#!/bin/sh

set -e

pofile=$1
charset=$(perl -n -e 's/^.*charset=([\w-]+).*$/uc($1)/e && print' "$pofile")

echo pofile=$pofile charset=$charset

if [ "$charset" = "UTF-8" ]
then
    echo >&2 charset is already utf-8
    exit 1
fi

set -x

iconv -f $charset -t utf-8 "$pofile" >"$pofile".tmp
perl -p -e 's/charset=([\w-]+)/charset=UTF-8/' "$pofile".tmp >"$pofile"
rm -f "$pofile".tmp