1 files changed, 72 insertions, 0 deletions
diff --git a/lib/vnlib.browser/src/binhelpers.ts b/lib/vnlib.browser/src/binhelpers.ts
new file mode 100644
index 0000000..c6ad274
--- /dev/null
+++ b/lib/vnlib.browser/src/binhelpers.ts
@@ -0,0 +1,72 @@
+// Copyright (c) 2023 Vaughn Nugent
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+export const LongToArray = function (long : number) {
+  // Empty array
+  const byteArray = Array(8).fill(0)
+  for (let index = 0; index < 8; index++) {
+    const byte = long & 0xff
+    byteArray[index] = byte
+    long = (long - byte) / 256
+  }
+  return byteArray
+}
+
+export const IntToArray = function(int : number) {
+  // Empty array
+  const byteArray = Array(4).fill(0)
+  for (let index = 0; index < 4; index++) {
+    const byte = int & 0xff
+    byteArray[index] = byte
+    int = (int - byte) / 256
+  }
+  return byteArray
+}
+
+export const Base64ToArray = function (b64string : string) : Array<number> {
+  // Recover the encoded data
+  const decData = atob(b64string)
+  // Convert to array
+  return Array.from(decData, c => c.charCodeAt(0))
+}
+
+export const Base64ToUint8Array = function (b64string : string) : Uint8Array {
+  // Recover the encoded data
+  const decData = atob(b64string)
+  // Convert to array
+  return Uint8Array.from(decData, c => c.charCodeAt(0))
+}
+
+export const Utf8StringToBuffer = function (str : string) : Array<number> {
+  // encode the string to utf8 binary
+  const enc = new TextEncoder().encode(str)
+  return Array.from(enc);
+}
+
+export const ArrayBuffToBase64 = function(e : ArrayBuffer) : string {
+  const arr = Array.from(new Uint8Array(e))
+  return btoa(String.fromCharCode.apply(null, arr))
+}
+
+export const ArrayToHexString = function(buffer : Array<number> | ArrayBuffer) : string {
+  return Array.prototype.map.call(buffer, function (byte : number) {
+    return ('0' + (byte & 0xFF).toString(16)).slice(-2)
+  }).join('')
+}