added luke's booksplit script

.local/bin/tools/tag

@@ -0,0 +1,59 @@
+#!/bin/sh
+
+err() { echo "Usage:
+	tag [OPTIONS] file
+Options:
+	-a: artist/author
+	-t: song/chapter title
+	-A: album/book title
+	-n: track/chapter number
+	-N: total number of tracks/chapters
+	-d: year of publication
+	-g: genre
+	-c: comment
+You will be prompted for title, artist, album and track if not given." && exit 1 ;}
+
+while getopts "a:t:A:n:N:d:g:c:f:" o; do case "${o}" in
+	a) artist="${OPTARG}" ;;
+	t) title="${OPTARG}" ;;
+	A) album="${OPTARG}" ;;
+	n) track="${OPTARG}" ;;
+	N) total="${OPTARG}" ;;
+	d) date="${OPTARG}" ;;
+	g) genre="${OPTARG}" ;;
+	c) comment="${OPTARG}" ;;
+	f) file="${OPTARG}" ;;
+	*) printf "Invalid option: -%s\\n" "$OPTARG" && err ;;
+esac done
+
+shift $((OPTIND - 1))
+
+file="$1"
+
+[ ! -f "$file" ] && echo "Provide file to tag." && err
+
+[ -z "$title" ] && echo "Enter a title." && read -r title
+[ -z "$artist" ] && echo "Enter an artist." && read -r artist
+[ -z "$album" ] && echo "Enter an album." && read -r album
+[ -z "$track" ] && echo "Enter a track number." && read -r track
+
+case "$file" in
+	*.ogg) echo "Title=$title
+Artist=$artist
+Album=$album
+Track=$track
+Total=$total
+Date=$date
+Genre=$genre
+Comment=$comment" | vorbiscomment -w "$file" ;;
+	*.opus) echo "Title=$title
+Artist=$artist
+Album=$album
+Track=$track
+Total=$total
+Date=$date
+Genre=$genre
+Comment=$comment" | opustags -i -S "$file" ;;
+	*.mp3) eyeD3 -Q --remove-all -a "$artist" -A "$album" -t "$title" -n "$track" -N "$total" -Y "$date" "$file" ;;
+	*) echo "File type not implemented yet." ;;
+esac