107 lines
2.7 KiB
C++
107 lines
2.7 KiB
C++
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
|
|
* Copyright (C) 2011-2021 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/>.
|
|
*/
|
|
|
|
#if defined MT32EMU_SHARED && defined MT32EMU_INSTALL_DEFAULT_LOCALE
|
|
#include <clocale>
|
|
#endif
|
|
|
|
#include "internals.h"
|
|
|
|
// Disable MSVC STL exceptions
|
|
#ifdef _MSC_VER
|
|
#define _HAS_EXCEPTIONS 0
|
|
#endif
|
|
#include "FileStream.h"
|
|
|
|
namespace MT32Emu {
|
|
|
|
// This initialises C locale with the user-preferred system locale once facilitating access
|
|
// to ROM files with localised pathnames. This is only necessary in rare cases e.g. when building
|
|
// shared library statically linked with C runtime with old MS VC versions, so that the C locale
|
|
// set by the client application does not have effect, and thus such ROM files cannot be opened.
|
|
static inline void configureSystemLocale() {
|
|
#if defined MT32EMU_SHARED && defined MT32EMU_INSTALL_DEFAULT_LOCALE
|
|
static bool configured = false;
|
|
|
|
if (configured) return;
|
|
configured = true;
|
|
|
|
setlocale(LC_ALL, "");
|
|
#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
|