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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
#include "ecwmemfs.hh"
#include <fstream>
#include <algorithm>
#include "raslib/rminit.hh"
#include "raslib/rmdebug.hh"
const char*
MemoryFileSystem::memorySrc = NULL;
r_Bytes
MemoryFileSystem::memorySrcLength = 0;
const char*
MemoryFileSystem::memorySrcName = "memory.src";
MemoryFileSystem::MemoryFileSystem()
: current(NULL),
source(NULL),
length(0),
closed(false),
owner(true)
{
RMDBGONCE(5, RMDebug::module_conversion, "MemoryFileSystem", "MemoryFileSystem()");
}
MemoryFileSystem::m_Error
MemoryFileSystem::open(const char* memorySource, r_Bytes mSize)
{
RMDBGONCE(5, RMDebug::module_conversion, "MemoryFileSystem", "open(source, " << mSize << ")");
owner = false;
length = mSize;
source = (char*)memorySource;
current = source;
return No_Error;
}
MemoryFileSystem::m_Error
MemoryFileSystem::open(const char* fileName)
{
owner = true;
RMDBGENTER(5, RMDebug::module_conversion, "MemoryFileSystem", "open(" << fileName << ")");
if (fileName == memorySrcName)
{
MemoryFileSystem::m_Error err = open(memorySrc, memorySrcLength);
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "open(" << fileName << ") " << err);
return err;
}
else {
std::ifstream f;
f.open(fileName);
if (!f.is_open())
{
RMInit::logOut << "MemoryFileSystem::open(" << fileName << ") could not open file" << std::endl;
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "open(" << fileName << ") " << Error);
return Error;
}
f.seekg(0, std::ios::end);
std::ios::pos_type end = f.tellg();
RMDBGMIDDLE(5, RMDebug::module_conversion, "MemoryFileSystem", "size " << end);
length = end;
source = new char[end];
current = source;
memset(source, 0, end);
f.seekg(0, std::ios::beg);
f.read(source, end);
f.close();
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "open(" << fileName << ") " << No_Error);
return No_Error;
}
}
MemoryFileSystem::m_Error
MemoryFileSystem::close()
{
RMDBGENTER(5, RMDebug::module_conversion, "MemoryFileSystem", "close()");
if (!closed)
{
if (owner)
{
delete [] source;
}
source = NULL;
current = NULL;
length = 0;
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "close() " << No_Error);
return No_Error;
}
else {
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "close() " << Error);
return Error;
}
}
MemoryFileSystem::~MemoryFileSystem()
{
RMDBGONCE(5, RMDebug::module_conversion, "MemoryFileSystem", "~MemoryFileSystem()");
close();
}
MemoryFileSystem::m_Error
MemoryFileSystem::read(void* buffer, r_Bytes bSize)
{
RMDBGENTER(5, RMDebug::module_conversion, "MemoryFileSystem", "read(buffer, " << bSize << ")");
bSize = std::min(bSize, length - (current - source));
RMDBGMIDDLE(5, RMDebug::module_conversion, "MemoryFileSystem", "reading " << bSize);
memcpy(buffer, current, bSize);
current += bSize;
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "read(buffer, " << bSize << ") " << No_Error);
return No_Error;
}
unsigned long long
MemoryFileSystem::tell()
{
RMDBGONCE(5, RMDebug::module_conversion, "MemoryFileSystem", "tell() " << (current - source));
return current - source;
}
MemoryFileSystem::m_Error
MemoryFileSystem::seek(unsigned long long offset)
{
RMDBGENTER(5, RMDebug::module_conversion, "MemoryFileSystem", "seek(" << offset << ")");
if (offset > length)
{
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "seek(" << offset << ") (length " << length << ") " << Error);
return Error;
}
else {
current = offset + source;
RMDBGEXIT(5, RMDebug::module_conversion, "MemoryFileSystem", "seek(" << offset << ") " << No_Error);
return No_Error;
}
}
|
