From a27637888792eada3db2ac7625cc10cad3f1f0a9 Mon Sep 17 00:00:00 2001
From: Chris van Marle <qistoph@gmail.com>
Date: Fri, 12 Oct 2018 10:00:09 +0200
Subject: [PATCH] Enable parsing of negative decimals #176

---
 src/core/operations/FromDecimal.mjs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/core/operations/FromDecimal.mjs b/src/core/operations/FromDecimal.mjs
index f3c117ff..3376eebd 100644
--- a/src/core/operations/FromDecimal.mjs
+++ b/src/core/operations/FromDecimal.mjs
@@ -29,6 +29,11 @@ class FromDecimal extends Operation {
                 "name": "Delimiter",
                 "type": "option",
                 "value": DELIM_OPTIONS
+            },
+            {
+                "name": "Convert negatives",
+                "type": "boolean",
+                "value": false
             }
         ];
         this.patterns = [
@@ -71,7 +76,11 @@ class FromDecimal extends Operation {
      * @returns {byteArray}
      */
     run(input, args) {
-        return fromDecimal(input, args[0]);
+        let data = fromDecimal(input, args[0]);
+        if (args[1]) { // Convert negatives
+            data = data.map(v => v < 0 ? 0xFF + v + 1 : v);
+        }
+        return data;
     }
 
 }