[PATCH v4 05/11] promisor-remote: use repository_format_partial_clone

[Christian Couder <christian.couder@gmail.com>]

A remote specified using the extensions.partialClone config
option should be considered a promisor remote too.

This remote should be at the end of the promisor remote list,
so that it is used only if objects have not been found in other
remotes.

If we are using promisor remotes other than the origin, it is
because these other promisor remotes are likely to be better
for some reason (maybe they are closer or faster for some kind
of objects) than the origin, so it's logical that we try to use
them first.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 promisor-remote.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/promisor-remote.c b/promisor-remote.c
index d1fcd1a8bf..6a689737f0 100644
--- a/promisor-remote.c
+++ b/promisor-remote.c
@@ -40,6 +40,18 @@ static struct promisor_remote *promisor_remote_lookup(const char *remote_name,
 	return NULL;
 }
 
+static void promisor_remote_move_to_tail(struct promisor_remote *r,
+					 struct promisor_remote *previous)
+{
+	if (previous)
+		previous->next = r->next;
+	else
+		promisors = r->next ? r->next : r;
+	r->next = NULL;
+	*promisors_tail = r;
+	promisors_tail = &r->next;
+}
+
 static int promisor_remote_config(const char *var, const char *value, void *data)
 {
 	const char *name;
@@ -76,6 +88,17 @@ static void promisor_remote_init(void)
 	initialized = 1;
 
 	git_config(promisor_remote_config, NULL);
+
+	if (repository_format_partial_clone) {
+		struct promisor_remote *o, *previous;
+
+		o = promisor_remote_lookup(repository_format_partial_clone,
+					   &previous);
+		if (o)
+			promisor_remote_move_to_tail(o, previous);
+		else
+			promisor_remote_new(repository_format_partial_clone);
+	}
 }
 
 static void promisor_remote_clear(void)
-- 
2.21.0.203.gd44fa53258