git/builtin/symbolic-ref.c
Junio C Hamano 4beb7a3b06 Merge branch 'kn/ref-transaction-symref'
Updates to symbolic refs can now be made as a part of ref
transaction.

* kn/ref-transaction-symref:
  refs: remove `create_symref` and associated dead code
  refs: rename `refs_create_symref()` to `refs_update_symref()`
  refs: use transaction in `refs_create_symref()`
  refs: add support for transactional symref updates
  refs: move `original_update_refname` to 'refs.c'
  refs: support symrefs in 'reference-transaction' hook
  files-backend: extract out `create_symref_lock()`
  refs: accept symref values in `ref_transaction_update()`
2024-05-20 11:20:04 -07:00

94 lines
2.7 KiB
C

#include "builtin.h"
#include "config.h"
#include "gettext.h"
#include "refs.h"
#include "parse-options.h"
#include "strbuf.h"
static const char * const git_symbolic_ref_usage[] = {
N_("git symbolic-ref [-m <reason>] <name> <ref>"),
N_("git symbolic-ref [-q] [--short] [--no-recurse] <name>"),
N_("git symbolic-ref --delete [-q] <name>"),
NULL
};
static int check_symref(const char *HEAD, int quiet, int shorten, int recurse, int print)
{
int resolve_flags, flag;
const char *refname;
resolve_flags = (recurse ? 0 : RESOLVE_REF_NO_RECURSE);
refname = refs_resolve_ref_unsafe(get_main_ref_store(the_repository),
HEAD, resolve_flags, NULL, &flag);
if (!refname)
die("No such ref: %s", HEAD);
else if (!(flag & REF_ISSYMREF)) {
if (!quiet)
die("ref %s is not a symbolic ref", HEAD);
else
return 1;
}
if (print) {
char *to_free = NULL;
if (shorten)
refname = to_free = refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
refname,
0);
puts(refname);
free(to_free);
}
return 0;
}
int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
{
int quiet = 0, delete = 0, shorten = 0, recurse = 1, ret = 0;
const char *msg = NULL;
struct option options[] = {
OPT__QUIET(&quiet,
N_("suppress error message for non-symbolic (detached) refs")),
OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")),
OPT_BOOL(0, "short", &shorten, N_("shorten ref output")),
OPT_BOOL(0, "recurse", &recurse, N_("recursively dereference (default)")),
OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")),
OPT_END(),
};
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, options,
git_symbolic_ref_usage, 0);
if (msg && !*msg)
die("Refusing to perform update with empty message");
if (delete) {
if (argc != 1)
usage_with_options(git_symbolic_ref_usage, options);
ret = check_symref(argv[0], 1, 0, 0, 0);
if (ret)
die("Cannot delete %s, not a symbolic ref", argv[0]);
if (!strcmp(argv[0], "HEAD"))
die("deleting '%s' is not allowed", argv[0]);
return refs_delete_ref(get_main_ref_store(the_repository),
NULL, argv[0], NULL, REF_NO_DEREF);
}
switch (argc) {
case 1:
ret = check_symref(argv[0], quiet, shorten, recurse, 1);
break;
case 2:
if (!strcmp(argv[0], "HEAD") &&
!starts_with(argv[1], "refs/"))
die("Refusing to point HEAD outside of refs/");
if (check_refname_format(argv[1], REFNAME_ALLOW_ONELEVEL) < 0)
die("Refusing to set '%s' to invalid ref '%s'", argv[0], argv[1]);
ret = !!refs_update_symref(get_main_ref_store(the_repository),
argv[0], argv[1], msg);
break;
default:
usage_with_options(git_symbolic_ref_usage, options);
}
return ret;
}