#!/usr/bin/perl --
use strict; use warnings;
use File::Temp ();
use DB_File;

Main( @ARGV );
exit( 0 );
sub Main {
    Shabba(); 
    my $temp = File::Temp->new()->filename;
    my $btnf = DB_File::BTREEINFO->new;
    $btnf ->{'flags'} = R_DUP;
    HitAndQuit( $temp, $btnf , qw[ 1 2 1 4 ] );
    HitAndQuit( $temp, $btnf , qw[ 2 6 2 8 ] );
    HitAndQuit( $temp, $btnf , qw[ b o b s ] );
    unlink $temp or die "unlink $temp: $!";
}

sub HitAndQuit {
    my( $temp, $BTREEINFO , @rest ) = @_;
#~     my $tree =
    tie my(%foo),
        'DB_File',
        $temp,
        O_RDWR|O_CREAT,
        0666,
        $BTREEINFO 
            or die "Cannot tie ($temp): $!";
    for( my $ix = 0; $ix <  @rest ; $ix+=2 ){
        $foo{ $rest[ $ix] } = $rest[ $ix+1 ];
    }
    DDUP( tied %foo );
#~     untie $tree;
}


sub DDUP {
    my ( $x ) = @_;
    for (
        my $st = $x->seq( my( $key, $value), R_FIRST ) ;
        $st == 0 ;
        $st = $x->seq( $key, $value, R_NEXT )
      )
    {
        print "{ $key }{ $value } ";
    }
    print "\n";
}


sub Shabba {
    print <<"SHABBA";
### $]
#~ \$DB_File::db_ver       $DB_File::db_ver
#~ \$DB_File::db_version   $DB_File::db_version
#~ \$DB_File::VERSION      $DB_File::VERSION
########
SHABBA
}
__END__
### 5.014001
#~ $DB_File::db_ver       5.001025
#~ $DB_File::db_version   5.1
#~ $DB_File::VERSION      1.824
########
{ 1 }{ 2 } { 1 }{ 4 }
{ 1 }{ 2 } { 1 }{ 4 } { 2 }{ 6 } { 2 }{ 8 }
{ 1 }{ 2 } { 1 }{ 4 } { 2 }{ 6 } { 2 }{ 8 } { b }{ o } { b }{ s }