| /* |
| * 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: LocalFileFormatTarget.cpp 568078 2007-08-21 11:43:25Z amassari $ |
| */ |
| |
| #include <xercesc/framework/LocalFileFormatTarget.hpp> |
| #include <xercesc/framework/MemoryManager.hpp> |
| #include <xercesc/util/IOException.hpp> |
| #include <xercesc/util/OutOfMemoryException.hpp> |
| #include <assert.h> |
| #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, manager); |
| |
| if (fSource == (FileHandle) XERCES_Invalid_File_Handle) |
| ThrowXMLwithMemMgr1(IOException, XMLExcepts::File_CouldNotOpenFile, fileName, fMemoryManager); |
| |
| // 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, manager); |
| |
| if (fSource == (FileHandle) XERCES_Invalid_File_Handle) |
| ThrowXMLwithMemMgr1(IOException, XMLExcepts::File_CouldNotOpenFile, fileName, fMemoryManager); |
| |
| // 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); |
| |
| fMemoryManager->deallocate(fDataBuf);//delete [] fDataBuf; |
| } |
| |
| void LocalFileFormatTarget::flush() |
| { |
| flushBuffer(); |
| } |
| |
| void LocalFileFormatTarget::writeChars(const XMLByte* const toWrite |
| , const unsigned int count |
| , XMLFormatter * const ) |
| { |
| if (count) { |
| if (insureCapacity(count)) |
| { |
| memcpy(&fDataBuf[fIndex], toWrite, count * sizeof(XMLByte)); |
| fIndex += count; |
| } |
| else |
| { |
| //flush whatever we have in the buffer and the incoming byte stream |
| flushBuffer(); |
| XMLPlatformUtils::writeBufferToFile(fSource, (long) count, toWrite, fMemoryManager); |
| } |
| } |
| |
| 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, fMemoryManager); |
| fIndex = 0; |
| fDataBuf[0] = 0; |
| fDataBuf[fIndex + 1] = 0; |
| fDataBuf[fIndex + 2] = 0; |
| fDataBuf[fIndex + 3] = 0; |
| } |
| |
| /*** |
| * |
| * if the current capacity is not enough, and we can not have |
| * enough memory for the new buffer, we got to notify the caller |
| * |
| ***/ |
| bool LocalFileFormatTarget::insureCapacity(const unsigned int extraNeeded) |
| { |
| // If we can handle it, do nothing yet |
| if (fIndex + extraNeeded < fCapacity) |
| return true; |
| |
| // Oops, not enough room. Calc new capacity and allocate new buffer |
| const unsigned int newCap = (unsigned int)((fIndex + extraNeeded) * 2); |
| XMLByte* newBuf = 0; |
| |
| try |
| { |
| newBuf = (XMLByte*) fMemoryManager->allocate |
| ( |
| (newCap+4) * sizeof(XMLByte) |
| );//new XMLByte[newCap+4]; |
| } |
| catch(const OutOfMemoryException&) |
| { |
| return false; |
| } |
| |
| assert(newBuf); |
| |
| // 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(); |
| return true; |
| } |
| |
| XERCES_CPP_NAMESPACE_END |
| |
| |