#!/bin/bash

if [ ! -d ${1} ]; then
  echo "recode: invalid or missing directory \`${1}'; exit.";
  exit 1;
fi

if iconv /dev/null; then
  :
else
  echo "recode: unable to invoke iconv(1) converter utility.";
fi

if [ -z "${LOGONTMP}" ]; then
  LOGONTMP=${HOME}
fi

DATE=`date "+%Y-%m-%d"`
LOG=${LOGONTMP}/recode.${DATE}.log

files=$(find ${1} -type f -print)

{
  for file in ${files}; do
    if [ "${file}" != "${file%%.gz}" ]; then
      echo "skipping \`${file}' (compressed)";
      continue;
    fi
    if [ "${file}" != "${file%%-}" ]; then
      echo "skipping \`${file}' (back-up)";
      continue;
    fi
    if iconv -f ISO-8859-1 -t ISO-8859-1 < ${file} > /dev/null 2>&1; then
      echo -n "recoding \`${file}' ... "; 
      mv ${file} ${file}-;
      iconv -f ISO-8859-1 -t UTF-8 ${file}- > ${file}
      echo "done";
    else
      echo "skipping \`${file}' (UTF-8)";
    fi
  done
} 2>&1 | tee -a ${LOG}