#include "builtin.h"
#include "cache.h"
+#include "refs.h"
+#include "parse-options.h"
-static const char git_symbolic_ref_usage[] =
-"git-symbolic-ref name [ref]";
+static const char * const git_symbolic_ref_usage[] = {
+ "git-symbolic-ref [options] name [ref]",
+ NULL
+};
-static void check_symref(const char *HEAD)
+static void check_symref(const char *HEAD, int quiet)
{
unsigned char sha1[20];
- const char *git_HEAD = strdup(git_path("%s", HEAD));
- const char *git_refs_heads_master = resolve_ref(git_HEAD, sha1, 0);
- if (git_refs_heads_master) {
- /* we want to strip the .git/ part */
- int pfxlen = strlen(git_HEAD) - strlen(HEAD);
- puts(git_refs_heads_master + pfxlen);
- }
- else
+ int flag;
+ const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag);
+
+ if (!refs_heads_master)
die("No such ref: %s", HEAD);
+ else if (!(flag & REF_ISSYMREF)) {
+ if (!quiet)
+ die("ref %s is not a symbolic ref", HEAD);
+ else
+ exit(1);
+ }
+ puts(refs_heads_master);
}
int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
{
+ int quiet = 0;
+ const char *msg = NULL;
+ struct option options[] = {
+ OPT__QUIET(&quiet),
+ OPT_STRING('m', NULL, &msg, "reason", "reason of the update"),
+ OPT_END(),
+ };
+
git_config(git_default_config);
+ argc = parse_options(argc, argv, options, git_symbolic_ref_usage, 0);
+ if (msg &&!*msg)
+ die("Refusing to perform update with empty message");
switch (argc) {
- case 2:
- check_symref(argv[1]);
+ case 1:
+ check_symref(argv[0], quiet);
break;
- case 3:
- create_symref(strdup(git_path("%s", argv[1])), argv[2]);
+ case 2:
+ create_symref(argv[0], argv[1], msg);
break;
default:
- usage(git_symbolic_ref_usage);
+ usage_with_options(git_symbolic_ref_usage, options);
}
return 0;
}