1 files changed, 16 insertions, 0 deletions
diff --git a/src/lib/decoder.ts b/src/lib/decoder.ts
new file mode 100644
index 0000000..f28bbbc
--- /dev/null
+++ b/src/lib/decoder.ts
@@ -0,0 +1,16 @@
+export function decode(value: string): string {
+  var offset: number = parseInt(value.substring(0,2), 16);
+  var final: string = "";
+  for (let i = 2; i < value.length; i=i+3) {
+    var num: string = value.substring(i, i+3);
+    var charAscii: number = parseInt(num, 16)-offset;
+    final = final + String.fromCharCode(charAscii)
+  }
+  return final;
+}
+
+
+export function isDecoded(value: string): boolean {
+  var offset: number = Number(value.substring(0,2));
+  return isNaN(offset);
+}