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Commit | Line | Data |
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640ce105 | 1 | #include "builtin.h" |
b2141fc1 | 2 | #include "config.h" |
8098a178 | 3 | #include "cache.h" |
8da19775 | 4 | #include "refs.h" |
78558614 | 5 | #include "parse-options.h" |
8098a178 | 6 | |
78558614 | 7 | static const char * const git_symbolic_ref_usage[] = { |
9c9b4f2f | 8 | N_("git symbolic-ref [<options>] <name> [<ref>]"), |
b77e3bdd | 9 | N_("git symbolic-ref -d [-q] [--no-recurse] <name>"), |
78558614 PH |
10 | NULL |
11 | }; | |
8098a178 | 12 | |
b77e3bdd | 13 | static int check_symref(const char *HEAD, int quiet, int shorten, int recurse, int print) |
8098a178 | 14 | { |
b77e3bdd JH |
15 | int resolve_flags, flag; |
16 | const char *refname; | |
17 | ||
18 | resolve_flags = (recurse ? 0 : RESOLVE_REF_NO_RECURSE); | |
19 | refname = resolve_ref_unsafe(HEAD, resolve_flags, NULL, &flag); | |
ed378ec7 | 20 | |
42b00599 | 21 | if (!refname) |
8098a178 | 22 | die("No such ref: %s", HEAD); |
a0f4280f JH |
23 | else if (!(flag & REF_ISSYMREF)) { |
24 | if (!quiet) | |
25 | die("ref %s is not a symbolic ref", HEAD); | |
26 | else | |
9ab55daa JH |
27 | return 1; |
28 | } | |
29 | if (print) { | |
f63b8886 | 30 | char *to_free = NULL; |
9ab55daa | 31 | if (shorten) |
f63b8886 | 32 | refname = to_free = shorten_unambiguous_ref(refname, 0); |
9ab55daa | 33 | puts(refname); |
f63b8886 | 34 | free(to_free); |
a0f4280f | 35 | } |
9ab55daa | 36 | return 0; |
8098a178 JH |
37 | } |
38 | ||
640ce105 | 39 | int cmd_symbolic_ref(int argc, const char **argv, const char *prefix) |
8098a178 | 40 | { |
b77e3bdd | 41 | int quiet = 0, delete = 0, shorten = 0, recurse = 1, ret = 0; |
8b5157e4 | 42 | const char *msg = NULL; |
78558614 | 43 | struct option options[] = { |
8c839683 | 44 | OPT__QUIET(&quiet, |
b10bf3fa | 45 | N_("suppress error message for non-symbolic (detached) refs")), |
9ab55daa | 46 | OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")), |
b10bf3fa | 47 | OPT_BOOL(0, "short", &shorten, N_("shorten ref output")), |
b77e3bdd | 48 | OPT_BOOL(0, "recurse", &recurse, N_("recursively dereference (default)")), |
b10bf3fa | 49 | OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")), |
78558614 PH |
50 | OPT_END(), |
51 | }; | |
a0f4280f | 52 | |
ef90d6d4 | 53 | git_config(git_default_config, NULL); |
37782920 SB |
54 | argc = parse_options(argc, argv, prefix, options, |
55 | git_symbolic_ref_usage, 0); | |
c01499ef | 56 | if (msg && !*msg) |
78558614 | 57 | die("Refusing to perform update with empty message"); |
9ab55daa JH |
58 | |
59 | if (delete) { | |
60 | if (argc != 1) | |
61 | usage_with_options(git_symbolic_ref_usage, options); | |
b77e3bdd | 62 | ret = check_symref(argv[0], 1, 0, 0, 0); |
9ab55daa JH |
63 | if (ret) |
64 | die("Cannot delete %s, not a symbolic ref", argv[0]); | |
12cfa792 JH |
65 | if (!strcmp(argv[0], "HEAD")) |
66 | die("deleting '%s' is not allowed", argv[0]); | |
91774afc | 67 | return delete_ref(NULL, argv[0], NULL, REF_NO_DEREF); |
9ab55daa JH |
68 | } |
69 | ||
8098a178 | 70 | switch (argc) { |
78558614 | 71 | case 1: |
b77e3bdd | 72 | ret = check_symref(argv[0], quiet, shorten, recurse, 1); |
8098a178 | 73 | break; |
78558614 | 74 | case 2: |
afe5d3d5 | 75 | if (!strcmp(argv[0], "HEAD") && |
59556548 | 76 | !starts_with(argv[1], "refs/")) |
e9cc02f0 | 77 | die("Refusing to point HEAD outside of refs/"); |
3e4068ed | 78 | ret = !!create_symref(argv[0], argv[1], msg); |
8098a178 JH |
79 | break; |
80 | default: | |
78558614 | 81 | usage_with_options(git_symbolic_ref_usage, options); |
8098a178 | 82 | } |
9ab55daa | 83 | return ret; |
8098a178 | 84 | } |