mirror of
https://github.com/git/git.git
synced 2024-05-26 17:36:28 +02:00
9befac470b
Like xmalloc and xrealloc xstrdup dies with a useful message if the native strdup() implementation returns NULL rather than a valid pointer. I just tried to use xstrdup in new code and found it to be missing. However I expected it to be present as xmalloc and xrealloc are already commonly used throughout the code. [jc: removed the part that deals with last_XXX, which I am finding more and more dubious these days.] Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
36 lines
816 B
C
36 lines
816 B
C
#include "builtin.h"
|
|
#include "cache.h"
|
|
|
|
static const char git_symbolic_ref_usage[] =
|
|
"git-symbolic-ref name [ref]";
|
|
|
|
static void check_symref(const char *HEAD)
|
|
{
|
|
unsigned char sha1[20];
|
|
const char *git_HEAD = xstrdup(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
|
|
die("No such ref: %s", HEAD);
|
|
}
|
|
|
|
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(xstrdup(git_path("%s", argv[1])), argv[2]);
|
|
break;
|
|
default:
|
|
usage(git_symbolic_ref_usage);
|
|
}
|
|
return 0;
|
|
}
|