Begin refactor.

src/util/string.h

@@ -4,9 +4,33 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include <dawn/dawn.h>
+#include "../libs.h"
 #include "array.h"
 
+#define STRING_HANDLEBAR_KEY_MAXLENGTH 32
+
+#define STRING_STACK_STRING_SIZE 256
+#define STRING_STACK_STRING_COUNT 128
+#define STRING_STACK_BUFFER STRING_STACK_STRING_SIZE * STRING_STACK_STRING_COUNT
+
+/** Representation of a String Handlebar Variable */
+typedef struct {
+  /** The key to use to replace in the source */
+  char *key;
+  /** The value to replace it with */
+  char *value;
+} stringhandlebarvariable_t;
+
+/** Definition of a string stack to push and pop strings from. */
+typedef struct {
+  /** Raw char buffer, for holding strings */
+  char buffer[STRING_STACK_BUFFER];
+  /** Strings themselves */
+  char *strings[STRING_STACK_STRING_COUNT];
+  /** How many strings are on the stack */
+  int32_t size;
+} stringstack_t;
+
 /**
  * Replaces handlebars within the string with items from the list of variables.
  * Output of replacement is stored in the buffer provided. Handlebars within the