84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
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/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
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* Copyright (C) 2011-2016 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "internals.h"
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#include "FileStream.h"
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namespace MT32Emu {
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using std::ios_base;
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FileStream::FileStream() : ifsp(*new std::ifstream), data(NULL), size(0)
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{}
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FileStream::~FileStream() {
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// destructor closes ifsp
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delete &ifsp;
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delete[] data;
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}
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size_t FileStream::getSize() {
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if (size != 0) {
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return size;
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}
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if (!ifsp.is_open()) {
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return 0;
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}
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ifsp.seekg(0, ios_base::end);
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size = size_t(ifsp.tellg());
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return size;
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}
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const Bit8u *FileStream::getData() {
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if (data != NULL) {
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return data;
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}
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if (!ifsp.is_open()) {
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return NULL;
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}
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if (getSize() == 0) {
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return NULL;
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}
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Bit8u *fileData = new Bit8u[size];
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if (fileData == NULL) {
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return NULL;
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}
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ifsp.seekg(0);
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ifsp.read(reinterpret_cast<char *>(fileData), std::streamsize(size));
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if (size_t(ifsp.tellg()) != size) {
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delete[] fileData;
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return NULL;
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}
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data = fileData;
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close();
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return data;
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}
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bool FileStream::open(const char *filename) {
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ifsp.clear();
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ifsp.open(filename, ios_base::in | ios_base::binary);
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return !ifsp.fail();
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}
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void FileStream::close() {
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ifsp.close();
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ifsp.clear();
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}
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} // namespace MT32Emu
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