struct pack_refs_cb_data { | |
16 | int prune; | |
ca8e2d86 | 17 | int all; |
96884601 JH |
18 | struct ref_to_prune *ref_to_prune; |
19 | FILE *refs_file; | |
20 | }; | |
e1e22e37 | 21 | |
96884601 JH |
22 | static int do_not_prune(int flags) |
23 | { | |
24 | /* If it is already packed or if it is a symref, | |
25 | * do not prune it. | |
26 | */ | |
27 | return (flags & (REF_ISSYMREF|REF_ISPACKED)); | |
28 | } | |
29 | ||
8da19775 JH |
30 | static int handle_one_ref(const char *path, const unsigned char *sha1, |
31 | int flags, void *cb_data) | |
e1e22e37 | 32 | { |
96884601 | 33 | struct pack_refs_cb_data *cb = cb_data; |
cf0adba7 | 34 | int is_tag_ref; |
cb5d709f | 35 | |
13e4aa90 | 36 | /* Do not pack the symbolic refs */ |
cf0adba7 JH |
37 | if ((flags & REF_ISSYMREF)) |
38 | return 0; | |
39 | is_tag_ref = !strncmp(path, "refs/tags/", 10); | |
40 | if (!cb->all && !is_tag_ref) | |
41 | return 0; | |
42 | ||
43 | fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path); | |
44 | if (is_tag_ref) { | |
45 | struct object *o = parse_object(sha1); | |
46 | if (o->type == OBJ_TAG) { | |
47 | o = deref_tag(o, path, 0); | |
48 | if (o) | |
f4204ab9 JH |
49 | fprintf(cb->refs_file, "^%s\n", |
50 | sha1_to_hex(o->sha1)); | |
cf0adba7 JH |
51 | } |
52 | } | |
53 | ||
96884601 JH |
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; | |
60 | cb->ref_to_prune = n; | |
61 | } | |
e1e22e37 LT |
62 | return 0; |
63 | } | |
64 | ||
96884601 JH |
65 | /* make sure nobody touched the ref, and unlink */ |
66 | static void prune_ref(struct ref_to_prune *r) | |
67 | { | |
4431fcc4 | 68 | struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1); |
96884601 JH |
69 | |
70 | if (lock) { | |
6d15987c | 71 | unlink(git_path("%s", r->name)); |
96884601 JH |
72 | unlock_ref(lock); |
73 | } | |
74 | } | |
75 | ||
76 | static void prune_refs(struct ref_to_prune *r) | |
77 | { | |
78 | while (r) { | |
79 | prune_ref(r); | |
80 | r = r->next; | |
81 | } | |
82 | } | |
83 | ||
03a18210 JH |
84 | static struct lock_file packed; |
85 | ||
e1e22e37 LT |
86 | int cmd_pack_refs(int argc, const char **argv, const char *prefix) |
87 | { | |
96884601 JH |
88 | int fd, i; |
89 | struct pack_refs_cb_data cbdata; | |
90 | ||
91 | memset(&cbdata, 0, sizeof(cbdata)); | |
92 | ||
0f018bab | 93 | cbdata.prune = 1; |
96884601 JH |
94 | for (i = 1; i < argc; i++) { |
95 | const char *arg = argv[i]; | |
96 | if (!strcmp(arg, "--prune")) { | |
0f018bab JH |
97 | cbdata.prune = 1; /* now the default */ |
98 | continue; | |
99 | } | |
100 | if (!strcmp(arg, "--no-prune")) { | |
101 | cbdata.prune = 0; | |
96884601 JH |
102 | continue; |
103 | } | |
b3d4204f | 104 | if (!strcmp(arg, "--all")) { |
ca8e2d86 | 105 | cbdata.all = 1; |
b3d4204f JH |
106 | continue; |
107 | } | |
96884601 JH |
108 | /* perhaps other parameters later... */ |
109 | break; | |
110 | } | |
111 | if (i != argc) | |
112 | usage(builtin_pack_refs_usage); | |
e1e22e37 | 113 | |
03a18210 | 114 | fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1); |
96884601 JH |
115 | cbdata.refs_file = fdopen(fd, "w"); |
116 | if (!cbdata.refs_file) | |
117 | die("unable to create ref-pack file structure (%s)", | |
118 | strerror(errno)); | |
f4204ab9 JH |
119 | |
120 | /* perhaps other traits later as well */ | |
121 | fprintf(cbdata.refs_file, "# pack-refs with: peeled \n"); | |
122 | ||
ca8e2d86 | 123 | for_each_ref(handle_one_ref, &cbdata); |
422b4a0e | 124 | fflush(cbdata.refs_file); |
e1e22e37 | 125 | fsync(fd); |
96884601 | 126 | fclose(cbdata.refs_file); |
03a18210 | 127 | if (commit_lock_file(&packed) < 0) |
e1e22e37 | 128 | die("unable to overwrite old ref-pack file (%s)", strerror(errno)); |
96884601 JH |
129 | if (cbdata.prune) |
130 | prune_refs(cbdata.ref_to_prune); | |
e1e22e37 LT |
131 | return 0; |
132 | } |