Announce (speak) the song currently playing in MPD

mpd-announce

#! /bin/sh -e

# Requires https://github.com/profh/romanic
# gem install romanic

device="default:CARD=X20"
lock="/run/lock/mpd-announce"

dotlockfile -r 0 -p "$lock" || exit 0
trap "dotlockfile -p -u \"$lock\"" EXIT TERM INT

current=$( mpc "$@" current )
test -n "$current" || exit 0

#current=$( \
#  echo "$current" | \
#  sed -e 's/op\. \?\([0-9][0-9]*\)/Opus \1/ig' \
#      -e 's/no\. \?\([0-9][0-9]*\)/Number \1/ig;s/-//g' \
#)

current=$( \
  echo "$current" | \
  ruby -rromanic -p \
       -e '$_.gsub!(/op\.\s?(\d)+/i, "Opus \\1")' \
       -e '$_.gsub!(/no\.\s?(\d)+/i, "Number \\1")' \
       -e '$_.gsub!(/\b[ivxlc]+\b/i) { |n| n.from_roman || n }' \
)

echo "$current" | \
  espeak -s 140 -v en --stdout | \
  aplay -q -D"$device" -

exit 0