135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: BinMemInputStream.hpp 670359 2008-06-22 13:43:45Z borisk $
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*/
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#if !defined(XERCESC_INCLUDE_GUARD_BINMEMINPUTSTREAM_HPP)
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#define XERCESC_INCLUDE_GUARD_BINMEMINPUTSTREAM_HPP
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#include <xercesc/util/BinInputStream.hpp>
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#include <xercesc/util/PlatformUtils.hpp>
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XERCES_CPP_NAMESPACE_BEGIN
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class XMLUTIL_EXPORT BinMemInputStream : public BinInputStream
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{
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public :
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// -----------------------------------------------------------------------
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// Class specific types
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// -----------------------------------------------------------------------
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enum BufOpts
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{
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BufOpt_Adopt
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, BufOpt_Copy
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, BufOpt_Reference
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};
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// -----------------------------------------------------------------------
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// Constructors and Destructor
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// -----------------------------------------------------------------------
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BinMemInputStream
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(
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const XMLByte* const initData
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, const XMLSize_t capacity
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, const BufOpts bufOpt = BufOpt_Copy
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, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
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);
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virtual ~BinMemInputStream();
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// -----------------------------------------------------------------------
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// Stream management methods
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// -----------------------------------------------------------------------
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void reset();
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// -----------------------------------------------------------------------
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// Implementation of the input stream interface
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// -----------------------------------------------------------------------
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virtual XMLFilePos curPos() const;
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virtual XMLSize_t readBytes
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(
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XMLByte* const toFill
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, const XMLSize_t maxToRead
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);
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virtual const XMLCh* getContentType() const;
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inline XMLSize_t getSize() const;
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private :
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// -----------------------------------------------------------------------
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// Unimplemented constructors and operators
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// -----------------------------------------------------------------------
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BinMemInputStream(const BinMemInputStream&);
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BinMemInputStream& operator=(const BinMemInputStream&);
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// -----------------------------------------------------------------------
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// Private data members
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//
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// fBuffer
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// The buffer of bytes that we are streaming.
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//
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// fBufOpt
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// Indicates the ownership status of the buffer. The caller can have
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// us adopt it (we delete it), reference it, or just make our own
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// copy of it.
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//
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// fCapacity
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// The size of the buffer being streamed.
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//
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// fCurIndex
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// The current index where the next byte will be read from. When it
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// hits fCapacity, we are done.
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// -----------------------------------------------------------------------
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const XMLByte* fBuffer;
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BufOpts fBufOpt;
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XMLSize_t fCapacity;
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XMLSize_t fCurIndex;
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MemoryManager* fMemoryManager;
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};
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// ---------------------------------------------------------------------------
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// BinMemInputStream: Stream management methods
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// ---------------------------------------------------------------------------
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inline void BinMemInputStream::reset()
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{
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fCurIndex = 0;
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}
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// ---------------------------------------------------------------------------
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// BinMemInputStream: Implementation of the input stream interface
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// ---------------------------------------------------------------------------
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inline XMLFilePos BinMemInputStream::curPos() const
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{
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return fCurIndex;
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}
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inline XMLSize_t BinMemInputStream::getSize() const
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{
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return fCapacity;
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}
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XERCES_CPP_NAMESPACE_END
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#endif
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