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Unified preview-tui and preview-kitty scripts (#634)
* Unified preview-tui and preview-kitty * Remove preview-kitty * No need to set $TERMINAL * fix undeclared variable * Integrated support for scope.sh * Review fixes * allow_remote_control must be enabled on kitty * Documentation, kitty splits and images fallback * fix restoring kitty layout
This commit is contained in:
Mario
Arun Prakash Jana
parent
c5f0a25e7e
commit
a47d190654
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@ -3,8 +3,8 @@
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<p align="center"><img src="https://i.imgur.com/SpT0L2W.png" /></p>
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<p align="center"><i>read ebooks with plugin gutenread (Android)</i></p>
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<p align="center"><a href="https://asciinema.org/a/336443"><img src="https://asciinema.org/a/336443.png" width="734"/></a></p>
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<p align="center"><i>Live Previews asciicast</i></p>
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<p align="center"><a href="https://asciinema.org/a/336443"><img src="https://asciinema.org/a/336443.svg" width="734"/></a></p>
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<p align="center"><i>Live Previews</i></p>
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## Introduction
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@ -63,9 +63,8 @@ Plugins are installed to `${XDG_CONFIG_HOME:-$HOME/.config}/nnn/plugins`.
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| pdfread | Read a PDF or text file aloud | sh | pdftotext, mpv,<br>pico2wave |
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| pdfview | View PDF file in `$PAGER` | sh | pdftotext/<br>mupdf-tools |
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| picker | Pick files and list one per line (to pipe) | sh | nnn |
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| preview-kitty | File previewer in a kitty terminal pane | sh | [kitty](https://sw.kovidgoyal.net/kitty/), optional:<br>[exa](https://github.com/ogham/exa) [bat](https://github.com/sharkdp/bat) mediainfo |
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| preview-tabbed | `tabbed`/xembed based file previewer | bash | _see in-file docs_ |
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| preview-tui | Simple TUI file previewer (needs NNN_FIFO) | sh | tmux (>= 3.0)/xterm/<br>\$TERMINAL, file, tree |
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| preview-tui | Tmux/kitty/`$TERMINAL` based file previewer | sh | _see in-file docs_ |
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| pskill | Fuzzy list by name and kill process or zombie | sh | fzf, ps, sudo/doas |
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| 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 | Create a variable bitrate mp3 ringtone from file | sh | date, ffmpeg |
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@ -1,77 +0,0 @@
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#!/usr/bin/env sh
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# Description: File previewer for kitty term using NNN_FIFO
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#
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# Dependencies:
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# - kitty (https://sw.kovidgoyal.net/kitty/) with allow_remote_control on
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# - file
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# - exa (https://github.com/ogham/exa) (fallback: ls)
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# - bat (https://github.com/sharkdp/bat) (fallback: cat)
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# - mediainfo (fallback: file)
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#
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# Usage:
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# This plugin only works in kitty (https://sw.kovidgoyal.net/kitty/),
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# and with kitty's 'allow_remote_control' option turned on.
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# You need to set a NNN_FIFO path and set a key for the plugin,
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# then start `nnn`:
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#
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# $ NNN_FIFO=/tmp/nnn.fifo nnn
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#
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# Then in `nnn`, launch the `preview-kitty` plugin.
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#
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# If you provide the same NNN_FIFO to all nnn instances, there will be a
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# single common preview window. If you provide different FIFO path, they
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# will be independent.
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#
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# Shell: POSIX compliant
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# Authors: Léo Villeveygoux
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preview_file () {
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kill %% 2>/dev/null
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clear
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lines=$(($(tput lines)-1))
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cols=$(tput cols)
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mime="$(file -b --mime-type "$1")"
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encoding="$(file -b --mime-encoding "$1")"
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if [ -d "$1" ]; then
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# Print directory tree
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# shellcheck disable=SC2015
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cd "$1" && \
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(COLUMNS=$cols exa -G --colour=always 2>/dev/null ||\
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ls --color=alway) | head -n $lines &
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# remove second clause to preview SVG files (but this is slow)
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elif [ "${mime%%/*}" = "image" ] && [ "$encoding" = "binary" ] ; then
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kitty +kitten icat --silent --transfer-mode=stream --stdin=no "$1" &
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elif [ "$encoding" = "binary" ] ; then
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# Binary file: show file info
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printf -- "-------- \033[1;31mBinary file\033[0m --------\n"
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(mediainfo "$1" 2>/dev/null || file -b "$1") | head -n $((lines - 1)) &
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else
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# Text file: print colored file content
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(bat --terminal-width="$cols" --paging=never --decorations=always \
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--color=always "$1" 2>/dev/null || cat) | head -n $lines &
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fi
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}
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if [ "$PREVIEW_MODE" ] ; then
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if [ ! -r "$NNN_FIFO" ] ; then
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echo "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')" >&2
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read -r
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exit 1
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fi
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preview_file "$1"
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# use cat instead of 'exec <' to avoid issues with dash shell
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# shellcheck disable=SC2002
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cat "$NNN_FIFO" |\
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while read -r selection ; do
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preview_file "$selection"
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done
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exit 0
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fi
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kitty @ launch --no-response --title "nnn preview" --keep-focus \
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--cwd="$PWD" --env "NNN_FIFO=$NNN_FIFO" --env "PREVIEW_MODE=1" \
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"$0" "$1" > /dev/null
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@ -1,15 +1,29 @@
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#!/usr/bin/env sh
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# Description: Text based file previewer
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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.
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# Note: This plugin needs a "NNN_FIFO" to work. See man.
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#
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# Dependencies: tmux (>=3.0) or xterm or $TERMINAL, less or $PAGER,
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# file, stat, tree, man, tar, unzip, ...
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# ... add you own! (see examples in code)
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# Dependencies:
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# - Supports 3 independent methods to preview with:
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# - tmux (>=3.0), or
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# - kitty with allow_remote_control on, or
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# - $TERMINAL set to a terminal (it's xterm by default).
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# - less or $PAGER
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# - tree or exa or ls
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# - mediainfo or file
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# - unzip
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# - tar
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# - man
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# - optional: bat for code syntax highlighting
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# - optional: kitty terminal or catimg for images
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# - optional: scope.sh file viewer from ranger.
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# To use:
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# 1. drop scope.sh executable in $PATH
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# 2. set/export $USE_SCOPE as 1
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#
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# Usage:
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# You need to set a NNN_FIFO path and set a key for the plugin,
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# You need to set a NNN_FIFO path and a key for the plugin with NNN_PLUG,
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# then start `nnn`:
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#
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# $ nnn -a
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@ -24,15 +38,42 @@
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# single common preview window. I you provide different FIFO path (e.g.
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# with -a), they will be independent.
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#
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# Configure SPLIT to either "h" or "v" to set a 'h'orizontal split or a
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# 'v'ertical split
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# The previews will be shown in a tmux split. If that isn't possible, it
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# will try to use a kitty terminal split. And as a final fallback, a
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# different terminal window will be used ($TERMINAL).
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#
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# Tmux and kitty users can configure $SPLIT to either "h" or "v" to set a
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# 'h'orizontal split or a 'v'ertical split.
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#
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# Kitty users need `allow_remote_control` set to `yes`. To customize the
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# window split, `enabled_layouts` has to be set to `all` or `splits` (the
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# former is the default value). This terminal is also able to show images
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# without extra dependencies.
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#
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# Shell: POSIX compliant
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero
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TERMINAL="${TERMINAL:-xterm}"
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USE_SCOPE="${USE_SCOPE:-0}"
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PAGER="${PAGER:-less -R}"
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if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
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TERMINAL=tmux
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elif [ -n "$KITTY_WINDOW_ID" ] && kitty @ ls >/dev/null 2>&1; then
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TERMINAL=kitty
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else
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TERMINAL="${TERMINAL:-xterm}"
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fi
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if [ -z "$SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ] ; then
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SPLIT='v'
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elif [ "$SPLIT" != 'v' ] ; then
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SPLIT='h'
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fi
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exists() {
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command -v "$1" >/dev/null 2>&1
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}
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fifo_pager() {
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cmd="$1"
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shift
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@ -51,43 +92,76 @@ fifo_pager() {
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rm "$tmpfifopath"
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}
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# Binary file: show file info inside the pager
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print_bin_info() {
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printf -- "-------- \033[1;31mBinary file\033[0m --------\n"
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if exists mediainfo; then
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mediainfo "$1" 2>/dev/null
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else
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file -b "$1"
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fi
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}
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preview_file () {
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kill %- %+ 2>/dev/null && wait %- %+ 2>/dev/null
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clear
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# Detecting the exact type of the file: the encoding, mime type, and
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# extension in lowercase.
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encoding="$(file -Lb --mime-encoding -- "$1")"
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# Detect mime type
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mimetype="$(file -Lb --mime-type -- "$1")"
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# Detect file extention
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ext="${1##*.}"
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if [ -n "$ext" ]; then
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ext="$(printf "%s" "${ext}" | tr '[:upper:]' '[:lower:]')"
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fi
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lines=$(($(tput lines)-1))
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cols=$(tput cols)
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# Trying to use scope.sh if it's available.
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if [ "$USE_SCOPE" -ne 0 ] && exists scope.sh; then
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fifo_pager scope.sh "$1" "$cols" "$lines" "$(mktemp -d)" \
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"True" 2>/dev/null
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return
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fi
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# Otherwise, falling back to the defaults.
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if [ -d "$1" ]; then
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# Print directory tree
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cd "$1" || return
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if exists tree; then
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fifo_pager tree
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#elif [ "${mimetype%%/*}" = "image" ] ; then
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# catimg "$1"
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elif [ "$mimetype" = "text/troff" ] ; then
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fifo_pager man -Pcat -l "$1"
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elif exists exa; then
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fifo_pager exa -G --colour=always 2>/dev/null
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else
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fifo_pager ls --color=always
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fi
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elif [ "$encoding" = "binary" ]; then
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if [ "${mimetype%%/*}" = "image" ] ; then
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if [ "$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 --transfer-mode=stream --stdin=no \
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"$1" &
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elif exists catimg; then
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catimg "$1"
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else
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fifo_pager print_bin_info "$1"
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fi
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elif [ "$mimetype" = "application/zip" ] ; then
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fifo_pager unzip -l "$1"
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elif [ "$ext" = "gz" ] || [ "$ext" = "bz2" ] ; then
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fifo_pager tar -tvf "$1"
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elif [ "$encoding" = "binary" ] ; then
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# Binary file: just print filetype info
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echo "-------- binary file --------"
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file -b "$1"
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echo
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stat "$1"
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else
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# Text file:
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fifo_pager print_bin_info "$1"
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fi
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elif [ "$mimetype" = "text/troff" ] ; then
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fifo_pager man -Pcat -l "$1"
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else
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if exists bat; then
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fifo_pager bat --paging=never --decorations=always --color=always \
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"$1" 2>/dev/null
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else
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$PAGER "$1" &
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fi
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fi
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}
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if [ "$PREVIEW_MODE" ] ; then
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@ -99,21 +173,31 @@ if [ "$PREVIEW_MODE" ] ; then
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preview_file "$1"
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exec < "$NNN_FIFO"
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# use cat instead of 'exec <' to avoid issues with dash shell
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# shellcheck disable=SC2002
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cat "$NNN_FIFO" |\
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while read -r selection ; do
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preview_file "$selection"
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done
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exit 0
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fi
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if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.' ; then
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if [ -z "$SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ] ; then
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SPLIT='v'
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elif [ "$SPLIT" != 'v' ] ; then
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SPLIT='h'
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fi
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if [ "$TERMINAL" = "tmux" ]; then
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# tmux splits are inverted
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if [ "$SPLIT" = "v" ]; then SPLIT="h"; else SPLIT="v"; fi
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tmux split-window -e "NNN_FIFO=$NNN_FIFO" -e "PREVIEW_MODE=1" -d"$SPLIT" "$0" "$1"
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elif [ "$TERMINAL" = "kitty" ]; then
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# Setting the layout for the new window.
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kitty @ goto-layout splits >/dev/null
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# Trying to use kitty's integrated window management as the split window.
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kitty @ launch --no-response --title "nnn preview" --keep-focus \
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--cwd "$PWD" --env "NNN_FIFO=$NNN_FIFO" --env "PREVIEW_MODE=1" \
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--location "${SPLIT}split" "$0" "$1" >/dev/null
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# Restoring the previous layout.
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kitty @ last-used-layout --no-response >/dev/null 2>&1
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else
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PREVIEW_MODE=1 $TERMINAL -e "$0" "$1" &
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fi
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