66 lines
1.5 KiB
ActionScript
66 lines
1.5 KiB
ActionScript
/**
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* Hex
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*
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* Utility class to convert Hex strings to ByteArray or String types.
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* Copyright (c) 2007 Henri Torgemane
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*
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* See LICENSE.txt for full license information.
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*/
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package com.hurlant.util
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{
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import flash.utils.ByteArray;
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public class Hex
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{
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/**
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* Support straight hex, or colon-laced hex.
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* (that means 23:03:0e:f0, but *NOT* 23:3:e:f0)
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* Whitespace characters are ignored.
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*/
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public static function toArray(hex:String):ByteArray {
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hex = hex.replace(/\s|:/gm,'');
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var a:ByteArray = new ByteArray;
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if (hex.length&1==1) hex="0"+hex;
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for (var i:uint=0;i<hex.length;i+=2) {
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a[i/2] = parseInt(hex.substr(i,2),16);
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}
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return a;
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}
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public static function fromArray(array:ByteArray, colons:Boolean=false):String {
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var s:String = "";
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for (var i:uint=0;i<array.length;i++) {
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s+=("0"+array[i].toString(16)).substr(-2,2);
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if (colons) {
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if (i<array.length-1) s+=":";
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}
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}
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return s;
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}
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/**
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*
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* @param hex
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* @return a UTF-8 string decoded from hex
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*
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*/
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public static function toString(hex:String):String {
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var a:ByteArray = toArray(hex);
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return a.readUTFBytes(a.length);
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}
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/**
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*
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* @param str
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* @return a hex string encoded from the UTF-8 string str
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*
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*/
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public static function fromString(str:String, colons:Boolean=false):String {
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var a:ByteArray = new ByteArray;
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a.writeUTFBytes(str);
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return fromArray(a, colons);
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}
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}
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} |