Finalize the code. Still needs final testing.

rename_music_files.sh

@@ -0,0 +1,123 @@
+#!/bin/bash
+# 2024-06-07 C.Greenwood
+# Rename all files in a music library based on metadata.
+# Uses the format "[Track]. [Title].mp3"
+
+## Variables ##
+
+PROG="`basename $0`"
+#DIR="`dirname $0`"
+DIR="`pwd`"
+EXT=".mp3"
+
+## Functions ##
+
+function usage {
+	cat <<- EOF
+		Usage:
+		  $PROG [-h] [-u]
+
+		Parameters:
+		  -h : Help, display the usage and exit succesfully.
+
+		Place this file at the root of your music destined for a flash drive and run it without any parameters.
+		It will dive through all folders and convert your MP3's to have the Track# and Title in the filename.
+
+		This tool has a pre-requisite you should make sure you have installed:
+		  - exiftool
+
+		Thanks for using $PROG!
+	EOF
+	exit $1
+}
+
+function error {
+	num_chars=$(( 7 + ${#1} ))
+	echo ""
+	printf '*%.0s' $(seq 1 $num_chars)
+	echo -e "\nERROR: $1"
+	printf '*%.0s'  $(seq 1 $num_chars)
+	echo -e "\n"
+	usage $2
+}
+
+## Validations ##
+
+# Check for parameters.
+while getopts ":h" opt; do
+	case "$opt" in
+		h) usage 0
+		;;
+		*) error "Operator $OPTARG not recognized." 6
+		;;
+	esac
+done
+
+# Ensure critical tools are available.
+if [[ ! `which exiftool` ]]; then
+	error "exiftool not found" 2
+fi
+
+## Main ##
+
+# Loop through all files in and lower than the current directory.
+time find $DIR -name "*${EXT}" | sort | while read file; do
+
+	echo -e "\n$file"
+
+	# Retrieve and clean the Track#
+	track=""
+	# Get raw value
+	track="`exiftool -Track "$file"`"
+	# Filter the header
+	track="${track//Track   /}"
+	track="${track//   : /}"
+	# Remove disk designations
+	track="${track%%/*}"
+	# Remove any whitespace before/after
+	track="`echo $track`"
+	# Add a leading 0 to single digits.
+	[[ ${#track} == 1 ]] && track="0$track"
+	echo "Track=$track"
+
+	# Retrieve and clean the Title
+	title=""
+	title="`exiftool -Title "$file"`"
+	title="${title//Title   /}"
+	title="${title//   : /}"
+	title="${title//[^[:alnum:][:space:].]/}"
+	title="`echo $title`"
+	while [[ "$title" == *"  "* ]]; do
+		title="${title//  / }"
+	done
+	echo "Title=$title"
+
+	# Create the new file with the correct filename.
+	new_file="`dirname "$file"`/$track. $title$EXT"
+	if [[ "$file" == "$new_file" ]]; then
+		echo "SKIP: Filename already correct! :)"
+		continue
+	fi
+
+	if [[ ! -z "$track" && ! -z "$title" ]]; then
+		echo "Creating '`basename "$new_file"`'."
+		mv -v "$file" "$new_file"
+	elif [[ -z "$track" && ! -z "$title" ]]; then
+		echo "No Track# found, leaving Title alone."
+		continue
+	else
+		echo "File does not have Track or Title metadata."
+		continue
+	fi
+
+	# Confirm the new file exists and remove the old file if so
+	if [[ -e "$new_file" ]]; then
+		echo "Success!"
+	else
+		error "$new_file was not created successfully." 5
+	fi
+done
+
+echo -e "\nProcess has completed. Enjoy having your songs named correctly!"
+
+exit 0