Converts a /var/mobile/Media/Purchases (from iPhone, iPad or iPod touch) directory to media files with artwork & tags

itunes_conv.sh

#!/bin/bash -e

### config ###
numbered=1
force_artwork="./-52743546503191174.jpeg"
##############

getxml () {
	grep -F -A1 "<key>$1<" -- "$file" | sed -rn 's/.*<(string|integer)>(.+)<.*/\2/p'
}

unescape () {
	sed -e 's|&amp;|\&|g' -e 's|&lt;|<|g' -e 's|&gt;|>|g'
}

die () {
	printf '%s\n' "$1" >&2
	exit 1
}

plistutil &>/dev/null || die "Install libplist-utils"
AtomicParsley &>/dev/null || die "Install atomicparsley"


[ -f StorePurchasesInfo.plist ] || die "Doesn't look like a 'Purchases' directory here..."

for file in *.plist; do
	plistutil -i "$file" -o "$file.xml"
	rm -- "$file"
done

for file in *.xml; do
	[ "`getxml kind`" == "song" ] || continue
	artist=`getxml artistName | unescape`
	title=`getxml itemName | unescape`
	albumArtist=`getxml playlistArtistName | unescape`
	albumName=`getxml playlistName | unescape`
	copyright=`getxml copyright`
	genre=`getxml genre`
	year=`getxml year`
	trackNum=`getxml trackNumber`
	trackTotal=`getxml trackCount`

	# goddamnit apple
	fs=`getxml "file-size"`
	mediaFile=`ls -l | sed -rn 's|^([^ ]+ ){4} *'$fs' +([^ ]+ +){3}([-0-9]+\.m4a)$|\3|p'`
	if [[ -z "$mediaFile" || `wc -l <<<"$mediaFile"` -ne 1 ]]; then
		printf 'error: ??? -> %s - %s\n' "$artist" "$title"
		continue
	fi
	artworkFile=$force_artwork

	out="$artist - $title.m4a"
	[ $numbered -eq 1 ] && out="$(printf '%02d' $trackNum). $out"
	tn=$trackNum
	[ -n "$trackTotal" ] && tn="$tn/$trackTotal"

	mv -- "$mediaFile" "$out"
	AtomicParsley "$out" -W \
		--artwork "$artworkFile" \
		--copyright "$copyright" \
		--artist "$artist" \
		--title "$title" \
		--albumArtist "$albumArtist" \
		--album "$albumName" \
		--genre "$genre" \
		--year "$year" \
		--tracknum "$tn" \
		&>/dev/null
	printf 'OK: "%s" -> %s - %s\n' "$mediaFile" "$artist" "$title"
	
	rm -- "$file" #"$artworkFile"
done

echo "Done."