#!/usr/bin/perl

# taken from the exim4 package

open IN, '<&STDIN';
#open IN, 'dump';
{
  local $/;
  $content=<IN>;
}
close IN;

($title,$body,$links) =
  ($content =~
   /^(.*)\n\s+_+\n\n
    (\s+Table\ of\ Contents.*)
    (References\n\n\s+1\..*)/sx);

die unless ($title);

print "$title\n".'-' x length($title)."\n\n";

# Sort out local links.
# The regex might not be entirely accurate.
foreach (split /\n/, $links) {
  ($index, $url) = /^\s*(\d+)\. (.+)$/;
  if ($url !~ /file:\/\/.*#.*$/) {
    $links[$index] = $url;
  }
}

$linkno=0;
# Split paragraphs
foreach (split /\n(?:\s+_+\n)?\n/, $body) {
  my $footnote = '';
  my $rest = $_;
  while ( $rest =~ /^(.*?)\[(\d+)\](.*)$/s ) {
    print $1;
    if (defined $links[$2]) {
      $linkno++;
      print "[$linkno]";
      $footnote.="     $linkno. $links[$2]\n";
    }
    $rest = $3;
  }
  print $rest;
  print "\n\n";
  if ($footnote ne '') {
    print "$footnote\n";
  }
}
