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Commit | Line | Data |
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66bf85a4 LT |
1 | #include "cache.h" |
2 | #include "refs.h" | |
854b4629 | 3 | #include "builtin.h" |
89942be6 | 4 | #include "parse-options.h" |
66bf85a4 | 5 | |
89942be6 PH |
6 | static const char * const git_update_ref_usage[] = { |
7 | "git-update-ref [options] -d <refname> <oldval>", | |
8 | "git-update-ref [options] <refname> <newval> [<oldval>]", | |
9 | NULL | |
10 | }; | |
152da3df | 11 | |
a633fca0 | 12 | int cmd_update_ref(int argc, const char **argv, const char *prefix) |
66bf85a4 | 13 | { |
89942be6 | 14 | const char *refname, *value, *oldval, *msg=NULL; |
5b16b090 | 15 | unsigned char sha1[20], oldsha1[20]; |
89942be6 PH |
16 | int delete = 0, no_deref = 0; |
17 | struct option options[] = { | |
18 | OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"), | |
19 | OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"), | |
20 | OPT_BOOLEAN( 0 , "no-deref", &no_deref, | |
21 | "update <refname> not the one it points to"), | |
22 | OPT_END(), | |
23 | }; | |
66bf85a4 | 24 | |
ef90d6d4 | 25 | git_config(git_default_config, NULL); |
89942be6 PH |
26 | argc = parse_options(argc, argv, options, git_update_ref_usage, 0); |
27 | if (msg && !*msg) | |
28 | die("Refusing to perform update with empty message."); | |
5b16b090 | 29 | |
89942be6 PH |
30 | if (argc < 2 || argc > 3) |
31 | usage_with_options(git_update_ref_usage, options); | |
32 | refname = argv[0]; | |
33 | value = argv[1]; | |
34 | oldval = argv[2]; | |
66bf85a4 | 35 | |
31fff305 | 36 | if (get_sha1(value, sha1)) |
66bf85a4 | 37 | die("%s: not a valid SHA1", value); |
ac5409e4 JH |
38 | |
39 | if (delete) { | |
40 | if (oldval) | |
89942be6 | 41 | usage_with_options(git_update_ref_usage, options); |
ac5409e4 JH |
42 | return delete_ref(refname, sha1); |
43 | } | |
44 | ||
a8e0d16d | 45 | hashclr(oldsha1); |
ac5409e4 | 46 | if (oldval && *oldval && get_sha1(oldval, oldsha1)) |
66bf85a4 LT |
47 | die("%s: not a valid old SHA1", oldval); |
48 | ||
3d9f037c | 49 | return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL, |
89942be6 | 50 | no_deref ? REF_NODEREF : 0, DIE_ON_ERR); |
66bf85a4 | 51 | } |