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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" |
66bf85a4 | 4 | |
5b16b090 | 5 | static const char git_update_ref_usage[] = |
68db31cc | 6 | "git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])"; |
152da3df | 7 | |
a633fca0 | 8 | int cmd_update_ref(int argc, const char **argv, const char *prefix) |
66bf85a4 | 9 | { |
5b16b090 | 10 | const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL; |
5b16b090 | 11 | unsigned char sha1[20], oldsha1[20]; |
68db31cc | 12 | int i, delete, ref_flags; |
66bf85a4 | 13 | |
ac5409e4 | 14 | delete = 0; |
68db31cc | 15 | ref_flags = 0; |
84a9b58c | 16 | git_config(git_default_config); |
5b16b090 SP |
17 | |
18 | for (i = 1; i < argc; i++) { | |
19 | if (!strcmp("-m", argv[i])) { | |
20 | if (i+1 >= argc) | |
21 | usage(git_update_ref_usage); | |
22 | msg = argv[++i]; | |
23 | if (!*msg) | |
24 | die("Refusing to perform update with empty message."); | |
5b16b090 SP |
25 | continue; |
26 | } | |
ac5409e4 JH |
27 | if (!strcmp("-d", argv[i])) { |
28 | delete = 1; | |
29 | continue; | |
30 | } | |
68db31cc SV |
31 | if (!strcmp("--no-deref", argv[i])) { |
32 | ref_flags |= REF_NODEREF; | |
33 | continue; | |
34 | } | |
5b16b090 SP |
35 | if (!refname) { |
36 | refname = argv[i]; | |
37 | continue; | |
38 | } | |
39 | if (!value) { | |
40 | value = argv[i]; | |
41 | continue; | |
42 | } | |
43 | if (!oldval) { | |
44 | oldval = argv[i]; | |
45 | continue; | |
46 | } | |
47 | } | |
48 | if (!refname || !value) | |
66bf85a4 LT |
49 | usage(git_update_ref_usage); |
50 | ||
31fff305 | 51 | if (get_sha1(value, sha1)) |
66bf85a4 | 52 | die("%s: not a valid SHA1", value); |
ac5409e4 JH |
53 | |
54 | if (delete) { | |
55 | if (oldval) | |
56 | usage(git_update_ref_usage); | |
57 | return delete_ref(refname, sha1); | |
58 | } | |
59 | ||
a8e0d16d | 60 | hashclr(oldsha1); |
ac5409e4 | 61 | if (oldval && *oldval && get_sha1(oldval, oldsha1)) |
66bf85a4 LT |
62 | die("%s: not a valid old SHA1", oldval); |
63 | ||
3d9f037c CR |
64 | return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL, |
65 | ref_flags, DIE_ON_ERR); | |
66bf85a4 | 66 | } |