# - tar
# - man
# - optional: bat for code syntax highlighting
-# - optional: kitty terminal or catimg for images
+# - optional: ueberzug, kitty terminal, viu or catimg for images.
# - optional: scope.sh file viewer from ranger.
# To use:
# 1. drop scope.sh executable in $PATH
USE_SCOPE="${USE_SCOPE:-0}"
USE_PISTOL="${USE_PISTOL:-0}"
PAGER="${PAGER:-less -R}"
+TMPDIR="${TMPDIR:-/tmp}"
[ "$PAGER" = "most" ] && PAGER="less -R"
if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
fifo_pager ls --color=always
fi
elif [ "$encoding" = "binary" ]; then
- if [ "${mimetype%%/*}" = "image" ] ; then
- if [ "$TERMINAL" = "kitty" ]; then
- # Kitty terminal users can use the native image preview method.
- kitty +kitten icat --silent --transfer-mode=stream --stdin=no \
- "$1" &
- elif exists catimg; then
- catimg "$1"
- elif exists viu; then
- viu -t "$1"
- else
- fifo_pager print_bin_info "$1"
- fi
- elif [ "$mimetype" = "application/zip" ] ; then
+ if [ "${mimetype%%/*}" = "image" ]; then
+ image_preview "$cols" "$lines" "$1"
+ elif [ "$mimetype" = "application/zip" ]; then
fifo_pager unzip -l "$1"
- elif [ "$ext" = "gz" ] || [ "$ext" = "bz2" ] ; then
+ elif [ "$ext" = "gz" ] || [ "$ext" = "bz2" ]; then
fifo_pager tar -tvf "$1"
else
fifo_pager print_bin_info "$1"
fi
- elif [ "$mimetype" = "text/troff" ] ; then
+ elif [ "$mimetype" = "text/troff" ]; then
fifo_pager man -Pcat -l "$1"
else
if exists bat; then
fi
}
-if [ "$PREVIEW_MODE" ] ; then
- if [ ! -r "$NNN_FIFO" ] ; then
- echo "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')" >&2
- read -r
- exit 1
+image_preview() {
+ if [ "$TERMINAL" = "kitty" ]; then
+ # Kitty terminal users can use the native image preview method.
+ kitty +kitten icat --silent --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no \
+ "$3"
+ elif exists ueberzug; then
+ ueberzug_layer "$1" "$2" "$3"
+ elif exists catimg; then
+ catimg "$3" &
+ gifpid="$!"
+ elif exists viu; then
+ viu -t "$3" &
+ gifpid="$!"
+ else
+ fifo_pager print_bin_info "$1"
fi
+}
- preview_file "$1"
+ueberzug_layer() {
+ printf '{"action": "add", "identifier": "nnn_ueberzug", "x": 0, "y": 0, "width": "%s", "height": "%s", "path": "%s"}\n' "$1" "$2" "$3" > "$FIFO_UEBERZUG"
+}
+
+ueberzug_remove() {
+ printf '{"action": "remove", "identifier": "nnn_ueberzug"}\n' > "$FIFO_UEBERZUG"
+}
+ueberzug_refresh() {
+ clear
+ pkill -P "$$"
+ pkill -f -n preview-tui
+ echo > "$NNN_FIFO"
+ tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
+ preview_fifo &
+ wait
+}
+[ "$TERMINAL" != "kitty" ] && [ "$PREVIEW_MODE" ] && exists ueberzug && trap 'ueberzug_refresh' WINCH
+
+preview_fifo() {
# use cat instead of 'exec <' to avoid issues with dash shell
# shellcheck disable=SC2002
cat "$NNN_FIFO" |\
- while read -r selection ; do
+ while read -r selection; do
+ [ "$gifpid" -ne 0 ] && kill "$gifpid"
+ [ "$TERMINAL" != "kitty" ] && exists ueberzug && ueberzug_remove
preview_file "$selection"
done
+ [ "$TERMINAL" != "kitty" ] && exists ueberzug && rm "$FIFO_UEBERZUG"
+}
+
+if [ "$PREVIEW_MODE" ]; then
+ if [ ! -r "$NNN_FIFO" ]; then
+ echo "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')" >&2
+ read -r
+ exit 1
+ fi
+
+ if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then
+ FIFO_UEBERZUG="$TMPDIR/nnn-ueberzug-fifo.$$"
+ mkfifo "$FIFO_UEBERZUG"
+ tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
+ fi
+
+ preview_file "$1"
+ preview_fifo &
+ wait
# Restoring the previous layout for kitty users. This will only work for
# kitty >= 0.18.0.
# - man
# - optional: atool for additional archive preview
# - optional: bat for code syntax highlighting
-# - optional: kitty terminal, catimg, viu, or ueberzug for images
+# - optional: ueberzug, kitty terminal, viu or catimg for images.
+# - optional: convert(ImageMagick) for playing gif preview
+# - optional: ffmpegthumbnailer for video thumbnails (https://github.com/dirkvdb/ffmpegthumbnailer).
+# - optional: ffmpeg for audio thumbnails
+# - optional: libreoffce for opendocument/officedocument preview
+# - optional: pdftoppm(poppler) for pdf thumbnails
+# - optional: gnome-epub-thumbnailer for epub thumbnails (https://gitlab.gnome.org/GNOME/gnome-epub-thumbnailer)
+# - optional: fontpreview for font preview (https://github.com/sdushantha/fontpreview)
# - optional: scope.sh file viewer from ranger.
# To use:
# 1. drop scope.sh executable in $PATH
# To use:
# 1. install pistol
# 2. set/export $USE_PISTOL as 1
-# - optional: ffmpegthumbnailer for video thumbnails (https://github.com/dirkvdb/ffmpegthumbnailer).
-# To use:
-# 1. install ffmpegthumbnailer
-# 2. set/export USE_VIDEOPREVIEW as 1
-# - optional: convert(ImageMagick) for playing gif preview
-# To use:
-# 1. install ImageMagick
-# 2. set/export USE_GIFPREVIEW as 1
-# 3. set/export LOOP_GIF as 1 if you want to loop gif preview
-# - optional: ffmpeg for audio thumbnails
-# To use:
-# 1. install ffmpeg
-# 2. set/export USE_AUDIOPREVIEW as 1
-# - optional: pdftoppm(poppler) for pdf thumbnails
-# To use:
-# 1. install poppler
-# 2. set/export USE_PDFPREVIEW as 1
-# - optional: gnome-epub-thumbnailer for epub thumbnails (https://gitlab.gnome.org/GNOME/gnome-epub-thumbnailer)
-# To use:
-# 1. install gnome-epub-thumbnailer
-# 2. set/export USE_EPUBPREVIEW as 1
-# - optional: fontpreview for font preview (https://github.com/sdushantha/fontpreview)
-# To use:
-# 1. install fontpreview
-# 2. set/export USE_FONTPREVIEW as 1
-# - optional: libreoffce for opendocument/officedocument preview
-# To use:
-# 1. install libreoffice
-# 2. set/export USE_OFFICEPREVIEW as 1
#
# Usage:
# You need to set a NNN_FIFO path and a key for the plugin with NNN_PLUG,
TERMINAL="$TERMINAL" # same goes for the terminal
USE_SCOPE="${USE_SCOPE:-0}"
USE_PISTOL="${USE_PISTOL:-0}"
-USE_UEBERZUG="${USE_UEBERZUG:-0}"
-USE_IMAGEPREVIEW="${USE_IMAGEPREVIEW:-0}"
-USE_VIDEOPREVIEW="${USE_VIDEOPREVIEW:-0}"
-USE_AUDIOPREVIEW="${USE_AUDIOPREVIEW:-0}"
-USE_FONTPREVIEW="${USE_FONTPREVIEW:-0}"
-USE_EPUBPREVIEW="${USE_EPUBPREVIEW:-0}"
-USE_PDFPREVIEW="${USE_PDFPREVIEW:-0}"
-USE_OFFICEPREVIEW="${USE_OFFICEPREVIEW:-0}"
-USE_GIFPREVIEW="${USE_GIFPREVIEW:-0}"
-LOOP_GIFS="${LOOP_GIFS:-0}"
PAGER="${PAGER:-less -P?n -R}"
ARCHIVES="$(echo "$NNN_ARCHIVE" | sed 's/.*(\(.*\)).*/\1/;s/|/ /g')"
TMPDIR="${TMPDIR:-/tmp}"
fifo_pager ls --color=always
fi
elif [ "$encoding" = "binary" ]; then
- if [ "$USE_GIFPREVIEW" -ne 0 ] && [ "$ext" = "gif" ]; then
+ if [ "$ext" = "gif" ]; then
generate_preview "$cols" "$lines" "$1" "gif"
- elif [ "$USE_IMAGEPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "image" ]; then
- display_preview "$cols" "$lines" "$1"
- elif [ "$USE_AUDIOPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "audio" ]; then
+ elif [ "${mimetype%%/*}" = "image" ]; then
+ image_preview "$cols" "$lines" "$1"
+ elif [ "${mimetype%%/*}" = "audio" ] && exists ffmpeg; then
generate_preview "$cols" "$lines" "$1" "audio"
- elif [ "$USE_VIDEOPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "video" ]; then
+ elif [ "${mimetype%%/*}" = "video" ] && exists ffmpegthumbnailer; then
generate_preview "$cols" "$lines" "$1" "video"
- elif [ "$USE_PDFPREVIEW" -ne 0 ] && [ "$ext" = "pdf" ]; then
+ elif [ "$ext" = "pdf" ] && exists pdftoppm; then
generate_preview "$cols" "$lines" "$1" "pdf"
- elif [ "$USE_EPUBPREVIEW" -ne 0 ] && [ "$ext" = "epub" ]; then
+ elif [ "$ext" = "epub" ] && exists gnome-epub-thumbnailer; then
generate_preview "$cols" "$lines" "$1" "epub"
- elif [ "$USE_FONTPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "font" ]; then
+ elif [ "${mimetype%%/*}" = "font" ] && exists fontpreview; then
generate_preview "$cols" "$lines" "$1" "font"
- elif [ "${mimetype#*office}" != "$mimetype" ] || [ "${mimetype#*document}" != "$mimetype" ] && [ "$USE_OFFICEPREVIEW" -ne 0 ]; then
+ elif [ "${mimetype#*office}" != "$mimetype" ] || [ "${mimetype#*document}" != "$mimetype" ] && exists libreoffice; then
generate_preview "$cols" "$lines" "$1" "office"
elif [ "${ARCHIVES#*$ext}" != "$ARCHIVES" ] && exists atool; then
fifo_pager atool -l "$1"
audio) ffmpeg -i "$3" "$TMPDIR/$3.png" -y >/dev/null 2>&1 ;;
epub) gnome-epub-thumbnailer "$3" "$TMPDIR/$3.png" >/dev/null 2>&1 ;;
font) fontpreview -i "$3" -o "$TMPDIR/$3.png" >/dev/null 2>&1 ;;
- gif) if [ "$USE_UEBERZUG" -ne 0 ] || [ "$TERMINAL" = "kitty" ] && [ "$USE_GIFPREVIEW" -ne 0 ]; then
+ gif) if exists ueberzug || [ "$TERMINAL" = "kitty" ]; then
if [ ! -d "$TMPDIR/$3" ]; then
mkdir -p "$TMPDIR/$3"
convert -coalesce "$3" "$TMPDIR/$3/${3##*/}.png"
fi
while true; do
for frame in $(find "$TMPDIR/$3"/*.png | sort -V); do
- display_preview "$1" "$2" "$frame"
+ image_preview "$1" "$2" "$frame"
sleep 0.1
done
[ "$LOOP_GIFS" -eq 0 ] && return
gifpid="$!"
return
else
- display_preview "$1" "$2" "$3"
+ image_preview "$1" "$2" "$3"
return
fi ;;
office) libreoffice --convert-to png "$3" --outdir "$TMPDIR/${3%/*}" > /dev/null 2>&1
esac
kill "$pagerpid"
fi
- display_preview "$1" "$2" "$TMPDIR/$3.png"
+ image_preview "$1" "$2" "$TMPDIR/$3.png"
}
-display_preview() {
- if [ "$USE_UEBERZUG" -ne 0 ] && exists ueberzug; then
- ueberzug_layer "$1" "$2" "$3"
- elif [ "$TERMINAL" = "kitty" ]; then
+image_preview() {
+ if [ "$TERMINAL" = "kitty" ]; then
# Kitty terminal users can use the native image preview method.
kitty +kitten icat --silent --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no \
"$3"
+ elif exists ueberzug; then
+ ueberzug_layer "$1" "$2" "$3"
elif exists catimg; then
catimg "$3" &
gifpid="$!"
elif exists viu; then
viu -t "$3" &
gifpid="$!"
+ else
+ fifo_pager print_bin_info "$1"
fi
}
ueberzug_refresh() {
clear
pkill -P "$$"
- pkill -f -n preview-tui
+ pkill -f -n preview-tui-ext
echo > "$NNN_FIFO"
tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
preview_fifo &
wait
}
-[ "$USE_UEBERZUG" -ne 0 ] && trap 'ueberzug_refresh' WINCH
+[ "$TERMINAL" != "kitty" ] && [ "$PREVIEW_MODE" ] && exists ueberzug && trap 'ueberzug_refresh' WINCH
preview_fifo() {
# use cat instead of 'exec <' to avoid issues with dash shell
cat "$NNN_FIFO" |\
while read -r selection ; do
[ "$gifpid" -ne 0 ] && kill "$gifpid"
- [ "$USE_UEBERZUG" -ne 0 ] && ueberzug_remove
+ [ "$TERMINAL" != "kitty" ] && exists ueberzug && ueberzug_remove
preview_file "$selection"
done
- [ "$USE_UEBERZUG" -ne 0 ] && rm "$FIFO_UEBERZUG"
+ [ "$TERMINAL" != "kitty" ] && exists ueberzug && rm "$FIFO_UEBERZUG"
}
exit 1
fi
- if [ "$USE_UEBERZUG" -ne 0 ]; then
+ if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then
FIFO_UEBERZUG="$TMPDIR/nnn-ueberzug-fifo.$$"
mkfifo "$FIFO_UEBERZUG"
- fi
-
- preview_file "$1"
- if [ "$USE_UEBERZUG" -ne 0 ]; then
tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
fi
+ preview_file "$1"
preview_fifo &
wait