LocalFileFormatTarget.cpp
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上传日期:2013-06-25
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词法分析
开发平台:
Visual C++
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2002 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 apache@apache.org.
- *
- * 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: LocalFileFormatTarget.cpp,v 1.7 2003/05/16 21:36:55 knoaman Exp $
- * $Log: LocalFileFormatTarget.cpp,v $
- * Revision 1.7 2003/05/16 21:36:55 knoaman
- * Memory manager implementation: Modify constructors to pass in the memory manager.
- *
- * Revision 1.6 2003/05/15 18:26:07 knoaman
- * Partial implementation of the configurable memory manager.
- *
- * Revision 1.5 2003/01/24 20:20:22 tng
- * Add method flush to XMLFormatTarget
- *
- * Revision 1.4 2003/01/09 20:59:44 tng
- * [Bug 15928] Output with LocalFileFormatTarget fails silently.
- *
- * Revision 1.3 2002/11/27 18:09:25 tng
- * [Bug 13447] Performance: Using LocalFileFormatTarget with DOMWriter is very slow.
- *
- * Revision 1.2 2002/11/04 15:00:21 tng
- * C++ Namespace Support.
- *
- * Revision 1.1 2002/06/19 21:59:26 peiyongz
- * DOM3:DOMSave Interface support: LocalFileFormatTarget
- *
- *
- */
- #include <xercesc/framework/LocalFileFormatTarget.hpp>
- #include <xercesc/framework/MemoryManager.hpp>
- #include <xercesc/util/IOException.hpp>
- #include <string.h>
- XERCES_CPP_NAMESPACE_BEGIN
- LocalFileFormatTarget::LocalFileFormatTarget( const XMLCh* const fileName
- , MemoryManager* const manager)
- : fSource(0)
- , fDataBuf(0)
- , fIndex(0)
- , fCapacity(1023)
- , fMemoryManager(manager)
- {
- fSource = XMLPlatformUtils::openFileToWrite(fileName);
- if (!fSource)
- ThrowXML1(IOException, XMLExcepts::File_CouldNotOpenFile, fileName);
- // Buffer is one larger than capacity, to allow for zero term
- fDataBuf = (XMLByte*) fMemoryManager->allocate
- (
- (fCapacity+4) * sizeof(XMLByte)
- );//new XMLByte[fCapacity+4];
- // Keep it null terminated
- fDataBuf[0] = XMLByte(0);
- }
- LocalFileFormatTarget::LocalFileFormatTarget( const char* const fileName
- , MemoryManager* const manager)
- : fSource(0)
- , fDataBuf(0)
- , fIndex(0)
- , fCapacity(1023)
- , fMemoryManager(manager)
- {
- fSource = XMLPlatformUtils::openFileToWrite(fileName);
- if (!fSource)
- ThrowXML1(IOException, XMLExcepts::File_CouldNotOpenFile, fileName);
- // Buffer is one larger than capacity, to allow for zero term
- fDataBuf = (XMLByte*) fMemoryManager->allocate
- (
- (fCapacity+4) * sizeof(XMLByte)
- );//new XMLByte[fCapacity+4];
- // Keep it null terminated
- fDataBuf[0] = XMLByte(0);
- }
- LocalFileFormatTarget::~LocalFileFormatTarget()
- {
- // flush remaining buffer before destroy
- flushBuffer();
- if (fSource)
- XMLPlatformUtils::closeFile(fSource);
- fMemoryManager->deallocate(fDataBuf);//delete [] fDataBuf;
- }
- void LocalFileFormatTarget::flush()
- {
- flushBuffer();
- }
- void LocalFileFormatTarget::writeChars(const XMLByte* const toWrite
- , const unsigned int count
- , XMLFormatter * const )
- {
- if (count) {
- insureCapacity(count);
- memcpy(&fDataBuf[fIndex], toWrite, count * sizeof(XMLByte));
- fIndex += count;
- }
- return;
- }
- void LocalFileFormatTarget::flushBuffer()
- {
- // Exception thrown in writeBufferToFile, if any, will be propagated to
- // the XMLFormatter and then to the DOMWriter, which may notify
- // application through DOMErrorHandler, if any.
- XMLPlatformUtils::writeBufferToFile(fSource, (long) fIndex, fDataBuf);
- fIndex = 0;
- fDataBuf[0] = 0;
- fDataBuf[fIndex + 1] = 0;
- fDataBuf[fIndex + 2] = 0;
- fDataBuf[fIndex + 3] = 0;
- }
- void LocalFileFormatTarget::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)
- );//new XMLByte[newCap+4];
- // Copy over the old stuff
- memcpy(newBuf, fDataBuf, fCapacity * sizeof(XMLByte) + 4);
- // Clean up old buffer and store new stuff
- fMemoryManager->deallocate(fDataBuf); //delete [] fDataBuf;
- fDataBuf = newBuf;
- fCapacity = newCap;
- // flush the buffer too
- flushBuffer();
- }
- XERCES_CPP_NAMESPACE_END