shufang.org/scripts/duration-length.sh

file="./scripts/duration-length.txt"
# duration-length.txt example
# https://github.com/shufangOrg/shufang.org/commit/bb08abed58cb35e530988eb44c2683c6327578e1
if [ -f "$file" ]
then
    for i in $(cat $file); do
	FIRSTLINE=$(head -n 1 "$i")
	if [ ${FIRSTLINE:0:3} == "---" ]
	then
	    mp3="https://"$(cat "$i" | grep "^mp3:" | awk -F' ' '{print $2}')
	    duration=$(ffprobe -i "$mp3" -show_entries format=duration -v quiet -of csv="p=0" -sexagesimal)
	    length=$(ffprobe -i "$mp3" -show_entries format=size -v quiet -of csv="p=0")
	    sed -i "s/^duration: .*/duration: \"$duration\"/g" "$i"
	    sed -i "s/^length: .*/length: $length/g" "$i"
	    cat "$i"
	fi
	if [ ${FIRSTLINE:0:3} == "+++" ]
	then
	    mp3="https://"$(cat "$i" | grep "^mp3 =" | awk -F' ' '{print $2}')
	    duration=$(ffprobe -i "$mp3" -show_entries format=duration -v quiet -of csv="p=0" -sexagesimal)
	    length=$(ffprobe -i "$mp3" -show_entries format=size -v quiet -of csv="p=0")
	    sed -i "s/^duration = .*/duration = \"$duration\"/g" "$i"
	    sed -i "s/^length = .*/length = $length/g" "$i"
	    cat "$i"
	fi
    done
fi