emoji

#!/bin/bash

# Colorizes hex bytes received on stdin (up to the first space).
# Typical use case:
# md5sum myfile | emoji
# Idea stolen from Oona Räisänen http://www.windytan.com/2014/10/visualizing-hex-bytes-with-unicode-emoji.html

# Use a UTF-8 aware editor to edit this script.

declare -a icons
icons=( 🌀  🌂  🌅  🌈  🌙  🌞  🌟  🌠  🌰  🌱  🌲  🌳  🌴  🌵  🌷  🌸 \
        🌹  🌺  🌻  🌼  🌽  🌾  🌿  🍀  🍁  🍂  🍃  🍄  🍅  🍆  🍇  🍈 \
        🍉  🍊  🍋  🍌  🍍  🍎  🍏  🍐  🍑  🍒  🍓  🍔  🍕  🍖  🍗  🍘 \
        🍜  🍝  🍞  🍟  🍠  🍡  🍢  🍣  🍤  🍥  🍦  🍧  🍨  🍩  🍪  🍫 \
        🍬  🍭  🍮  🍯  🍰  🍱  🍲  🍳  🍴  🍵  🍶  🍷  🍸  🍹  🍺  🍻 \
        🍼  🎀  🎁  🎂  🎃  🎄  🎅  🎈  🎉  🎊  🎋  🎌  🎍  🎎  🎏  🎒 \
        🎓  🎠  🎡  🎢  🎣  🎤  🎥  🎦  🎧  🎨  🎩  🎪  🎫  🎬  🎭  🎮 \
        🎯  🎰  🎱  🎲  🎳  🎴  🎵  🎷  🎸  🎹  🎺  🎻  🎽  🎾  🎿  🏀 \
        🏁  🏂  🏃  🏄  🏆  🏇  🏈  🏉  🏊  🐀  🐁  🐂  🐃  🐄  🐅  🐆 \
        🐇  🐈  🐉  🐊  🐋  🐌  🐍  🐎  🐏  🐐  🐑  🐒  🐓  🐔  🐕  🐖 \
        🐗  🐘  🐙  🐚  🐛  🐜  🐝  🐞  🐟  🐠  🐡  🐢  🐣  🐤  🐥  🐦 \
        🐧  🐨  🐩  🐪  🐫  🐬  🐭  🐮  🐯  🐰  🐱  🐲  🐳  🐴  🐵  🐶 \
        🐷  🐸  🐹  🐺  🐻  🐼  🐽  🐾  👀  👂  👃  👄  👅  👆  👇  👈 \
        👉  👊  👋  👌  👍  👎  👏  👐  👑  👒  👓  👔  👕  👖  👗  👘 \
        👙  👚  👛  👜  👝  👞  👟  👠  👡  👢  👣  👤  👥  👦  👧  👨 \
        👩  👪  👮  👯  👺  👻  👼  👽  👾  👿  💀  💁  💂  💃  💄  💅 )


# Read from stdin character by character
while IFS= read -N 1 char ; do
  # Is it a hex character?
  if [[ "$char" =~ [0-9a-fA-F] ]] ; then
    # Read next character and check whether it's hex too
    IFS= read -N 1 secondchar
    if [[ "$secondchar" =~ [0-9a-fA-F] ]] ; then
      # We have a hex byte! Convert to decimal to use as array index.
      decimalvalue=$((16#$char$secondchar))
      echo -n "${icons[$decimalvalue]}"
    else
      echo -n "$char$secondchar"
    fi
  elif [ "$char" = " " ] ; then
    # We've reached a space. Print rest of the line as is.
    echo -n "$char"
    IFS= read restofline
    echo "$restofline"
  else
    # It's a non-hex character. Just print it without modification.
    echo -n "$char"
  fi
done