FileFormatManager.cpp
3.55 KB
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
#include "FileFormatManager.h"
#include <cstring>
#include "../Common/Toolbox.h"
using namespace TREPS::Common;
namespace TREPS
{
namespace File
{
FileFormatManagerClass::FileFormatManagerClass(void) : app(NULL), loader(NULL)
{
this->app = ApplicationClass::getInstance();
}
FileFormatManagerClass::~FileFormatManagerClass(void)
{
if (this->loader != NULL)
{
this->loader->close();
delete this->loader;
this->loader = NULL;
}
}
bool FileFormatManagerClass::init(const char *format_path)
{
//create xml loader
if (this->loader == NULL)
this->loader = new XMLManagerClass();
this->loader->close();
if (!this->loader->isExist(format_path))
{
LOG4CXX_ERROR(this->app->getLog()->getPtr(),"Cannot find formats file : " << format_path);
return false;
}
//load xml file
if (!this->loader->loadFile(format_path))
{
LOG4CXX_ERROR(this->app->getLog()->getPtr(),"Cannot load formats file : " << format_path);
return false;
}
//file validation with xsd
if (!this->loader->isValid(TREPS_FORMATS_XSD))
{
LOG4CXX_ERROR(this->app->getLog()->getPtr(),"Invalid formats file : " << format_path);
return false;
}
return true;
}
t_FileFormat FileFormatManagerClass::getFileFormatFromId(const char *format_id)
{
if (strcmp(format_id,"ascii") == 0)
return FF_ASCII;
else if (strcmp(format_id,"votable") == 0)
return FF_VOTABLE;
else if (strcmp(format_id,"cdf") == 0)
return FF_CDF;
else if (strcmp(format_id,"netcdf") == 0)
return FF_NETCDF;
return FF_NONE;
}
string FileFormatManagerClass::getFileFormatIdFromFileFormat(t_FileFormat format)
{
switch (format)
{
case FF_ASCII :
return "ascii";
case FF_VOTABLE :
return "votable";
case FF_CDF :
return "cdf";
case FF_NETCDF :
return "netcdf";
case FF_NONE :
return "";
}
return "";
}
t_FileFormat FileFormatManagerClass::detectFileFormat(const char *filePath)
{
string type = getFileMIMEType(filePath);
LOG4CXX_INFO(this->app->getLog()->getPtr(),"File MIME Type : " << type);
//remove charset
size_t pos;
pos = type.find(";");
if (pos != string::npos)
type = type.substr(0,pos);
//ASCII file detection
if (type.find("text/") != string::npos)
return FF_ASCII;
//VOTable detection (a VOTable is a xml file)
if (type.compare("application/xml") == 0)
return FF_VOTABLE;
if ((type.compare("application/octet-stream") == 0))
{
//netcdf or cdf file detection
//read magic number
char buf[5];
FILE *file = fopen(filePath, "rb");
fread(buf, sizeof(char), 4, file);
fclose(file);
buf[4] = '\0';
//get magic number (read a big-endian integer from a byte array)
int magicNum1 = ((buf[0] & 0xff ) << 24 | ( buf[1] & 0xff ) << 16 | ( buf[2] & 0xff ) << 8 | ( buf[3] & 0xff ) << 0);
//test magic number
if ((magicNum1 & 0xfff00000) == 0xcdf00000) //CDF >= 2.6
{
LOG4CXX_INFO(this->app->getLog()->getPtr(),"CDF detected - Version >= 2.6");
return FF_CDF;
}
else if (magicNum1 == 0x0000ffff)
{
LOG4CXX_INFO(this->app->getLog()->getPtr(),"CDF detected - Version < 2.6");
return FF_CDF;
}
//test key word
buf[3] = '\0';
if (strcmp(buf,"CDF") == 0) //NetCDF (it's not an error, the key word for netCDF is CDF ...)
{
LOG4CXX_INFO(this->app->getLog()->getPtr(),"NetCDF detected");
return FF_NETCDF;
}
}
LOG4CXX_ERROR(this->app->getLog()->getPtr(),"File format not supported");
return FF_NONE;
}
}
}