Extended m3u generator

mkem3u.sh

#!/bin/bash
#################################################################
# mkem3u.sh - Extended m3u generator
# Usage:
#   ./mkm3u.sh
# Setup:
#   1. Install dependencies:
#        mp3info - http://ibiblio.org/mp3info/
#        id3tool - http://nekohako.xware.cx/id3tool/
#   2. Supply INPATHS. Paths which are relative to
#      this script will result in relative paths in the m3u
#   3. (Optional) Edit file extensions "mp3|flac|xm|s3m|mod|it"
#################################################################

INPATHS='
  path1
  path2
'

TMPFILE='all.m3u.tmp'
OUTFILE='all.m3u'
FILES=

echo -e "#EXTM3U\n" > $TMPFILE

for INPATH in $INPATHS; do
	echo "[$(date)] Finding mp3/flac/etc in $INPATH ..."
	FILES="$FILES"$'\n'"$(find $INPATH | grep -iE '\.(mp3|flac|xm|s3m|mod|it)$')"
done

echo "Processing files ..."
NFILES="$(echo "$FILES" | wc -l)"
CURFILENO=0

IFS=$'\n'; for FILE in $FILES; do
	CURFILENO=$((CURFILENO+1))
	echo -ne "$CURFILENO/$NFILES\r"

	if [[ "$FILE" != *mp3 ]]; then
		continue
	fi

	DURATION="$(mp3info -p %S "$FILE" 2>/dev/null)"
	ARTIST_TITLE="$(id3tool "$FILE" 2>/dev/null | head -3 | tail -2 | grep -vE '^(Filename|No ID3 Tag)' | sed -r 's/.*\t+(.*)/\1 @@@/g' | sed -r 's/ {2,}//g' | tr -d '\n' | sed -r 's/(.*) ?@@@(.*) ?@@@/\2 - \1/g')"

	echo "#EXTINF:$DURATION,$ARTIST_TITLE" >> $TMPFILE
	echo -e "$FILE\n" >> $TMPFILE
done

echo
echo "[$(date)] Saving to $OUTFILE"
mv $TMPFILE $OUTFILE