380 lines
11 KiB
C++
Executable File
380 lines
11 KiB
C++
Executable File
//
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// WILDOS2.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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// ALWildCardExpander::ConstructOsData()
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// ALWildCardExpander::DestroyOsData()
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// ALWildCardExpander::GetNextFile()
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//
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// DESCRIPTION
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//
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// This file contains the OS specific routines need to expand
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// wild card file names. Different versions of these three functions
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// exist for DOS, Win95, and OS/2.
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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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#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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#define INCL_DOSFILEMGR
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#include <os2.h>
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#include "wildcard.h"
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struct ALWildCardOsData { /* Tag internal class */
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HDIR mHandle;
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};
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//
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// NAME
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//
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// ALWildCardExpander::ConstructOsData()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// OS/2
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// C++
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//
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// SHORT DESCRIPTION
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//
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// Allocate space for a wildcard search under the OS/2 file system.
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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 "wildcard
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//
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// void ALWildCardExpander::ConstructOsData();
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//
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// C SYNOPSIS
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//
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// No C translation for this internal protected function.
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//
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// VB SYNOPSIS
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//
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// No VB translation for this internal protected function.
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//
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// DELPHI SYNOPSIS
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//
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// No Delphi translation for this internal protected function.
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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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// The process of wild card file expansion differs drastically for
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// all the different environments we support. Since each system
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// is going to have different data requirements, we don't try to
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// allocate any specialized data in the base class. Instead, we just keep a
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// pointer to the data, and allocate it in this member function. Different
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// versions of this member function show up in different directories, and the
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// BUILD.INI file directs the compiler as to which to include.
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//
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// This module supports the OS/2 file system. The OS/2 wild card
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// expansion state is stored in an HDIR handle. We allocate that
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// structure here, and store a pointer to it in the mpOsData member
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// of the ALWildCardExpander structure. Note that the HDIR data
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// isn't initialized yet, we have just allocated some space for it.
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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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ALWildCardExpander::ConstructOsData() /* Tag protected function */
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{
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mpOsData = new ALWildCardOsData;
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if ( mpOsData )
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mpOsData->mHandle = 0xffffffff;
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}
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//
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// NAME
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//
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// ALWildCardExpander::DestroyOsData()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// OS/2
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// C++
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//
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// SHORT DESCRIPTION
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//
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// Destroy the space allocated for the wildcard search under OS/2.
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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 "wildcard
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//
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// void ALWildCardExpander::DestroyOsData();
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//
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// C SYNOPSIS
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//
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// No C translation for this internal protected function.
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//
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// VB SYNOPSIS
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//
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// No VB translation for this internal protected function.
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//
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// DELPHI SYNOPSIS
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//
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// No Delphi translation for this internal protected function.
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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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// The process of wild card file expansion differs drastically for
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// all the different environments we support. Since each system
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// is going to have different data requirements, we don't try to
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// allocate system-specific data in the base class. Instead, we just keep a
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// pointer to the data, and allocate it in the member function
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// ConstructOsData().
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//
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// If we are constructing something when the search starts, it makes sense
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// that we need to destroy it when the search is over. That's what this
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// guy does.
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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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ALWildCardExpander::DestroyOsData() /* Tag protected function */
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{
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if ( mpOsData != 0 ) {
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if ( mpOsData->mHandle != 0xffffffff )
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DosFindClose( mpOsData->mHandle );
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delete mpOsData;
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}
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mpOsData = 0;
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}
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//
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// NAME
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//
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// ALWildCardExpander::GetNextFile()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// OS/2
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// C++ C
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//
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// SHORT DESCRIPTION
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//
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// Search for an additional file in the wildcard expansion.
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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 "wildcard.h"
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//
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// char *ALWildCardExpander::GetNextFile();
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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 "wildcard.h"
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//
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// char * ALExpanderGetNextFile( hALExpander this_object );
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//
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// VB SYNOPSIS
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//
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// None, at least not for OS/2.
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//
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// DELPHI SYNOPSIS
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//
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// None, at least not for OS/2.
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//
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// ARGUMENTS
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//
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// this_object : A reference or pointer to the ALWildCardExpander that
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// is performing the expansion. Note that the C++ member
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// version of this call doesn't have an explicit argument
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// here, since it has access to 'this' implicitly.
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//
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// DESCRIPTION
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//
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// The ALWildCardExpander has what amounts to six different internal
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// states. They are:
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//
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// Searching subdirectories, using another object
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//
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// Extracting the next wild spec from the input line
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//
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// Expanding the wild card to get the first matching file
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//
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// Expanding the wild card to get the next matching file
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//
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// Looking for the first subdirectory
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//
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// Looking for the next subdirectory
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//
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// For the most part, we keep track of the state using the mState
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// variable. However, we keep track of whether we are searching
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// subdirectories by examining the pointer to the next expander. If
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// it is non-null, it means we are in that state.
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//
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// RETURNS
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//
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// In the event that this routine is able to come up with a new
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// file name, it returns a character pointer to the name, which
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// is kept in member variable mResultFileName. If no new file
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// name could be cooked up, we return a 0, which means you are
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// done.
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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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char AL_DLL_FAR * AL_PROTO
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ALWildCardExpander::GetNextFile() /* Tag public function */
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{
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FILEFINDBUF3 buffer = { 0 };
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ULONG count;
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if ( mpOsData == 0 )
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return 0;
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for ( ; ; ) {
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if ( mpNextExpander ) {
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char *p = mpNextExpander->GetNextFile();
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if ( p )
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return p;
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delete mpNextExpander;
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mpNextExpander = 0;
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}
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switch ( mState ) {
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case GET_NEXT_WILD_NAME :
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if ( GetNextWildName() == 0 )
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return 0;
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mWildPathOnly = mFullWildName;
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mWildPathOnly.StripFileName();
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mWildNameOnly = mFullWildName;
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mWildNameOnly.StripPath();
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mState = GET_FIRST_FILE_NAME;
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break;
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case GET_FIRST_FILE_NAME :
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if ( mpOsData->mHandle != 0xffffffff ) {
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DosFindClose( mpOsData->mHandle );
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mpOsData->mHandle = 0xffffffff;
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}
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count = 1;
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if ( DosFindFirst( (PSZ) (char *) mFullWildName,
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&mpOsData->mHandle,
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FILE_READONLY,
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(PVOID) &buffer,
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sizeof( buffer ),
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&count,
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FIL_STANDARD ) || count == 0 ) { //Don't want to exclude RO files
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if ( miTraverseFlag )
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mState = GET_FIRST_DIRECTORY;
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else
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mState = GET_NEXT_WILD_NAME;
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break;
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}
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mState = GET_NEXT_FILE_NAME;
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mResultFileName = ALName( mWildPathOnly + buffer.achName );
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return mResultFileName;
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case GET_NEXT_FILE_NAME :
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count = 1;
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if ( DosFindNext( mpOsData->mHandle,
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(PVOID) &buffer,
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sizeof( buffer ),
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&count ) || count == 0 ) {
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if ( miTraverseFlag )
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mState = GET_FIRST_DIRECTORY;
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else
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mState = GET_NEXT_WILD_NAME;
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break;
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}
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mResultFileName = mWildPathOnly + buffer.achName;
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return mResultFileName;
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case GET_FIRST_DIRECTORY :
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count = 1;
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if ( mpOsData->mHandle != 0xffffffff ) {
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DosFindClose( mpOsData->mHandle );
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mpOsData->mHandle = 0xffffffff;
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}
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if ( DosFindFirst( (PSZ)(char *)( mWildPathOnly + "*.*" ),
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&mpOsData->mHandle,
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MUST_HAVE_DIRECTORY,
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(PVOID) &buffer,
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sizeof( buffer ),
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&count,
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FIL_STANDARD ) || count == 0 ) { //Don't want to exclude RO files
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mState = GET_NEXT_WILD_NAME;
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break;
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}
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mState = GET_NEXT_DIRECTORY;
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if ( strcmp( buffer.achName, ".." ) == 0 )
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break;
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if ( strcmp( buffer.achName, "." ) == 0 )
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break;
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mpNextExpander = new ALWildCardExpander( mWildPathOnly + buffer.achName + "\\" + (char *) mWildNameOnly, 1, mCase );
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break;
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//
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// This is just like GET_FIRST_DIRECTORY, except it gets to call
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// _dos_findnext() instead of _dos_findfirst().
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//
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case GET_NEXT_DIRECTORY :
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count = 1;
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if ( DosFindNext( mpOsData->mHandle,
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(PVOID) &buffer,
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sizeof( buffer ),
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&count ) || count == 0 ) {
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mState = GET_NEXT_WILD_NAME;
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break;
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}
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if ( strcmp( buffer.achName, ".." ) == 0 )
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break;
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if ( strcmp( buffer.achName, "." ) == 0 )
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break;
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mpNextExpander = new ALWildCardExpander( mWildPathOnly + buffer.achName + "\\" + (char *) mWildNameOnly, 1 );
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break;
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default :
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return 0;
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}
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}
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}
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