255 lines
6.5 KiB
C++
Executable File
255 lines
6.5 KiB
C++
Executable File
//
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// CXL_PKNGN.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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// ALPkCompressorLevel()
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// ALPkDecompressorLevel()
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// ALPkCompressorSetLevel()
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//
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// DESCRIPTION
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//
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// This file contains all the C translation layer routines that provide
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// member access for class ALPkCompressor and class ALPkDecompressor.
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//
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// Functions that simply provide a translation layer for an existing C++
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// function are always located in the same file as the C++ function. The
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// functions in this file don't have any existing C functions to attach
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// to, since they implement either pure virtual functions or member access
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// routines.
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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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#include "pkengn.h"
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//
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// NAME
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//
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// ALPkCompressorLevel()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// Console Windows PM
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// C VB Delphi
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//
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// SHORT DESCRIPTION
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//
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// Get the compression level for a PKWare compression engine.
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//
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// C++ SYNOPSIS
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//
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// None, C++ programmers have public access to the option member
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// of the compressor class, so no access function is needed.
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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 "pkengn.h"
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//
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// short int ALPkCompressorLevel( hALCompressor this_object )
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//
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// VB SYNOPSIS
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//
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// Declare Function ALPkCompressorLevel Lib "AL20LW"
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// (ByVal this_object& ) As Integer
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//
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// DELPHI SYNOPSIS
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//
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// function ALPkCompressorLevel( this_object : hALCompressor ) : Integer;
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//
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// ARGUMENTS
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//
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// this_object : The compressor whose option member needs to be examined.
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//
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// DESCRIPTION
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//
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// This C/VB translation function provides access to the C++ data member
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// ALPkCompressor::option. The function returns a number ranging from
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// 0 to 4, whose values correspond to PKWare compression levels
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// Copy, Normal, Maximum, Fast, and SuperFast.
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//
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// This function first tests its handle argument for correct type (when in
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// debug mode), then casts and returns the data member. Note that I
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// increment the member by 1 when returning it. I forget why.
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//
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// RETURNS
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//
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// The option integer stored in the compression engine.
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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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extern "C" AL_LINKAGE short int AL_FUNCTION
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ALPkCompressorLevel( hALCompressor this_object ) /* Tag public function */
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{
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AL_ASSERT_OBJECT( this_object, ALPkCompressor, "ALPkCompressorLevel" );
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return (short int) ( ( (ALPkCompressor *) this_object )->option + 1 );
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}
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//
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// NAME
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//
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// ALPkDecompressorLevel()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// Console Windows PM
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// C VB Delphi
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//
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// SHORT DESCRIPTION
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//
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// Get the compression level for a PKWare decompression engine.
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//
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// C++ SYNOPSIS
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//
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// None, C++ programmers have public access to the option member
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// of the decompressor class, so no access function is needed.
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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 "pkengn.h"
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//
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// short int ALPkDecompressorLevel( hALDecompressor this_object )
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//
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// VB SYNOPSIS
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//
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// Declare Function ALPkDecompressorLevel Lib "AL20LW"
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// (ByVal this_object& ) As Integer
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//
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// DELPHI SYNOPSIS
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//
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// function ALPkDecompressorLevel( this_object : hALDecompressor ) : Integer;
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//
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// ARGUMENTS
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//
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// this_object : The handle of the decompressor whose option member
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// needs to be examined.
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//
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// DESCRIPTION
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//
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// This C/VB translation function provides access to the C++ data member
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// ALPkDecompressor::option. The function returns a number ranging from
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// 0 to 4, whose values correspond to PKWare compression levels
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// Copy, Normal, Maximum, Fast, and SuperFast.
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//
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// This function first tests its handle argument for correct type (when in
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// debug mode), then casts and returns the data member. Note that I
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// increment the member by 1 when returning it. I forget why.
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//
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// RETURNS
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//
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// The option integer stored in the decompression engine.
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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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extern "C" AL_LINKAGE short int AL_FUNCTION
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ALPkDecompressorLevel( hALDecompressor this_object ) /* Tag public function */
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{
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AL_ASSERT_OBJECT( this_object, ALPkDecompressor, "ALPkDecompressorLevel" );
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return (short int) (( (ALPkDecompressor *) this_object )->option + 1);
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}
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//
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// NAME
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//
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// ALPkCompressorSetLevel()
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//
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// PLATFORMS/ENVIRONMENTS
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//
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// Console Windows PM
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// C VB Delphi
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//
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// SHORT DESCRIPTION
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//
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// Set the compression level for a PKWare compression engine.
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//
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// C++ SYNOPSIS
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//
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// None, C++ programmers have public access to the option member
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// of the compressor class, so no access function is needed.
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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 "pkengn.h"
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//
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// void ALPkCompressorSetLevel( hALCompressor this_object,
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// short int level )
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//
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// VB SYNOPSIS
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//
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// Declare Sub ALPkCompressorSetLevel Lib "AL20LW"
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// (ByVal this_object&, ByVal level% ) As Integer
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//
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// DELPHI SYNOPSIS
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//
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// procedure ALPkCompressorSetLevel( this_object : hALCompressor;
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// level : Integer );
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//
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// ARGUMENTS
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//
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// this_object : The handle of the Compressor whose option member
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// needs to be modified.
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//
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// level : The new setting a number from 0 to 4.
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//
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// DESCRIPTION
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//
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// This C/VB translation function provides access to the C++ data member
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// ALPkCompressor::option. The member is set to a number ranging from
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// 0 to 4, whose values correspond to PKWare compression levels
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// Copy, Normal, Maximum, Fast, and SuperFast.
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//
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// This function first tests its handle argument for correct type (when in
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// debug mode), then modifies the data member. Note that I
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// decrement the member by 1 when storing it. I forget why.
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//
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// RETURNS
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//
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// None.
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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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extern "C" AL_LINKAGE void AL_FUNCTION
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ALPkCompressorSetLevel( hALCompressor this_object, /* Tag public function */
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short int level )
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{
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AL_ASSERT_OBJECT( this_object, ALPkCompressor, "ALPkCompressorSetLevel" );
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((ALPkCompressor *) this_object )->option = (ALPkCompressor::_option) level;
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}
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