#!/usr/local/bin/perl

###
### makeheader - generate a header file out of several header file (ver 1.1)
###

if ( ( $#ARGV == 0 ) && ( $ARGV[0] eq '-help' ) ) {
    die "\nThis is makeheader, a header file generation tool.\n\n" .
	"   with makeheader it is possible to generate a single header\n" .
	"   file out of several other header files\n" .
	"   the parts to be included in the generated header file have\n" .
	"   to be marked with /*BEGINPUBLIC*/ and /*ENDPUBLIC*/\n" .
        "   to include a header file into the generated header file use\n" .
	"   the command .INCLUDE name.h on a single line\n\n" .
        "usage: makeheader <template> <outfile>\n\n";
}

if ( $#ARGV < 1 ) {
    die "usage: makeheader <template> <outfile>\n\n";
}

$infile = shift( @ARGV );
$outfile = shift( @ARGV );

open( INFILE, $infile ) || 
    die "makeheader: can not open template file $infile for reading!\n";
open( OUTFILE, ">$outfile" ) ||
    die "makeheader: can not open header file $outfile for writing!\n";

while( $currentline = <INFILE> ) {
    if ( index( $currentline, ".INCLUDE" ) == 0 ) {
	$currentline =~ s/.INCLUDE //;
	open( INCLFILE, $currentline ) ||
	    die "can not open included file '$currentline' for reading!\n";
	while ( $inclline = <INCLFILE> ) {
	    if ( index( $inclline, "/*BEGINPUBLIC*/" ) >= 0 ) {
		while (( $inclline = <INCLFILE> ) &&
		       ( index( $inclline, "/*ENDPUBLIC*/" ) < 0 )) {
		    print OUTFILE $inclline;
		}
	    }
	}
    }
    else {
	print OUTFILE $currentline;
    }
}

close OUTFILE;
close INFILE;