forked from Mirrors/freeswitch
99 lines
3.3 KiB
ActionScript
99 lines
3.3 KiB
ActionScript
/*
|
|
Copyright (c) 2008, Adobe Systems Incorporated
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
* Neither the name of Adobe Systems Incorporated nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
package com.adobe.utils {
|
|
|
|
import flash.utils.Endian;
|
|
|
|
/**
|
|
* Contains reusable methods for operations pertaining
|
|
* to int values.
|
|
*/
|
|
public class IntUtil {
|
|
|
|
/**
|
|
* Rotates x left n bits
|
|
*
|
|
* @langversion ActionScript 3.0
|
|
* @playerversion Flash 9.0
|
|
* @tiptext
|
|
*/
|
|
public static function rol ( x:int, n:int ):int {
|
|
return ( x << n ) | ( x >>> ( 32 - n ) );
|
|
}
|
|
|
|
/**
|
|
* Rotates x right n bits
|
|
*
|
|
* @langversion ActionScript 3.0
|
|
* @playerversion Flash 9.0
|
|
* @tiptext
|
|
*/
|
|
public static function ror ( x:int, n:int ):uint {
|
|
var nn:int = 32 - n;
|
|
return ( x << nn ) | ( x >>> ( 32 - nn ) );
|
|
}
|
|
|
|
/** String for quick lookup of a hex character based on index */
|
|
private static var hexChars:String = "0123456789abcdef";
|
|
|
|
/**
|
|
* Outputs the hex value of a int, allowing the developer to specify
|
|
* the endinaness in the process. Hex output is lowercase.
|
|
*
|
|
* @param n The int value to output as hex
|
|
* @param bigEndian Flag to output the int as big or little endian
|
|
* @return A string of length 8 corresponding to the
|
|
* hex representation of n ( minus the leading "0x" )
|
|
* @langversion ActionScript 3.0
|
|
* @playerversion Flash 9.0
|
|
* @tiptext
|
|
*/
|
|
public static function toHex( n:int, bigEndian:Boolean = false ):String {
|
|
var s:String = "";
|
|
|
|
if ( bigEndian ) {
|
|
for ( var i:int = 0; i < 4; i++ ) {
|
|
s += hexChars.charAt( ( n >> ( ( 3 - i ) * 8 + 4 ) ) & 0xF )
|
|
+ hexChars.charAt( ( n >> ( ( 3 - i ) * 8 ) ) & 0xF );
|
|
}
|
|
} else {
|
|
for ( var x:int = 0; x < 4; x++ ) {
|
|
s += hexChars.charAt( ( n >> ( x * 8 + 4 ) ) & 0xF )
|
|
+ hexChars.charAt( ( n >> ( x * 8 ) ) & 0xF );
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
}
|
|
|
|
} |