From c3cf1a827807d11b07bce9d6941342c68808aab1 Mon Sep 17 00:00:00 2001
From: Eric Laurent <elaurent@google.com>
Date: Thu, 26 May 2011 13:57:03 -0700
Subject: [PATCH] Config utils improvement

Added a function to free resources allocated by config node tree.

Change-Id: I2ee8ae642899ec4501fa6e490c5be7efaa2d738e
---
 include/cutils/config_utils.h |  3 +++
 libcutils/config_utils.c      | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/cutils/config_utils.h b/include/cutils/config_utils.h
index f3fb370a8..2dea6f19f 100644
--- a/include/cutils/config_utils.h
+++ b/include/cutils/config_utils.h
@@ -54,6 +54,9 @@ const char* config_str(cnode *root, const char *name, const char *_default);
 /* add a named child to a config node (or modify it if it already exists) */
 void config_set(cnode *root, const char *name, const char *value);
 
+/* free a config node tree */
+void config_free(cnode *root);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/libcutils/config_utils.c b/libcutils/config_utils.c
index 75fa6c6d4..fc5ca7876 100644
--- a/libcutils/config_utils.c
+++ b/libcutils/config_utils.c
@@ -315,3 +315,15 @@ void config_load_file(cnode *root, const char *fn)
     data = load_file(fn, 0);
     config_load(root, data);
 }
+
+void config_free(cnode *root)
+{
+    cnode *cur = root->first_child;
+
+    while (cur) {
+        cnode *prev = cur;
+        config_free(cur);
+        cur = cur->next;
+        free(prev);
+    }
+}