[2674] | 1 | /* |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 3 | * contributor license agreements. See the NOTICE file distributed with |
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| 4 | * this work for additional information regarding copyright ownership. |
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 6 | * (the "License"); you may not use this file except in compliance with |
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| 7 | * the License. You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | |
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| 18 | #ifndef XMLUTF8TRANSCODER_HPP |
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| 19 | #define XMLUTF8TRANSCODER_HPP |
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| 20 | |
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| 21 | #include <xercesc/util/XercesDefs.hpp> |
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| 22 | #include <xercesc/util/TransService.hpp> |
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| 23 | #include <xercesc/util/UTFDataFormatException.hpp> |
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| 24 | |
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| 25 | XERCES_CPP_NAMESPACE_BEGIN |
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| 26 | |
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| 27 | // |
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| 28 | // This class provides an implementation of the XMLTranscoder interface |
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| 29 | // for a simple UTF8 transcoder. The parser does some encodings |
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| 30 | // intrinsically without depending upon external transcoding services. |
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| 31 | // To make everything more orthagonal, we implement these internal |
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| 32 | // transcoders using the same transcoder abstraction as the pluggable |
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| 33 | // transcoding services do. |
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| 34 | // |
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| 35 | class XMLUTIL_EXPORT XMLUTF8Transcoder : public XMLTranscoder |
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| 36 | { |
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| 37 | public : |
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| 38 | // ----------------------------------------------------------------------- |
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| 39 | // Public constructors and destructor |
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| 40 | // ----------------------------------------------------------------------- |
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| 41 | XMLUTF8Transcoder |
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| 42 | ( |
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| 43 | const XMLCh* const encodingName |
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| 44 | , const unsigned int blockSize |
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| 45 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager |
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| 46 | ); |
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| 47 | |
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| 48 | virtual ~XMLUTF8Transcoder(); |
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| 49 | |
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| 50 | |
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| 51 | // ----------------------------------------------------------------------- |
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| 52 | // Implementation of the XMLTranscoder interface |
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| 53 | // ----------------------------------------------------------------------- |
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| 54 | virtual unsigned int transcodeFrom |
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| 55 | ( |
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| 56 | const XMLByte* const srcData |
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| 57 | , const unsigned int srcCount |
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| 58 | , XMLCh* const toFill |
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| 59 | , const unsigned int maxChars |
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| 60 | , unsigned int& bytesEaten |
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| 61 | , unsigned char* const charSizes |
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| 62 | ); |
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| 63 | |
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| 64 | virtual unsigned int transcodeTo |
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| 65 | ( |
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| 66 | const XMLCh* const srcData |
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| 67 | , const unsigned int srcCount |
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| 68 | , XMLByte* const toFill |
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| 69 | , const unsigned int maxBytes |
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| 70 | , unsigned int& charsEaten |
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| 71 | , const UnRepOpts options |
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| 72 | ); |
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| 73 | |
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| 74 | virtual bool canTranscodeTo |
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| 75 | ( |
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| 76 | const unsigned int toCheck |
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| 77 | ) const; |
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| 78 | |
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| 79 | |
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| 80 | private : |
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| 81 | |
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| 82 | inline void checkTrailingBytes( |
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| 83 | const XMLByte toCheck |
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| 84 | , const unsigned int trailingBytes |
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| 85 | , const unsigned int position |
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| 86 | ) const; |
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| 87 | |
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| 88 | private : |
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| 89 | // ----------------------------------------------------------------------- |
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| 90 | // Unimplemented constructors and operators |
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| 91 | // ----------------------------------------------------------------------- |
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| 92 | XMLUTF8Transcoder(const XMLUTF8Transcoder&); |
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| 93 | XMLUTF8Transcoder& operator=(const XMLUTF8Transcoder&); |
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| 94 | }; |
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| 95 | |
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| 96 | inline |
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| 97 | void XMLUTF8Transcoder::checkTrailingBytes(const XMLByte toCheck |
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| 98 | , const unsigned int trailingBytes |
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| 99 | , const unsigned int position) const |
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| 100 | { |
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| 101 | |
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| 102 | if((toCheck & 0xC0) != 0x80) |
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| 103 | { |
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| 104 | char len[2] = {(char)(trailingBytes+0x31), 0}; |
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| 105 | char pos[2] = {(char)(position+0x31), 0}; |
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| 106 | char byte[2] = {toCheck,0}; |
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| 107 | ThrowXMLwithMemMgr3(UTFDataFormatException, XMLExcepts::UTF8_FormatError, pos, byte, len, getMemoryManager()); |
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| 108 | } |
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| 109 | |
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| 110 | } |
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| 111 | |
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| 112 | XERCES_CPP_NAMESPACE_END |
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| 113 | |
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| 114 | #endif |
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