#!/usr/bin/perl

########################################################
my $DISPLAYALERT		= $ARGV[0] . "/Contents/Resources/Alert.app/Contents/MacOS/Alert";
my $SYSTEM_VERS			= "/System/Library/CoreServices/SystemVersion.plist";
########################################################

DO_CHECKS: 
{
	unless ( CheckVersion( $SYSTEM_VERS, "10.4", "ProductVersion", "<" )) {
		########################################################
		# Pages must not be running
		my $APP					= "Pages\.app";
		my $APP_IS_RUNNING 		= 0;
		my $RUNNING_ERROR		= "AppRunning";

		########################################################
		open(PSOUT, "/bin/ps -awwx |");
		while( <PSOUT> ) {
			if( /$APP/ ) {
				$APP_IS_RUNNING = 1;
			}
		}
		close(PSOUT);
			
		while ($APP_IS_RUNNING == 1) {
				$ENV{'ALERT_APP_ACTION'} = $RUNNING_ERROR;
				system($DISPLAYALERT,"");
				# per nat torkington
		
				$APP_IS_RUNNING = 0;
		
				open(PSOUT, "/bin/ps -awwx |");
				while( <PSOUT> ) {
					if( /$APP/ ) {
						$APP_IS_RUNNING = 1;
					}
				}
				close(PSOUT);
		} # while app is running, stay stuck here
	}
}

exit(0);

########################################################

sub CheckVersion
{
    my $path            = $_[0];
    my $version         = $_[1];
    my $keyName         = $_[2];
    my $operator        = $_[3];
    
    my $oldSeperator;
    my $plistData;
    my @items;
    my $item;
    my $versiondata;
    my $i;
    my @theVersionArray;
    my %versiondata;
    my @versionArray;

    # if there's no THERE there, we return FALSE
    if (! -e $path) {
        return 0;
    }

    if (!$operator) {
        $operator = "==";
    }

    $oldSeperator = $/;
    $/ = \0;

    open( PLIST, "$path") || do {
        return 0;
    };

    $plistData = <PLIST>;
    $plistData =~ /<dict>(.*?)<\/dict>/gis;

    @items = split(/<key>/, $plistData);

    shift @items;
    foreach $item (@items) {
        $item =~ /(.*?)<\/key>.*?<string>(.*?)<\/string>/gis;
        $versiondata{ $1 } = $2;
    }

    close(PLIST);

    $/ = $oldSeperator;

    @theVersionArray = split(/\./, $versiondata{$keyName});
    for ($i = 0; $i < 3; $i++) {
        if(!$theVersionArray[$i]) {
            $theVersionArray[$i] = '0';
        }
    }

    @versionArray = split(/\./, $version);
    
    my $actualVersion;

    for ($i = 0; $i < 3; $i++) {
        if (($theVersionArray[$i] != $versionArray[$i]) or ($i == 2)) {

            $actualVersion = $theVersionArray[$i];
            $version = $versionArray[$i];

            last;
        }
    }

    my $expression = '$actualVersion ' . $operator . ' $version';
    if( eval ($expression) )
    {
        return 1;
    }
    else
    {
        return 0;
    }

}
