Extracts fonts from mkv files

extractFonts.bash

DEBUG=0
while read line; do
	mkvinfo "$line" > currentmkvinfo.info
	currentFontName=""
	currentFontDigit=1
	while read info; do
		currentLine=`echo $info | sed 's/|//g' | sed 's/+//g'`
		currentLineText=`echo $currentLine | sed 's/[0-9]//g'`
		currentLineDigit=`echo $currentLine | sed 's/[a-z]//g' | sed 's/[A-Z]//g' | sed 's/://g'`
		if [ "$DEBUG" -gt "1" ]
		then
			echo DEBUG: Current line text: \ $currentLineText
			echo DEBUG: Current line digit: $currentLineDigit
			
		fi
		
		if [ "${currentLineText:0:13}" == "Track number:" ]
		then
			currentTracknumber=$currentLineDigit
			if [ "$DEBUG" -gt "0" ]
			then
				echo DEBUG: Looking whether $currentTracknumber is ASS-Subtitle...
			fi
		fi
		
		if [ "$currentLineText" == "Attachments" ]
		then
			lookForFonts=1
		fi
		
		if [ "${currentLineText:0:10}" == "File name:" ] && [ "$lookForFonts" == "1" ]
		then
			currentFontName=${currentLineText:11}
			if [ "$DEBUG" -gt "0" ]
			then
				echo DEBUG: Font detected: $currentFontName in file $line
				echo DEBUG: Extracting font and moving it to ~/.fonts/
			fi
			if [ -e "fonts/$currentFontName" ]
			then
				echo "Info: $currentFontName already exists, skipping"
			else
				mkvextract attachments "$line" $currentFontDigit:"fonts/$currentFontName"
			fi
			let currentFontDigit=$currentFontDigit+1
		fi
	done < currentmkvinfo.info		
	rm currentmkvinfo.info
	let count=$count+1
	#echo `tail -n1 substream.str` | sed 's/ /\n/g' >> substreamtmp.str
done < mkvlist.lst