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755b49ae96
When the current branch is renamed with 'git branch -m/-M' or deleted with 'git update-ref -m<msg> -d', the event is recorded in HEAD's log with an empty message. In preparation for adding a more meaningful message to HEAD's log in these cases, update delete_ref() to take a message argument and pass it along to ref_transaction_delete(). Modify all callers to pass NULL for the new message argument; no change in behavior is intended. Note that this is relevant for HEAD's log but not for the deleted ref's log, which is currently deleted along with the ref. Even if it were not, an entry for the deletion wouldn't be present in the deleted ref's log. files_transaction_commit() writes to the log if REF_NEEDS_COMMIT or REF_LOG_ONLY are set, but lock_ref_for_update() doesn't set REF_NEEDS_COMMIT for the deleted ref because REF_DELETING is set. In contrast, the update for HEAD has REF_LOG_ONLY set by split_head_update(), resulting in the deletion being logged. Signed-off-by: Kyle Meyer <kyle@kyleam.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
79 lines
2 KiB
C
79 lines
2 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "refs.h"
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#include "parse-options.h"
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static const char * const git_symbolic_ref_usage[] = {
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N_("git symbolic-ref [<options>] <name> [<ref>]"),
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N_("git symbolic-ref -d [-q] <name>"),
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NULL
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};
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static int check_symref(const char *HEAD, int quiet, int shorten, int print)
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{
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unsigned char sha1[20];
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int flag;
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const char *refname = resolve_ref_unsafe(HEAD, 0, sha1, &flag);
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if (!refname)
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die("No such ref: %s", HEAD);
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else if (!(flag & REF_ISSYMREF)) {
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if (!quiet)
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die("ref %s is not a symbolic ref", HEAD);
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else
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return 1;
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}
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if (print) {
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if (shorten)
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refname = shorten_unambiguous_ref(refname, 0);
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puts(refname);
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}
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return 0;
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}
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int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
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{
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int quiet = 0, delete = 0, shorten = 0, ret = 0;
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const char *msg = NULL;
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struct option options[] = {
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OPT__QUIET(&quiet,
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N_("suppress error message for non-symbolic (detached) refs")),
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OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")),
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OPT_BOOL(0, "short", &shorten, N_("shorten ref output")),
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OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")),
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OPT_END(),
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};
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git_config(git_default_config, NULL);
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argc = parse_options(argc, argv, prefix, options,
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git_symbolic_ref_usage, 0);
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if (msg && !*msg)
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die("Refusing to perform update with empty message");
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if (delete) {
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if (argc != 1)
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usage_with_options(git_symbolic_ref_usage, options);
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ret = check_symref(argv[0], 1, 0, 0);
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if (ret)
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die("Cannot delete %s, not a symbolic ref", argv[0]);
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if (!strcmp(argv[0], "HEAD"))
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die("deleting '%s' is not allowed", argv[0]);
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return delete_ref(NULL, argv[0], NULL, REF_NODEREF);
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}
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switch (argc) {
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case 1:
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ret = check_symref(argv[0], quiet, shorten, 1);
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break;
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case 2:
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if (!strcmp(argv[0], "HEAD") &&
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!starts_with(argv[1], "refs/"))
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die("Refusing to point HEAD outside of refs/");
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ret = !!create_symref(argv[0], argv[1], msg);
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break;
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default:
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usage_with_options(git_symbolic_ref_usage, options);
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}
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return ret;
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}
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