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refs.c: change resolve_ref_unsafe reading argument to be a flags field

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resolve_ref_unsafe takes a boolean argument for reading (a nonexistent ref
resolves successfully for writing but not for reading).  Change this to be
a flags field instead, and pass the new constant RESOLVE_REF_READING when
we want this behaviour.

While at it, swap two of the arguments in the function to put output
arguments at the end.  As a nice side effect, this ensures that we can
catch callers that were unaware of the new API so they can be audited.

Give the wrapper functions resolve_refdup and read_ref_full the same
treatment for consistency.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ronnie Sahlberg
2014-07-15 12:59:36 -07:00
committed by Junio C Hamano
parent aae383db8c
commit 7695d118e5
28 changed files with 124 additions and 92 deletions
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2
branch.c
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@ -170,7 +170,7 @@ int validate_new_branchname(const char *name, struct strbuf *ref,
const char *head;
unsigned char sha1[20];
head = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
head = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
if (!is_bare_repository() && head && !strcmp(head, ref->buf))
die(_("Cannot force update the current branch."));
}