take a .cue file and output a CSV showing timestamp and chapter title. See <https://talk.automators.fm/t/extract-chapters-from-mp3/6797>

cue2csv.sh

#!/usr/bin/env zsh -f
# Purpose: take a .cue file and create a .csv showing timestamp first and chapter title second
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2020-03-06

NAME="$0:t:r"

if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
else
	PATH="$HOME/scripts:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin"
fi

if [[ "$#" != "1" ]]
then
	echo "$0 takes one argument, which must be a '.cue' file." >>/dev/stderr
	exit 2
fi

FILE="$@"

[[ ! -f "$FILE" ]] && echo "$NAME: '$FILE' is not a file." >>/dev/stderr && exit 2

[[ ! -e "$FILE" ]] && echo "$NAME: '$FILE' does not exist." >>/dev/stderr && exit 2

EXT="$FILE:l:e"

[[ "$EXT" != "cue" ]] && echo "$NAME: '$FILE' does not end in '.cue'. I hope you know what you're doing." >>/dev/stderr

COUNT='1'

while
do
		# make sure there is something to process
	RESULT=($(awk "/TRACK/{i++}i==$COUNT" "$FILE"))

		# if result is empty, we are either finished or we didn't find anything
	if [[ "$RESULT" == "" ]]
	then
		if [[ "$COUNT" -gt "1" ]]
		then

			TOTAL=$(($COUNT - 1))

				## if we found at least one, then we quit and assume we have done our job
				## Comment out the next line if you don't want to know when the script is done
			echo "	$NAME: exiting after processing $TOTAL tracks" >>/dev/stderr
			exit 0
		else
			echo "$NAME: did not find any TRACK info in '$FILE'. Is is a .cue file?" >>/dev/stderr
			exit 1
		fi
	fi

	TITLE=$(awk "/TRACK/{i++}i==$COUNT" "$FILE" | awk -F'"' '/ TITLE /{print $2}')

	TIME=$(awk "/TRACK/{i++}i==$COUNT" "$FILE" | awk -F' ' '/ INDEX /{print $NF}')

		## note that the TITLE is wrapped in " so hopefully if there is a comma in the title it will not break your CSV
		## you could also use a TAB instead of a comma to separate them. The '\t' below will be replaced with a TAB:
		##
		## echo "${TIME}\t${TITLE}"

	echo "${TIME} , \"${TITLE}\""

		# increment the counter so we can move to the next track in the cue file
	((COUNT++))

done


exit 0
#EOF

((COUNT++))