#!@pathperl@

# This file is part of the nesC compiler.
#    Copyright (C) 2002 Intel Corporation
# 
# The attached "nesC" software is provided to you under the terms and
# conditions of the GNU General Public License Version 2 as published by the
# Free Software Foundation.
# 
# nesC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with nesC; see the file COPYING.  If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

$prefix = "@prefix@";
$exec_prefix = "@exec_prefix@";
$nescc = "$exec_prefix/bin/nescc";
$NCDIR = "@libdir@/ncc";

push @INC, "$NCDIR";

for ($i = 0; $i <= $#ARGV; $i++) {
    $_ = $ARGV[$i];

    if (/^-/) {
	if (/^-java-classname=(.*)$/) {
	    $java_classname = $1;
	}
	elsif (/^-java-extends=(.*)$/) {
	    $java_extends = $1;
	}
	elsif (/^-python-classname=(.*)$/) {
	    $python_classname = $1;
	}
	elsif (/^-python-extends=(.*)$/) {
	    $python_extends = $1;
	}
	elsif (/^-c-prefix=(.*)$/) {
	    $c_prefix = $1;
	}
	elsif (/^-o/) {
	    ($i, $ofile) = &extractarg($i);
	}
	elsif (/^-nescc=(.*)$/) {
	    $nescc = $1;
	}
	# pass ncc options on through
	# (yes, -o was captured above. This is "generic" code)
	elsif (/^-[oILxubV]/) {
	    # pass option and arg through unchanged
	    $opt = substr $_, 1, 1;
	    ($i, $arg) = &extractarg($i);
	    push @args, "-$opt$arg";
	}
	elsif ($i < $#ARGV &&
	       (/^-idirafter$/ || /^-include$/ || /^-imacros$/ ||
		/^-iprefix$/ || /^-iwithprefix$/ || /^-iwithprefixbefore$/ ||
		/^-isystem$/ || /^-Xlinker$/)) {
	    # convert argument filename which is in next arg
	    push @args, $_;
	    push @args, $ARGV[++$i];
	}
	else {
	    push @args, $_;
	    $verbose = 1 if /^-v$/;
	}
    }
    else {
	if (!defined($target)) {
	    $target = $_;
	}
	elsif (!defined($cfile)) {
	    $cfile = $_;
	}
	else {
	    $csts = 1;
	    if (/^\w+$/) {
		$cst_names{$_} = 1;
	    }
	    else {
		$cst_files{$_} = 1;
	    }
	}
    }
}
&usage("no target specified") if !defined($target);
&usage("no nesC file specified") if !defined($cfile);
&usage("no constants requested") if !$csts;

unshift @args, "-fsyntax-only";
unshift @args, "-fnesc-csts";
unshift @args, "$nescc";
push @args, "-x";
push @args, "nesc";
push @args, $cfile;

print STDERR join(" ", @args), "\n" if $verbose;
open(NESC, '-|', @args) or die "$args[0] not found";
@allcsts = <NESC>;
close NESC;

foreach (@allcsts) {
    die "invalid nesC output" if !/(\w+) "(.*)" (\w+) (.*)/;
    $name = $1;
    $path = $2;
    $val = $4;
    $path =~ /([^\/\\]+)$/;
    $file = $1;
    $csts{$name} = $val if ($cst_names{$name} || $cst_files{$file});
}

if ($?) {
    print STDERR "failed to parse nesC file $cfile\n";
    exit 1;
}

if (!-f "$NCDIR/gencst$target.pm") {
    print STDERR "Unknown tool $target\n";
    exit 2;
}

if ($ofile) {
    close STDOUT;
    if (!open STDOUT, ">$ofile") {
	print STDERR "failed to create $ofile\n";
	exit 1;
    }
}

require "gencst$target.pm";
&gen($classname, %csts);
$completed = 1;

sub usage()
{
    my ($error) = @_;

    print STDERR "$error\n\n" if $error;

    print STDERR "Usage: $0 [options] tool nesC-file filenames-or-constant-names...\n";
    print STDERR "  general options are\n";
    print STDERR "    -I dir                            Add include directory\n\n";
    print STDERR "    -target=NCC-TARGET                Select mote architecture\n";
    print STDERR "                                      (default is ncc's, use pc with tossim)\n";
    print STDERR "  target specific options are\n";
    print STDERR "    java:\n";
    print STDERR "      -java-classname=FULL-CLASS-NAME Select class name (required)\n";
    print STDERR "      -java-extends=CLASS-NAME        Select class to extend\n";
    print STDERR "                                      (default net.tinyos.message.Message)\n";
    print STDERR "    python:\n";
    print STDERR "      -python-classname=FULL-CLASS-NAME Select class name (required)\n";
    print STDERR "      -python-extends=CLASS-NAME        Select class to extend\n";
    print STDERR "                                      (default tinyos.message.Message)\n";
    print STDERR "    C:\n";
    print STDERR "      -c-prefix=PREFIX                  Add a prefix to constant names\n";

    exit 2;
}

sub extractarg {
    local ($i) = @_;

    if (length($ARGV[$i]) == 2) {
	$arg = $ARGV[++$i];
    }
    else {
	$arg = substr($ARGV[$i], 2);
    }
    return ($i, $arg);
}

sub END() {
    unlink $ofile unless !$ofile || $completed;
}