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StdioFile64.cpp
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82 lines (68 loc) · 2.22 KB
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/*
* (C) 2014 see Authors.txt
*
* This file is part of MPC-HC.
*
* MPC-HC is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* MPC-HC 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "stdafx.h"
#include <stdio.h>
#include "StdioFile64.h"
IMPLEMENT_DYNAMIC(CStdioFile64, CStdioFile)
ULONGLONG CStdioFile64::GetPosition() const
{
ASSERT_VALID(this);
ASSERT(m_pStream != nullptr);
long long pos = _ftelli64(m_pStream);
if (pos == -1) {
AfxThrowFileException(CFileException::invalidFile, _doserrno, m_strFileName);
}
return pos;
}
ULONGLONG CStdioFile64::GetLength() const
{
ASSERT_VALID(this);
LONGLONG nCurrent;
LONGLONG nLength;
LONG nResult;
nCurrent = _ftelli64(m_pStream);
if (nCurrent == -1) {
AfxThrowFileException(CFileException::invalidFile, _doserrno, m_strFileName);
}
nResult = _fseeki64(m_pStream, 0, SEEK_END);
if (nResult != 0) {
AfxThrowFileException(CFileException::badSeek, _doserrno, m_strFileName);
}
nLength = _ftelli64(m_pStream);
if (nLength == -1) {
AfxThrowFileException(CFileException::invalidFile, _doserrno, m_strFileName);
}
nResult = _fseeki64(m_pStream, nCurrent, SEEK_SET);
if (nResult != 0) {
AfxThrowFileException(CFileException::badSeek, _doserrno, m_strFileName);
}
return nLength;
}
ULONGLONG CStdioFile64::Seek(LONGLONG lOff, UINT nFrom)
{
ASSERT_VALID(this);
ASSERT(nFrom == begin || nFrom == end || nFrom == current);
ASSERT(m_pStream != nullptr);
if (_fseeki64(m_pStream, lOff, nFrom) != 0) {
AfxThrowFileException(CFileException::badSeek, _doserrno, m_strFileName);
}
long long pos = _ftelli64(m_pStream);
return pos;
}