Bash transliteration script

translit.sh

#!/bin/bash
# translit function
# ----------------------
translit() {

  local trs="${1// /-}"

  trs=$(sed "y/абвгдезийклмнопрстуфхцы/abvgdezijklmnoprstufxcy/" <<< "${trs}")
  trs=$(sed "y/АБВГДЕЗИЙКЛМНОПРСТУФХЦЫ/ABVGDEZIJKLMNOPRSTUFXCY/" <<< "$trs")
  trs=${trs//ч/ch}
  trs=${trs//Ч/CH}
  trs=${trs//ш/sh}
  trs=${trs//Ш/SH}
  trs=${trs//ё/hyo}
  trs=${trs//Ё/HYO}
  trs=${trs//ж/zh}
  trs=${trs//Ж/ZH}
  trs=${trs//щ/sh}
  trs=${trs//Щ/SH}
  trs=${trs//э/e}
  trs=${trs//Э/E}
  trs=${trs//ю/ju}
  trs=${trs//Ю/JU}
  trs=${trs//я/ja}
  trs=${trs//Я/JA}
  trs=${trs//ъ/}
  trs=${trs//Ъ/}
  trs=${trs//ь/}
  trs=${trs//Ь/}

  hash iconv &> /dev/null && trs=$(iconv -c -f UTF8 -t ASCII//TRANSLIT <<< "$trs")
  echo "$trs";
}

translit "${@}"