peiyongz 2003/12/16 08:56:51
Added: c/src/xercesc/internal BinMemOutputStream.cpp
BinMemOutputStream.hpp
Log:
BinMemOutputStream
Revision Changes Path
1.1 xml-xerces/c/src/xercesc/internal/BinMemOutputStream.cpp
Index: BinMemOutputStream.cpp
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation, and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.ibm.com . For more information
* on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/*
* $Id: BinMemOutputStream.cpp,v 1.1 2003/12/16 16:56:51 peiyongz Exp $
* $Log: BinMemOutputStream.cpp,v $
* Revision 1.1 2003/12/16 16:56:51 peiyongz
* BinMemOutputStream
*
*
*/
#include <xercesc/internal/BinMemOutputStream.hpp>
#include <xercesc/util/XMLString.hpp>
#include <string.h>
XERCES_CPP_NAMESPACE_BEGIN
BinMemOutputStream::BinMemOutputStream( int initCapacity
, MemoryManager* const manager)
: fMemoryManager(manager)
, fDataBuf(0)
, fIndex(0)
, fCapacity(initCapacity)
{
// Buffer is one larger than capacity, to allow for zero term
fDataBuf = (XMLByte*) fMemoryManager->allocate
(
(fCapacity + 4) * sizeof(XMLByte)
);
// Keep it null terminated
fDataBuf[0] = XMLByte(0);
}
BinMemOutputStream::~BinMemOutputStream()
{
fMemoryManager->deallocate(fDataBuf);
}
void BinMemOutputStream::writeBytes( XMLByte* const toGo
, const unsigned int maxToWrite)
{
if (maxToWrite)
{
insureCapacity(maxToWrite);
memcpy(&fDataBuf[fIndex], toGo, maxToWrite * sizeof(XMLByte));
fIndex += maxToWrite;
}
}
const XMLByte* BinMemOutputStream::getRawBuffer() const
{
fDataBuf[fIndex] = 0;
fDataBuf[fIndex + 1] = 0;
fDataBuf[fIndex + 2] = 0;
fDataBuf[fIndex + 3] = 0;
return fDataBuf;
}
void BinMemOutputStream::reset()
{
fIndex = 0;
for (int i = 0; i < 4; i++)
{
fDataBuf[fIndex + i] = 0;
}
}
unsigned int BinMemOutputStream::curPos() const
{
return fIndex;
}
// ---------------------------------------------------------------------------
// BinMemOutputStream: Private helper methods
// ---------------------------------------------------------------------------
void BinMemOutputStream::insureCapacity(const unsigned int extraNeeded)
{
// If we can handle it, do nothing yet
if (fIndex + extraNeeded < fCapacity)
return;
// Oops, not enough room. Calc new capacity and allocate new buffer
const unsigned int newCap = (unsigned int)((fIndex + extraNeeded) * 2);
XMLByte* newBuf = (XMLByte*) fMemoryManager->allocate
(
(newCap+4) * sizeof(XMLByte)
);
// Copy over the old stuff
memcpy(newBuf, fDataBuf, fCapacity * sizeof(XMLByte) + 4);
// Clean up old buffer and store new stuff
fMemoryManager->deallocate(fDataBuf);
fDataBuf = newBuf;
fCapacity = newCap;
}
XERCES_CPP_NAMESPACE_END
1.1 xml-xerces/c/src/xercesc/internal/BinMemOutputStream.hpp
Index: BinMemOutputStream.hpp
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation, and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.ibm.com . For more information
* on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/*
* $Id: BinMemOutputStream.hpp,v 1.1 2003/12/16 16:56:51 peiyongz Exp $
* $Log: BinMemOutputStream.hpp,v $
* Revision 1.1 2003/12/16 16:56:51 peiyongz
* BinMemOutputStream
*
*
*/
#ifndef BINMEMOUTPUTSTREAM_HEADER_GUARD_
#define BINMEMOUTPUTSTREAM_HEADER_GUARD_
#include <xercesc/framework/BinOutputStream.hpp>
#include <xercesc/util/PlatformUtils.hpp>
XERCES_CPP_NAMESPACE_BEGIN
class XMLUTIL_EXPORT BinMemOutputStream : public BinOutputStream
{
public :
// -----------------------------------------------------------------------
// Constructors and Destructor
// -----------------------------------------------------------------------
~BinMemOutputStream();
BinMemOutputStream
(
int initCapacity = 1023
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
);
// -----------------------------------------------------------------------
// Implementation of the output stream interface
// -----------------------------------------------------------------------
virtual unsigned int curPos() const;
virtual void writeBytes
(
XMLByte* const toGo
, const unsigned int maxToWrite
) ;
// -----------------------------------------------------------------------
// Getter methods
// -----------------------------------------------------------------------
const XMLByte* getRawBuffer() const;
unsigned int getSize() const;
void reset();
private :
// -----------------------------------------------------------------------
// Unimplemented methods.
// -----------------------------------------------------------------------
BinMemOutputStream(const BinMemOutputStream&);
BinMemOutputStream& operator=(const BinMemOutputStream&);
// -----------------------------------------------------------------------
// Private helpers
// -----------------------------------------------------------------------
void insureCapacity(const unsigned int extraNeeded);
// -----------------------------------------------------------------------
// Private data members
//
// fDataBuf
// The pointer to the buffer data. Its grown as needed. Its always
// one larger than fCapacity, to leave room for the null terminator.
//
// fIndex
// The current index into the buffer, as characters are appended
// to it. If its zero, then the buffer is empty.
//
// fCapacity
// The current capacity of the buffer. Its actually always one
// larger, to leave room for the null terminator.
//
// -----------------------------------------------------------------------
MemoryManager* fMemoryManager;
XMLByte* fDataBuf;
unsigned int fIndex;
unsigned int fCapacity;
};
XERCES_CPP_NAMESPACE_END
#endif
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