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resolve_ref_unsafe(): ensure flags is always set

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If the caller passes flags==NULL, then set it to point at a local
scratch variable. This removes the need for a lot of "if (flags)"
guards in resolve_ref_1() and resolve_missing_loose_ref().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2016-04-07 15:02:57 -04:00 committed by Junio C Hamano
parent 37da4227b2
commit a70a93b794
1 changed files with 13 additions and 18 deletions
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31
refs/files-backend.c
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@ -1383,8 +1383,7 @@ static int resolve_missing_loose_ref(const char *refname,
entry = get_packed_ref(refname);
if (entry) {
hashcpy(sha1, entry->u.value.oid.hash);
if (flags)
*flags |= REF_ISPACKED;
*flags |= REF_ISPACKED;
return 0;
}
/* refname is not a packed reference. */
@ -1403,12 +1402,10 @@ static const char *resolve_ref_1(const char *refname,
int bad_name = 0;
int symref_count;
if (flags)
*flags = 0;
*flags = 0;
if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
if (flags)
*flags |= REF_BAD_NAME;
*flags |= REF_BAD_NAME;
if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
!refname_is_safe(refname)) {
@ -1458,8 +1455,7 @@ static const char *resolve_ref_1(const char *refname,
}
if (bad_name) {
hashclr(sha1);
if (flags)
*flags |= REF_ISBROKEN;
*flags |= REF_ISBROKEN;
}
return refname;
}
@ -1478,8 +1474,7 @@ static const char *resolve_ref_1(const char *refname,
!check_refname_format(sb_contents->buf, 0)) {
strbuf_swap(sb_refname, sb_contents);
refname = sb_refname->buf;
if (flags)
*flags |= REF_ISSYMREF;
*flags |= REF_ISSYMREF;
if (resolve_flags & RESOLVE_REF_NO_RECURSE) {
hashclr(sha1);
return refname;
@ -1526,20 +1521,17 @@ static const char *resolve_ref_1(const char *refname,
*/
if (get_sha1_hex(sb_contents->buf, sha1) ||
(sb_contents->buf[40] != '\0' && !isspace(sb_contents->buf[40]))) {
if (flags)
*flags |= REF_ISBROKEN;
*flags |= REF_ISBROKEN;
errno = EINVAL;
return NULL;
}
if (bad_name) {
hashclr(sha1);
if (flags)
*flags |= REF_ISBROKEN;
*flags |= REF_ISBROKEN;
}
return refname;
}
if (flags)
*flags |= REF_ISSYMREF;
*flags |= REF_ISSYMREF;
buf = sb_contents->buf + 4;
while (isspace(*buf))
buf++;
@ -1551,8 +1543,7 @@ static const char *resolve_ref_1(const char *refname,
return refname;
}
if (check_refname_format(buf, REFNAME_ALLOW_ONELEVEL)) {
if (flags)
*flags |= REF_ISBROKEN;
*flags |= REF_ISBROKEN;
if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
!refname_is_safe(buf)) {
@ -1573,8 +1564,12 @@ const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
static struct strbuf sb_refname = STRBUF_INIT;
struct strbuf sb_contents = STRBUF_INIT;
struct strbuf sb_path = STRBUF_INIT;
int unused_flags;
const char *ret;
if (!flags)
flags = &unused_flags;
ret = resolve_ref_1(refname, resolve_flags, sha1, flags,
&sb_refname, &sb_path, &sb_contents);
strbuf_release(&sb_path);