XMLASCIITranscoder.cpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 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) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #include <xercesc/util/XMLASCIITranscoder.hpp>
- #include <xercesc/util/XMLString.hpp>
- #include <xercesc/util/TranscodingException.hpp>
- #include <string.h>
- XERCES_CPP_NAMESPACE_BEGIN
- // ---------------------------------------------------------------------------
- // XMLASCIITranscoder: Constructors and Destructor
- // ---------------------------------------------------------------------------
- XMLASCIITranscoder::XMLASCIITranscoder( const XMLCh* const encodingName
- , const unsigned int blockSize) :
- XMLTranscoder(encodingName, blockSize)
- {
- }
- XMLASCIITranscoder::~XMLASCIITranscoder()
- {
- }
- // ---------------------------------------------------------------------------
- // XMLASCIITranscoder: Implementation of the transcoder API
- // ---------------------------------------------------------------------------
- unsigned int
- XMLASCIITranscoder::transcodeFrom( const XMLByte* const srcData
- , const unsigned int srcCount
- , XMLCh* const toFill
- , const unsigned int maxChars
- , unsigned int& bytesEaten
- , unsigned char* const charSizes)
- {
- // If debugging, make sure that the block size is legal
- #if defined(XERCES_DEBUG)
- checkBlockSize(maxChars);
- #endif
- //
- // Calculate the max chars we can do here. Its the lesser of the
- // max output chars and the source byte count.
- //
- const unsigned int countToDo = srcCount < maxChars ? srcCount : maxChars;
- //
- // Now loop through that many source chars and just cast each one
- // over to the XMLCh format. Check each source that its really a
- // valid ASCI char.
- //
- const XMLByte* srcPtr = srcData;
- XMLCh* outPtr = toFill;
- unsigned int countDone = 0;
- for (; countDone < countToDo; countDone++)
- {
- // Do the optimistic work up front
- if (*srcPtr < 0x80)
- {
- *outPtr++ = XMLCh(*srcPtr++);
- continue;
- }
- //
- // We got non source encoding char. If we got more than 32 chars,
- // the just break out. We'll come back here later to hit this again
- // and give an error much closer to the real source position.
- //
- if (countDone > 32)
- break;
- XMLCh tmpBuf[16];
- XMLString::binToText((unsigned int)*srcPtr, tmpBuf, 16, 16);
- ThrowXML2
- (
- TranscodingException
- , XMLExcepts::Trans_Unrepresentable
- , tmpBuf
- , getEncodingName()
- );
- }
- // Set the bytes we ate
- bytesEaten = countDone;
- // Set the char sizes to the fixed size
- memset(charSizes, 1, countDone);
- // Return the chars we transcoded
- return countDone;
- }
- unsigned int
- XMLASCIITranscoder::transcodeTo(const XMLCh* const srcData
- , const unsigned int srcCount
- , XMLByte* const toFill
- , const unsigned int maxBytes
- , unsigned int& charsEaten
- , const UnRepOpts options)
- {
- // If debugging, make sure that the block size is legal
- #if defined(XERCES_DEBUG)
- checkBlockSize(maxBytes);
- #endif
- //
- // Calculate the max chars we can do here. Its the lesser of the
- // max output chars and the source byte count.
- //
- const unsigned int countToDo = srcCount < maxBytes ? srcCount : maxBytes;
- const XMLCh* srcPtr = srcData;
- XMLByte* outPtr = toFill;
- for (unsigned int index = 0; index < countToDo; index++)
- {
- // If its legal, do it and jump back to the top
- if (*srcPtr < 0x80)
- {
- *outPtr++ = XMLByte(*srcPtr++);
- continue;
- }
- //
- // Its not representable so use a replacement char. According to
- // the options, either throw or use the replacement.
- //
- if (options == UnRep_Throw)
- {
- XMLCh tmpBuf[16];
- XMLString::binToText((unsigned int)*srcPtr, tmpBuf, 16, 16);
- ThrowXML2
- (
- TranscodingException
- , XMLExcepts::Trans_Unrepresentable
- , tmpBuf
- , getEncodingName()
- );
- }
- // Use the replacement char
- *outPtr++ = 0x1A;
- srcPtr++;
- }
- // Set the chars we ate
- charsEaten = countToDo;
- // Return the byte we transcoded
- return countToDo;
- }
- bool XMLASCIITranscoder::canTranscodeTo(const unsigned int toCheck) const
- {
- return (toCheck < 0x80);
- }
- XERCES_CPP_NAMESPACE_END