mirror of
https://github.com/git/git.git
synced 2024-11-19 04:33:56 +01:00
3d9f037c60
A function intended to be called from builtins updating refs by locking them before write, specially those that came from scripts using "git update-ref". [jc: with minor fixups] Signed-off-by: Carlos Rica <jasampler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
67 lines
1.4 KiB
C
67 lines
1.4 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;
|
|
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.");
|
|
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);
|
|
|
|
return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
|
|
ref_flags, DIE_ON_ERR);
|
|
}
|