| 1 | #define USE_THE_REPOSITORY_VARIABLE |
| 2 | #include "builtin.h" |
| 3 | #include "config.h" |
| 4 | #include "environment.h" |
| 5 | #include "gettext.h" |
| 6 | #include "refs.h" |
| 7 | #include "parse-options.h" |
| 8 | #include "strbuf.h" |
| 9 | |
| 10 | static const char * const git_symbolic_ref_usage[] = { |
| 11 | N_("git symbolic-ref [-m <reason>] <name> <ref>"), |
| 12 | N_("git symbolic-ref [-q] [--short] [--no-recurse] <name>"), |
| 13 | N_("git symbolic-ref --delete [-q] <name>"), |
| 14 | NULL |
| 15 | }; |
| 16 | |
| 17 | static int check_symref(const char *HEAD, int quiet, int shorten, int recurse, int print) |
| 18 | { |
| 19 | int resolve_flags, flag; |
| 20 | const char *refname; |
| 21 | |
| 22 | resolve_flags = (recurse ? 0 : RESOLVE_REF_NO_RECURSE); |
| 23 | refname = refs_resolve_ref_unsafe(get_main_ref_store(the_repository), |
| 24 | HEAD, resolve_flags, NULL, &flag); |
| 25 | |
| 26 | if (!refname) |
| 27 | die("No such ref: %s", HEAD); |
| 28 | else if (!(flag & REF_ISSYMREF)) { |
| 29 | if (!quiet) |
| 30 | die("ref %s is not a symbolic ref", HEAD); |
| 31 | else |
| 32 | return 1; |
| 33 | } |
| 34 | if (print) { |
| 35 | char *to_free = NULL; |
| 36 | if (shorten) |
| 37 | refname = to_free = refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), |
| 38 | refname, |
| 39 | 0); |
| 40 | puts(refname); |
| 41 | free(to_free); |
| 42 | } |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | int cmd_symbolic_ref(int argc, |
| 47 | const char **argv, |
| 48 | const char *prefix, |
| 49 | struct repository *repo UNUSED) |
| 50 | { |
| 51 | int quiet = 0, delete = 0, shorten = 0, recurse = 1, ret = 0; |
| 52 | const char *msg = NULL; |
| 53 | struct option options[] = { |
| 54 | OPT__QUIET(&quiet, |
| 55 | N_("suppress error message for non-symbolic (detached) refs")), |
| 56 | OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")), |
| 57 | OPT_BOOL(0, "short", &shorten, N_("shorten ref output")), |
| 58 | OPT_BOOL(0, "recurse", &recurse, N_("recursively dereference (default)")), |
| 59 | OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")), |
| 60 | OPT_END(), |
| 61 | }; |
| 62 | |
| 63 | repo_config(the_repository, git_default_config, NULL); |
| 64 | argc = parse_options(argc, argv, prefix, options, |
| 65 | git_symbolic_ref_usage, 0); |
| 66 | if (msg && !*msg) |
| 67 | die("Refusing to perform update with empty message"); |
| 68 | |
| 69 | if (delete) { |
| 70 | if (argc != 1) |
| 71 | usage_with_options(git_symbolic_ref_usage, options); |
| 72 | ret = check_symref(argv[0], 1, 0, 0, 0); |
| 73 | if (ret) |
| 74 | die("Cannot delete %s, not a symbolic ref", argv[0]); |
| 75 | if (!strcmp(argv[0], "HEAD")) |
| 76 | die("deleting '%s' is not allowed", argv[0]); |
| 77 | return refs_delete_ref(get_main_ref_store(the_repository), |
| 78 | NULL, argv[0], NULL, REF_NO_DEREF); |
| 79 | } |
| 80 | |
| 81 | switch (argc) { |
| 82 | case 1: |
| 83 | ret = check_symref(argv[0], quiet, shorten, recurse, 1); |
| 84 | break; |
| 85 | case 2: |
| 86 | if (!strcmp(argv[0], "HEAD") && |
| 87 | !starts_with(argv[1], "refs/")) |
| 88 | die("Refusing to point HEAD outside of refs/"); |
| 89 | if (check_refname_format(argv[1], REFNAME_ALLOW_ONELEVEL) < 0) |
| 90 | die("Refusing to set '%s' to invalid ref '%s'", argv[0], argv[1]); |
| 91 | ret = !!refs_update_symref(get_main_ref_store(the_repository), |
| 92 | argv[0], argv[1], msg); |
| 93 | break; |
| 94 | default: |
| 95 | usage_with_options(git_symbolic_ref_usage, options); |
| 96 | } |
| 97 | return ret; |
| 98 | } |