183 lines
4.2 KiB
C++
Executable File
183 lines
4.2 KiB
C++
Executable File
//
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// ATTRDOS.CPP
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//
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// Source file for ArchiveLib 2.0
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//
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// Copyright (c) Greenleaf Software, Inc. 1994-1996
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// All Rights Reserved
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//
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// CONTENTS
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//
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// ALFile::ReadAttributesFromFileSys()
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// ALFile::WriteAttributesToFileSys()
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//
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// DESCRIPTION
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//
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// These two files provide system-dependent functionality for ALFile.
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// It takes different code to set the attributes for files depending
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// on which O/S you are targetting.
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//
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// REVISION HISTORY
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//
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// February 14, 1996 2.0A : New release
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#include "arclib.h"
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#if !defined( AL_IBM )
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#pragma hdrstop
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#endif
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#include <dos.h>
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#include "filestor.h"
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//
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// NAME
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//
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// ALFile::ReadAttributesFromFileSys()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// MS-DOS Win16
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// C++
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//
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// SHORT DESCRIPTION
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//
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// Read in the attributes of a file under MS-DOS.
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//
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// C++ SYNOPSIS
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//
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// #include "arclib.h"
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// #include "filestor.h"
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//
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// int ALFile::ReadAttributesFromFileSys();
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//
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// C SYNOPSIS
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//
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// None, this internal protected function has no C version.
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//
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// VB SYNOPSIS
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//
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// None, this internal protected function has no VB version.
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//
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// DELPHI SYNOPSIS
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//
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// None, this internal protected function has no Delphi version.
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//
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// ARGUMENTS
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//
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// None.
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//
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// DESCRIPTION
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//
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// When an ALFile object is opened, we have to read the file attributes.
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// This is an O/S dependent function, but I don't want to have too many
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// #ifdefs, so I package it in a separate directory that gets compiled
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// in an environment dependent fashion. This particular file gets
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// compiled for any library that's using the MS-DOS file system.
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//
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// All this function has to do is call the _dos_getfileattattr() function,
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// then translate the returned bits into the appropriate internal attribute
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// bits.
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//
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// RETURNS
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//
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// AL_SUCCESS or AL_CANT_OPEN_FILE.
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//
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// EXAMPLE
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//
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// SEE ALSO
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//
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// REVISION HISTORY
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//
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// February 14, 1996 2.0A : New release.
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//
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int AL_PROTO
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ALFile::ReadAttributesFromFileSys() /* Tag protected function */
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{
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unsigned attributes;
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if ( _dos_getfileattr( mName, &attributes ) != 0 )
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return AL_CANT_OPEN_FILE;
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mAttributes.miUnixBitsPresent = 0;
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mAttributes.miReadOnly = ( attributes & _A_RDONLY ) != 0;
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mAttributes.miSystem = ( attributes & _A_SYSTEM ) != 0;
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mAttributes.miHidden = ( attributes & _A_HIDDEN ) != 0;
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mAttributes.miArchive = ( attributes & _A_ARCH ) != 0;
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return AL_SUCCESS;
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}
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//
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// NAME
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//
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// ALFile::WriteAttributesToFileSys()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// MS-DOS Win16
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// C++
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//
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// SHORT DESCRIPTION
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//
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// Set the attributes of a file under MS-DOS.
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//
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// C++ SYNOPSIS
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//
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// #include "arclib.h"
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// #include "filestor.h"
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//
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// int ALFile::WriteAttributesToFileSys();
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//
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// C SYNOPSIS
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//
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// None, this internal protected function has no C version.
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//
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// VB SYNOPSIS
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//
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// None, this internal protected function has no VB version.
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//
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// DELPHI SYNOPSIS
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//
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// None, this internal protected function has no Delphi version.
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//
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// ARGUMENTS
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//
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// None.
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//
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// DESCRIPTION
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//
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// When an ALFile object is closed, we have to set the file attributes.
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// This is an O/S dependent function, but I don't want to have too many
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// #ifdefs, so I package it in a separate directory that gets compiled
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// in an environment dependent fashion. This particular file gets
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// compiled for any library that's using the MS-DOS file system.
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//
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// All this function has to do is call the _dos_setfileattattr() function,
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// with the appopriate bits set. This means I have to translate the
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// internal bits into the format expected by the DOS API.
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//
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// RETURNS
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//
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// Nothing.
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//
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// EXAMPLE
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//
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// SEE ALSO
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//
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// REVISION HISTORY
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//
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// February 14, 1996 2.0A : New release.
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//
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void AL_PROTO
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ALFile::WriteAttributesToFileSys() /* Tag protected function */
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{
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unsigned int attributes = 0;
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if ( !mAttributes.miUnixBitsPresent ) {
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attributes |= mAttributes.miReadOnly ? _A_RDONLY : 0;
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attributes |= mAttributes.miSystem ? _A_SYSTEM : 0;
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attributes |= mAttributes.miHidden ? _A_HIDDEN : 0;
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attributes |= mAttributes.miArchive ? _A_ARCH : 0;
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_dos_setfileattr( mName, attributes );
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}
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}
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