rename samples to examples; delete dead build scripts

examples/old_style_custom_layer.c

@@ -0,0 +1,51 @@
+// Sample code for old Data Desk style custom layer, adapted to Metadesk.
+
+#include "md.h"
+#include "md.c"
+
+static MD_Arena *arena = 0;
+
+static void
+Initialize(void)
+{
+    // Called when the program starts.
+}
+
+static void
+TopLevel(MD_Node *node)
+{
+    // Called for every top-level node that is parsed from passed files.
+}
+
+static void
+CleanUp(void)
+{
+    // Runs before the program ends.
+}
+
+int main(int argument_count, char **arguments)
+{
+    arena = MD_ArenaAlloc(1ull << 40);
+    
+    // NOTE(rjf): Parse all the files passed in via command line.
+    MD_Node *list = MD_MakeList(arena);
+    for(int i = 1; i < argument_count; i += 1)
+    {
+        MD_Node *root = MD_ParseWholeFile(arena, MD_S8CString(arguments[i])).node;
+        MD_PushNewReference(arena, list, root);
+    }
+    
+    // NOTE(rjf): Call "custom layer" back.
+    Initialize();
+    for(MD_EachNode(ref, list->first_child))
+    {
+        MD_Node *root = MD_NodeFromReference(ref);
+        for(MD_EachNode(node, root->first_child))
+        {
+            TopLevel(node);
+        }
+    }
+    CleanUp();
+    
+    return 0;
+}