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https://github.com/jarun/nnn.git
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perf(preview-tui): replace env for loop with parameter expansion
This commit is contained in:
Luuk van Baal
parent
432b0755d3
commit
d3b5d0e49d
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@ -13,7 +13,7 @@
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# - Windows Terminal (https://github.com/Microsoft/Terminal | https://aka.ms/terminal) with WSL, or
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# - $NNN_TERMINAL set to a terminal (it's xterm by default).
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# - less or $NNN_PAGER
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# - tree or exa or ls
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# - tree or exa or (GNU) ls
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# - mediainfo or file
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# - mktemp
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# - unzip
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@ -61,10 +61,6 @@
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# will try to use a kitty terminal split. And as a final fallback, a
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# different terminal window will be used ($NNN_TERMINAL).
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#
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# Tmux, wezterm and kitty users can configure $NNN_SPLIT to either "h" or "v" to set a
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# 'h'orizontal split or a 'v'ertical split (as in, the line that splits the
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# windows will be horizontal or vertical).
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#
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# Kitty users need something similar to the following in their kitty.conf:
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# - `allow_remote_control yes`
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# - `listen_on unix:$TMPDIR/kitty`
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@ -75,12 +71,14 @@
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# Wezterm should work out of the box. If `NNN_PREVIEWIMGPROG` is not specified it will use
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# built in iTerm2 image protocol.
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#
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# Iterm2 users are recommended to use viu to view images without getting pixelated.
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# Note that GNU ls is used for its `--group-directories-first` flag.
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# On MacOS this may be installed with `brew install coreutils`, or the flag can be removed.
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# iTerm2 users are recommended to use viu to view images without getting pixelated.
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#
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# Windows Terminal users can set "Profile termination behavior" under "Profile > Advanced" settings
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# to automatically close pane on quit when exit code is 0.
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#
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# Shell: POSIX compliant
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# Shell: Bash (for environment manipulation through arrays)
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# Authors: Todd Yamakawa, Léo Villeveygoux, @Recidiviste, Mario Ortiz Manero, Luuk van Baal, @WanderLanz
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NNN_SPLIT=${NNN_SPLIT:-} # Set permanent split direction
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@ -92,7 +90,6 @@ NNN_PARENT=${NNN_FIFO#*.}
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ENVVARS=(
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"PWD=$PWD"
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"PATH=$PATH"
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"PREVIEW_MODE=$2"
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"NNN_FIFO=$NNN_FIFO"
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"NNN_SCOPE=${NNN_SCOPE:-0}"
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"NNN_PISTOL=${NNN_PISTOL:-0}"
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@ -109,98 +106,92 @@ ENVVARS=(
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"PREVIEWPID=$TMPDIR/nnn-preview-tui-previewpid.$NNN_PARENT"
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"CURSEL=$TMPDIR/nnn-preview-tui-selection.$NNN_PARENT"
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"FIFO_UEBERZUG=$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NNN_PARENT"
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"FIFO_OSASCRIPT=$TMPDIR/nnn-preview-tui-osascript-fifo.$NNN_PARENT"
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"POSOFFSET=$TMPDIR/nnn-preview-tui-posoffset"
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)
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if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
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NNN_TERMINAL=tmux
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elif [ -n "$KITTY_LISTEN_ON" ]; then
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NNN_TERMINAL=kitty
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elif [ -n "$WEZTERM_PANE" ]; then
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NNN_TERMINAL=wezterm
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elif [ -z "$NNN_TERMINAL" ] && [ "$TERM_PROGRAM" = "iTerm.app" ]; then
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NNN_TERMINAL=iterm
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mkfifo "$FIFO_OSASCRIPT" || exit 1
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elif [ -n "$WT_SESSION" ]; then
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NNN_TERMINAL=winterm
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else
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NNN_TERMINAL="${NNN_TERMINAL:-xterm}"
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fi
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if [ -z "$NNN_SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ]; then
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NNN_SPLIT='h'
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elif [ "$NNN_SPLIT" != 'h' ]; then
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NNN_SPLIT='v'
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fi
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ENVVARS+=(
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"NNN_SPLIT=$NNN_SPLIT"
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"NNN_TERMINAL=$NNN_TERMINAL"
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)
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ENVARGS=()
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for env in "${ENVVARS[@]}"; do
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export "${env?}"
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case "$NNN_TERMINAL" in
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tmux) ENVARGS+=(-e "$env") ;;
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kitty) ENVARGS+=(--env "$env") ;;
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winterm|iterm|*) ENVARGS+=("$env") ;;
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esac
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done
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trap '' PIPE
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exists() { type "$1" >/dev/null 2>&1 ;}
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pkill() { command pkill "$@" >/dev/null 2>&1 ;}
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prompt() { printf "%b" "$@"; cfg=$(stty -g); stty raw -echo; head -c 1; stty "$cfg" ;}
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prompt() { clear; printf "%b" "$@"; cfg=$(stty -g); stty raw -echo; head -c 1; stty "$cfg" ;}
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pidkill() {
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if [ -f "$1" ]; then
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PID="$(cat "$1" 2>/dev/null)" || return 1
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kill "$PID" >/dev/null 2>&1
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RET=$?
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wait "$PID" 2>/dev/null
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return $RET
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fi
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return 1
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if [ -f "$1" ]; then
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PID="$(cat "$1" 2>/dev/null)" || return 1
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kill "$PID" >/dev/null 2>&1
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RET=$?
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wait "$PID" 2>/dev/null
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return $RET
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fi
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return 1
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}
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start_preview() {
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if [ -e "${TMUX%%,*}" ] && tmux -V | grep -q '[ -][3456789]\.'; then
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NNN_TERMINAL=tmux
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elif [ -n "$KITTY_LISTEN_ON" ]; then
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NNN_TERMINAL=kitty
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elif [ -n "$WEZTERM_PANE" ]; then
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NNN_TERMINAL=wezterm
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elif [ -z "$NNN_TERMINAL" ] && [ "$TERM_PROGRAM" = "iTerm.app" ]; then
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NNN_TERMINAL=iterm
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elif [ -n "$WT_SESSION" ]; then
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NNN_TERMINAL=winterm
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else
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NNN_TERMINAL="${NNN_TERMINAL:-xterm}"
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fi
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if [ -z "$NNN_SPLIT" ] && [ $(($(tput lines) * 2)) -gt "$(tput cols)" ]; then
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NNN_SPLIT='h'
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elif [ "$NNN_SPLIT" != 'h' ]; then
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NNN_SPLIT='v'
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fi
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ENVVARS+=("NNN_TERMINAL=$NNN_TERMINAL" "NNN_SPLIT=$NNN_SPLIT" "QLPATH=$2" "PREVIEW_MODE=1")
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case "$NNN_TERMINAL" in
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iterm|winterm) # need run in separate shell command: escape
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ENVVARS=("${ENVVARS[@]/#/\\\"}")
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ENVVARS=("${ENVVARS[@]/%/\\\"}")
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command="$SHELL -c 'env ${ENVVARS[*]} \\\"$0\\\" \\\"$1\\\"'" ;;
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esac
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case "$NNN_TERMINAL" in
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tmux) # tmux splits are inverted
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ENVVARS=("${ENVVARS[@]/#/-e}")
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if [ "$NNN_SPLIT" = "v" ]; then split="h"; else split="v"; fi
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tmux split-window "${ENVARGS[@]}" -d"$split" -p"$NNN_SPLITSIZE" "$0" "$1" 1 ;;
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tmux split-window "${ENVVARS[@]}" -d"$split" -p"$NNN_SPLITSIZE" "$0" "$1" ;;
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kitty) # Setting the layout for the new window. It will be restored after the script ends.
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ENVVARS=("${ENVVARS[@]/#/--env=}")
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kitty @ goto-layout splits
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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 "preview-tui" --keep-focus \
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--cwd "$PWD" "${ENVARGS[@]}" --location "${NNN_SPLIT}split" "$0" "$1" 1 ;;
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--cwd "$PWD" "${ENVVARS[@]}" --location "${NNN_SPLIT}split" "$0" "$1" ;;
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wezterm)
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export "${ENVVARS[@]}"
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if [ "$NNN_SPLIT" = "v" ]; then split="--horizontal"; else split="--bottom"; fi
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wezterm cli split-pane --cwd "$PWD" $split --percent "$NNN_SPLITSIZE" "$0" "$1" 1 >/dev/null
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wezterm cli split-pane --cwd "$PWD" $split --percent "$NNN_SPLITSIZE" "$0" "$1" >/dev/null
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wezterm cli activate-pane-direction Prev ;;
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iterm)
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echo "cd ${PWD@Q}; env ${ENVARGS[*]@Q} ${0@Q} ${1@Q} 1" > "$FIFO_OSASCRIPT" &
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if [ "$NNN_SPLIT" = "h" ]; then split="horizontally"; else split="vertically"; fi
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osascript <<-EOF
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tell application "iTerm"
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tell current session of current window
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split $split with default profile command "$SHELL $FIFO_OSASCRIPT"
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split $split with default profile command "$command"
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end tell
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end tell
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EOF
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;;
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winterm)
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if [ "$NNN_SPLIT" = "h" ]; then split="H"; else split="V"; fi
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wt -w 0 sp -$split -s"0.$NNN_SPLITSIZE" bash -c "cd ${PWD@Q} ; \
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env ${ENVARGS[*]@Q} QLPATH=${2@Q} ${0@Q} ${1@Q} 1" \; -w 0 mf previous 2>/dev/null ;;
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wt -w 0 sp -$split -s"0.$NNN_SPLITSIZE" "$command" \; -w 0 mf previous 2>/dev/null ;;
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*) if [ -n "$2" ]; then
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env "${ENVARGS[@]}" QUICKLOOK=1 QLPATH="$2" "$0" "$1" 1 &
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env "${ENVVARS[@]}" QUICKLOOK=1 "$0" "$1" &
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else
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env "${ENVARGS[@]}" "$NNN_TERMINAL" -e "$0" "$1" 1 &
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env "${ENVVARS[@]}" "$NNN_TERMINAL" -e "$0" "$1" &
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fi ;;
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esac
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}
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toggle_preview() {
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export "${ENVVARS[@]}"
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if exists QuickLook.exe; then
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QLPATH="QuickLook.exe"
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elif exists Bridge.exe; then
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@ -417,8 +408,7 @@ generate_preview() {
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image_preview() {
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clear
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exec >/dev/tty
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if [ "$NNN_TERMINAL" = "kitty" ]; then
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# Kitty terminal users can use the native image preview method
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if [ "$NNN_TERMINAL" = "kitty" ] && [ -z "$NNN_PREVIEWIMGPROG" ]; then
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kitty +kitten icat --silent --scale-up --place "$1"x"$2"@0x0 --transfer-mode=stream --stdin=no "$3" &
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elif [ "$NNN_TERMINAL" = "wezterm" ] && [ -z "$NNN_PREVIEWIMGPROG" ]; then
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wezterm imgcat "$3" &
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@ -486,10 +476,8 @@ if [ "$PREVIEW_MODE" -eq 1 ] 2>/dev/null; then
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exit 0
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else
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if [ ! -r "$NNN_FIFO" ]; then
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clear
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prompt "No FIFO available! (\$NNN_FIFO='$NNN_FIFO')\nPlease read Usage in '$0'."
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elif [ "$KITTY_WINDOW_ID" ] && [ -z "$TMUX" ] && [ -z "$KITTY_LISTEN_ON" ]; then
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clear
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prompt "\$KITTY_LISTEN_ON not set!\nPlease read Usage in '$0'."
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else
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toggle_preview "$1" &
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