#!/usr/bin/perl -w
#
# fixpaths  - substitute makefile variables into text files


$usage = "Usage: $0 [-D<variable>=<value>] [[infile] ...]\n";

if (!defined(@ARGV)) { die ("$usage"); }

# read in the command line and get some definitions
while ($_=$ARGV[0], /^-/) {
  if (/^-D/) {
    # definition
    shift(@ARGV);
    if ( /-D(.*)=(.*)/ ) {
      $def{"$1"}=$2;
    } else {
      die ("$usage$0: error in command line arguments.\n");
    }
  } else {
    &usage; die ("$usage$0: unknown option '-".$ARGV[0][1]."'\n");
  }
} # while parsing arguments

if (!defined(%def)) {
  die ("$0: nothing to do - no substitutions listed!\n");
}

for $f (@ARGV) {

  $f =~ /(.*\/)*(.*)$/;
  $of = $2; $of =~ s/.in$//;

  print("Making substitutions for $of\n");

  open(IN, "<$f")          || die ("$0: input file $f missing!\n");
  if (open(OUT, ">$of")) {
    while (<IN>) {
      for $s (keys(%def)) {
	s#\@$s\@#$def{$s}#;
      } # for $s
      print OUT;
    } # while <IN>
  } # if (outfile open)
} # for $f

exit 0;