[waffle] [PATCH 07/11] core: Add func wcore_attrib_list_copy()

[Chad Versace]

This is useful for making a writable copy of a read-only attribute list.

Signed-off-by: Chad Versace <chad.versace at linux.intel.com>
---
 src/waffle/core/wcore_attrib_list.c | 19 +++++++++++++++++++
 src/waffle/core/wcore_attrib_list.h |  3 +++
 2 files changed, 22 insertions(+)

diff --git a/src/waffle/core/wcore_attrib_list.c b/src/waffle/core/wcore_attrib_list.c
index a7f087d..94013b9 100644
--- a/src/waffle/core/wcore_attrib_list.c
+++ b/src/waffle/core/wcore_attrib_list.c
@@ -28,6 +28,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <stddef.h>
+#include <string.h>
 
 size_t
 wcore_attrib_list_length(const intptr_t attrib_list[])
@@ -43,6 +44,24 @@ wcore_attrib_list_length(const intptr_t attrib_list[])
     return (i - attrib_list) / 2;
 }
 
+intptr_t*
+wcore_attrib_list_copy(const intptr_t attrib_list[])
+{
+    intptr_t *copy;
+
+    if (attrib_list) {
+        size_t length = wcore_attrib_list_length(attrib_list);
+        intptr_t size = (2 * length + 1) * sizeof(intptr_t);
+        copy = malloc(size);
+        memcpy(copy, attrib_list, size);
+    } else {
+        copy = malloc(sizeof(intptr_t));
+        copy[0] = 0;
+    }
+
+    return copy;
+}
+
 bool
 wcore_attrib_list_get(
         const intptr_t *attrib_list,
diff --git a/src/waffle/core/wcore_attrib_list.h b/src/waffle/core/wcore_attrib_list.h
index 5e6473b..bd1179d 100644
--- a/src/waffle/core/wcore_attrib_list.h
+++ b/src/waffle/core/wcore_attrib_list.h
@@ -32,6 +32,9 @@
 size_t
 wcore_attrib_list_length(const intptr_t attrib_list[]);
 
+intptr_t*
+wcore_attrib_list_copy(const intptr_t attrib_list[]);
+
 bool
 wcore_attrib_list_get(
         const intptr_t *attrib_list,
-- 
2.2.0