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https://github.com/jarun/nnn.git
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preview-tui(-ext) subshell job control (#891)
* subshell job control * remove unnecessary kill * Update docs * update PAGER and tree command * restore clear
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luukvbaal
GitHub
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@ -55,6 +55,7 @@ Plugins extend the capabilities of `nnn`. They are _executable_ scripts (or bina
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| [picker](picker) | Pick files and list one per line (to pipe) | sh | nnn |
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| [preview-tabbed](preview-tabbed) | Tabbed/xembed based file previewer | bash | _see in-file docs_ |
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| [preview-tui](preview-tui) | Tmux/kitty/xterm/`$TERMINAL` based file previewer | sh | _see in-file docs_ |
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| [preview-tui-ext](preview-tui-ext) | Meant to be an exhaustive version of [preview-tui](preview-tui) | sh | _see in-file docs_ |
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| [pskill](pskill) | Fuzzy list by name and kill process or zombie | sh | fzf, ps, sudo/doas |
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| [renamer](renamer) | Batch rename selection or files in dir | sh | [qmv](https://www.nongnu.org/renameutils/)/[vidir](https://joeyh.name/code/moreutils/) |
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| [ringtone](ringtone) | Create a variable bitrate mp3 ringtone from file | sh | date, ffmpeg |
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@ -3,7 +3,7 @@
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# Description: Terminal based file previewer
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#
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# Note: This plugin needs a "NNN_FIFO" to work. See man.
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# For a more extended version of this script, including ueberzug support, see preview-tui-ext.
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# For a more extended version of this script with additional optional dependencies, see preview-tui-ext.
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#
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# Dependencies:
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# - Supports 3 independent methods to preview with:
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@ -58,14 +58,19 @@
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# without extra dependencies.
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#
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# Shell: POSIX compliant
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero, Luuk van Baal
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SPLIT="$SPLIT" # you can set a permanent split here
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TERMINAL="$TERMINAL" # same goes for the terminal
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USE_SCOPE="${USE_SCOPE:-0}"
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USE_PISTOL="${USE_PISTOL:-0}"
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PAGER="${PAGER:-less -R}"
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PAGER="${PAGER:-less -P?n -R}"
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TMPDIR="${TMPDIR:-/tmp}"
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NUMPREVIEWTUI="$(($(find "$TMPDIR" -maxdepth 1 -name 'nnn-preview-tui-pagerpid*' 2>/dev/null | wc -l) + 1))"
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PAGERPID="$TMPDIR/nnn-preview-tui-pagerpid.$NUMPREVIEWTUI"
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GIFPID="$TMPDIR/nnn-preview-tui-gifpid.$NUMPREVIEWTUI"
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FIFO_UEBERZUG="$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NUMPREVIEWTUI"
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[ "$PAGER" = "most" ] && PAGER="less -R"
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if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
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@ -115,9 +120,7 @@ print_bin_info() {
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}
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preview_file () {
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kill %- %+ 2>/dev/null && wait %- %+ 2>/dev/null
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clear
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# Trying to use pistol if it's available.
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if [ "$USE_PISTOL" -ne 0 ] && exists pistol; then
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fifo_pager pistol "$1"
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@ -146,7 +149,7 @@ preview_file () {
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if [ -d "$1" ]; then
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cd "$1" || return
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if exists tree; then
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fifo_pager tree -L 3 -F
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fifo_pager tree -L 1 --dirsfirst -F -C
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elif exists exa; then
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fifo_pager exa -G --colour=always 2>/dev/null
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else
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@ -183,10 +186,10 @@ image_preview() {
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ueberzug_layer "$1" "$2" "$3"
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elif exists catimg; then
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catimg "$3" &
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gifpid="$!"
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echo "$!" > "$GIFPID"
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elif exists viu; then
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viu -t "$3" &
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gifpid="$!"
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echo "$!" > "$GIFPID"
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else
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fifo_pager print_bin_info "$1"
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fi
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@ -202,8 +205,8 @@ ueberzug_remove() {
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ueberzug_refresh() {
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clear
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pkill -P "$$"
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pkill -f -n preview-tui
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pkill -P "$$" >/dev/null 2>&1
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pkill -f -n preview-tui-ext >/dev/null 2>&1
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echo > "$NNN_FIFO"
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tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
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preview_fifo &
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@ -211,7 +214,7 @@ ueberzug_refresh() {
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}
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if [ "$TERMINAL" != "kitty" ] && [ "$PREVIEW_MODE" ] && exists ueberzug; then
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trap 'ueberzug_refresh' WINCH
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trap 'rm "$FIFO_UEBERZUG"' INT HUP EXIT
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trap 'rm "$FIFO_UEBERZUG" "$PAGERPID" "$GIFPID"' INT HUP EXIT
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fi
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preview_fifo() {
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@ -219,11 +222,13 @@ preview_fifo() {
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# shellcheck disable=SC2002
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cat "$NNN_FIFO" |\
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while read -r selection; do
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[ "$gifpid" -ne 0 ] && kill "$gifpid"
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kill "$(cat "$GIFPID" 2>/dev/null)" >/dev/null 2>&1
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kill "$(cat "$PAGERPID" 2>/dev/null)" >/dev/null 2>&1
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[ "$TERMINAL" != "kitty" ] && exists ueberzug && ueberzug_remove
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preview_file "$selection"
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done
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[ "$TERMINAL" != "kitty" ] && exists ueberzug && rm "$FIFO_UEBERZUG"
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rm "$PAGERPID" "$GIFPID" >/dev/null 2>&1
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}
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if [ "$PREVIEW_MODE" ]; then
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@ -65,7 +65,7 @@
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# without extra dependencies.
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#
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# Shell: POSIX compliant
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero, Luuk van Baal
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SPLIT="$SPLIT" # you can set a permanent split here
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TERMINAL="$TERMINAL" # same goes for the terminal
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@ -74,6 +74,10 @@ USE_PISTOL="${USE_PISTOL:-0}"
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PAGER="${PAGER:-less -P?n -R}"
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ARCHIVES="$(echo "$NNN_ARCHIVE" | sed 's/.*(\(.*\)).*/\1/;s/|/ /g')"
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TMPDIR="${TMPDIR:-/tmp}"
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NUMPREVIEWTUI="$(($(find "$TMPDIR" -maxdepth 1 -name 'nnn-preview-tui-pagerpid*' 2>/dev/null | wc -l) + 1))"
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PAGERPID="$TMPDIR/nnn-preview-tui-pagerpid.$NUMPREVIEWTUI"
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GIFPID="$TMPDIR/nnn-preview-tui-gifpid.$NUMPREVIEWTUI"
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FIFO_UEBERZUG="$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NUMPREVIEWTUI"
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[ "$PAGER" = "most" ] && PAGER="less -R"
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@ -104,7 +108,7 @@ fifo_pager() {
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mkfifo "$tmpfifopath" || return
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$PAGER < "$tmpfifopath" &
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pagerpid="$!"
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echo "$!" > "$PAGERPID"
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(
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exec > "$tmpfifopath"
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@ -125,9 +129,7 @@ print_bin_info() {
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}
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preview_file () {
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kill %- %+ 2>/dev/null && wait %- %+ 2>/dev/null
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clear
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# Trying to use pistol if it's available.
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if [ "$USE_PISTOL" -ne 0 ] && exists pistol; then
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fifo_pager pistol "$1"
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@ -202,7 +204,7 @@ preview_file () {
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generate_preview() {
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if [ ! -f "$TMPDIR/$3.png" ]; then
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fifo_pager print_bin_info "$3"
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[ "$4" != gif ] && fifo_pager print_bin_info "$3"
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mkdir -p "$TMPDIR/${3%/*}"
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case $4 in
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audio) ffmpeg -i "$3" "$TMPDIR/$3.png" -y >/dev/null 2>&1 ;;
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@ -220,7 +222,7 @@ generate_preview() {
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done
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[ "$LOOP_GIFS" -eq 0 ] && return
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done &
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gifpid="$!"
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echo "$!" > "$GIFPID"
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return
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else
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image_preview "$1" "$2" "$3"
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@ -232,12 +234,12 @@ generate_preview() {
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pdf) pdftoppm -png -f 1 -singlefile "$3" "$TMPDIR/$3" >/dev/null 2>&1 ;;
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video) ffmpegthumbnailer -i "$3" -o "$TMPDIR/$3.png" -s 0 -q 10 >/dev/null 2>&1 ;;
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esac
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kill "$pagerpid"
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fi
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image_preview "$1" "$2" "$TMPDIR/$3.png"
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}
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image_preview() {
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clear
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if [ "$TERMINAL" = "kitty" ]; then
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# Kitty terminal users can use the native image preview method.
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kitty +kitten icat --silent --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no \
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@ -246,10 +248,10 @@ image_preview() {
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ueberzug_layer "$1" "$2" "$3"
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elif exists catimg; then
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catimg "$3" &
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gifpid="$!"
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echo "$!" > "$GIFPID"
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elif exists viu; then
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viu -t "$3" &
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gifpid="$!"
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echo "$!" > "$GIFPID"
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else
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fifo_pager print_bin_info "$1"
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fi
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@ -265,8 +267,8 @@ ueberzug_remove() {
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ueberzug_refresh() {
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clear
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pkill -P "$$"
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pkill -f -n preview-tui-ext
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pkill -P "$$" >/dev/null 2>&1
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pkill -f -n preview-tui-ext >/dev/null 2>&1
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echo > "$NNN_FIFO"
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tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
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preview_fifo &
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@ -274,7 +276,7 @@ ueberzug_refresh() {
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}
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if [ "$TERMINAL" != "kitty" ] && [ "$PREVIEW_MODE" ] && exists ueberzug; then
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trap 'ueberzug_refresh' WINCH
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trap 'rm "$FIFO_UEBERZUG"' INT HUP EXIT
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trap 'rm "$FIFO_UEBERZUG" "$PAGERPID" "$GIFPID"' INT HUP EXIT
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fi
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preview_fifo() {
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@ -282,11 +284,13 @@ preview_fifo() {
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# shellcheck disable=SC2002
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cat "$NNN_FIFO" |\
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while read -r selection ; do
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[ "$gifpid" -ne 0 ] && kill "$gifpid"
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kill "$(cat "$GIFPID" 2>/dev/null)" >/dev/null 2>&1
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kill "$(cat "$PAGERPID" 2>/dev/null)" >/dev/null 2>&1
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[ "$TERMINAL" != "kitty" ] && exists ueberzug && ueberzug_remove
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preview_file "$selection"
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done
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[ "$TERMINAL" != "kitty" ] && exists ueberzug && rm "$FIFO_UEBERZUG"
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rm "$PAGERPID" "$GIFPID" >/dev/null 2>&1
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}
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@ -298,7 +302,6 @@ if [ "$PREVIEW_MODE" ]; then
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fi
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if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then
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FIFO_UEBERZUG="$TMPDIR/nnn-ueberzug-fifo.$$"
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mkfifo "$FIFO_UEBERZUG"
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tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
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fi
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