DataBlock.hh revision 9208 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef __MEM_RUBY_COMMON_DATABLOCK_HH__
30#define __MEM_RUBY_COMMON_DATABLOCK_HH__
31
32#include <inttypes.h>
33
34#include <cassert>
35#include <iomanip>
36#include <iostream>
37
38class DataBlock
39{
40  public:
41    DataBlock()
42    {
43        alloc();
44    }
45
46    DataBlock(const DataBlock &cp);
47
48    ~DataBlock()
49    {
50        if (m_alloc)
51            delete [] m_data;
52    }
53
54    DataBlock& operator=(const DataBlock& obj);
55
56    void assign(uint8_t *data);
57
58    void clear();
59    uint8_t getByte(int whichByte) const;
60    const uint8_t *getData(int offset, int len) const;
61    void setByte(int whichByte, uint8_t data);
62    void setData(uint8_t *data, int offset, int len);
63    void copyPartial(const DataBlock & dblk, int offset, int len);
64    bool equal(const DataBlock& obj) const;
65    void print(std::ostream& out) const;
66
67  private:
68    void alloc();
69    uint8_t *m_data;
70    bool m_alloc;
71};
72
73inline void
74DataBlock::assign(uint8_t *data)
75{
76    assert(data != NULL);
77    if (m_alloc) {
78        delete [] m_data;
79    }
80    m_data = data;
81    m_alloc = false;
82}
83
84inline uint8_t
85DataBlock::getByte(int whichByte) const
86{
87    return m_data[whichByte];
88}
89
90inline void
91DataBlock::setByte(int whichByte, uint8_t data)
92{
93    m_data[whichByte] = data;
94}
95
96inline void
97DataBlock::copyPartial(const DataBlock & dblk, int offset, int len)
98{
99    setData(&dblk.m_data[offset], offset, len);
100}
101
102inline std::ostream&
103operator<<(std::ostream& out, const DataBlock& obj)
104{
105    obj.print(out);
106    out << std::flush;
107    return out;
108}
109
110inline bool
111operator==(const DataBlock& obj1,const DataBlock& obj2)
112{
113    return obj1.equal(obj2);
114}
115
116#endif // __MEM_RUBY_COMMON_DATABLOCK_HH__
117