#!/bin/bash
# Emulate nroff with groff.

prog="$0"
charset_in=iso-8859-1
charset_out=`locale charmap 2>/dev/null`
opts=

for i
do
  case $1 in
    -c)
      opts="$opts -P-c" ;;
    -h)
      opts="$opts -P-h" ;;
    -[eq] | -s* | -u* | -T* )
      # ignore these options
      ;;
    -[mrnoT])
      echo $"option $1 requires an argument" >&2
      exit 1 ;;
    -[iptSUC] | -[mrno]*)
      opts="$opts $1" ;;
    -v | --version)
      echo $"GNU nroff (groff) with Red Hat i18n/l10n support"
      exit 0 ;;
    --legacy)
      shift
      charset_in=$1 ;;
    --help)
      echo $"usage: $prog [-cChipt] [-mNAME] [-nNUM] [--legacy CHARSET] [-oLIST] [-rCN] [FILE...]"
      exit 0 ;;
    --)
      shift
      break ;;
    -)
      break ;;
    -*)
      echo $"$prog: invalid option $1" >&2
      exit 1 ;;
    *)
      break ;;
  esac
  shift
done

TMPFILE=$(mktemp /tmp/man.XXXXXX)
trap "rm -f $TMPFILE" 0 1 2 3 15

cat ${1+"$@"} >| ${TMPFILE}

if iconv -f utf-8 -t utf-8 -o /dev/null ${TMPFILE} 2>/dev/null
then
  charset_in=utf-8  
else
  echo XXX
  echo XXX $"WARNING: old character encoding and/or character set"
  echo XXX
fi

# en_US is chosen arbitrarily; any UTF-8 locale should work
export LC_ALL=en_US.UTF-8

# This shell script is intended for use with man, so warnings are
# probably not wanted.  Also load nroff-style character definitions.

/usr/bin/iconv -f ${charset_in} -t utf-8 ${TMPFILE} | \
    /usr/bin/groff -mtty-char -Tutf8 $opts 2>/dev/null | \
    /usr/bin/iconv -f utf-8 -t ${charset_out}//translit

rm -f ${TMPFILE}

# eof