mirror of
https://github.com/jarun/nnn.git
synced 2024-11-24 11:51:27 +00:00
371 lines
13 KiB
Plaintext
371 lines
13 KiB
Plaintext
|
#!/usr/bin/env sh
|
||
|
|
|
||
|
|
# Description: Terminal based file previewer
|
||
|
|
#
|
||
|
|
# Note: This plugin needs a "NNN_FIFO" to work. See man.
|
||
|
|
#
|
||
|
|
# Dependencies:
|
||
|
|
# - Supports 3 independent methods to preview with:
|
||
|
|
# - tmux (>=3.0), or
|
||
|
|
# - kitty with allow_remote_control on, or
|
||
|
|
# - $TERMINAL set to a terminal (it's xterm by default).
|
||
|
|
# - less or $PAGER
|
||
|
|
# - tree or exa or ls
|
||
|
|
# - mediainfo or file
|
||
|
|
# - mktemp
|
||
|
|
# - unzip
|
||
|
|
# - tar
|
||
|
|
# - man
|
||
|
|
# - optional: atool for additional archive preview
|
||
|
|
# - optional: bat for code syntax highlighting
|
||
|
|
# - optional: kitty terminal, catimg, viu, or ueberzug for images
|
||
|
|
# - optional: scope.sh file viewer from ranger.
|
||
|
|
# To use:
|
||
|
|
# 1. drop scope.sh executable in $PATH
|
||
|
|
# 2. set/export $USE_SCOPE as 1
|
||
|
|
# - optional: pistol file viewer (https://github.com/doronbehar/pistol).
|
||
|
|
# 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,
|
||
|
|
# then start `nnn`:
|
||
|
|
#
|
||
|
|
# $ nnn -a
|
||
|
|
#
|
||
|
|
# or
|
||
|
|
#
|
||
|
|
# $ NNN_FIFO=/tmp/nnn.fifo nnn
|
||
|
|
#
|
||
|
|
# Then in `nnn`, launch the `preview-tui` plugin.
|
||
|
|
#
|
||
|
|
# If you provide the same NNN_FIFO to all nnn instances, there will be a
|
||
|
|
# single common preview window. If you provide different FIFO path (e.g.
|
||
|
|
# with -a), they will be independent.
|
||
|
|
#
|
||
|
|
# The previews will be shown in a tmux split. If that isn't possible, it
|
||
|
|
# will try to use a kitty terminal split. And as a final fallback, a
|
||
|
|
# different terminal window will be used ($TERMINAL).
|
||
|
|
#
|
||
|
|
# Tmux and kitty users can configure $SPLIT to either "h" or "v" to set a
|
||
|
|
# 'h'orizontal split or a 'v'ertical split (as in, the line that splits the
|
||
|
|
# windows will be horizontal or vertical).
|
||
|
|
#
|
||
|
|
# Kitty users need `allow_remote_control` set to `yes`. To customize the
|
||
|
|
# window split, `enabled_layouts` has to be set to `all` or `splits` (the
|
||
|
|
# former is the default value). This terminal is also able to show images
|
||
|
|
# without extra dependencies.
|
||
|
|
#
|
||
|
|
# Shell: POSIX compliant
|
||
|
|
# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero
|
||
|
|
|
||
|
|
SPLIT="$SPLIT" # you can set a permanent split here
|
||
|
|
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="${TMPDIR:-/tmp}"
|
||
|
|
|
||
|
|
[ "$PAGER" = "most" ] && PAGER="less -R"
|
||
|
|
|
||
|
|
if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
|
||
|
|
TERMINAL=tmux
|
||
|
|
elif [ -n "$KITTY_WINDOW_ID" ] && kitty @ ls >/dev/null 2>&1; then
|
||
|
|
TERMINAL=kitty
|
||
|
|
else
|
||
|
|
TERMINAL="${TERMINAL:-xterm}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -z "$SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ]; then
|
||
|
|
SPLIT='h'
|
||
|
|
elif [ "$SPLIT" != 'h' ]; then
|
||
|
|
SPLIT='v'
|
||
|
|
fi
|
||
|
|
|
||
|
|
exists() {
|
||
|
|
which "$1" >/dev/null 2>&1
|
||
|
|
}
|
||
|
|
|
||
|
|
fifo_pager() {
|
||
|
|
cmd="$1"
|
||
|
|
shift
|
||
|
|
|
||
|
|
# We use a FIFO to access $PAGER PID in jobs control
|
||
|
|
tmpfifopath="$TMPDIR/nnn-preview-tui-fifo.$$"
|
||
|
|
mkfifo "$tmpfifopath" || return
|
||
|
|
|
||
|
|
$PAGER < "$tmpfifopath" &
|
||
|
|
pagerpid="$!"
|
||
|
|
|
||
|
|
(
|
||
|
|
exec > "$tmpfifopath"
|
||
|
|
"$cmd" "$@" &
|
||
|
|
)
|
||
|
|
|
||
|
|
rm "$tmpfifopath"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Binary file: show file info inside the pager
|
||
|
|
print_bin_info() {
|
||
|
|
printf -- "-------- \033[1;31mBinary file\033[0m --------\n"
|
||
|
|
if exists mediainfo; then
|
||
|
|
mediainfo "$1" 2>/dev/null
|
||
|
|
else
|
||
|
|
file -b "$1"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
preview_file () {
|
||
|
|
kill %- %+ 2>/dev/null && wait %- %+ 2>/dev/null
|
||
|
|
clear
|
||
|
|
|
||
|
|
# Trying to use pistol if it's available.
|
||
|
|
if [ "$USE_PISTOL" -ne 0 ] && exists pistol; then
|
||
|
|
fifo_pager pistol "$1"
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Trying to use scope.sh if it's available.
|
||
|
|
if [ "$USE_SCOPE" -ne 0 ] && exists scope.sh; then
|
||
|
|
fifo_pager scope.sh "$1" "$cols" "$lines" "$(mktemp -d)" \
|
||
|
|
"True" 2>/dev/null
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Detecting the exact type of the file: the encoding, mime type, and
|
||
|
|
# extension in lowercase.
|
||
|
|
encoding="$(file -Lb --mime-encoding -- "$1")"
|
||
|
|
mimetype="$(file -Lb --mime-type -- "$1")"
|
||
|
|
ext="${1##*.}"
|
||
|
|
if [ -n "$ext" ]; then
|
||
|
|
ext="$(printf "%s" "${ext}" | tr '[:upper:]' '[:lower:]')"
|
||
|
|
fi
|
||
|
|
lines=$(($(tput lines)-1))
|
||
|
|
cols=$(tput cols)
|
||
|
|
|
||
|
|
# Otherwise, falling back to the defaults.
|
||
|
|
if [ -d "$1" ]; then
|
||
|
|
cd "$1" || return
|
||
|
|
if exists tree; then
|
||
|
|
fifo_pager tree -L 1 --dirsfirst -F -C
|
||
|
|
elif exists exa; then
|
||
|
|
fifo_pager exa -G --colour=always 2>/dev/null
|
||
|
|
else
|
||
|
|
fifo_pager ls --color=always
|
||
|
|
fi
|
||
|
|
elif [ "$encoding" = "binary" ]; then
|
||
|
|
if [ "$USE_GIFPREVIEW" -ne 0 ] && [ "$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
|
||
|
|
generate_preview "$cols" "$lines" "$1" "audio"
|
||
|
|
elif [ "$USE_VIDEOPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "video" ]; then
|
||
|
|
generate_preview "$cols" "$lines" "$1" "video"
|
||
|
|
elif [ "$USE_PDFPREVIEW" -ne 0 ] && [ "$ext" = "pdf" ]; then
|
||
|
|
generate_preview "$cols" "$lines" "$1" "pdf"
|
||
|
|
elif [ "$USE_EPUBPREVIEW" -ne 0 ] && [ "$ext" = "epub" ]; then
|
||
|
|
generate_preview "$cols" "$lines" "$1" "epub"
|
||
|
|
elif [ "$USE_FONTPREVIEW" -ne 0 ] && [ "${mimetype%%/*}" = "font" ]; then
|
||
|
|
generate_preview "$cols" "$lines" "$1" "font"
|
||
|
|
elif [ "${mimetype#*office}" != "$mimetype" ] || [ "${mimetype#*document}" != "$mimetype" ] && [ "$USE_OFFICEPREVIEW" -ne 0 ]; then
|
||
|
|
generate_preview "$cols" "$lines" "$1" "office"
|
||
|
|
elif [ "${ARCHIVES#*$ext}" != "$ARCHIVES" ] && exists atool; then
|
||
|
|
fifo_pager atool -l "$1"
|
||
|
|
elif [ "$mimetype" = "application/zip" ]; then
|
||
|
|
fifo_pager unzip -l "$1"
|
||
|
|
elif [ "$ext" = "gz" ] || [ "$ext" = "bz2" ]; then
|
||
|
|
fifo_pager tar -tvf "$1"
|
||
|
|
else
|
||
|
|
fifo_pager print_bin_info "$1"
|
||
|
|
fi
|
||
|
|
elif [ "$mimetype" = "text/troff" ]; then
|
||
|
|
fifo_pager man -Pcat -l "$1"
|
||
|
|
else
|
||
|
|
if exists bat; then
|
||
|
|
fifo_pager bat --terminal-width="$cols" --paging=never --decorations=always --color=always \
|
||
|
|
"$1" 2>/dev/null
|
||
|
|
else
|
||
|
|
$PAGER "$1" &
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
generate_preview() {
|
||
|
|
if [ ! -f "$TMPDIR/$3.png" ]; then
|
||
|
|
fifo_pager print_bin_info "$3"
|
||
|
|
mkdir -p "$TMPDIR/${3%/*}"
|
||
|
|
case $4 in
|
||
|
|
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
|
||
|
|
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"
|
||
|
|
sleep 0.1
|
||
|
|
done
|
||
|
|
[ "$LOOP_GIFS" -eq 0 ] && return
|
||
|
|
done &
|
||
|
|
gifpid="$!"
|
||
|
|
return
|
||
|
|
else
|
||
|
|
display_preview "$1" "$2" "$3"
|
||
|
|
return
|
||
|
|
fi ;;
|
||
|
|
office) libreoffice --convert-to png "$3" --outdir "$TMPDIR/${3%/*}" > /dev/null 2>&1
|
||
|
|
filename="$(echo "${3##*/}" | cut -d. -f1)"
|
||
|
|
mv "$TMPDIR/${3%/*}/$filename.png" "$TMPDIR/$3.png" ;;
|
||
|
|
pdf) pdftoppm -png -f 1 -singlefile "$3" "$TMPDIR/$3" >/dev/null 2>&1 ;;
|
||
|
|
video) ffmpegthumbnailer -i "$3" -o "$TMPDIR/$3.png" -s 0 -q 10 >/dev/null 2>&1 ;;
|
||
|
|
esac
|
||
|
|
kill "$pagerpid"
|
||
|
|
fi
|
||
|
|
display_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
|
||
|
|
# 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 catimg; then
|
||
|
|
catimg "$3" &
|
||
|
|
gifpid="$!"
|
||
|
|
elif exists viu; then
|
||
|
|
viu -t "$3" &
|
||
|
|
gifpid="$!"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
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
|
||
|
|
}
|
||
|
|
[ "$USE_UEBERZUG" -ne 0 ] && trap 'ueberzug_refresh' WINCH
|
||
|
|
|
||
|
|
preview_fifo() {
|
||
|
|
# use cat instead of 'exec <' to avoid issues with dash shell
|
||
|
|
# shellcheck disable=SC2002
|
||
|
|
cat "$NNN_FIFO" |\
|
||
|
|
while read -r selection ; do
|
||
|
|
[ "$gifpid" -ne 0 ] && kill "$gifpid"
|
||
|
|
[ "$USE_UEBERZUG" -ne 0 ] && ueberzug_remove
|
||
|
|
preview_file "$selection"
|
||
|
|
done
|
||
|
|
[ "$USE_UEBERZUG" -ne 0 ] && rm "$FIFO_UEBERZUG"
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if [ "$PREVIEW_MODE" ]; then
|
||
|
|
if [ ! -r "$NNN_FIFO" ]; then
|
||
|
|
echo "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')" >&2
|
||
|
|
read -r
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ "$USE_UEBERZUG" -ne 0 ]; then
|
||
|
|
FIFO_UEBERZUG="$TMPDIR/nnn-ueberzug-fifo.$$"
|
||
|
|
mkfifo "$FIFO_UEBERZUG"
|
||
|
|
fi
|
||
|
|
|
||
|
|
preview_file "$1"
|
||
|
|
if [ "$USE_UEBERZUG" -ne 0 ]; then
|
||
|
|
tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
|
||
|
|
fi
|
||
|
|
|
||
|
|
preview_fifo &
|
||
|
|
wait
|
||
|
|
|
||
|
|
# Restoring the previous layout for kitty users. This will only work for
|
||
|
|
# kitty >= 0.18.0.
|
||
|
|
if [ "$TERMINAL" = "kitty" ]; then
|
||
|
|
kitty @ last-used-layout --no-response >/dev/null 2>&1
|
||
|
|
fi
|
||
|
|
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ "$TERMINAL" = "tmux" ]; then
|
||
|
|
# tmux splits are inverted
|
||
|
|
if [ "$SPLIT" = "v" ]; then SPLIT="h"; else SPLIT="v"; fi
|
||
|
|
|
||
|
|
tmux split-window -e "NNN_FIFO=$NNN_FIFO" -e "PREVIEW_MODE=1" -d"$SPLIT" "$0" "$1"
|
||
|
|
elif [ "$TERMINAL" = "kitty" ]; then
|
||
|
|
# Setting the layout for the new window. It will be restored after the
|
||
|
|
# script ends.
|
||
|
|
kitty @ goto-layout splits >/dev/null
|
||
|
|
|
||
|
|
# Trying to use kitty's integrated window management as the split window.
|
||
|
|
# All environmental variables that will be used in the new window must
|
||
|
|
# be explicitly passed.
|
||
|
|
kitty @ launch --no-response --title "nnn preview" --keep-focus \
|
||
|
|
--cwd "$PWD" --env "PATH=$PATH" --env "NNN_FIFO=$NNN_FIFO" \
|
||
|
|
--env "PREVIEW_MODE=1" --env "PAGER=$PAGER" \
|
||
|
|
--env "USE_SCOPE=$USE_SCOPE" --env "SPLIT=$SPLIT" \
|
||
|
|
--env "USE_PISTOL=$USE_PISTOL" \
|
||
|
|
--location "${SPLIT}split" "$0" "$1" >/dev/null
|
||
|
|
else
|
||
|
|
PREVIEW_MODE=1 $TERMINAL -e "$0" "$1" &
|
||
|
|
fi
|