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
|
// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CReadFile.h"
namespace irr
{
namespace io
{
CReadFile::CReadFile(const io::path& fileName)
: File(0), FileSize(0), Filename(fileName)
{
#ifdef _DEBUG
setDebugName("CReadFile");
#endif
openFile();
}
CReadFile::~CReadFile()
{
if (File)
fclose(File);
}
//! returns how much was read
s32 CReadFile::read(void* buffer, u32 sizeToRead)
{
if (!isOpen())
return 0;
return (s32)fread(buffer, 1, sizeToRead, File);
}
//! changes position in file, returns true if successful
//! if relativeMovement==true, the pos is changed relative to current pos,
//! otherwise from begin of file
bool CReadFile::seek(long finalPos, bool relativeMovement)
{
if (!isOpen())
return false;
return fseek(File, finalPos, relativeMovement ? SEEK_CUR : SEEK_SET) == 0;
}
//! returns size of file
long CReadFile::getSize() const
{
return FileSize;
}
//! returns where in the file we are.
long CReadFile::getPos() const
{
return ftell(File);
}
//! opens the file
void CReadFile::openFile()
{
if (Filename.size() == 0) // bugfix posted by rt
{
File = 0;
return;
}
#if defined ( _IRR_WCHAR_FILESYSTEM )
File = _wfopen(Filename.c_str(), L"rb");
#else
File = fopen(Filename.c_str(), "rb");
#endif
if (File)
{
// get FileSize
fseek(File, 0, SEEK_END);
FileSize = getPos();
fseek(File, 0, SEEK_SET);
}
}
//! returns name of file
const io::path& CReadFile::getFileName() const
{
return Filename;
}
IReadFile* createReadFile(const io::path& fileName)
{
CReadFile* file = new CReadFile(fileName);
if (file->isOpen())
return file;
file->drop();
return 0;
}
} // end namespace io
} // end namespace irr
|
