no commit message

2020-09-17 18:40:01 +08:00
parent 4382915d09
commit d957abceaa
283 changed files with 86935 additions and 63 deletions
@@ -0,0 +1,46 @@
+/**
+ * Hex
+ *
+ * Utility class to convert Hex strings to ByteArray or String types.
+ * Copyright (c) 2007 Henri Torgemane
+ *
+ * See LICENSE.txt for full license information.
+ */
+package org.mangui.hls.utils {
+    import flash.utils.ByteArray;
+
+    public class Hex {
+        /**
+         * Generates byte-array from given hexadecimal string
+         *
+         * Supports straight and colon-laced hex (that means 23:03:0e:f0, but *NOT* 23:3:e:f0)
+         * The first nibble (hex digit) may be omitted.
+         * Any whitespace characters are ignored.
+         */
+        public static function toArray(hex : String) : ByteArray {
+            hex = hex.replace(/^0x|\s|:/gm, '');
+            var a : ByteArray = new ByteArray;
+            var len : uint = hex.length;
+            if ((len & 1) == 1) hex = "0" + hex;
+            for (var i : uint = 0; i < len; i += 2) {
+                a[i / 2] = parseInt(hex.substr(i, 2), 16);
+            }
+            return a;
+        }
+
+        /**
+         * Generates lowercase hexadecimal string from given byte-array
+         */
+        public static function fromArray(array : ByteArray, colons : Boolean = false) : String {
+            var s : String = "";
+            var len : uint = array.length;
+            for (var i : uint = 0; i < len; i++) {
+                s += ("0" + array[i].toString(16)).substr(-2, 2);
+                if (colons) {
+                    if (i < len - 1) s += ":";
+                }
+            }
+            return s;
+        }
+    }
+}