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
|
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011-2017 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef MT32EMU_SHARED
#include <locale>
#endif
#include "internals.h"
// Disable MSVC STL exceptions
#ifdef _MSC_VER
#define _HAS_EXCEPTIONS 0
#endif
#include "FileStream.h"
namespace MT32Emu {
static inline void configureSystemLocale() {
#ifdef MT32EMU_SHARED
static bool configured = false;
if (configured) return;
configured = true;
std::locale::global(std::locale(""));
#endif
}
using std::ios_base;
FileStream::FileStream() : ifsp(*new std::ifstream), data(NULL), size(0)
{}
FileStream::~FileStream() {
// destructor closes ifsp
delete &ifsp;
delete[] data;
}
size_t FileStream::getSize() {
if (size != 0) {
return size;
}
if (!ifsp.is_open()) {
return 0;
}
ifsp.seekg(0, ios_base::end);
size = size_t(ifsp.tellg());
return size;
}
const Bit8u *FileStream::getData() {
if (data != NULL) {
return data;
}
if (!ifsp.is_open()) {
return NULL;
}
if (getSize() == 0) {
return NULL;
}
Bit8u *fileData = new Bit8u[size];
if (fileData == NULL) {
return NULL;
}
ifsp.seekg(0);
ifsp.read(reinterpret_cast<char *>(fileData), std::streamsize(size));
if (size_t(ifsp.tellg()) != size) {
delete[] fileData;
return NULL;
}
data = fileData;
close();
return data;
}
bool FileStream::open(const char *filename) {
configureSystemLocale();
ifsp.clear();
ifsp.open(filename, ios_base::in | ios_base::binary);
return !ifsp.fail();
}
void FileStream::close() {
ifsp.close();
ifsp.clear();
}
} // namespace MT32Emu
|
