git/builtin-symbolic-ref.c
Junio C Hamano 8da1977554 Tell between packed, unpacked and symbolic refs.
This adds a "int *flag" parameter to resolve_ref() and makes
for_each_ref() family to call callback function with an extra
"int flag" parameter.  They are used to give two bits of
information (REF_ISSYMREF and REF_ISPACKED) about the ref.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 22:02:01 -07:00

36 lines
728 B
C

#include "builtin.h"
#include "cache.h"
#include "refs.h"
static const char git_symbolic_ref_usage[] =
"git-symbolic-ref name [ref]";
static void check_symref(const char *HEAD)
{
unsigned char sha1[20];
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))
die("ref %s is not a symbolic ref", HEAD);
puts(refs_heads_master);
}
int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
{
git_config(git_default_config);
switch (argc) {
case 2:
check_symref(argv[1]);
break;
case 3:
create_symref(argv[1], argv[2]);
break;
default:
usage(git_symbolic_ref_usage);
}
return 0;
}