| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| // --------------------------------------------------------------------------- |
| // Includes |
| // --------------------------------------------------------------------------- |
| #include <xercesc/util/XMLASCIITranscoder.hpp> |
| #include <xercesc/util/XMLString.hpp> |
| #include <xercesc/util/TranscodingException.hpp> |
| #include <cstring> |
| |
| namespace XERCES_CPP_NAMESPACE { |
| |
| // --------------------------------------------------------------------------- |
| // XMLASCIITranscoder: Constructors and Destructor |
| // --------------------------------------------------------------------------- |
| XMLASCIITranscoder::XMLASCIITranscoder( const XMLCh* const encodingName |
| , const XMLSize_t blockSize |
| , MemoryManager* const manager) : |
| |
| XMLTranscoder(encodingName, blockSize, manager) |
| { |
| } |
| |
| |
| XMLASCIITranscoder::~XMLASCIITranscoder() |
| { |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| // XMLASCIITranscoder: Implementation of the transcoder API |
| // --------------------------------------------------------------------------- |
| XMLSize_t |
| XMLASCIITranscoder::transcodeFrom( const XMLByte* const srcData |
| , const XMLSize_t srcCount |
| , XMLCh* const toFill |
| , const XMLSize_t maxChars |
| , XMLSize_t& bytesEaten |
| , unsigned char* const charSizes) |
| { |
| // |
| // Calculate the max chars we can do here. Its the lesser of the |
| // max output chars and the source byte count. |
| // |
| const XMLSize_t 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; |
| XMLSize_t 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[17]; |
| XMLString::binToText((unsigned int)*srcPtr, tmpBuf, 16, 16, getMemoryManager()); |
| ThrowXMLwithMemMgr2 |
| ( |
| TranscodingException |
| , XMLExcepts::Trans_Unrepresentable |
| , tmpBuf |
| , getEncodingName() |
| , getMemoryManager() |
| ); |
| } |
| |
| // 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; |
| } |
| |
| |
| XMLSize_t |
| XMLASCIITranscoder::transcodeTo(const XMLCh* const srcData |
| , const XMLSize_t srcCount |
| , XMLByte* const toFill |
| , const XMLSize_t maxBytes |
| , XMLSize_t& charsEaten |
| , const UnRepOpts options) |
| { |
| // |
| // Calculate the max chars we can do here. Its the lesser of the |
| // max output chars and the source byte count. |
| // |
| const XMLSize_t countToDo = srcCount < maxBytes ? srcCount : maxBytes; |
| |
| const XMLCh* srcPtr = srcData; |
| XMLByte* outPtr = toFill; |
| for (XMLSize_t 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[17]; |
| XMLString::binToText((unsigned int)*srcPtr, tmpBuf, 16, 16, getMemoryManager()); |
| ThrowXMLwithMemMgr2 |
| ( |
| TranscodingException |
| , XMLExcepts::Trans_Unrepresentable |
| , tmpBuf |
| , getEncodingName() |
| , getMemoryManager() |
| ); |
| } |
| |
| // 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) |
| { |
| return (toCheck < 0x80); |
| } |
| |
| } |