From bd8edd113a05043b74d826bdee35c92ee0c46fd1 Mon Sep 17 00:00:00 2001 From: Daniel Flanagan Date: Mon, 17 Oct 2022 13:34:30 -0500 Subject: [PATCH] Fix nnn --- common/fish/config.fish | 4 + common/fish/functions.fish | 12 - common/kitty/kitty.conf | 1 + common/nnn/config.fish | 42 +++ common/nnn/plugins/preview | 591 ++++++++++++++++++++++++++++--------- 5 files changed, 503 insertions(+), 147 deletions(-) diff --git a/common/fish/config.fish b/common/fish/config.fish index 880ad5b..3884d8c 100755 --- a/common/fish/config.fish +++ b/common/fish/config.fish @@ -41,6 +41,10 @@ if test -f /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh set --prepend --export --global fish_user_paths $HOME/.nix-profile/bin /nix/var/nix/profiles/default/bin end +if has_command nnn + source $DOTFILES_PATH/common/nnn/config.fish +end + test $PWD = $HOME && begin cd $NICE_HOME || cd end diff --git a/common/fish/functions.fish b/common/fish/functions.fish index 58ed57d..e3712e5 100644 --- a/common/fish/functions.fish +++ b/common/fish/functions.fish @@ -55,18 +55,6 @@ alias ....... "d ../../../../../.." alias ........ "d ../../../../../../.." alias ......... "d ../../../../../../../.." -if has_command nnn - function r --wraps nnn --description 'Run nnn with support for jump-to-directory-on-exit via ^G' - # TODO: this would break with multiple nnn instances, right? - # probably need to mktemp instead - set -u NNN_TMPFILE (mktemp) - export NNN_TMPFILE - nnn -P p $argv - test -e $NNN_TMPFILE && source $NNN_TMPFILE && cp $NNN_TMPFILE ~/.nnn-last-tmpfile && rm $NNN_TMPFILE - end - alias l r -end - has_command tmux && alias t "tmux" has_command rsync && alias rcp 'rsync -r -ah --progress' has_command bat && alias cat bat diff --git a/common/kitty/kitty.conf b/common/kitty/kitty.conf index 058336f..9e57341 100644 --- a/common/kitty/kitty.conf +++ b/common/kitty/kitty.conf @@ -11,6 +11,7 @@ font_size 12.5 # font_features Iosevka-Heavy-Italic +calt +dlig allow_remote_control yes +listen_on unix:@kitty repaint_delay 5 input_delay 5 sync_to_monitor yes diff --git a/common/nnn/config.fish b/common/nnn/config.fish index 70aa433..9aae810 100644 --- a/common/nnn/config.fish +++ b/common/nnn/config.fish @@ -1,4 +1,46 @@ +# global set -Ux NNN_OPTS EHacdx set -Ux NNN_COLORS 1234 set -Ux NNN_PLUG p:preview set -Ux NNN_FCOLORS 030304020005050805030501 + +# per-shell +set --export NNN_TMPDIR (mktemp -d) +set --export NNN_TMPFILE $NNN_TMPDIR/tmp +mkfifo $NNN_TMPDIR/fifo +set --export NNN_FIFO $NNN_TMPDIR/fifo + +function n --wraps nnn --description 'support nnn quit and change directory' + # Block nesting of nnn in subshells + if test -n "$NNNLVL" -a "$NNNLVL" -ge 1 + echo "nnn is already running" + return + end + + # The behaviour is set to cd on quit (nnn checks if NNN_TMPFILE is set) + # If NNN_TMPFILE is set to a custom path, it must be exported for nnn to + # see. To cd on quit only on ^G, remove the "-x" from both lines below, + # without changing the paths. + if test -n "$XDG_CONFIG_HOME" + set -x NNN_TMPFILE "$XDG_CONFIG_HOME/nnn/.lastd" + else + set -x NNN_TMPFILE "$HOME/.config/nnn/.lastd" + end + + # Unmask ^Q (, ^V etc.) (if required, see `stty -a`) to Quit nnn + # stty start undef + # stty stop undef + # stty lwrap undef + # stty lnext undef + + # The command function allows one to alias this function to `nnn` without + # making an infinitely recursive alias + command nnn -P p $argv + + if test -e $NNN_TMPFILE + source $NNN_TMPFILE + rm $NNN_TMPFILE + end +end + +alias l 'n' diff --git a/common/nnn/plugins/preview b/common/nnn/plugins/preview index 8553652..b058aec 100755 --- a/common/nnn/plugins/preview +++ b/common/nnn/plugins/preview @@ -1,161 +1,482 @@ #!/usr/bin/env sh -SPLIT="$SPLIT" -TERMINAL="$TERMINAL" +# Description: Terminal based file previewer +# +# Note: This plugin needs a "NNN_FIFO" to work. See man. +# +# Dependencies: +# - Supports 5 independent methods to preview with: +# - tmux (>=3.0), or +# - kitty with allow_remote_control and listen_on set in kitty.conf, or +# - QuickLook on WSL (https://github.com/QL-Win/QuickLook), or +# - Windows Terminal (https://github.com/Microsoft/Terminal | https://aka.ms/terminal) with WSL, 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: bsdtar or atool for additional archive preview +# - optional: bat for code syntax highlighting +# - optional: ueberzug, kitty terminal, viu or catimg for images +# - optional: convert(ImageMagick) for playing gif preview (required for kitty image previews) +# - 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: djvulibre for djvu +# - optional: glow or lowdown for markdown +# - optional: w3m or lynx or elinks for html +# - optional: set/export ICONLOOKUP as 1 to enable file icons in front of directory previews with .iconlookup +# Icons and colors are configureable in .iconlookup +# - optional: scope.sh file viewer from ranger. +# 1. drop scope.sh executable in $PATH +# 2. set/export $USE_SCOPE as 1 +# - optional: pistol file viewer (https://github.com/doronbehar/pistol). +# 1. install pistol +# 2. set/export $USE_PISTOL 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 launch the `preview-tui` plugin in `nnn`. +# +# 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 $SPLIT to either "h" or "v" to set a +# 'h'orizontal split or a 'v'ertical split (as in, the line that splits the +# windows will be horizontal or vertical). +# +# Kitty users need something similar to the following in their kitty.conf: +# - `allow_remote_control yes` +# - `listen_on unix:$TMPDIR/kitty` +# - `enabled_layouts splits` (optional) +# With ImageMagick installed, this terminal can use the icat kitten to display images. +# Refer to kitty documentation for further details. +# +# Iterm2 users are recommended to use viu to view images without getting pixelated. +# +# Windows Terminal users can set "Profile termination behavior" under "Profile > Advanced" settings +# to automaticaly close pane on quit when exit code is 0. +# +# Shell: POSIX compliant +# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero, Luuk van Baal, @WanderLanz + +#SPLIT="$SPLIT" # you can set a permanent split here +#TERMINAL="$TERMINAL" # same goes for the terminal +SPLIT_SIZE="${SPLIT_SIZE:-50}" # split size in percentage for supported previewers USE_SCOPE="${USE_SCOPE:-0}" -IN_KITTY=0 -[ -z "$SSH_CONNECTION" ] && [ -n "$KITTY_WINDOW_ID" ] && kitty @ ls --no-response >/dev/null 2>&1 && IN_KITTY=1 +USE_PISTOL="${USE_PISTOL:-0}" +ICONLOOKUP="${ICONLOOKUP:-0}" +PAGER="${PAGER:-less -P?n -R}" +TMPDIR="${TMPDIR:-/tmp}" +BAT_STYLE="${BAT_STYLE:-numbers}" +BAT_THEME="${BAT_THEME:-ansi}" +# Consider setting NNN_PREVIEWDIR to $XDG_CACHE_HOME/nnn/previews if you want to keep previews on disk between reboots +NNN_PREVIEWDIR="${NNN_PREVIEWDIR:-$TMPDIR/nnn/previews}" +NNN_PREVIEWWIDTH="${NNN_PREVIEWWIDTH:-1920}" +NNN_PREVIEWHEIGHT="${NNN_PREVIEWHEIGHT:-1080}" +NNN_PARENT="${NNN_FIFO#*.}" +[ "$NNN_PARENT" -eq "$NNN_PARENT" ] 2>/dev/null || NNN_PARENT="" +FIFOPID="$TMPDIR/nnn-preview-tui-fifopid.$NNN_PARENT" +PREVIEWPID="$TMPDIR/nnn-preview-tui-pagerpid.$NNN_PARENT" +CURSEL="$TMPDIR/nnn-preview-tui-selection.$NNN_PARENT" +FIFO_UEBERZUG="$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NNN_PARENT" +POSOFFSET="$TMPDIR/nnn-preview-tui-posoffset" -if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then - TERMINAL=tmux -elif [ "$IN_KITTY" == 1 ]; then - TERMINAL=kitty -else - TERMINAL="${TERMINAL:-xterm}" -fi +exists() { type "$1" >/dev/null 2>&1 ;} +pkill() { command pkill "$@" >/dev/null 2>&1 ;} +pidkill() { [ -f "$1" ] && kill "$(cat "$1")" >/dev/null 2>&1 ;} +prompt() { printf "%b" "$@"; cfg=$(stty -g); stty raw -echo; head -c 1; stty "$cfg" ;} -# we can't actually work if we're about to try the kitty method over SSH, so just exit -[ -n "$SSH_CONNECTION" ] && [ "$TERMINAL" = "kitty" ] && exit 0 +start_preview() { + [ "$PAGER" = "most" ] && PAGER="less -R" -if [ -z "$SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ]; then - SPLIT='h' -elif [ "$SPLIT" != 'h' ]; then - SPLIT='v' -fi + if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then + TERMINAL=tmux + elif [ -n "$KITTY_LISTEN_ON" ]; then + TERMINAL=kitty + elif [ -z "$TERMINAL" ] && [ "$TERM_PROGRAM" = "iTerm.app" ]; then + TERMINAL=iterm + elif [ -n "$WT_SESSION" ]; then + TERMINAL=winterm + else + TERMINAL="${TERMINAL:-xterm}" + fi -exists() { - which "$1" >/dev/null 2>&1 + if [ -z "$SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ]; then + SPLIT='h' + elif [ "$SPLIT" != 'h' ]; then + SPLIT='v' + fi + + case "$TERMINAL" in + tmux) # tmux splits are inverted + if [ "$SPLIT" = "v" ]; then DSPLIT="h"; else DSPLIT="v"; fi + DSPLIT="$SPLIT" + tmux split-window -e "NNN_FIFO=$NNN_FIFO" -e "PREVIEW_MODE=1" -e "CURSEL=$CURSEL" \ + -e "TMPDIR=$TMPDIR" -e "FIFOPID=$FIFOPID" -e "POSOFFSET=$POSOFFSET" \ + -e "BAT_STYLE=$BAT_STYLE" -e "BAT_THEME=$BAT_THEME" -e "PREVIEWPID=$PREVIEWPID" \ + -e "PAGER=$PAGER" -e "ICONLOOKUP=$ICONLOOKUP" -e "NNN_PREVIEWWIDTH=$NNN_PREVIEWWIDTH" \ + -e "USE_SCOPE=$USE_SCOPE" -e "SPLIT=$SPLIT" -e "USE_PISTOL=$USE_PISTOL" \ + -e "NNN_PREVIEWDIR=$NNN_PREVIEWDIR" -e "NNN_PREVIEWHEIGHT=$NNN_PREVIEWHEIGHT" \ + -e "FIFO_UEBERZUG=$FIFO_UEBERZUG" -e "QLPATH=$2" -d"$DSPLIT" -p"$SPLIT_SIZE" "$0" "$1" ;; + kitty) # Setting the layout for the new window. It will be restored after the script ends. + kitty @ goto-layout splits + # Trying to use kitty's integrated window management as the split window. All + # environmental variables that will be used in the new window must be explicitly passed. + kitty @ launch --no-response --title "nnn preview" --keep-focus \ + --cwd "$PWD" --env "PATH=$PATH" --env "NNN_FIFO=$NNN_FIFO" \ + --env "PREVIEW_MODE=1" --env "PAGER=$PAGER" --env "TMPDIR=$TMPDIR" \ + --env "USE_SCOPE=$USE_SCOPE" --env "SPLIT=$SPLIT" --env "TERMINAL=$TERMINAL"\ + --env "PREVIEWPID=$PREVIEWPID" --env "FIFO_UEBERZUG=$FIFO_UEBERZUG" \ + --env "ICONLOOKUP=$ICONLOOKUP" --env "NNN_PREVIEWHEIGHT=$NNN_PREVIEWHEIGHT" \ + --env "NNN_PREVIEWWIDTH=$NNN_PREVIEWWIDTH" --env "NNN_PREVIEWDIR=$NNN_PREVIEWDIR" \ + --env "USE_PISTOL=$USE_PISTOL" --env "BAT_STYLE=$BAT_STYLE" \ + --env "BAT_THEME=$BAT_THEME" --env "FIFOPID=$FIFOPID" \ + --env "CURSEL=$CURSEL" --location "${SPLIT}split" "$0" "$1" ;; + iterm) + command="$SHELL -c 'cd $PWD; \ + PATH=\\\"$PATH\\\" NNN_FIFO=\\\"$NNN_FIFO\\\" PREVIEW_MODE=1 PAGER=\\\"$PAGER\\\" \ + USE_SCOPE=\\\"$USE_SCOPE\\\" SPLIT=\\\"$SPLIT\\\" TERMINAL=\\\"$TERMINAL\\\" \ + PREVIEWPID=\\\"$PREVIEWPID\\\" CURSEL=\\\"$CURSEL\\\" TMPDIR=\\\"$TMPDIR\\\" \ + ICONLOOKUP=\\\"$ICONLOOKUP\\\" NNN_PREVIEWHEIGHT=\\\"$NNN_PREVIEWHEIGHT\\\" \ + NNN_PREVIEWWIDTH=\\\"$NNN_PREVIEWWIDTH\\\" NNN_PREVIEWDIR=\\\"$NNN_PREVIEWDIR\\\" \ + USE_PISTOL=\\\"$USE_PISTOL\\\" BAT_STYLE=\\\"$BAT_STYLE\\\" \ + BAT_THEME=\\\"$BAT_THEME\\\" FIFOPID=\\\"$FIFOPID\\\" \\\"$0\\\" \\\"$1\\\"'" + if [ "$SPLIT" = "h" ]; then split="horizontally"; else split="vertically"; fi + osascript <<-EOF + tell application "iTerm" + tell current session of current window + split $split with default profile command "$command" + end tell + end tell +EOF + ;; + winterm) + if [ "$SPLIT" = "h" ]; then split="H"; else split="V"; fi + cmd.exe /c wt -w 0 sp -$split -s$((SPLIT_SIZE / 100)) bash -c "cd $PWD \; \ + PATH='$PATH' NNN_FIFO=$NNN_FIFO PREVIEW_MODE=1 CURSEL=$CURSEL TMPDIR=$TMPDIR \ + FIFOPID=$FIFOPID BAT_STYLE=$BAT_STYLE BAT_THEME=$BAT_THEME PREVIEWPID=$PREVIEWPID \ + PAGER='$PAGER' ICONLOOKUP=$ICONLOOKUP NNN_PREVIEWWIDTH=$NNN_PREVIEWWIDTH \ + USE_SCOPE=$USE_SCOPE SPLIT=$SPLIT USE_PISTOL=$USE_PISTOL \ + NNN_PREVIEWDIR=$NNN_PREVIEWDIR NNN_PREVIEWHEIGHT=$NNN_PREVIEWHEIGHT \ + FIFO_UEBERZUG=$FIFO_UEBERZUG QLPATH=$2 $0 $1" \; -w 0 mf previous + ;; + *) if [ -n "$2" ]; then + QUICKLOOK=1 QLPATH="$2" PREVIEW_MODE=1 "$0" "$1" & + else + PREVIEWPID="$PREVIEWPID" CURSEL="$CURSEL" PREVIEW_MODE=1 \ + FIFOPID="$FIFOPID" FIFO_UEBERZUG="$FIFO_UEBERZUG" $TERMINAL -e "$0" "$1" & + fi ;; + esac +} + +toggle_preview() { + if exists QuickLook.exe; then + QLPATH="QuickLook.exe" + elif exists Bridge.exe; then + QLPATH="Bridge.exe" + fi + if pidkill "$FIFOPID"; then + [ -p "$NNN_PPIPE" ] && printf "0" > "$NNN_PPIPE" + pidkill "$PREVIEWPID" + pkill -f "tail --follow $FIFO_UEBERZUG" + if [ -n "$QLPATH" ] && stat "$1"; then + f="$(wslpath -w "$1")" && "$QLPATH" "$f" & + fi + else + [ -p "$NNN_PPIPE" ] && printf "1" > "$NNN_PPIPE" + start_preview "$1" "$QLPATH" + fi } fifo_pager() { - cmd="$1"; shift - tmpfifopath="${TMPDIR:-/tmp}/nnn-preview-tui-fifo.$$" - mkfifo "$tmpfifopath" || return - $PAGER < "$tmpfifopath" & - ( - exec > "$tmpfifopath" - "$cmd" "$@" & - ) - rm "$tmpfifopath" + cmd="$1" + shift + + # We use a FIFO to access $PAGER PID in jobs control + tmpfifopath="$TMPDIR/nnn-preview-tui-fifo.$$" + mkfifo "$tmpfifopath" || return + + $PAGER < "$tmpfifopath" & + printf "%s" "$!" > "$PREVIEWPID" + + ( + exec > "$tmpfifopath" + if [ "$cmd" = "pager" ]; then + if exists bat; then + bat --terminal-width="$cols" --decorations=always --color=always \ + --paging=never --style="$BAT_STYLE" --theme="$BAT_THEME" "$@" & + else + $PAGER "$@" & + fi + else + "$cmd" "$@" & + fi + ) + + 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" - # TODO: hexyl? - fi + printf -- "-------- \033[1;31mBinary file\033[0m --------\n" + if exists mediainfo; then + mediainfo "$1" + 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 "$1" - # return - # fi - - # Detecting the exact type of the file: the encoding, mime type, and - # extension in lowercase. - encoding="$(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 "$1" || return - if exists exa; then - fifo_pager exa --tree --level 3 --colour=always 2>/dev/null - elif exists tree; then - fifo_pager tree -L 3 -F - else - fifo_pager ls --color=always - fi - elif [ "$encoding" = "binary" ]; then - if [ "${mimetype%%/*}" = "image" ] ; then - if [ "$IN_KITTY" = "1" ]; 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 - 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 +handle_mime() { + case "$2" in + image/jpeg) image_preview "$cols" "$lines" "$1" ;; + image/gif) generate_preview "$cols" "$lines" "$1" "gif" ;; + image/vnd.djvu) generate_preview "$cols" "$lines" "$1" "djvu" ;; + image/*) generate_preview "$cols" "$lines" "$1" "image" ;; + video/*) generate_preview "$cols" "$lines" "$1" "video" ;; + audio/*) generate_preview "$cols" "$lines" "$1" "audio" ;; + application/font*|application/*opentype|font/*) generate_preview "$cols" "$lines" "$1" "font" ;; + */*office*|*/*document*) generate_preview "$cols" "$lines" "$1" "office" ;; + application/zip) fifo_pager unzip -l "$1" ;; + text/troff) + if exists man; then + fifo_pager man -Pcat -l "$1" + else + fifo_pager pager "$1" + fi ;; + *) handle_ext "$1" "$3" "$4" ;; + esac } -if [ "$PREVIEW_MODE" ] ; then - if [ ! -r "$NNN_FIFO" ] ; then - echo "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')" >&2 - read -r - exit 1 - fi +handle_ext() { + case "$2" in + epub) generate_preview "$cols" "$lines" "$1" "epub" ;; + pdf) generate_preview "$cols" "$lines" "$1" "pdf" ;; + gz|bz2) fifo_pager tar -tvf "$1" ;; + md) if exists glow; then + fifo_pager glow -s dark "$1" + elif exists lowdown; then + fifo_pager lowdown -Tterm "$1" + else + fifo_pager pager "$1" + fi ;; + htm|html|xhtml) + if exists w3m; then + fifo_pager w3m "$1" + elif exists lynx; then + fifo_pager lynx "$1" + elif exists elinks; then + fifo_pager elinks "$1" + else + fifo_pager pager "$1" + fi ;; + 7z|a|ace|alz|arc|arj|bz|cab|cpio|deb|jar|lha|lz|lzh|lzma|lzo\ + |rar|rpm|rz|t7z|tar|tbz|tbz2|tgz|tlz|txz|tZ|tzo|war|xpi|xz|Z) + if exists atool; then + fifo_pager atool -l "$1" + elif exists bsdtar; then + fifo_pager bsdtar -tvf "$1" + fi ;; + *) if [ "$3" = "bin" ]; then + fifo_pager print_bin_info "$1" + else + fifo_pager pager "$1" + fi ;; + esac +} - preview_file "$1" +preview_file() { + clear + # Trying to use pistol if it's available. + if [ "$USE_PISTOL" -ne 0 ] && exists pistol; then + fifo_pager pistol "$1" + return + fi - # use cat instead of 'exec <' to avoid issues with dash shell - # shellcheck disable=SC2002 - cat "$NNN_FIFO" | \ - while read -r selection ; do - preview_file "$selection" - done + # Trying to use scope.sh if it's available. + if [ "$USE_SCOPE" -ne 0 ] && exists scope.sh; then + fifo_pager scope.sh "$1" "$cols" "$lines" "$(mktemp -d)" "True" + return + fi - # TODO: detect if file is opened and close preview until back in nnn + # Use QuickLook if it's available. + if [ -n "$QUICKLOOK" ]; then + stat "$1" && f="$(wslpath -w "$1")" && "$QLPATH" "$f" & + return + fi - # Restoring the previous layout for kitty users. This will only work for - # kitty >= 0.18.0. - if [ "$TERMINAL" = "kitty" ]; then - kitty @ last-used-layout --no-response >/dev/null 2>&1 - fi + # Detecting the exact type of the file: the encoding, mime type, and extension in lowercase. + encoding="$(file -bL --mime-encoding -- "$1")" + mimetype="$(file -bL --mime-type -- "$1")" + ext="${1##*.}" + [ -n "$ext" ] && ext="$(printf "%s" "${ext}" | tr '[:upper:]' '[:lower:]')" + lines=$(tput lines) + cols=$(tput cols) - exit 0 -fi + # Otherwise, falling back to the defaults. + if [ -d "$1" ]; then + cd "$1" || return + if [ "$ICONLOOKUP" -ne 0 ] && [ -f "$(dirname "$0")"/.iconlookup ]; then + [ "$SPLIT" = v ] && BSTR="\n" + # shellcheck disable=SC2012 + ls -F --group-directories-first | head -n "$((lines - 3))" | "$(dirname "$0")"/.iconlookup -l "$cols" -B "$BSTR" -b " " + elif exists tree; then + fifo_pager tree --filelimit "$(find . -maxdepth 1 | wc -l)" -L 3 -C -F --dirsfirst --noreport + elif exists exa; then + exa -G --group-directories-first --colour=always + else + fifo_pager ls -F --group-directories-first --color=always + fi + elif [ "${encoding#*)}" = "binary" ]; then + handle_mime "$1" "$mimetype" "$ext" "bin" + else + handle_mime "$1" "$mimetype" "$ext" + fi +} -if [ "$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 +generate_preview() { + if [ -n "$QLPATH" ] && stat "$3"; then + f="$(wslpath -w "$3")" && "$QLPATH" "$f" & + elif [ ! -f "$NNN_PREVIEWDIR/$3.jpg" ] || [ -n "$(find -L "$3" -newer "$NNN_PREVIEWDIR/$3.jpg")" ]; then + mkdir -p "$NNN_PREVIEWDIR/${3%/*}" + case $4 in + audio) ffmpeg -i "$3" -filter_complex "scale=iw*min(1\,min($NNN_PREVIEWWIDTH/iw\,ih)):-1" "$NNN_PREVIEWDIR/$3.jpg" -y ;; + epub) gnome-epub-thumbnailer "$3" "$NNN_PREVIEWDIR/$3.jpg" ;; + font) fontpreview -i "$3" -o "$NNN_PREVIEWDIR/$3.jpg" ;; + gif) if [ -p "$FIFO_UEBERZUG" ] && exists convert; then + frameprefix="$NNN_PREVIEWDIR/$3/${3##*/}" + if [ ! -d "$NNN_PREVIEWDIR/$3" ]; then + mkdir -p "$NNN_PREVIEWDIR/$3" + convert -coalesce -resize "$NNN_PREVIEWWIDTH"x"$NNN_PREVIEWHEIGHT"\> "$3" "$frameprefix.jpg" || + MAGICK_TMPDIR="/tmp" convert -coalesce -resize "$NNN_PREVIEWWIDTH"x"$NNN_PREVIEWHEIGHT"\> "$3" "$frameprefix.jpg" + fi + frames=$(($(find "$NNN_PREVIEWDIR/$3" | wc -l) - 2)) + [ $frames -lt 0 ] && return + while true; do + for i in $(seq 0 $frames); do + image_preview "$1" "$2" "$frameprefix-$i.jpg" + sleep 0.1 + done + done & + printf "%s" "$!" > "$PREVIEWPID" + return + else + 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" + else + image_preview "$1" "$2" "$3" && return + fi ;; + office) libreoffice --convert-to jpg "$3" --outdir "$NNN_PREVIEWDIR/${3%/*}" + filename="$(printf "%s" "${3##*/}" | cut -d. -f1)" + mv "$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/$3.jpg" ;; + esac + fi + if [ -f "$NNN_PREVIEWDIR/$3.jpg" ]; then + image_preview "$1" "$2" "$NNN_PREVIEWDIR/$3.jpg" + else + fifo_pager print_bin_info "$3" + fi +} >/dev/null 2>&1 - # Trying to use kitty's integrated window management as the split window. - # All environmental variables that will be used in the new window must - # be explicitly passed. - kitty @ launch --no-response --title "nnn preview" --keep-focus \ - --cwd "$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" "$1" >/dev/null +image_preview() { + clear + exec >/dev/tty + if [ "$TERMINAL" = "kitty" ]; then + # Kitty terminal users can use the native image preview method + kitty +kitten icat --silent --scale-up --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no "$3" & + elif exists ueberzug; then + ueberzug_layer "$1" "$2" "$3" && return + elif exists catimg; then + catimg "$3" & + elif exists viu; then + viu -t "$3" & + else + fifo_pager print_bin_info "$3" && return + fi + printf "%s" "$!" > "$PREVIEWPID" +} + +ueberzug_layer() { + [ -f "$POSOFFSET" ] && read -r x y < "$POSOFFSET" + printf '{"action": "add", "identifier": "nnn_ueberzug", "x": %d, "y": %d, "width": "%d", "height": "%d", "scaler": "fit_contain", "path": "%s"}\n'\ + "${x:-0}" "${y:-0}" "$1" "$2" "$3" > "$FIFO_UEBERZUG" +} + +ueberzug_remove() { + printf '{"action": "remove", "identifier": "nnn_ueberzug"}\n' > "$FIFO_UEBERZUG" +} + +winch_handler() { + clear + pidkill "$PREVIEWPID" + if [ -p "$FIFO_UEBERZUG" ]; then + pkill -f "tail --follow $FIFO_UEBERZUG" + tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json & + fi + preview_file "$(cat "$CURSEL")" +} + +preview_fifo() { + while read -r selection; do + if [ -n "$selection" ]; then + pidkill "$PREVIEWPID" + [ -p "$FIFO_UEBERZUG" ] && ueberzug_remove + [ "$selection" = "close" ] && break + preview_file "$selection" + printf "%s" "$selection" > "$CURSEL" + fi + done < "$NNN_FIFO" + sleep 0.1 # make sure potential preview by winch_handler is killed + pkill -P "$$" +} + +if [ "$PREVIEW_MODE" ]; then + if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then + mkfifo "$FIFO_UEBERZUG" + tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json & + fi + + preview_file "$PWD/$1" + preview_fifo & + printf "%s" "$!" > "$FIFOPID" + printf "%s" "$PWD/$1" > "$CURSEL" + trap 'winch_handler; wait' WINCH + trap 'rm "$PREVIEWPID" "$CURSEL" "$FIFO_UEBERZUG" "$FIFOPID" "$POSOFFSET" 2>/dev/null' INT HUP EXIT + wait "$!" 2>/dev/null + exit 0 else - PREVIEW_MODE=1 $TERMINAL -e "$0" "$1" & + if [ ! -r "$NNN_FIFO" ]; then + clear + prompt "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')\nPlease read Usage in preview-tui." + elif [ "$KITTY_WINDOW_ID" ] && [ -z "$TMUX" ] && [ -z "$KITTY_LISTEN_ON" ]; then + clear + prompt "\$KITTY_LISTEN_ON not set!\nPlease read Usage in preview-tui." + else + toggle_preview "$1" & + fi fi