#!/bin/bash
#
# mklst 		A playlist-generator for mp3blaster
# 
# Version:		0.4-0	31-May-2004	kaethorn@stud.uni-stuttgart.de

echo "mklst - v0.4-0"

if [ -z "$1" ]
then
        echo "Usage: mklst [list-output] [directory]"
	exit 1
else
	if [ -z "$2" ]
	then
		echo "Usage: mklst [list-output] [directory]"
	else
		EXTENSION=$(echo "$1" | sed -e 's/.*\.//')
		FOLDER="$2"
		if [ "$EXTENSION" == "lst" ]
		then
			OUT="$1"
		else
			OUT=""$1".lst"
		fi
	fi
fi

TEMP=/tmp/mklist-temp

# clean beforehand
echo -n "  - clearing old files ..."
if [ -e "$OUT" ]
	then
	rm $OUT
fi
if [ -e "$TEMP" ]
	then
	rm $TEMP
fi
echo ".done"

# list all the dirs and format them to mp3blaster-list format; need to add a fake-line:

echo -n "  - building file-index ..."
find $FOLDER | egrep -i ".mp3|.ogg" | sort | sed -e 1i//fake/line >> $TEMP
echo ".done"

# playlists have to start like this...
echo -n "  - formatting file-index ."
echo "<GLOBAL PLAYMODE=\"allgroups\">" >> $OUT
echo -n "."

MAXLINE=$(wc -l < "$TEMP")
LN=1 # begin at line 1
STAT=0

echo -n ".."
while [ "$LN" -le "$MAXLINE" ]
do
	if [ "$STAT" -eq 0 ]
		then
		echo -n -e "\b-"
		let STAT="$STAT"+1
		else
		if [ "$STAT" -eq 1 ]
			then
			echo -n -e "\b\\"
			let STAT="$STAT"+1
			else
			if [ "$STAT" -eq 2 ]
				then
				echo -n -e "\b|"
				let STAT="$STAT"+1
				else
				echo -n -e "\b/"
				let STAT=0
			fi
		fi
	fi
		
	F1=$(cat $TEMP | sed -n -e "$LN"p | sed -e 's/\/.*\///g' | sed -e 's/\[/\\\[/g' | sed -e 's/\]/\\\]/g' | sed -e 's/\./\\\./g')
	FOLDER1=$(cat $TEMP | sed -n -e "$LN"p | sed -e 's/'"$F1"'//' | sed -e 's/\/$//' | sed -e 's/\/.*\///g')
	FILE1=$(cat $TEMP | sed -n -e "$LN"p) 
	let LN2="$LN"+1
	F2=$(cat $TEMP | sed -n -e "$LN2"p | sed -e 's/\/.*\///g' | sed -e 's/\[/\\\[/g' | sed -e 's/\]/\\\]/g' | sed -e 's/\./\\\./g')
	FOLDER2=$(cat $TEMP | sed -n -e "$LN2"p | sed -e 's/'"$F2"'//' | sed -e 's/\/$//' | sed -e 's/\/.*\///g')
	FILE2=$(cat $TEMP | sed -n -e "$LN2"p)
#debug:
#echo $FOLDER1
#echo $FOLDER2

	if [ "$FOLDER1" == "$FOLDER2" ]
		then
			echo $FILE1 | sed -e 's/./\t&/' >> $OUT
		else
			echo $FILE1 | sed -e 's/./\t&/' >> $OUT
			echo "</GROUP>" >> $OUT
			echo "<GROUP NAME=\""$FOLDER2"\">"  >> $OUT
	fi

LN=$(($LN+1))
done

echo -e "\b.done"

echo -n "  - cleaning file-index ..."
# remove the fakeline:
cat $OUT | sed -e '/fake\/line/d' > $OUT
# remove obsolete <\GROUP> in the 2nd line:
cat $OUT | sed -e 2d > $OUT
# remove last line:
cat $OUT | sed -e '$d' > $OUT
echo ".done"

echo -n "  - cleaning temp-file ..."
# purge the temp-file	
if [ -e "$TEMP" ]
	then
	rm $TEMP
fi
echo ".done"

exit 0