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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[] = { |
b10bf3fa | 7 | N_("git symbolic-ref [options] name [ref]"), |
78558614 PH |
8 | NULL |
9 | }; | |
8098a178 | 10 | |
42b00599 JK |
11 | static int shorten; |
12 | ||
a0f4280f | 13 | static void check_symref(const char *HEAD, int quiet) |
8098a178 JH |
14 | { |
15 | unsigned char sha1[20]; | |
8da19775 | 16 | int flag; |
42b00599 | 17 | const char *refname = resolve_ref_unsafe(HEAD, sha1, 0, &flag); |
ed378ec7 | 18 | |
42b00599 | 19 | if (!refname) |
8098a178 | 20 | die("No such ref: %s", HEAD); |
a0f4280f JH |
21 | else if (!(flag & REF_ISSYMREF)) { |
22 | if (!quiet) | |
23 | die("ref %s is not a symbolic ref", HEAD); | |
24 | else | |
25 | exit(1); | |
26 | } | |
42b00599 JK |
27 | if (shorten) |
28 | refname = shorten_unambiguous_ref(refname, 0); | |
29 | puts(refname); | |
8098a178 JH |
30 | } |
31 | ||
640ce105 | 32 | int cmd_symbolic_ref(int argc, const char **argv, const char *prefix) |
8098a178 | 33 | { |
a0f4280f | 34 | int quiet = 0; |
8b5157e4 | 35 | const char *msg = NULL; |
78558614 | 36 | struct option options[] = { |
8c839683 | 37 | OPT__QUIET(&quiet, |
b10bf3fa NTND |
38 | N_("suppress error message for non-symbolic (detached) refs")), |
39 | OPT_BOOL(0, "short", &shorten, N_("shorten ref output")), | |
40 | OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")), | |
78558614 PH |
41 | OPT_END(), |
42 | }; | |
a0f4280f | 43 | |
ef90d6d4 | 44 | git_config(git_default_config, NULL); |
37782920 SB |
45 | argc = parse_options(argc, argv, prefix, options, |
46 | git_symbolic_ref_usage, 0); | |
78558614 PH |
47 | if (msg &&!*msg) |
48 | die("Refusing to perform update with empty message"); | |
8098a178 | 49 | switch (argc) { |
78558614 PH |
50 | case 1: |
51 | check_symref(argv[0], quiet); | |
8098a178 | 52 | break; |
78558614 | 53 | case 2: |
afe5d3d5 | 54 | if (!strcmp(argv[0], "HEAD") && |
e9cc02f0 JK |
55 | prefixcmp(argv[1], "refs/")) |
56 | die("Refusing to point HEAD outside of refs/"); | |
78558614 | 57 | create_symref(argv[0], argv[1], msg); |
8098a178 JH |
58 | break; |
59 | default: | |
78558614 | 60 | usage_with_options(git_symbolic_ref_usage, options); |
8098a178 JH |
61 | } |
62 | return 0; | |
63 | } |