From db4cc3022f815ecf77ad1d5ddf1cc90d04f9b238 Mon Sep 17 00:00:00 2001
From: Daniel Wippermann <Daniel.Wippermann@gmail.com>
Date: Sat, 8 Jul 2023 09:27:07 +0200
Subject: [PATCH] Add `SpecificationFile#getPacketTemplate`.

---
 src/specification-file.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/specification-file.js b/src/specification-file.js
index 5afb42b..21167e9 100644
--- a/src/specification-file.js
+++ b/src/specification-file.js
@@ -569,6 +569,21 @@ class SpecificationFile {
         this.packetTemplates = packetTemplates;
     }
 
+    getPacketTemplate(destinationAddress, sourceAddress, command) {
+        return this.packetTemplates.find(pt => {
+            if ((pt.destinationAddress & pt.destinationMask) !== (destinationAddress & pt.destinationMask)) {
+                // nop
+            } else if ((pt.sourceAddress & pt.sourceMask) !== (sourceAddress & pt.sourceMask)) {
+                // nop
+            } else if (pt.command !== command) {
+                // nop
+            } else {
+                return true;
+            }
+            return false;
+        });
+    }
+
     getRawValue(pt, ptf, buffer, start, end) {
         let rawValue = 0, valid = false;
         for (const part of ptf.parts) {