#!/usr/bin/perl -w

use strict;

use Getopt::Std;

our $opt_c;
getopts('c');

my $mod = shift @ARGV;
$mod =~ s/^.*\///;

print "module $mod where\n\n";
print "import Data.ByteString.Unsafe\n";
print "import Data.ByteString\n";
print "import System.IO.Unsafe\n\n";

sub header {
    print "{-# NOINLINE $_[0] #-}\n";
    print "$_[0] :: ByteString\n";
    print "$_[0] = unsafePerformIO \$ unsafePackAddress \"\\\n \\";
}
sub line {
    local $_ = @_ ? $_[0] : $_;
    s/\\/\\\\/g;
    s/\n/\\n/g;
    s/[^\x20-\x7e]/sprintf("\\x%04x\\&", ord($&))/eg;
    s/\"/\\"/g;
    print "$_\\\n \\";
}

if($opt_c) {
    header('theData');

    line "#ifdef JHC_RTS_INCLUDE\n";
    for(@ARGV) {
        local $_ = $_;
        s/^.*\///;
        line "#include \"$_\"\n";
    }
    line "#else\n";
    for(@ARGV) {
        line "/* $_ */\n";
        open my $fh, "<:utf8", $_ or die "$!: $_";
        line while(<$fh>);
    }
    line "#endif\n";
    print "\"#\n\n";

} else {

while (@ARGV) {
    my $fn = shift @ARGV;
    my $nn = lc $fn;
    $nn =~ s/^.*\///;
    $nn =~ s/\W/_/g;

    open F, "<:utf8", $fn or die "$!: $fn";

    $fn =~ s{/}{\\/}g;
    print "-- | Generated from $fn\n";
    header($nn);
    while (<F>) { line; }

    close F or die "$!: close $fn";

    print "\"#\n\n";
}

}

print "\n\n";