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Merge branch 'jc/cherry-pick' (early part)

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* 'jc/cherry-pick' (early part):
  expose a helper function peel_to_type().
  merge-recursive: split low-level merge functions out.

Conflicts:

	Makefile
	builtin-merge-recursive.c
	sha1_name.c
This commit is contained in:
Junio C Hamano
2008-03-11 02:05:12 -07:00
parent 1c53606978 8177631547
commit 5d921e2931
6 changed files with 449 additions and 389 deletions
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60
sha1_name.c
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@ -422,6 +422,37 @@ static int get_nth_ancestor(const char *name, int len,
return 0;
}
struct object *peel_to_type(const char *name, int namelen,
struct object *o, enum object_type expected_type)
{
if (name && !namelen)
namelen = strlen(name);
if (!o) {
unsigned char sha1[20];
if (get_sha1_1(name, namelen, sha1))
return NULL;
o = parse_object(sha1);
}
while (1) {
if (!o || (!o->parsed && !parse_object(o->sha1)))
return NULL;
if (o->type == expected_type)
return o;
if (o->type == OBJ_TAG)
o = ((struct tag*) o)->tagged;
else if (o->type == OBJ_COMMIT)
o = &(((struct commit *) o)->tree->object);
else {
if (name)
error("%.*s: expected %s type, but the object "
"dereferences to %s type",
namelen, name, typename(expected_type),
typename(o->type));
return NULL;
}
}
}
static int peel_onion(const char *name, int len, unsigned char *sha1)
{
unsigned char outer[20];
@ -473,32 +504,17 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
hashcpy(sha1, o->sha1);
}
else {
/* At this point, the syntax look correct, so
/*
* At this point, the syntax look correct, so
* if we do not get the needed object, we should
* barf.
*/
while (1) {
if (!o || (!o->parsed && !parse_object(o->sha1)))
return -1;
if (o->type == expected_type) {
hashcpy(sha1, o->sha1);
return 0;
}
if (o->type == OBJ_TAG)
o = ((struct tag*) o)->tagged;
else if (o->type == OBJ_COMMIT)
o = &(((struct commit *) o)->tree->object);
else
return error("%.*s: expected %s type, but the object dereferences to %s type",
len, name, typename(expected_type),
typename(o->type));
if (!o)
return -1;
if (!o->parsed)
if (!parse_object(o->sha1))
return -1;
o = peel_to_type(name, len, o, expected_type);
if (o) {
hashcpy(sha1, o->sha1);
return 0;
}
return -1;
}
return 0;
}