71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2023 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <kiplatform/io.h>
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#include <wx/string.h>
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#include <wx/wxcrt.h>
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#include <windows.h>
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// Define USE_MSYS2_FALlBACK if the code for _MSC_VER does not compile on msys2
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//#define USE_MSYS2_FALLBACK
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FILE* KIPLATFORM::IO::SeqFOpen( const wxString& aPath, const wxString& aMode )
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{
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#if defined( _MSC_VER ) || !defined( USE_MSYS2_FALLBACK )
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// We need to use the win32 api to setup a file handle with sequential scan flagged
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// and pass it up the chain to create a normal FILE stream
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HANDLE hFile = INVALID_HANDLE_VALUE;
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hFile = CreateFileW( aPath.wc_str(),
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_FLAG_SEQUENTIAL_SCAN,
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NULL );
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if (hFile == INVALID_HANDLE_VALUE)
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{
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return NULL;
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}
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int fd = _open_osfhandle( reinterpret_cast<intptr_t>( hFile ), 0 );
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if( fd == -1 )
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{
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// close the handle manually as the ownership didnt transfer
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CloseHandle( hFile );
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return NULL;
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}
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FILE* fp = _fdopen( fd, aMode.c_str() );
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if( !fp )
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{
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// close the file descriptor manually as the ownership didnt transfer
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_close( fd );
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}
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return fp;
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#else
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// Fallback for MSYS2
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return wxFopen( aPath, aMode );
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#endif
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} |