[RFC PATCH 1/5] oidmap: add oidmap_add()

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

We will need to have more than one entry with the same oid key
in an oidmap, which is not supported yet, as oipmap_put()
replaces an existing entry with the same oid key. So let's add
oidmap_add().

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 oidmap.c | 12 ++++++++++++
 oidmap.h |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/oidmap.c b/oidmap.c
index 6d6e840d03..bfb290ee01 100644
--- a/oidmap.c
+++ b/oidmap.c
@@ -43,6 +43,17 @@ void *oidmap_remove(struct oidmap *map, const struct object_id *key)
 	return hashmap_remove(&map->map, &entry, key);
 }
 
+void oidmap_add(struct oidmap *map, void *entry)
+{
+	struct oidmap_entry *to_put = entry;
+
+	if (!map->map.cmpfn)
+		oidmap_init(map, 0);
+
+	hashmap_entry_init(&to_put->internal_entry, oidhash(&to_put->oid));
+	hashmap_add(&map->map, to_put);
+}
+
 void *oidmap_put(struct oidmap *map, void *entry)
 {
 	struct oidmap_entry *to_put = entry;
@@ -53,3 +64,4 @@ void *oidmap_put(struct oidmap *map, void *entry)
 	hashmap_entry_init(&to_put->internal_entry, oidhash(&to_put->oid));
 	return hashmap_put(&map->map, to_put);
 }
+
diff --git a/oidmap.h b/oidmap.h
index 7a939461ff..21d929ad79 100644
--- a/oidmap.h
+++ b/oidmap.h
@@ -49,6 +49,12 @@ void oidmap_free(struct oidmap *map, int free_entries);
 void *oidmap_get(const struct oidmap *map,
 		 const struct object_id *key);
 
+/*
+ * Adds an oidmap entry. This allows to add duplicate entries (i.e.
+ * separate values with the same oid key).
+ */
+void oidmap_add(struct oidmap *map, void *entry);
+
 /*
  * Adds or replaces an oidmap entry.
  *
-- 
2.22.0.514.g3228928bce.dirty