00001 /* 00002 * Copyright 1999-2000,2004 The Apache Software Foundation. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00017 /* 00018 * $Log: BinMemInputStream.hpp,v $ 00019 * Revision 1.5 2004/09/08 13:56:21 peiyongz 00020 * Apache License Version 2.0 00021 * 00022 * Revision 1.4 2004/01/29 11:48:46 cargilld 00023 * Code cleanup changes to get rid of various compiler diagnostic messages. 00024 * 00025 * Revision 1.3 2003/05/16 03:11:22 knoaman 00026 * Partial implementation of the configurable memory manager. 00027 * 00028 * Revision 1.2 2002/11/04 15:22:03 tng 00029 * C++ Namespace Support. 00030 * 00031 * Revision 1.1.1.1 2002/02/01 22:22:10 peiyongz 00032 * sane_include 00033 * 00034 * Revision 1.3 2000/02/24 20:05:24 abagchi 00035 * Swat for removing Log from API docs 00036 * 00037 * Revision 1.2 2000/02/06 07:48:01 rahulj 00038 * Year 2K copyright swat. 00039 * 00040 * Revision 1.1.1.1 1999/11/09 01:04:07 twl 00041 * Initial checkin 00042 * 00043 * Revision 1.3 1999/11/08 20:45:04 rahul 00044 * Swat for adding in Product name and CVS comment log variable. 00045 * 00046 */ 00047 00048 #if !defined(BINMEMINPUTSTREAM_HPP) 00049 #define BINMEMINPUTSTREAM_HPP 00050 00051 #include <xercesc/util/BinInputStream.hpp> 00052 #include <xercesc/util/PlatformUtils.hpp> 00053 00054 XERCES_CPP_NAMESPACE_BEGIN 00055 00056 class BinMemInputStream : public BinInputStream 00057 { 00058 public : 00059 // ----------------------------------------------------------------------- 00060 // Class specific types 00061 // ----------------------------------------------------------------------- 00062 enum BufOpts 00063 { 00064 BufOpt_Adopt 00065 , BufOpt_Copy 00066 , BufOpt_Reference 00067 }; 00068 00069 00070 // ----------------------------------------------------------------------- 00071 // Constructors and Destructor 00072 // ----------------------------------------------------------------------- 00073 BinMemInputStream 00074 ( 00075 const XMLByte* const initData 00076 , const unsigned int capacity 00077 , const BufOpts bufOpt = BufOpt_Copy 00078 , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager 00079 ); 00080 virtual ~BinMemInputStream(); 00081 00082 00083 // ----------------------------------------------------------------------- 00084 // Stream management methods 00085 // ----------------------------------------------------------------------- 00086 void reset(); 00087 00088 00089 // ----------------------------------------------------------------------- 00090 // Implementation of the input stream interface 00091 // ----------------------------------------------------------------------- 00092 virtual unsigned int curPos() const; 00093 virtual unsigned int readBytes 00094 ( 00095 XMLByte* const toFill 00096 , const unsigned int maxToRead 00097 ); 00098 00099 00100 private : 00101 // ----------------------------------------------------------------------- 00102 // Unimplemented constructors and operators 00103 // ----------------------------------------------------------------------- 00104 BinMemInputStream(const BinMemInputStream&); 00105 BinMemInputStream& operator=(const BinMemInputStream&); 00106 // ----------------------------------------------------------------------- 00107 // Private data members 00108 // 00109 // fBuffer 00110 // The buffer of bytes that we are streaming. 00111 // 00112 // fBufOpt 00113 // Indicates the ownership status of the buffer. The caller can have 00114 // us adopt it (we delete it), reference it, or just make our own 00115 // copy of it. 00116 // 00117 // fCapacity 00118 // The size of the buffer being streamed. 00119 // 00120 // fCurIndex 00121 // The current index where the next byte will be read from. When it 00122 // hits fCapacity, we are done. 00123 // ----------------------------------------------------------------------- 00124 const XMLByte* fBuffer; 00125 BufOpts fBufOpt; 00126 unsigned int fCapacity; 00127 unsigned int fCurIndex; 00128 MemoryManager* fMemoryManager; 00129 }; 00130 00131 00132 // --------------------------------------------------------------------------- 00133 // BinMemInputStream: Stream management methods 00134 // --------------------------------------------------------------------------- 00135 inline void BinMemInputStream::reset() 00136 { 00137 fCurIndex = 0; 00138 } 00139 00140 00141 // --------------------------------------------------------------------------- 00142 // BinMemInputStream: Implementation of the input stream interface 00143 // --------------------------------------------------------------------------- 00144 inline unsigned int BinMemInputStream::curPos() const 00145 { 00146 return fCurIndex; 00147 } 00148 00149 XERCES_CPP_NAMESPACE_END 00150 00151 #endif
