GME
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00001 /* 00002 * Licensed to the Apache Software Foundation (ASF) under one or more 00003 * contributor license agreements. See the NOTICE file distributed with 00004 * this work for additional information regarding copyright ownership. 00005 * The ASF licenses this file to You under the Apache License, Version 2.0 00006 * (the "License"); you may not use this file except in compliance with 00007 * the License. You may obtain a copy of the License at 00008 * 00009 * http://www.apache.org/licenses/LICENSE-2.0 00010 * 00011 * Unless required by applicable law or agreed to in writing, software 00012 * distributed under the License is distributed on an "AS IS" BASIS, 00013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00014 * See the License for the specific language governing permissions and 00015 * limitations under the License. 00016 */ 00017 00018 /* 00019 * $Id: BinMemInputStream.cpp 670359 2008-06-22 13:43:45Z borisk $ 00020 */ 00021 00022 00023 // --------------------------------------------------------------------------- 00024 // Includes 00025 // --------------------------------------------------------------------------- 00026 #include <xercesc/util/BinMemInputStream.hpp> 00027 #include <xercesc/framework/MemoryManager.hpp> 00028 #include <string.h> 00029 00030 XERCES_CPP_NAMESPACE_BEGIN 00031 00032 // --------------------------------------------------------------------------- 00033 // BinMemInputStream: Constructors and Destructor 00034 // --------------------------------------------------------------------------- 00035 BinMemInputStream::BinMemInputStream( const XMLByte* const initData 00036 , const XMLSize_t capacity 00037 , const BufOpts bufOpt 00038 , MemoryManager* const manager) : 00039 fBuffer(0) 00040 , fBufOpt(bufOpt) 00041 , fCapacity(capacity) 00042 , fCurIndex(0) 00043 , fMemoryManager(manager) 00044 { 00045 // According to the buffer option, do the right thing 00046 if (fBufOpt == BufOpt_Copy) 00047 { 00048 XMLByte* tmpBuf = (XMLByte*) fMemoryManager->allocate 00049 ( 00050 fCapacity * sizeof(XMLByte) 00051 );//new XMLByte[fCapacity]; 00052 memcpy(tmpBuf, initData, capacity); 00053 fBuffer = tmpBuf; 00054 } 00055 else 00056 { 00057 fBuffer = initData; 00058 } 00059 } 00060 00061 BinMemInputStream::~BinMemInputStream() 00062 { 00063 // 00064 // If we adopted or copied the buffer, then clean it up. We have to 00065 // cast off the const'ness in that case in order to delete it. 00066 // 00067 if ((fBufOpt == BufOpt_Adopt) || (fBufOpt == BufOpt_Copy)) 00068 fMemoryManager->deallocate((XMLByte*)fBuffer);//delete [] (XMLByte*)fBuffer; 00069 } 00070 00071 00072 // --------------------------------------------------------------------------- 00073 // MemBinInputStream: Implementation of the input stream interface 00074 // --------------------------------------------------------------------------- 00075 XMLSize_t BinMemInputStream::readBytes( XMLByte* const toFill 00076 , const XMLSize_t maxToRead) 00077 { 00078 // 00079 // Figure out how much we can really read. Its the smaller of the 00080 // amount available and the amount asked for. 00081 // 00082 const XMLSize_t available = (fCapacity - fCurIndex); 00083 if (!available) 00084 return 0; 00085 00086 const XMLSize_t actualToRead = available < maxToRead ? available : maxToRead; 00087 00088 memcpy(toFill, &fBuffer[fCurIndex], actualToRead); 00089 fCurIndex += actualToRead; 00090 return actualToRead; 00091 } 00092 00093 const XMLCh* BinMemInputStream::getContentType() const 00094 { 00095 return 0; 00096 } 00097 00098 XERCES_CPP_NAMESPACE_END