add support for (key, val) attribute list

A (key, val) attribute list has this format

  { key1, val1, ..., keyN, valN, terminator }

and the size is 2*N + 1

diff --git a/glsize.hpp b/glsize.hpp
index 00356ae7c64cb52383b654f38666fe0f6f0615b9..a042a140c97785cb97664388413ce103532bea15 100644 (file)
--- a/glsize.hpp
+++ b/glsize.hpp
@@ -758,4 +758,24 @@ __AttribList_size(const T *pAttribList)
 }
 
 
+/*
+ * (key, value) attribute list, terminated by the given terminator.
+ */
+template<class T>
+static inline size_t
+__AttribList_size(const T *pAttribList, T terminator)
+{
+    size_t size = 0;
+
+    if (pAttribList) {
+        while (pAttribList[size] != terminator)
+            size += 2;
+        // terminator also counts
+        size++;
+    }
+
+    return size;
+}
+
+
 #endif /* _GL_SIZE_HPP_ */