Added a character string compare function to be able to unit test.

bacnet-stack/bacstr.c

@@ -235,6 +235,33 @@ bool characterstring_copy(
     characterstring_length(src));
 }
 
+bool characterstring_same(
+  BACNET_CHARACTER_STRING *dest,
+  BACNET_CHARACTER_STRING *src)
+{
+  size_t i; /* counter */
+  bool same_status = false;
+
+  if (src && dest)
+  {
+    if ((src->length == dest->length) &&
+      (src->encoding == dest->encoding))
+    {
+      same_status = true;
+      for (i = 0; i < src->length; i++)
+      {
+        if (src->value[i] != dest->value[i])
+        {
+          same_status = false;
+          break;
+        }
+      }
+    }
+  }
+
+  return same_status;
+}
+
 /* returns false if the string exceeds capacity */
 bool characterstring_append(
   BACNET_CHARACTER_STRING *char_string,

bacnet-stack/bacstr.h

@@ -102,6 +102,10 @@ bool characterstring_init_ansi(
 bool characterstring_copy(
   BACNET_CHARACTER_STRING *dest,
   BACNET_CHARACTER_STRING *src);
+/* returns true if the strings are the same length, encoding, value */
+bool characterstring_same(
+  BACNET_CHARACTER_STRING *dest,
+  BACNET_CHARACTER_STRING *src);
 /* returns false if the string exceeds capacity */
 bool characterstring_append(
   BACNET_CHARACTER_STRING *char_string,