#! /bin/sh
#
# This file is part of DisOrder
# Copyright (C) 2004, 2005, 2007, 2008, 2010 Richard Kettlewell
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#

set -e

stdhead=false
extension="html"
GNUSED=${GNUSED:-sed}

while test $# -gt 0; do
  case "$1" in
  -stdhead )
    stdhead=true
    ;;
  -extension )
    shift
    extension=$1
    ;;
  -- )
    shift
    break
    ;;
  -* )
    echo >&2 "ERROR: unknown option $1"
    exit 1
    ;;
  * )
    break
    ;;
  esac
  shift
done

for page; do
  title=$(basename $page)
  output=$page.$extension
  echo "$page -> $output" >&2
  exec > $output.new
  echo "<html>"
  echo " <head>"
  if $stdhead; then
    echo "@quiethead@#"
  fi
  echo "  <title>$title</title>"
  echo " </head>"
  echo " <body>"
  if $stdhead; then
    echo "@stdmenu{}@#"
  fi
  printf "   <pre class=manpage>"
  # this is kind of painful using only BREs
  nroff -Tascii -man "$page" | ${GNUSED} \
                        '1d;$d;
                         1,/./{/^$/d};
                         s/&/\&amp;/g;
                         s/</\&lt;/g;
                         s/>/\&gt;/g;
                         s/@/\&#64;/g;
                         s!\(.\)\1!<b>\1</b>!g;
                         s!\(&[#0-9a-z][0-9a-z]*;\)\1!<b>\1</b>!g;
                         s!_\(.\)!<i>\1</i>!g;
                         s!_\(&[#0-9a-z][0-9a-z]*;\)!<i>\1</i>!g;
                         s!</\([bi]\)><\1>!!g'
  echo "</pre>"
  if $stdhead; then
    echo "@credits"
  fi
  echo " </body>"
  echo "</html>"
  mv $output.new $output
done
