Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / BinHexEncoder.cs / 1 / BinHexEncoder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml { internal abstract class BinHexEncoder { private const string s_hexDigits = "0123456789ABCDEF"; private const int CharsChunkSize = 128; internal static void Encode( byte[] buffer, int index, int count, XmlWriter writer ) { if ( buffer == null ) { throw new ArgumentNullException( "buffer" ); } if ( index < 0 ) { throw new ArgumentOutOfRangeException( "index" ); } if ( count < 0 ) { throw new ArgumentOutOfRangeException( "count" ); } if ( count > buffer.Length - index ) { throw new ArgumentOutOfRangeException( "count" ); } char[] chars = new char[ ( count * 2 ) < CharsChunkSize ? ( count * 2 ) : CharsChunkSize ]; int endIndex = index + count; while ( index < endIndex ) { int cnt = ( count < CharsChunkSize/2 ) ? count : CharsChunkSize/2; int charCount = Encode( buffer, index, cnt, chars ); writer.WriteRaw( chars, 0, charCount ); index += cnt; count -= cnt; } } internal static string Encode(byte[] inArray, int offsetIn, int count) { if (null == inArray) { throw new ArgumentNullException("inArray"); } if (0 > offsetIn) { throw new ArgumentOutOfRangeException("offsetIn"); } if (0 > count) { throw new ArgumentOutOfRangeException("count"); } if (count > inArray.Length - offsetIn) { throw new ArgumentOutOfRangeException("count"); } char[] outArray = new char[2 * count]; int lenOut = Encode(inArray, offsetIn, count, outArray); return new String(outArray, 0, lenOut); } private static int Encode(byte[] inArray, int offsetIn, int count, char[] outArray) { int curOffsetOut =0, offsetOut = 0; byte b; int lengthOut = outArray.Length; for (int j=0; j> 4]; if (curOffsetOut == lengthOut) { break; } outArray[curOffsetOut ++] = s_hexDigits[b & 0xF]; if (curOffsetOut == lengthOut) { break; } } return curOffsetOut - offsetOut; } // function } // class } // namespace // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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