102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
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//
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// EX22CON.CPP
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//
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// C++/DOS Example program 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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// MEMBERS/FUNCTIONS DEMONSTRATED
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//
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//
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// DESCRIPTION
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//
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// This example program shows how you can set up a monitor and use
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// it to allow for an abort path during archiving. We derive a new
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// monitor class from ALBargraph. We are going to use ALBargraph's
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// existing functions, and just add a keyboard check. So to the end
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// user it will look exactly like the existing bargraph.
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//
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// REVISION HISTORY
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//
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// February 1, 1996 2.0A : Second release
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//
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#include <iostream.h>
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#include "arclib.h"
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#include "bargraph.h"
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#include "pkarc.h"
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#include "glarc.h"
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#include <conio.h>
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//
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// Our new class has to have a ctor, plus we add a Progress() function.
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// The Progress() function gets called a lot, so that is where we get
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// to check the keyboard for a keypress.
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//
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class MyMonitor : public ALBarGraph {
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public :
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MyMonitor() : ALBarGraph( AL_MONITOR_OBJECTS ){ ; }
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void AL_PROTO Progress( long object_so_far,
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ALStorage AL_DLL_FAR &object );
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virtual AL_INLINE_PROTO ~MyMonitor(){;}
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//
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// I don't really need these functions, but if I don't declare them here,
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// gcc goes looking for them, even though it doesn't need them.
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//
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protected :
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AL_PROTO MyMonitor( MyMonitor AL_DLL_FAR & );
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MyMonitor AL_DLL_FAR & AL_PROTO operator=( const MyMonitor AL_DLL_FAR & );
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};
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//
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// The Progress() function is clearly pretty lazy. The first thing
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// it does is call ALBarGraph::Progress(), so we don't have to do any
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// U/I stuff. All we do then is check to see if the user hit a keystroke.
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// If the did, we set the error flag on the object, which should lead
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// to an abort of the archiving function.
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//
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void MyMonitor::Progress( long object_tell,
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ALStorage& object )
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{
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ALBarGraph::Progress( object_tell, object );
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if ( kbhit() ) {
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getch();
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object.mStatus.SetError( AL_USER_ABORT, "User hit abort key..." );
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}
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}
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//
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// This should look just like EX00CON.CPP. It is nearly identical, with
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// the only important difference being the fact that it creates monitor
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// from my derived class.
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//
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int main()
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{
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MyMonitor monitor;
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cout << "Archive Library 2.0\nEX22CON.CPP\n\n";
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cout << "Our new class has to have a ctor, plus we add a Progress() function.\n";
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cout << "The Progress() function gets called a lot, so that is where we get\n";
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cout << "to check the keyboard for a keypress.\n\n";
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getch();
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#if defined( ZIP )
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ALPkArchive archive( "dos00.zip" );
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ALEntryList list( &monitor, PkCompressTools() );
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#else
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ALGlArchive archive( "dos00.gal" );
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ALEntryList list( &monitor, GlCompressTools() );
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#endif
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cout << "\nAdding input*.dat and *.bak to "
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<< archive.GetStorageObject()->mName
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<< " using an ALBarGraph\n\n";
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list.AddWildCardFiles( "input*.dat, *.bak" );
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archive.Create( list );
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cout << "\n" << archive.mStatus << "\n";
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return archive.mStatus;
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}
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