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@ -1,36 +1,66 @@
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#!/bin/bash
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#!/bin/sh
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# terminal application launcher for sway, using fzf
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# inspired by https://github.com/Biont/sway-launcher-desktop
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# original command:
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# Based on: https://github.com/swaywm/sway/issues/1367
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# bindsym $altkey+space exec termite --name=launcher -e \
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# "bash -c 'compgen -c | sort -u | fzf --no-extended --print-query | \
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# tail -n1 | xargs -r swaymsg -t command exec'"
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set -o pipefail
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shopt -s nullglob globstar
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HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/sway-launcher-history.txt"
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export FZF_DEFAULT_OPTS="--layout=reverse --no-extended --print-query --no-sort"
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FZF_OPTIONS="--layout=reverse --no-extended --print-query --no-sort"
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[ ! -f "$HIST_FILE" ] && touch {"$HIST_FILE"
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# Create fifo for populate fzf in async mode
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FZFPIPE=$(mktemp -u)
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mkfifo "$FZFPIPE"
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trap 'rm "$FZFPIPE"' EXIT INT
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#retrieve history and pipe it into our fifo
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readarray HIST_LINES <"$HIST_FILE"
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(printf '%s' "${HIST_LINES[@]#* }" >>"$FZFPIPE") &
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# Get command, if empty exit
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command=$(fzf <"$FZFPIPE" | tail -n1 || exit 1)
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[[ "$command" == "" ]] && exit 0
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# Update history
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index=$(printf '%s' "${HIST_LINES[@]}" | grep -n -Pe "^[0-9]+ ${command}$" | awk -F ':' '{print $1-1}')
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if [ -n "$index" ]; then
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occurences=${HIST_LINES[$index]%% *}
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occurences=$((occurences + 1))
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HIST_LINES[$index]="${occurences} ${command}"$'\n'
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# Get shell command list
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# This may include the occasional non-executable file
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# command_list=$({ IFS=:; ls -H $PATH; } | grep -v '/.*' | sort -u)
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command_list=$(\
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find $(echo $PATH | tr ':' ' ') -type f -executable -printf "\n%f" | \
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sort -u)
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# read existing command history
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if [ -f "$HIST_FILE" ]; then
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command_history=$(cat "$HIST_FILE")
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else
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HIST_LINES+=("1 $command"$'\n')
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command_history=""
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fi
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printf '%s' "${HIST_LINES[@]}" | sort --numeric-sort --reverse > "$HIST_FILE"
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swaymsg -t command exec "$command"
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exit 0
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# search command list
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command_str=$(printf "%s\n" "${command_history}" "${command_list}" | \
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sed -E 's/^[0-9]+ (.+)$/\1/' | \
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fzf $FZF_OPTIONS | \
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tail -n1) || exit 1
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if [ "$command_str" = "" ]; then
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exit 1
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fi
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# echo "Command: $command_str"
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# using \E flag from https://github.com/junegunn/fzfperl regex
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test "${command_str#*\\E}" != "$command_str" && echo "command can't contain '\E'"
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test "${command_str#*\\E}" != "$command_str" && exit 1
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# get full line from history (with count number)
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hist_line=$(echo "$command_history" | grep -Pe "^[0-9]+ \Q$command_str\E$")
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# echo "Hist Line: $hist_line"
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if [ "$hist_line" = "" ]; then
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hist_count=1
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else
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# Increment usage count
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hist_count=$(echo "$hist_line" | sed -E 's/^([0-9]+) .+$/\1/')
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hist_count=$((hist_count + 1))
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# delete line, to add updated later
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# echo "Hist Before: $command_history"
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command_history=$(echo "$command_history" | \
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grep --invert-match -Pe "^[0-9]+ \Q$command_str\E$")
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# echo "Hist After: $command_history"
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fi
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# update history
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update_line="${hist_count} ${command_str}"
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printf "%s\n" "${update_line}" "${command_history}" | \
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sort --numeric-sort --reverse > "$HIST_FILE"
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# echo "$update_line"
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# execute command
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echo "$command_str"
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swaymsg -t command exec "$command_str"
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