#! /usr/bin/perl
use strict;
use Getopt::Long;
use File::Basename;

# options
my @optlist = ("h|help!","v|verbose!","J=s","cp|classpath=s","C=s");
my $result = GetOptions @optlist;
our ($opt_h, $opt_v, $opt_J, $opt_cp, $opt_C);

# -h option || check the number of arguments
if ($opt_h || @ARGV < 2 ) {
    usage();
    exit 1;
}

# variables 
my ($file, @args) = @ARGV;
my ($jar_file, $jar_path, $jar_suffix) = fileparse($file, (".jar"));
my $plcomp       = "plcomp";
my $plcomp_opts  = "";
my $java_dest    = "$jar_file";
my $class_dest   = "$java_dest/classes";
my $jar          = "jar";
my $jar_opts     = "cf $file";

# check arguments
if (-d $java_dest) {
    &error("directory $java_dest is already exist.");
}

if ($jar_suffix ne ".jar") {
    &error("$file is not suffixed by .jar");
}

if ($opt_v) { # -v option
    $plcomp_opts .= " -v";
}

if ($opt_J) { # -J option
    $plcomp_opts .= " -J '$opt_J'";
    $jar_opts .= " -J'$opt_J'";
}

if ($opt_cp) { # -cp option
    $plcomp_opts .= " -cp '$opt_cp'";
} 

if ($opt_C) { # -C option
    if ($opt_C =~ /-d\s+/) {
	&error("can not use -d in -C option");
    }
    $plcomp_opts .= " -C '-d $class_dest $opt_C'";
} else {
    $plcomp_opts .= " -C '-d $class_dest'";
}

&message("mkdir $java_dest, 0777");
mkdir $java_dest, 0777 || &error("can not mkdir $java_dest");
&message("mkdir $class_dest, 0777");
mkdir $class_dest, 0777 || &error("can not mkdir $class_dest");

my $cmd1 = "$plcomp $plcomp_opts -d $java_dest @args";
&message($cmd1);
system($cmd1) && &error("$cmd1 fails");

my $cmd2 = "$jar $jar_opts -C $class_dest .";
&message($cmd2);
system($cmd2) && &error("$cmd2 fails");

exit 0;

# sub
sub usage {
    print "\nUsage: $0 [-options] jar-file prolog-file [prolog-files]\n";
    print "\n where options include:\n";
    print "\t-h -help         : print this help message\n";
    print "\t-v -verbose      : enable verbose output\n";
    print "\t-J option        : option must be enclosed by '.\n";
    print "\t                 : pass option to the Java Virtual Machine\n";
    print "\t                 : (ex. -J '-Xmx100m -verbose:gc')\n";
    print "\t-cp -classpath <class search path of directories and zip/jar files>\n";
    print "\t                 : A : separated list of directories and zip/jar files.\n";
    print "\t-C option        : option must be enclosed by '.\n";
    print "\t                 : pass option to the Java Compiler\n";
    print "\t                 : (ex. -C '-deprecation')\n";
    print "\n";
}

sub message {
    my ($x) = @_;
    if ($opt_v) { # check -v option
	print "\% $x\n";
    }
}

sub error {
    my ($x) = @_;
    print "\% ERROR: $x: $0\n";
    exit(1);
}