Ruffle Exporter - Create thumbnail from SWF files

ruffle-exporter

#!/bin/bash
# Ruffle-Exporter ver. 0.0.2
# Requires ''ruffle'', ''imagemagick'', ''zenity''

REDEBUG_LOG="/tmp/ruffle-export.dbg"
#REDEBUG_LOG="/dev/null"

#F1=$HOME/.thumbnails
#F2=$HOME/.cache/thumbnails
#SAVE_FOLDER=$F1
#[ -e $F2 ] && SAVE_FOLDER=$F2

ruffle_thumbnailer() {
	fname=$(dde_search_prefix "$1")
	fname=$(readlink -f "${fname}")
	echo "fname: ${fname}" >> $REDEBUG_LOG
	
	dirname=$(dirname "$fname")
	filename=$(basename "$fname")
	echo "dirname: ${dirname}" >> $REDEBUG_LOG
	echo "filename: ${filename}" >> $REDEBUG_LOG

	# https://askubuntu.com/questions/199110/how-can-i-instruct-nautilus-to-pre-generate-thumbnails
	# https://unix.stackexchange.com/questions/91325/how-to-compute-a-thumbnail-filename-from-the-shell
	# https://ubuntuforums.org/archive/index.php/t-666742.html
	# https://github.com/difference-engine/thumbnail-generator-ubuntu/blob/master/thumbgen/thumbgen.py
	# Generate a thumbnail at major distros
	# outname=`python -c "from gi.repository import Gio, GnomeDesktop, GdkPixbuf; import os.path; factory = GnomeDesktop.DesktopThumbnailFactory(); mtime = os.path.getmtime('${fname}'); f = Gio.file_new_for_path(str('${fname}')); uri = f.get_uri(); pixbuf = GdkPixbuf.Pixbuf.new(0, 0, 8, 1, 1); factory.save_thumbnail(pixbuf, uri, mtime); print(factory.lookup(uri, mtime))"`
	# outname=`python3 -c "from PyQt5.QtCore import QUrl; import hashlib; import os.path; fileUrl = QUrl.fromLocalFile('$fname').toString(QUrl.FullyEncoded); fileUrl = fileUrl.encode('utf-8'); uriHash = hashlib.md5(fileUrl).hexdigest(); print(os.path.join('/home/Eduardo/.cache/thumbnails/large','%s.png' % uriHash))"`
	# Possible way to create a thumbnail at Deepin without a dthumbnailprovider for DDE-File-Manager: https://github.com/linuxdeepin/deepin-riscv/blob/07b566d791e09187bed3664b4a9848c117ead653/dde-api-5.5.5/thumbnails/loader/loader.go

	#outname=$(get_recent_file "$SAVE_FOLDER/normal")
	#echo "outname: ${outname}" >> $REDEBUG_LOG

	outname="$dirname/${filename%.*}.png"

    	# no work if thumbnail already present
    	if [ ! -e "${outname}" ]; then

		echo "ruffle ${fname}" > $REDEBUG_LOG
		ruffle "$fname" &
		PID_RUFFLE=$!
		echo "PID_RUFFLE ${PID_RUFFLE}" >> $REDEBUG_LOG
		# Ruffle do not decode Japanese filenames into window title, use Ruffle PID instead
		#rufflewname="Ruffle - "$filename""
		while true; do
			#rufflewhandle=$(xdotool search --name "$rufflewname")
			rufflewhandle=$(xdotool search --pid $PID_RUFFLE)
			if expr "$rufflewhandle" : '-\?[0-9]\+$' >/dev/null
			then
				echo "rufflewhandle: ${rufflewhandle}" >> $REDEBUG_LOG
				xdotool windowminimize $rufflewhandle
				break
			fi
	
			if ! ps -p $PID_RUFFLE > /dev/null
			then
				echo "ruffle window was closed. exiting." >> $REDEBUG_LOG
				exit
			fi
		done
		sleep 1


        	#import -window "$rufflewname" -delay 200 -silent "$dirname/${filename%.*}.png"
	   	import -window "$rufflewhandle" -delay 200 -silent "${outname}"
	   	echo "import -window ${rufflewhandle} -delay 200 -silent '${outname}'" >> $REDEBUG_LOG

		#convert -thumbnail 256x256 "/tmp/${outname}" "${outname}" &>/dev/null
    		#echo "convert -thumbnail 256x256 '/tmp/${outname}' '${outname}'" >> $REDEBUG_LOG

		#sleep 1
		#killall ruffle
		kill -9 $PID_RUFFLE
	else
		echo "Ignoring '$fname'. Thumbnail '${outname}' already exists." >> $REDEBUG_LOG
	fi
}

# Remove search prefix when thumbnailing search file results from Deepin File Manager.
dde_search_prefix() {
	fname="$1"
	# If $fname starts with `search` keyword
	if [ "${fname:0:6}" = search ]; then
		echo "Contains Search Prefix" >> $REDEBUG_LOG
		# Before: search:?url=file:///home/eduardo/&keyword=*.swf#file:///home/eduardo/a%2001.swf
		# After: /home/eduardo/a%2001.swf
		# If it's not a search file result then this will not change the argument value.
		searchprefix="file://"
		fname="${fname##*$searchprefix}"

		# Decode $fname to UTF-8
		# Before: /home/eduardo/a%2001.swf
		# After: /home/eduardo/a 01.swf (note the space)
		fname=$(utfdecode "$fname")
	fi
	echo "$fname"
}

utfdecode() {
	echo "$1" | sed 's@+@ @g;s@%@\\x@g' | xargs -0 printf "%b"
}

# https://www.baeldung.com/linux/get-recent-file-in-directory
get_recent_file () {
    FILE=$(ls -Art1 "$1" | tail -n 1)
    echo $FILE
    exit
}

if [ $# -lt 2 ]; then
	# Single argument given
	ruffle_thumbnailer "$1"
else
	echo "Multiple arguments given" >> $REDEBUG_LOG
	echo "Arguments: $@"

	# sudo apt-get install parallel
	# parallel -j 3 -k "ruffle-exporter" {} ::: "$@"

	#for fname in "$@"; do
	#	ruffle_thumbnailer "$fname"
	#done

	(
	N=3
	(
	COUNTER=1
	for fname in "$@"; do
	   ((i=i%N)); ((i++==0)) && wait
           zenitypercentage="$(echo "100/$#*$COUNTER" | bc -l)"
           zenitypercentage="${zenitypercentage%.*}" # Convert float to integer
           if [[ -z "$zenitypercentage" ]]; then zenitypercentage=0; fi # If not a number, aka. is empty - can happen if percentage value is below than zero
           if [[ $zenitypercentage -ge 100 ]]; then zenitypercentage=99; fi
	   #zenitytitle="$(utfdecode $(basename "$fname"))\n"$COUNTER" of "$#" ("${zenitypercentage%.*}"%)"
	   zenitytitle="...$(utfdecode $(dde_search_prefix "${fname: -120}"))\n"$COUNTER" of "$#" ("$zenitypercentage"%)"
	   echo -e "$zenitytitle" >> $REDEBUG_LOG
	   echo "# $zenitytitle"
	   echo "$zenitypercentage"
	   if [[ $COUNTER -ge $# ]]; then
	   	ruffle_thumbnailer "$fname"
	   else
	   	ruffle_thumbnailer "$fname" &
	   fi
	   let COUNTER=COUNTER+1
	done
	# Zenity closes automatically when percentage reaches 100%, so we only set it as 100% when the last ruffle_thumbnailer call is finished.
	echo "# $zenitytitle"
	echo "100"
	)
	) |
	zenity --progress \
	  --title="ruffle-export" \
	  --percentage=0 --width=600 --auto-close &

	# get zenity process id
	PID_ZENITY=${!}

	# get firstly created child process id, which is running all tasks
	PID_CHILD=$(pgrep -o -P $$)

	# loop to check that progress dialog has not been cancelled
	# http://www.bernaerts-nicolas.fr/linux/331-linux-cancel-zenity-progress-dialog-right-way
	while [ "$PID_ZENITY" != ""  ]
	do
		# get PID of all running tasks
		PID_TASKS=$(pgrep -d ' ' -P ${PID_CHILD})

		# check if zenity PID is still there (dialog box still open)
		PID_ZENITY=$(ps h -o pid --pid ${PID_ZENITY} | xargs)

		# sleep for 2 second
		sleep 2
	done

	# if some running tasks are still there, kill them
	[ "${PID_TASKS}" != "" ] && kill -9 ${PID_TASKS}

fi