HexBin.cpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. 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.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
- * ITS 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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 2001, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: HexBin.cpp,v $
- * Revision 1.1 2001/05/16 15:25:38 tng
- * Schema: Add Base64 and HexBin. By Pei Yong Zhang.
- *
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #include <util/HexBin.hpp>
- #include <util/XMLUniDefs.hpp>
- #include <util/XMLString.hpp>
- // ---------------------------------------------------------------------------
- // constants
- // ---------------------------------------------------------------------------
- static const int BASELENGTH = 255;
- // ---------------------------------------------------------------------------
- // class data member
- // ---------------------------------------------------------------------------
- bool HexBin::hexNumberTable[BASELENGTH];
- bool HexBin::isInitialized = false;
- int HexBin::getDataLength(const XMLCh* const hexData)
- {
- if (!isArrayByteHex(hexData))
- return -1;
- return XMLString::stringLen(hexData)/2;
- }
- bool HexBin::isArrayByteHex(const XMLCh* const hexData)
- {
- if ( !isInitialized )
- init();
- if (( hexData == 0 ) || ( *hexData == 0 )) // zero length
- return false;
- int strLen = XMLString::stringLen(hexData);
- if ( strLen%2 != 0 )
- return false;
- for ( int i = 0; i < strLen; i++ )
- if( !isHex(hexData[i]) )
- return false;
- return true;
- }
- // -----------------------------------------------------------------------
- // Helper methods
- // -----------------------------------------------------------------------
- bool HexBin::isHex(const XMLCh& octect)
- {
- // sanity check to avoid out-of-bound index
- if (( octect >= BASELENGTH ) || ( octect < 0 ))
- return false;
- return (hexNumberTable[octect]);
- }
- void HexBin::init()
- {
- if ( isInitialized )
- return;
- int i;
- for ( i = 0; i < BASELENGTH; i++ )
- hexNumberTable[i] = false;
- for ( i = chDigit_9; i >= chDigit_0; i-- )
- hexNumberTable[i] = true;
- for ( i = chLatin_F; i >= chLatin_A; i-- )
- hexNumberTable[i] = true;
- for ( i = chLatin_f; i >= chLatin_a; i-- )
- hexNumberTable[i] = true;
- isInitialized = true;
- }