source: NonGTP/Xerces/xerces/include/xercesc/util/BinMemInputStream.hpp @ 358

Revision 358, 4.9 KB checked in by bittner, 19 years ago (diff)

xerces added

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