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Diffstat (limited to 'vendors/uploadify/com/adobe/utils/IntUtil.as')
-rw-r--r-- | vendors/uploadify/com/adobe/utils/IntUtil.as | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/vendors/uploadify/com/adobe/utils/IntUtil.as b/vendors/uploadify/com/adobe/utils/IntUtil.as new file mode 100644 index 000000000..8c812fe08 --- /dev/null +++ b/vendors/uploadify/com/adobe/utils/IntUtil.as @@ -0,0 +1,99 @@ +/*
+ 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;
+ }
+ }
+
+}
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