mirror of
https://github.com/git/git.git
synced 2024-10-30 05:47:53 +01:00
68db31cc28
git-checkout is also adapted to make use of this new option instead of the handcrafted command sequence. Signed-off-by: Sven Verdoolaege <skimo@kotnet.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
#include "cache.h"
|
|
#include "refs.h"
|
|
#include "builtin.h"
|
|
|
|
static const char git_update_ref_usage[] =
|
|
"git-update-ref [-m <reason>] (-d <refname> <value> | [--no-deref] <refname> <value> [<oldval>])";
|
|
|
|
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;
|
|
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);
|
|
|
|
if (delete) {
|
|
if (oldval)
|
|
usage(git_update_ref_usage);
|
|
return delete_ref(refname, sha1);
|
|
}
|
|
|
|
hashclr(oldsha1);
|
|
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;
|
|
}
|