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# LocalFileFormatTarget.hpp

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    00001 /*
    00002  * Copyright 2002,2004 The Apache Software Foundation.
    00003  *
    00004  * Licensed under the Apache License, Version 2.0 (the "License");
    00005  * you may not use this file except in compliance with the License.
    00006  * You may obtain a copy of the License at
    00007  *
    00008  *      http://www.apache.org/licenses/LICENSE-2.0
    00009  *
    00010  * Unless required by applicable law or agreed to in writing, software
    00011  * distributed under the License is distributed on an "AS IS" BASIS,
    00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    00013  * See the License for the specific language governing permissions and
    00014  * limitations under the License.
    00015  */
    00016
    00017 /*
    00018  * $Id: LocalFileFormatTarget.hpp,v 1.7 2004/09/08 13:55:57 peiyongz Exp $
    00019  * $Log: LocalFileFormatTarget.hpp,v $
    00020  * Revision 1.7  2004/09/08 13:55:57  peiyongz
    00021  * Apache License Version 2.0
    00022  *
    00023  * Revision 1.6  2003/05/16 21:36:55  knoaman
    00024  * Memory manager implementation: Modify constructors to pass in the memory manager.
    00025  *
    00026  * Revision 1.5  2003/05/15 18:26:07  knoaman
    00027  * Partial implementation of the configurable memory manager.
    00028  *
    00029  * Revision 1.4  2003/01/24 20:20:22  tng
    00030  * Add method flush to XMLFormatTarget
    00031  *
    00032  * Revision 1.3  2002/11/27 18:09:25  tng
    00033  * [Bug 13447] Performance: Using LocalFileFormatTarget with DOMWriter is very slow.
    00034  *
    00035  * Revision 1.2  2002/11/04 15:00:21  tng
    00036  * C++ Namespace Support.
    00037  *
    00038  * Revision 1.1  2002/06/19 21:59:26  peiyongz
    00039  * DOM3:DOMSave Interface support: LocalFileFormatTarget
    00040  *
    00041  *
    00042  */
    00043
    00044 #ifndef LocalFileFormatTarget_HEADER_GUARD_
    00045 #define LocalFileFormatTarget_HEADER_GUARD_
    00046
    00047 #include <xercesc/framework/XMLFormatter.hpp>
    00048
    00049 XERCES_CPP_NAMESPACE_BEGIN
    00050
    00051 class  LocalFileFormatTarget : public XMLFormatTarget {
    00052 public:
    00053
    00056     LocalFileFormatTarget
    00057     (
    00058         const XMLCh* const
    00059         , MemoryManager* const  manager = XMLPlatformUtils::fgMemoryManager
    00060     );
    00061
    00062     LocalFileFormatTarget
    00063     (
    00064         const char* const
    00065         , MemoryManager* const  manager = XMLPlatformUtils::fgMemoryManager
    00066     );
    00067
    00068     ~LocalFileFormatTarget();
    00070
    00071     // -----------------------------------------------------------------------
    00072     //  Implementations of the format target interface
    00073     // -----------------------------------------------------------------------
    00074     virtual void writeChars(const XMLByte* const toWrite
    00075                           , const unsigned int   count
    00076                           , XMLFormatter* const  formatter);
    00077
    00078     virtual void flush();
    00079
    00080 private:
    00081     // -----------------------------------------------------------------------
    00082     //  Unimplemented methods.
    00083     // -----------------------------------------------------------------------
    00084     LocalFileFormatTarget(const LocalFileFormatTarget&);
    00085     LocalFileFormatTarget& operator=(const LocalFileFormatTarget&);
    00086
    00087     // -----------------------------------------------------------------------
    00088     //  Private helpers
    00089     // -----------------------------------------------------------------------
    00090     void flushBuffer();
    00091     void insureCapacity(const unsigned int extraNeeded);
    00092
    00093     // -----------------------------------------------------------------------
    00094     //  Private data members
    00095     //
    00096     //  fSource
    00097     //      The source file that we represent. The FileHandle type is defined
    00098     //      per platform.
    00099     //
    00100     //  fDataBuf
    00101     //      The pointer to the buffer data. Its always
    00102     //      one larger than fCapacity, to leave room for the null terminator.
    00103     //
    00104     //  fIndex
    00105     //      The current index into the buffer, as characters are appended
    00106     //      to it. If its zero, then the buffer is empty.
    00107     //
    00108     //  fCapacity
    00109     //      The current capacity of the buffer. Its actually always one
    00110     //      larger, to leave room for the null terminator.
    00111     // -----------------------------------------------------------------------
    00112     FileHandle      fSource;
    00113     XMLByte*        fDataBuf;
    00114     unsigned int    fIndex;
    00115     unsigned int    fCapacity;
    00116     MemoryManager*  fMemoryManager;
    00117 };
    00118
    00119
    00120 XERCES_CPP_NAMESPACE_END
    00121
    00122 #endif
    00123

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