# - man
# - optional: bsdtar or atool for additional archive preview
# - optional: bat for code syntax highlighting
-# - optional: ueberzug, kitty terminal, wezterm terminal, viu, catimg or chafa for images
-# - optional: convert(ImageMagick) for playing gif preview (required for kitty image previews)
+# - optional: ueberzug, kitty terminal, wezterm terminal, img2sixel, viu, catimg or chafa for images
+# - optional: convert(ImageMagick) for playing gif preview (mandatory for kitty image previews)
+# - optional: mpv for gif and video
+# Also requires a terminal supporting the sixel (https://www.arewesixelyet.com/)
+# or kitty (https://sw.kovidgoyal.net/kitty/graphics-protocol) video_output backends.
+# Requires tmux compiled with `./configure --enable-sixel` if used.
# - optional: ffmpegthumbnailer for video thumbnails (https://github.com/dirkvdb/ffmpegthumbnailer)
# - optional: ffmpeg for audio thumbnails
# - optional: libreoffce for opendocument/officedocument preview
# Shell: Bash (for environment manipulation through arrays)
# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero, Luuk van Baal, @WanderLanz
-NNN_SPLIT=${NNN_SPLIT:-} # Set permanent split direction
-NNN_TERMINAL=${NNN_TERMINAL:-} # Set external terminal to be used
-NNN_SPLITSIZE=${NNN_SPLITSIZE:-50} # Set previewer split size percentage
-TMPDIR=${TMPDIR:-/tmp}
+# Configurable environment variables:
+NNN_SPLIT=${NNN_SPLIT:-} # permanent split direction
+NNN_TERMINAL=${NNN_TERMINAL:-} # external terminal to be used
+NNN_SPLITSIZE=${NNN_SPLITSIZE:-50} # previewer split size percentage
+TMPDIR=${TMPDIR:-/tmp} # location of temporary files
+ENVVARS=(
+ "NNN_SCOPE=${NNN_SCOPE:-0}" # use scope
+ "NNN_PISTOL=${NNN_PISTOL:-0}" # use pistol
+ "NNN_ICONLOOKUP=${NNN_ICONLOOKUP:-0}" # use .iconlookup
+ "NNN_PAGER=${NNN_PAGER:-less -P?n -R -C}" # pager options
+ "NNN_BATTHEME=${NNN_BATTHEME:-ansi}" # bat theme
+ "NNN_BATSTYLE=${NNN_BATSTYLE:-numbers}" # bat style
+ "NNN_PREVIEWWIDTH=${NNN_PREVIEWWIDTH:-1920}" # width of generated preview images
+ "NNN_PREVIEWHEIGHT=${NNN_PREVIEWHEIGHT:-1080}" # height of generated preview images
+ "NNN_PREVIEWDIR=${NNN_PREVIEWDIR:-$TMPDIR/nnn/previews}" # location of generated preview images
+ "NNN_PREVIEWIMGPROG=${NNN_PREVIEWIMGPROG:-}" # program used to preview images
+ "NNN_PREVIEWVIDEO=${NNN_PREVIEWVIDEO:-}" # mpv backend used to preview video
+)
+# Non-configurable environment variables
NNN_PARENT=${NNN_FIFO#*.}
[ "$NNN_PARENT" -eq "$NNN_PARENT" ] 2>/dev/null || NNN_PARENT="" # Make empty if non-numeric
-ENVVARS=(
+ENVVARS+=(
"PWD=$PWD"
"PATH=$PATH"
"NNN_FIFO=$NNN_FIFO"
- "NNN_SCOPE=${NNN_SCOPE:-0}"
- "NNN_PISTOL=${NNN_PISTOL:-0}"
- "NNN_ICONLOOKUP=${NNN_ICONLOOKUP:-0}"
- "NNN_PAGER=${NNN_PAGER:-less -P?n -R -C}"
- "NNN_BATTHEME=${NNN_BATTHEME:-ansi}"
- "NNN_BATSTYLE=${NNN_BATSTYLE:-numbers}"
- "NNN_PREVIEWWIDTH=${NNN_PREVIEWWIDTH:-1920}"
- "NNN_PREVIEWHEIGHT=${NNN_PREVIEWHEIGHT:-1080}"
- "NNN_PREVIEWDIR=${NNN_PREVIEWDIR:-$TMPDIR/nnn/previews}"
- "NNN_PREVIEWIMGPROG=${NNN_PREVIEWIMGPROG:-}"
"FIFOPID=$TMPDIR/nnn-preview-tui-fifopid.$NNN_PARENT"
"FIFOPATH=$TMPDIR/nnn-preview-tui-fifo.$NNN_PARENT"
"PREVIEWPID=$TMPDIR/nnn-preview-tui-previewpid.$NNN_PARENT"
start_preview() {
if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
NNN_TERMINAL=tmux
+ exists mpv && tmux display -p '#{client_termfeatures}' | grep -q 'sixel' && ENVVARS+=("NNN_PREVIEWVIDEO=sixel")
elif [ -n "$KITTY_LISTEN_ON" ]; then
NNN_TERMINAL=kitty
+ exists mpv && ENVVARS+=("NNN_PREVIEWVIDEO=kitty")
elif [ -n "$WEZTERM_PANE" ]; then
NNN_TERMINAL=wezterm
+ exists mpv && ENVVARS+=("NNN_PREVIEWVIDEO=kitty")
elif [ -z "$NNN_TERMINAL" ] && [ "$TERM_PROGRAM" = "iTerm.app" ]; then
NNN_TERMINAL=iterm
+ exists mpv && ENVVARS+=("NNN_PREVIEWVIDEO=sixel")
elif [ -n "$WT_SESSION" ]; then
NNN_TERMINAL=winterm
else
ENVVARS+=("NNN_TERMINAL=$NNN_TERMINAL" "NNN_SPLIT=$NNN_SPLIT" "QLPATH=$2" "PREVIEW_MODE=1")
case "$NNN_TERMINAL" in
- iterm|winterm) # need run in separate shell command: escape
+ iterm|winterm) # has to run in separate shell command: escape
ENVVARS=("${ENVVARS[@]/#/\\\"}")
ENVVARS=("${ENVVARS[@]/%/\\\"}")
command="$SHELL -c 'env ${ENVVARS[*]} \\\"$0\\\" \\\"$1\\\"'" ;;
tmux) # tmux splits are inverted
ENVVARS=("${ENVVARS[@]/#/-e}")
if [ "$NNN_SPLIT" = "v" ]; then split="h"; else split="v"; fi
- tmux split-window "${ENVVARS[@]}" -d"$split" -p"$NNN_SPLITSIZE" "$0" "$1" ;;
+ tmux split-window -l"$NNN_SPLITSIZE"% "${ENVVARS[@]}" -d"$split" -p"$NNN_SPLITSIZE" "$0" "$1" ;;
kitty) # Setting the layout for the new window. It will be restored after the script ends.
ENVVARS=("${ENVVARS[@]/#/--env=}")
kitty @ goto-layout splits
generate_preview() {
if [ -n "$QLPATH" ] && stat "$3"; then
f="$(wslpath -w "$3")" && "$QLPATH" "$f" &
+ elif [ -n "$NNN_PREVIEWVIDEO" ] && [[ "$4" == +(gif|video) ]]; then
+ [ "$4" = "video" ] && args=(--start=10% --length=4) || args=()
+ video_preview "$1" "$2" "$3" "${args[@]}" && return
elif [ ! -f "$NNN_PREVIEWDIR/$3.jpg" ] || [ -n "$(find -L "$3" -newer "$NNN_PREVIEWDIR/$3.jpg")" ]; then
mkdir -p "$NNN_PREVIEWDIR/${3%/*}"
case $4 in
done &
printf "%s" "$!" > "$PREVIEWPID"
return
+ elif [ -n "$NNN_PREVIEWVIDEO" ]; then
+ video_preview "$1" "$2" "$3" && return
else
- image_preview "$1" "$2" "$3"
- return
+ image_preview "$1" "$2" "$3" && return
fi ;;
image) if exists convert; then
convert "$3" -flatten -resize "$NNN_PREVIEWWIDTH"x"$NNN_PREVIEWHEIGHT"\> "$NNN_PREVIEWDIR/$3.jpg"
mv "$NNN_PREVIEWDIR/${3%/*}/$filename.jpg" "$NNN_PREVIEWDIR/$3.jpg" ;;
pdf) pdftoppm -jpeg -f 1 -singlefile "$3" "$NNN_PREVIEWDIR/$3" ;;
djvu) ddjvu -format=ppm -page=1 "$3" "$NNN_PREVIEWDIR/$3.jpg" ;;
- video) ffmpegthumbnailer -m -s0 -i "$3" -o "$NNN_PREVIEWDIR/$3.jpg" || rm "$NNN_PREVIEWDIR/$3.jpg" ;;
+ video) video_preview "$1" "$2" "$3" && return ;;
esac
fi
if [ -f "$NNN_PREVIEWDIR/$3.jpg" ]; then
image_preview() {
clear
exec >/dev/tty
- if [ "$NNN_TERMINAL" = "kitty" ] && [ -z "$NNN_PREVIEWIMGPROG" ]; then
+ if [ "$NNN_TERMINAL" = "kitty" ] && [[ "$NNN_PREVIEWIMGPROG" == +(|icat) ]]; then
kitty +kitten icat --silent --scale-up --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no "$3" &
- elif [ "$NNN_TERMINAL" = "wezterm" ] && [ -z "$NNN_PREVIEWIMGPROG" ]; then
+ elif [ "$NNN_TERMINAL" = "wezterm" ] && [[ "$NNN_PREVIEWIMGPROG" == +(|imgcat) ]]; then
wezterm imgcat "$3" &
- elif exists ueberzug && { [ -z "$NNN_PREVIEWIMGPROG" ] || [ "$NNN_PREVIEWIMGPROG" = "ueberzug" ] ;}; then
+ elif exists ueberzug && [[ "$NNN_PREVIEWIMGPROG" == +(|ueberzug) ]]; then
ueberzug_layer "$1" "$2" "$3" && return
- elif exists catimg && { [ -z "$NNN_PREVIEWIMGPROG" ] || [ "$NNN_PREVIEWIMGPROG" = "catimg" ] ;}; then
+ elif exists catimg && [[ "$NNN_PREVIEWIMGPROG" == +(|catimg) ]]; then
catimg "$3" &
- elif exists viu && { [ -z "$NNN_PREVIEWIMGPROG" ] || [ "$NNN_PREVIEWIMGPROG" = "viu" ] ;}; then
+ elif exists viu && [[ "$NNN_PREVIEWIMGPROG" == +(|viu) ]]; then
viu -t "$3" &
- elif exists chafa && { [ -z "$NNN_PREVIEWIMGPROG" ] || [ "$NNN_PREVIEWIMGPROG" = "chafa" ] ;}; then
+ elif exists chafa && [[ "$NNN_PREVIEWIMGPROG" == +(|chafa) ]]; then
chafa "$3" &
+ elif exists img2sixel && [[ "$NNN_PREVIEWIMGPROG" == +(|img2sixel) ]]; then
+ img2sixel -g "$3" &
else
fifo_pager print_bin_info "$3" && return
fi
printf "%s" "$!" > "$PREVIEWPID"
}
+video_preview() {
+ clear
+ exec >/dev/tty
+ if [ -n "$NNN_PREVIEWVIDEO" ]; then
+ mpv --no-config --really-quiet --vo="$NNN_PREVIEWVIDEO" --profile=sw-fast --loop-file --no-audio "$4" "$3" &
+ else
+ ffmpegthumbnailer -m -s0 -i "$3" -o "$NNN_PREVIEWDIR/$3.jpg" || rm "$NNN_PREVIEWDIR/$3.jpg" &
+ fi
+ printf "%s" "$!" > "$PREVIEWPID"
+}
+
ueberzug_layer() {
[ -f "$POSOFFSET" ] && read -r x y < "$POSOFFSET"
printf '{"action": "add", "identifier": "nnn_ueberzug", "x": %d, "y": %d, "width": "%d", "height": "%d", "scaler": "fit_contain", "path": "%s"}\n'\
}
if [ "$PREVIEW_MODE" -eq 1 ] 2>/dev/null; then
- if [ "$NNN_TERMINAL" != "kitty" ] && exists ueberzug; then
+ if exists ueberzug && [ "$NNN_TERMINAL" != "kitty" ] && [[ "$NNN_PREVIEWIMGPROG" == +(|ueberzug) ]]; then
mkfifo "$FIFO_UEBERZUG"
tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
fi