[358] | 1 | /*
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| 2 | * Copyright 1999-2000,2004 The Apache Software Foundation.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | /*
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| 18 | * $Log: BinMemInputStream.hpp,v $
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| 19 | * Revision 1.5 2004/09/08 13:56:21 peiyongz
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| 20 | * Apache License Version 2.0
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| 21 | *
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| 22 | * Revision 1.4 2004/01/29 11:48:46 cargilld
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| 23 | * Code cleanup changes to get rid of various compiler diagnostic messages.
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| 24 | *
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| 25 | * Revision 1.3 2003/05/16 03:11:22 knoaman
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| 26 | * Partial implementation of the configurable memory manager.
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| 27 | *
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| 28 | * Revision 1.2 2002/11/04 15:22:03 tng
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| 29 | * C++ Namespace Support.
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| 30 | *
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| 31 | * Revision 1.1.1.1 2002/02/01 22:22:10 peiyongz
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| 32 | * sane_include
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| 33 | *
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| 34 | * Revision 1.3 2000/02/24 20:05:24 abagchi
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| 35 | * Swat for removing Log from API docs
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| 36 | *
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| 37 | * Revision 1.2 2000/02/06 07:48:01 rahulj
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| 38 | * Year 2K copyright swat.
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| 39 | *
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| 40 | * Revision 1.1.1.1 1999/11/09 01:04:07 twl
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| 41 | * Initial checkin
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| 42 | *
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| 43 | * Revision 1.3 1999/11/08 20:45:04 rahul
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| 44 | * Swat for adding in Product name and CVS comment log variable.
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| 45 | *
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| 46 | */
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| 47 |
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| 48 | #if !defined(BINMEMINPUTSTREAM_HPP)
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| 49 | #define BINMEMINPUTSTREAM_HPP
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| 50 |
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| 51 | #include <xercesc/util/BinInputStream.hpp>
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| 52 | #include <xercesc/util/PlatformUtils.hpp>
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| 53 |
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| 54 | XERCES_CPP_NAMESPACE_BEGIN
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| 55 |
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| 56 | class XMLUTIL_EXPORT BinMemInputStream : public BinInputStream
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| 57 | {
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| 58 | public :
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| 59 | // -----------------------------------------------------------------------
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| 60 | // Class specific types
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| 61 | // -----------------------------------------------------------------------
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| 62 | enum BufOpts
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| 63 | {
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| 64 | BufOpt_Adopt
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| 65 | , BufOpt_Copy
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| 66 | , BufOpt_Reference
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| 67 | };
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| 68 |
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| 69 |
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| 70 | // -----------------------------------------------------------------------
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| 71 | // Constructors and Destructor
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| 72 | // -----------------------------------------------------------------------
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| 73 | BinMemInputStream
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| 74 | (
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| 75 | const XMLByte* const initData
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| 76 | , const unsigned int capacity
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| 77 | , const BufOpts bufOpt = BufOpt_Copy
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| 78 | , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
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| 79 | );
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| 80 | virtual ~BinMemInputStream();
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| 81 |
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| 82 |
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| 83 | // -----------------------------------------------------------------------
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| 84 | // Stream management methods
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| 85 | // -----------------------------------------------------------------------
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| 86 | void reset();
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| 87 |
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| 88 |
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| 89 | // -----------------------------------------------------------------------
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| 90 | // Implementation of the input stream interface
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| 91 | // -----------------------------------------------------------------------
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| 92 | virtual unsigned int curPos() const;
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| 93 | virtual unsigned int readBytes
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| 94 | (
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| 95 | XMLByte* const toFill
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| 96 | , const unsigned int maxToRead
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| 97 | );
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| 98 |
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| 99 |
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| 100 | private :
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| 101 | // -----------------------------------------------------------------------
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| 102 | // Unimplemented constructors and operators
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| 103 | // -----------------------------------------------------------------------
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| 104 | BinMemInputStream(const BinMemInputStream&);
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| 105 | BinMemInputStream& operator=(const BinMemInputStream&);
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| 106 | // -----------------------------------------------------------------------
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| 107 | // Private data members
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| 108 | //
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| 109 | // fBuffer
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| 110 | // The buffer of bytes that we are streaming.
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| 111 | //
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| 112 | // fBufOpt
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| 113 | // Indicates the ownership status of the buffer. The caller can have
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| 114 | // us adopt it (we delete it), reference it, or just make our own
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| 115 | // copy of it.
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| 116 | //
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| 117 | // fCapacity
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| 118 | // The size of the buffer being streamed.
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| 119 | //
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| 120 | // fCurIndex
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| 121 | // The current index where the next byte will be read from. When it
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| 122 | // hits fCapacity, we are done.
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| 123 | // -----------------------------------------------------------------------
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| 124 | const XMLByte* fBuffer;
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| 125 | BufOpts fBufOpt;
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| 126 | unsigned int fCapacity;
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| 127 | unsigned int fCurIndex;
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| 128 | MemoryManager* fMemoryManager;
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| 129 | };
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| 130 |
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| 131 |
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| 132 | // ---------------------------------------------------------------------------
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| 133 | // BinMemInputStream: Stream management methods
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| 134 | // ---------------------------------------------------------------------------
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| 135 | inline void BinMemInputStream::reset()
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| 136 | {
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| 137 | fCurIndex = 0;
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| 138 | }
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| 139 |
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| 140 |
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| 141 | // ---------------------------------------------------------------------------
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| 142 | // BinMemInputStream: Implementation of the input stream interface
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| 143 | // ---------------------------------------------------------------------------
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| 144 | inline unsigned int BinMemInputStream::curPos() const
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| 145 | {
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| 146 | return fCurIndex;
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| 147 | }
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| 148 |
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| 149 | XERCES_CPP_NAMESPACE_END
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| 150 |
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| 151 | #endif
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