| /* |
| * 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. |
| */ |
| |
| /* |
| * $Id: XML256TableTranscoder390.hpp 568078 2007-08-21 11:43:25Z amassari $ |
| */ |
| |
| #ifndef XML256TABLETRANSCODER390_HPP |
| #define XML256TABLETRANSCODER390_HPP |
| |
| #include <xercesc/util/TransService.hpp> |
| |
| XERCES_CPP_NAMESPACE_BEGIN |
| |
| // |
| // This class implements the functionality of a common type of transcoder |
| // for an 8 bit, single byte encoding based on a set of 'to' and 'from' |
| // translation tables. Actual derived classes are trivial and just have to |
| // provide us with pointers to their tables and we do all the work. |
| // |
| class XMLUTIL_EXPORT XML256TableTranscoder390 : public XMLTranscoder |
| { |
| public : |
| // ----------------------------------------------------------------------- |
| // Public constructors and destructor |
| // ----------------------------------------------------------------------- |
| virtual ~XML256TableTranscoder390(); |
| |
| |
| // ----------------------------------------------------------------------- |
| // The virtual transcoding interface |
| // ----------------------------------------------------------------------- |
| virtual unsigned int transcodeFrom |
| ( |
| const XMLByte* const srcData |
| , const unsigned int srcCount |
| , XMLCh* const toFill |
| , const unsigned int maxChars |
| , unsigned int& bytesEaten |
| , unsigned char* const charSizes |
| ); |
| |
| virtual unsigned int transcodeTo |
| ( |
| const XMLCh* const srcData |
| , const unsigned int srcCount |
| , XMLByte* const toFill |
| , const unsigned int maxBytes |
| , unsigned int& charsEaten |
| , const UnRepOpts options |
| ); |
| |
| virtual bool canTranscodeTo |
| ( |
| const unsigned int toCheck |
| ) const; |
| |
| |
| protected : |
| // ----------------------------------------------------------------------- |
| // Hidden constructors |
| // ----------------------------------------------------------------------- |
| XML256TableTranscoder390 |
| ( |
| const XMLCh* const encodingName |
| , const unsigned int blockSize |
| , const XMLCh* const fromTable |
| , const XMLTransService::TransRec* const toTable |
| , const unsigned int toTableSize |
| , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager |
| ); |
| |
| |
| // ----------------------------------------------------------------------- |
| // Protected helper methods |
| // ----------------------------------------------------------------------- |
| XMLByte xlatOneTo |
| ( |
| const XMLCh toXlat |
| ) const; |
| |
| |
| private : |
| // ----------------------------------------------------------------------- |
| // Unimplemented constructors and operators |
| // ----------------------------------------------------------------------- |
| XML256TableTranscoder390(); |
| XML256TableTranscoder390(const XML256TableTranscoder390&); |
| XML256TableTranscoder390& operator=(const XML256TableTranscoder390&); |
| |
| |
| // ----------------------------------------------------------------------- |
| // Private data members |
| // |
| // fFromTable |
| // This is the 'from' table that we were given during construction. |
| // It is a 256 entry table of XMLCh chars. Each entry is the |
| // Unicode code point for the external encoding point of that value. |
| // So fFromTable[N] is the Unicode translation of code point N of |
| // the source encoding. |
| // |
| // We don't own this table, we just refer to it. It is assumed that |
| // the table is static, for performance reasons. |
| // |
| // fToSize |
| // The 'to' table is variable sized. This indicates how many records |
| // are in it. |
| // |
| // fToTable |
| // This is a variable sized table of TransRec structures. It must |
| // be sorted by the intCh field, i.e. the XMLCh field. It is searched |
| // binarily to find the record for a particular Unicode char. Then |
| // that record's extch field is the translation record. |
| // |
| // We don't own this table, we just refer to it. It is assumed that |
| // the table is static, for performance reasons. |
| // |
| // NOTE: There may be dups of the extCh field, since there might be |
| // multiple Unicode code points which map to the same external code |
| // point. Normally this won't happen, since the parser assumes that |
| // internalization is normalized, but we have to be prepared to do |
| // the right thing if some client code gives us non-normalized data |
| // itself. |
| // ----------------------------------------------------------------------- |
| const XMLCh* fFromTable; |
| unsigned int fToSize; |
| const XMLTransService::TransRec* fToTable; |
| }; |
| |
| XERCES_CPP_NAMESPACE_END |
| |
| #endif |