#!/usr/local/bin/perl
#eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
#	if $running_under_some_shell;

require "getopts.pl";
&Getopts('o:b:');
#die "Usage: map2g [-o outfile] [-b base-module] [infile]\n" if @ARGV > 1;

#
# Get stdout set up and the default module name
#
if ( $opt_o ) {
    #
    # If they give us an output file name, open it
    # and use it as the module name (minus path and extension).
    #
    open(STDOUT, ">$opt_o") || die "Couldn't open $opt_o for output: $!\n";
    ($m = $opt_o) =~ s#(.*/)?(.*)\.g$#$2#;
} elsif (@ARGV) {
    #
    # If they give us an input file,
    # use it as the output file name (minus path and extension plus .g)
    # and use it as the module name (minus path and extension).
    #
    ($m = $ARGV[0]) =~ s#(.*/)?(.*)\.map$#$2#;
    unless ( -e "$m.g" ) {
	open(STDOUT, ">$m.g") || die "Couldn't open $m.g for output: $!\n";
    }
} else {
    #
    # OK, we got nothin', output is stdout and module name is junk.
    #
    $m = 'xxx';
}

#
# This is the base-module option
#
if ( $opt_b ) {

    # Try to open it as a file
    if ( open(BM, "$opt_b") ) {

	# assume that it's an old-style map, period or scenario file.
	@types = grep(s/^\s*"(.)"\s+.*\s+ttype\s*(;.*)*$/$1/, <BM>);
	$c = join('', @types);
    }

    # strip the path and extension (if there is one).
    $opt_b =~ s#(.*/)?(.*)\.(map|per|scn)$#$2#;

    # otherwise it's probably just a name.
    $b = qq/  (default-base-module "$opt_b")\n/;
}

while (<>) {

    # Nab the header line...
    if (/^Xconq . [\+-]* \s*(.*)$/) {
        print qq/(game-module "$m"\n$b  (blurb "$1")\n  )\n/;
	next;
    }

    # Get the world size...
    if (/^Map ([0-9]*) ([0-9]*) /) {
	local($i);

	# if this is .map file the the world is cylindrical.
	print qq/(area $1 $2) (world $1)\n  (area (terrain (by-char "$c")\n/;
	for ($i = 0; $i < $2; ++$i) {
	    $_ = <>;
	    chop;
	    print qq/  "$_"\n/;
	}
	# close the parens at the end of the map.
	print "  ))\n";
	next;
    }

    s/^/;/;
    print;
}