/*
* 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>
// ---------------------------------------------------------------------------
// 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);
}