161 lines
2.9 KiB
C++
161 lines
2.9 KiB
C++
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/*++
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Copyright (c) 1998-1999 Microsoft Corporation
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All rights reserved.
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Module Name:
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dbgfil.cxx
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Abstract:
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Debug Device File
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Author:
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Steve Kiraly (SteveKi) 10-Dec-1995
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Revision History:
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--*/
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#include "precomp.hxx"
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#pragma hdrstop
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#include "dbgfil.hxx"
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//
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// Construct the file device.
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//
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// pszConfiguration - contains the file name to open.
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//
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TDebugDeviceFile::
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TDebugDeviceFile(
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IN LPCTSTR pszConfiguration,
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IN EDebugType eDebugType
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) : TDebugDevice( pszConfiguration, eDebugType ),
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_hFile( INVALID_HANDLE_VALUE )
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{
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TDebugDevice::TIterator i( this );
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for( i.First(); !i.IsDone(); i.Next() )
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{
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//
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// First item always contains the character type.
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// We want the second item which is the file name.
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//
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if( i.Index() == 2 )
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{
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//
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// Look for the file specifier.
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//
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_strFile.bUpdate( i.Current() );
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break;
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}
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}
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}
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//
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// Close the file device.
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//
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TDebugDeviceFile::
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~TDebugDeviceFile(
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)
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{
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if( _hFile && _hFile != INVALID_HANDLE_VALUE )
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{
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CloseHandle( _hFile );
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}
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}
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//
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// Indicates the file deveice object is valid.
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//
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BOOL
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TDebugDeviceFile::
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bValid(
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VOID
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)
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{
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return _strFile.bValid();
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}
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//
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// Output the string to the debug file device
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//
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BOOL
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TDebugDeviceFile::
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bOutput (
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IN UINT uSize,
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IN LPBYTE pBuffer
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)
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{
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BOOL bStatus = FALSE;
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if( bValid( ) )
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{
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//
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// Is eth file currently open, we delay this to the
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// very last momemt.
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//
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if( _hFile == INVALID_HANDLE_VALUE )
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{
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_hFile = OpenOutputFile();
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}
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if( _hFile )
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{
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//
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// Write the bytes to the file.
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//
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DWORD dwBytesWritten;
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bStatus = WriteFile( _hFile,
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pBuffer,
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uSize,
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&dwBytesWritten,
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NULL );
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//
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// If the write failed or the number of bytes
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// written did not match the request.
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//
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if( !bStatus || uSize != dwBytesWritten )
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{
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bStatus = FALSE;
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}
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}
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}
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return bStatus;
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}
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//
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// Open the output file.
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//
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HANDLE
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TDebugDeviceFile::
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OpenOutputFile(
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VOID
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)
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{
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//
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// Create the file.
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//
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HANDLE hFile = CreateFile( _strFile,
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GENERIC_WRITE,
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FILE_SHARE_READ,
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NULL,
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OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH,
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NULL );
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//
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// If the file was not created, invalidate the handle.
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//
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if( hFile == INVALID_HANDLE_VALUE )
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{
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hFile = NULL;
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}
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return hFile;
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}
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