#!/usr/bin/perl

use Fcntl qw(/^O_/);

(my $Me = $0) =~ s-.*/--;

# XXX This should read your config file and default to the database type
# you specified there.  The library should be extended to support this.

my $module = my $def_module = 'AnyDBM_File';
if (@ARGV && $ARGV[0] =~ s/^-m//) {
    $module = shift;
    if ($module eq '') {
	@ARGV or die "$Me: no arg for -m specified\n";
	$module = shift;
    }
}

if (@ARGV != 2 || (grep /^-/, @ARGV)) {
    print "\n";
    print "  usage:  $Me [-m <dbm module>] <sourcefile> <dbmname>\n";
    print "\n";
    print "           adds elements in <sourcefile> to dbm <dbmname>\n";
    print "\n";
    print "           <sourcefile> is a text file of one-per-line\n";
    print "                <key> => <value>\n";
    print "           pairs, \n";
    print "\n";
    print "           <dbmname> the the basename of the dbm db\n";
    print "           (e.g. 'infobot-is')\n";
    print "\n";
    print "           <dbm module> is an alternate for $def_module,\n";
    print "           eg DB_File\n";
    print "\n";

    exit(1);
}

eval "require $module"; die if $@;
$sourcefile = $ARGV[0];
$dbname = $ARGV[1];

open(IN, $sourcefile) 
    || die "can\'t open $sourcefile as source\n";

tie(%db, $module, $dbname, O_RDWR | O_CREAT, 0666)
    || die "Couldn't open \"$dbname\" with $module: $!";
$| = 1;

while (<IN>) {
    chomp;
    next if /^\s*$/;

    if (!/=>/) {
	print "skipping: $_";
	next;
    }
    my ($left, $right) = split(/\s*=>\s*/, $_, 2);
    
    $left =~ s/^\s*//;
    $left =~ tr/A-Z/a-z/;
    $right =~ s/\s+$//;

    $db{$left} = $right;
    print $left ." => ". $right ."\n" if (!(++$dcount % 100));
}

close(IN);
untie(%db) || die "untie() on $dbname failed: $!";