From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 19 Dec 2011 18:54:51 +0000 (+0100)
Subject: hashmap: add hashmap_first_key()
X-Git-Tag: v38~144^2~28
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=2e4a6ff47b311216829ed0f48f17ee9bc35641dc

hashmap: add hashmap_first_key()
---

diff --git a/src/hashmap.c b/src/hashmap.c
index 95ea45da4..7ef809746 100644
--- a/src/hashmap.c
+++ b/src/hashmap.c
@@ -558,6 +558,17 @@ void* hashmap_first(Hashmap *h) {
         return h->iterate_list_head->value;
 }
 
+void* hashmap_first_key(Hashmap *h) {
+
+        if (!h)
+                return NULL;
+
+        if (!h->iterate_list_head)
+                return NULL;
+
+        return (void*) h->iterate_list_head->key;
+}
+
 void* hashmap_last(Hashmap *h) {
 
         if (!h)
diff --git a/src/hashmap.h b/src/hashmap.h
index 16ffbd392..ab4363a7a 100644
--- a/src/hashmap.h
+++ b/src/hashmap.h
@@ -74,6 +74,7 @@ void hashmap_clear(Hashmap *h);
 void *hashmap_steal_first(Hashmap *h);
 void *hashmap_steal_first_key(Hashmap *h);
 void* hashmap_first(Hashmap *h);
+void* hashmap_first_key(Hashmap *h);
 void* hashmap_last(Hashmap *h);
 
 char **hashmap_get_strv(Hashmap *h);