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Commit | Line | Data |
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640ce105 | 1 | #include "builtin.h" |
8098a178 | 2 | #include "cache.h" |
8da19775 | 3 | #include "refs.h" |
78558614 | 4 | #include "parse-options.h" |
8098a178 | 5 | |
78558614 | 6 | static const char * const git_symbolic_ref_usage[] = { |
1b1dd23f | 7 | "git symbolic-ref [options] name [ref]", |
78558614 PH |
8 | NULL |
9 | }; | |
8098a178 | 10 | |
a0f4280f | 11 | static void check_symref(const char *HEAD, int quiet) |
8098a178 JH |
12 | { |
13 | unsigned char sha1[20]; | |
8da19775 JH |
14 | int flag; |
15 | const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag); | |
ed378ec7 LT |
16 | |
17 | if (!refs_heads_master) | |
8098a178 | 18 | die("No such ref: %s", HEAD); |
a0f4280f JH |
19 | else if (!(flag & REF_ISSYMREF)) { |
20 | if (!quiet) | |
21 | die("ref %s is not a symbolic ref", HEAD); | |
22 | else | |
23 | exit(1); | |
24 | } | |
ed378ec7 | 25 | puts(refs_heads_master); |
8098a178 JH |
26 | } |
27 | ||
640ce105 | 28 | int cmd_symbolic_ref(int argc, const char **argv, const char *prefix) |
8098a178 | 29 | { |
a0f4280f | 30 | int quiet = 0; |
8b5157e4 | 31 | const char *msg = NULL; |
78558614 PH |
32 | struct option options[] = { |
33 | OPT__QUIET(&quiet), | |
34 | OPT_STRING('m', NULL, &msg, "reason", "reason of the update"), | |
35 | OPT_END(), | |
36 | }; | |
a0f4280f | 37 | |
ef90d6d4 | 38 | git_config(git_default_config, NULL); |
37782920 SB |
39 | argc = parse_options(argc, argv, prefix, options, |
40 | git_symbolic_ref_usage, 0); | |
78558614 PH |
41 | if (msg &&!*msg) |
42 | die("Refusing to perform update with empty message"); | |
8098a178 | 43 | switch (argc) { |
78558614 PH |
44 | case 1: |
45 | check_symref(argv[0], quiet); | |
8098a178 | 46 | break; |
78558614 | 47 | case 2: |
afe5d3d5 | 48 | if (!strcmp(argv[0], "HEAD") && |
e9cc02f0 JK |
49 | prefixcmp(argv[1], "refs/")) |
50 | die("Refusing to point HEAD outside of refs/"); | |
78558614 | 51 | create_symref(argv[0], argv[1], msg); |
8098a178 JH |
52 | break; |
53 | default: | |
78558614 | 54 | usage_with_options(git_symbolic_ref_usage, options); |
8098a178 JH |
55 | } |
56 | return 0; | |
57 | } |