#!/usr/bin/env sh
# Description: Open hovered or current directory in image viewer.
-# Supported image viewers open in thumbnail mode when
-# the hovered entry is a directory.
+# Generates media thumbnails with optional dependencies.
#
# Dependencies:
# - imv (https://github.com/eXeC64/imv) or,
#
# Shell: POSIX compliant
# Author: Arun Prakash Jana, Luuk van Baal
-
-target="$(readlink -f "$1")"
+#
+# Consider setting NNN_PREVIEWDIR to $XDG_CACHE_HOME/nnn/previews
+# if you want to keep media thumbnails on disk between reboots.
+NNN_PREVIEWDIR="${NNN_PREVIEWDIR:-${TMPDIR:-/tmp}/nnn/previews}"
exit_prompt() {
[ -n "$1" ] && printf "%s\n" "$1"
exit
}
-nthumb_cleanup() {
- [ -n "$!" ] && while [ -e /proc/"$!" ]; do sleep 1; done
- if [ -f "$target" ]; then
- rm -r "$(dirname "$target")"/.nthumbs
- elif [ -d "$target" ]; then
- rm -r "$target"/.nthumbs
- fi &
-}
-
make_thumbs() {
- if [ -d "$target" ]; then
- [ "$1" -eq 4 ] && exit_prompt "$3 can only display a single image"
- cd "$target" || exit_prompt
- fi
- if mkdir .nthumbs >/dev/null; then
- thumbs=1
- else
- exit_prompt
- fi
- if [ "$1" -eq 4 ]; then
- mime="$(file -bL --mime-type -- "$2")"
+ mkdir -p "$NNN_PREVIEWDIR$dir" || return
+ if [ "$1" -eq 3 ]; then
+ [ -d "$target" ] && exit_prompt "$2 can only display a single image"
+ mime="$(file -bL --mime-type -- "$target")"
case "$mime" in
- audio/*) ffmpeg -i "$2" ".nthumbs/${2%%.*}.jpg" -y >/dev/null 2>&1
- ret=".nthumbs/${2%%.*}.jpg" ;;
- video/*) ffmpegthumbnailer -i "$2" -o .nthumbs/"${2%%.*}".jpg 2> /dev/null
- ret=".nthumbs/${2%%.*}.jpg" ;;
- *) ret="$2" ;;
+ audio/*) ffmpeg -i "$target" "$NNN_PREVIEWDIR$target.jpg" -y >/dev/null 2>&1
+ ret="$NNN_PREVIEWDIR/$target.jpg" ;;
+ video/*) ffmpegthumbnailer -i "$target" -o "$NNN_PREVIEWDIR$target.jpg" 2> /dev/null
+ ret="$NNN_PREVIEWDIR/$target.jpg" ;;
+ *) ret="$target" ;;
esac
fi
- for file in *; do
- case "$(file -bL --mime-type -- "$file")" in
- audio/*) [ "$1" -ne 0 ] && ffmpeg -i "$file" ".nthumbs/${file%%.*}.jpg" -y >/dev/null 2>&1 ;;
- video/*) [ "$1" -ne 1 ] && ffmpegthumbnailer -i "$file" -o .nthumbs/"${file%%.*}".jpg 2> /dev/null ;;
- esac
+ for file in "$dir"/*; do
+ if [ ! -f "$NNN_PREVIEWDIR$file.jpg" ]; then
+ case "$(file -bL --mime-type -- "$file")" in
+ audio/*) [ "$1" -ne 0 ] && ffmpeg -i "$file" "$NNN_PREVIEWDIR$file.jpg" -y >/dev/null 2>&1 ;;
+ video/*) [ "$1" -ne 1 ] && ffmpegthumbnailer -i "$file" -o "$NNN_PREVIEWDIR$file.jpg" 2> /dev/null ;;
+ esac
+ fi
done
+ for file in "$NNN_PREVIEWDIR$dir"/*; do
+ filename="$(basename "$file" .jpg)"
+ [ ! -e "$dir/$filename" ] && rm "$file" 2>/dev/null
+ done
+}
+
+listimages() {
+ find -L "$dir" "$NNN_PREVIEWDIR$dir" -maxdepth 1 -type f -print0 2>/dev/null | sort -z
}
view_files() {
- find . .nthumbs -maxdepth 1 -type f -print0 | xargs -0 "$@" --
+ [ -f "$target" ] && count="-n $(listimages | grep -a -m 1 -ZznF "$target" | cut -d: -f1)"
+ case "$1" in
+ sxiv) listimages | xargs -0 sxiv -a "${count:--t}" -- ;;
+ imv*) listimages | xargs -0 "$1" "${count:-}" -- ;;
+ esac
}
+target="$(readlink -f "$1")"
+[ -d "$target" ] && dir="$target" || dir="${target%/*}"
if uname | grep -q "Darwin"; then
[ -f "$1" ] && open "$1" >/dev/null 2>&1 &
elif type lsix >/dev/null 2>&1; then
make_thumbs ""
clear
lsix
- cd .nthumbs && lsix
- nthumb_cleanup
+ cd "$NNN_PREVIEWDIR$dir" && lsix
exit_prompt
elif type ucollage >/dev/null 2>&1; then
- make_thumbs 1
- if ! UCOLLAGE_EXPAND_DIRS=1 ucollage . .nthumbs; then
- nthumb_cleanup && exit_prompt
- fi
- nthumb_cleanup
- exit
+ type ffmpeg >/dev/null 2>&1 && make_thumbs 1
+ UCOLLAGE_EXPAND_DIRS=1 ucollage . "$NNN_PREVIEWDIR$dir" || exit_prompt
elif type sxiv >/dev/null 2>&1; then
- make_thumbs 0
- if [ -f "$target" ]; then
- view_files sxiv -a >/dev/null 2>&1 &
- elif [ -d "$target" ]; then
- view_files sxiv -aqt >/dev/null 2>&1 &
- fi
+ type ffmpegthumbnailer >/dev/null 2>&1 && make_thumbs 0
+ view_files sxiv >/dev/null 2>&1 &
elif type imv >/dev/null 2>&1; then
- make_thumbs 3
+ make_thumbs ""
view_files imv >/dev/null 2>&1 &
elif type imvr >/dev/null 2>&1; then
- make_thumbs 3
+ make_thumbs ""
view_files imvr >/dev/null 2>&1 &
elif type viu >/dev/null 2>&1; then
clear
- make_thumbs 4 "$1" viu
+ make_thumbs 3 viu
viu -n "$ret"
- nthumb_cleanup
exit_prompt
elif type catimg >/dev/null 2>&1; then
- make_thumbs 4 "$1" catimg
+ make_thumbs 3 catimg
catimg "$ret"
- nthumb_cleanup
exit_prompt
else
exit_prompt "Please install sxiv/imv/viu/catimg/lsix."
fi
-[ "$thumbs" -ne 0 ] && nthumb_cleanup &