campo-sirio/al/examples/ex20con.cpp

//
// EX20CON.CPP
//
//  C++/DOS Example program for ArchiveLib 2.0
//
//  Copyright (c) Greenleaf Software, Inc. 1994 - 1996
//  All Rights Reserved
//
// MEMBERS/FUNCTIONS DEMONSTRATED
//
//  ALMonitor::ArchiveOperation()
//  ALMonitor::Progress()
//
// DESCRIPTION
//
//  This example program shows you a little demo of how to derive
//  a new class of ALMonitor.  This monitor just prints out a byte
//  count while the object progresses.  It doesn't support AL_MONITOR_JOB,
//  just the mode that monitors individual objects.  But it wouldn't
//  be too much more complicated if it did.
//
// REVISION HISTORY
//
//  February 1, 1996  2.0A  : Second release
//

#include <iostream.h>
#include <conio.h>

#include "arclib.h"
#include "pkarc.h"
#include "glarc.h"

//
// All you need to create a simple new class of ALMonitor is a new
// ctor, and two member functions.  The behavior of Progress() and
// ArchiveOperation() are fairly well documented, and you can see
// complete working examples in our three monitor classes provided with
// ArchiveLib.
//
class AL_CLASS_TYPE DemoMonitor: public ALMonitor {
     public :
          AL_INLINE_PROTO DemoMonitor() : ALMonitor( AL_MONITOR_OBJECTS ) {;}
          virtual AL_INLINE_PROTO ~DemoMonitor(){;}
//
// I don't really need these functions, but if I don't declare them here,
// gcc goes looking for them, even though it doesn't need them.
//
     protected :
        AL_PROTO DemoMonitor( DemoMonitor AL_DLL_FAR & );
        DemoMonitor AL_DLL_FAR & AL_PROTO operator=( const DemoMonitor AL_DLL_FAR & );
     protected :
          virtual void AL_PROTO Progress( long mlObjectSoFar,
                                          ALStorage& object );
          virtual void AL_PROTO
          ArchiveOperation( ALArchiveOperation operation,
                            ALArchive *,
                            ALEntry * );
};

//
// Unlike EX00CON.CPP and its brethren, this example insists that you
// provide an archive name and a list of input files on the command
// line.  It then performs a straightforward archive creation.
//
int main( int argc, char *argv[] )
{
    cout << "Archive Library 2.0\nEX20CON.CPP\n\n";
    cout << "All you need to create a simple new class of ALMonitor is a new\n";
    cout << "ctor, and two member functions.  The behavior of Progress() and\n";
    cout << "ArchiveOperation() are fairly well documented, and you can see\n";
    cout << "complete working examples in our three monitor classes provided with\n";
    cout << "ArchiveLib.\n\n";
    getch();

    if ( argc < 3 ) {
        cerr << "Usage: EX20CON archive files [files...]\n";
        return 1;
    }
    ALName archive_name = argv[ 1 ];
//
// Normally you wouldn't think this cast was necessary, but gcc can't
// seem to figure it out.
//
    DemoMonitor monitor;
#if defined( ZIP )
    if ( strchr( archive_name, '.' ) == 0 )
        archive_name = archive_name + ".zip";
    ALPkArchive archive( (char *) archive_name );
    ALEntryList list( &monitor, PkCompressTools() );
#else
    if ( strchr( archive_name, '.' ) == 0 )
        archive_name = archive_name + ".gal";
    ALGlArchive archive( (char *) archive_name );
    ALEntryList list( &monitor );
#endif
    for ( int i = 2 ; argv[ i ] && strlen( argv[ i ] ) ; i++ )
        list.AddWildCardFiles( argv[ i ] );
//
// We let the user input multiple wild-card specs, so it would be really
// easy to get some duplicates in the list.  These function calls
// make sure that can't happen.
//
    list.UnmarkDuplicates( list );
    list.DeleteUnmarked();
    cout << "\nList of files to be compressed: ";
    for ( ALEntry *entry = list.GetFirstEntry();
          entry;
          entry = entry->GetNextEntry() )
        cout << entry->mpStorageObject->mName << " ";
    cout << "\nCompressing...\n";
    archive.Create( list );
    return 0;
}

//
// The progress routine prints out the current object name and size, then
// does a CR with no LF.  This means it will keep overwriting the name
// of the object and the size as long as the archive progresses.
//
void AL_PROTO DemoMonitor::Progress( long object_tell,
                                     ALStorage& object )
{
     ALMonitor::Progress( object_tell, object );
     cout << object.mName
          << "  : "
          << mlByteCount
          << "/"
          << object.GetSize()
          << "\r"
          << flush;
}

//
// When we are done with an object, we print an LF, so that the last
// thing printed on the line gets left there.  For this particular
// class, that ought to be the object name followed by its file size.
//
void AL_PROTO DemoMonitor::ArchiveOperation( ALArchiveOperation operation,
                                             ALArchive *,
                                             ALEntry * )
{
    switch ( operation ) {
        case AL_EXTRACTION_CLOSE :
        case AL_COPY_CLOSE :
        case AL_INSERTION_CLOSE :
            cout << "\n";
            break;
        default :
            break;
    }
    cout << flush;
}