#include "cache.h"
#include "refs.h"
#include "builtin.h"
+#include "parse-options.h"
-static const char git_update_ref_usage[] =
-"git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])";
+static const char * const git_update_ref_usage[] = {
+ "git update-ref [options] -d <refname> [<oldval>]",
+ "git update-ref [options] <refname> <newval> [<oldval>]",
+ NULL
+};
int cmd_update_ref(int argc, const char **argv, const char *prefix)
{
- const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL;
- struct ref_lock *lock;
+ const char *refname, *oldval, *msg=NULL;
unsigned char sha1[20], oldsha1[20];
- int i, delete, ref_flags;
-
- delete = 0;
- ref_flags = 0;
- git_config(git_default_config);
-
- for (i = 1; i < argc; i++) {
- if (!strcmp("-m", argv[i])) {
- if (i+1 >= argc)
- usage(git_update_ref_usage);
- msg = argv[++i];
- if (!*msg)
- die("Refusing to perform update with empty message.");
- if (strchr(msg, '\n'))
- die("Refusing to perform update with \\n in message.");
- continue;
- }
- if (!strcmp("-d", argv[i])) {
- delete = 1;
- continue;
- }
- if (!strcmp("--no-deref", argv[i])) {
- ref_flags |= REF_NODEREF;
- continue;
- }
- if (!refname) {
- refname = argv[i];
- continue;
- }
- if (!value) {
- value = argv[i];
- continue;
- }
- if (!oldval) {
- oldval = argv[i];
- continue;
- }
- }
- if (!refname || !value)
- usage(git_update_ref_usage);
-
- if (get_sha1(value, sha1))
- die("%s: not a valid SHA1", value);
+ int delete = 0, no_deref = 0, flags = 0;
+ struct option options[] = {
+ OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"),
+ OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"),
+ OPT_BOOLEAN( 0 , "no-deref", &no_deref,
+ "update <refname> not the one it points to"),
+ OPT_END(),
+ };
+
+ git_config(git_default_config, NULL);
+ argc = parse_options(argc, argv, options, git_update_ref_usage, 0);
+ if (msg && !*msg)
+ die("Refusing to perform update with empty message.");
if (delete) {
- if (oldval)
- usage(git_update_ref_usage);
- return delete_ref(refname, sha1);
+ if (argc < 1 || argc > 2)
+ usage_with_options(git_update_ref_usage, options);
+ refname = argv[0];
+ oldval = argv[1];
+ } else {
+ const char *value;
+ if (argc < 2 || argc > 3)
+ usage_with_options(git_update_ref_usage, options);
+ refname = argv[0];
+ value = argv[1];
+ oldval = argv[2];
+ if (get_sha1(value, sha1))
+ die("%s: not a valid SHA1", value);
}
- hashclr(oldsha1);
+ hashclr(oldsha1); /* all-zero hash in case oldval is the empty string */
if (oldval && *oldval && get_sha1(oldval, oldsha1))
die("%s: not a valid old SHA1", oldval);
- lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL, ref_flags);
- if (!lock)
- die("%s: cannot lock the ref", refname);
- if (write_ref_sha1(lock, sha1, msg) < 0)
- die("%s: cannot update the ref", refname);
- return 0;
+ if (no_deref)
+ flags = REF_NODEREF;
+ if (delete)
+ return delete_ref(refname, oldval ? oldsha1 : NULL, flags);
+ else
+ return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
+ flags, DIE_ON_ERR);
}