1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
#pragma once
#include "file_reader.hpp"
#include "file_writer.hpp"
#include "../std/vector.hpp"
#include "../std/string.hpp"
class FilesContainerBase
{
public:
typedef string Tag;
struct Info
{
Tag m_tag;
uint64_t m_offset;
uint64_t m_size;
Info() {}
Info(Tag const & tag, uint64_t offset) : m_tag(tag), m_offset(offset) {}
};
protected:
struct LessInfo
{
bool operator() (Info const & t1, Info const & t2) const
{
return (t1.m_tag < t2.m_tag);
}
bool operator() (Info const & t1, Tag const & t2) const
{
return (t1.m_tag < t2);
}
bool operator() (Tag const & t1, Info const & t2) const
{
return (t1 < t2.m_tag);
}
};
struct LessOffset
{
bool operator() (Info const & t1, Info const & t2) const
{
if (t1.m_offset == t2.m_offset)
{
// Element with nonzero size should be the last one,
// for correct append writer mode (FilesContainerW::GetWriter).
ASSERT ( t1.m_size == 0 || t2.m_size == 0, (t1.m_size, t2.m_size) );
return (t1.m_size < t2.m_size);
}
else
return (t1.m_offset < t2.m_offset);
}
bool operator() (Info const & t1, uint64_t const & t2) const
{
return (t1.m_offset < t2);
}
bool operator() (uint64_t const & t1, Info const & t2) const
{
return (t1 < t2.m_offset);
}
};
class EqualTag
{
Tag const & m_tag;
public:
EqualTag(Tag const & tag) : m_tag(tag) {}
bool operator() (Info const & t) const
{
return (t.m_tag == m_tag);
}
};
typedef vector<Info> InfoContainer;
InfoContainer m_info;
template <class ReaderT>
void ReadInfo(ReaderT & reader);
};
class FilesContainerR : public FilesContainerBase
{
public:
typedef ModelReaderPtr ReaderT;
explicit FilesContainerR(string const & fName,
uint32_t logPageSize = 10,
uint32_t logPageCount = 10);
explicit FilesContainerR(ReaderT const & file);
ReaderT GetReader(Tag const & tag) const;
bool IsReaderExist(Tag const & tag) const;
template <typename F> void ForEachTag(F f) const
{
for (size_t i = 0; i < m_info.size(); ++i)
f(m_info[i].m_tag);
}
inline uint64_t GetFileSize() const { return m_source.Size(); }
inline string GetFileName() const { return m_source.GetName(); }
private:
ReaderT m_source;
};
class FilesContainerW : public FilesContainerBase
{
public:
FilesContainerW(string const & fName,
FileWriter::Op op = FileWriter::OP_WRITE_TRUNCATE);
~FilesContainerW();
FileWriter GetWriter(Tag const & tag);
void Write(string const & fPath, Tag const & tag);
void Write(ModelReaderPtr reader, Tag const & tag);
void Write(vector<char> const & buffer, Tag const & tag);
void Finish();
/// Delete section with rewriting file.
/// @precondition Container should be opened with FileWriter::OP_WRITE_EXISTING.
void DeleteSection(Tag const & tag);
private:
uint64_t SaveCurrentSize();
void Open(FileWriter::Op op);
void StartNew();
string m_name;
bool m_bNeedRewrite;
bool m_bFinished;
};
|
