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Rewrite launcher

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Yorick Barbanneau 2020-08-01 00:31:29 +02:00
parent c8d0721292
commit 5a78719afc
1 changed files with 29 additions and 59 deletions
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88
bin/launcher.sh
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@ -1,66 +1,36 @@
#!/bin/sh #!/bin/bash
# terminal application launcher for sway, using fzf # terminal application launcher for sway, using fzf
# original command: # inspired by https://github.com/Biont/sway-launcher-desktop
# Based on: https://github.com/swaywm/sway/issues/1367
# bindsym $altkey+space exec termite --name=launcher -e \
# "bash -c 'compgen -c | sort -u | fzf --no-extended --print-query | \
# tail -n1 | xargs -r swaymsg -t command exec'"
set -o pipefail
shopt -s nullglob globstar
HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/sway-launcher-history.txt" HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/sway-launcher-history.txt"
FZF_OPTIONS="--layout=reverse --no-extended --print-query --no-sort" export FZF_DEFAULT_OPTS="--layout=reverse --no-extended --print-query --no-sort"
# Get shell command list [ ! -f "$HIST_FILE" ] && touch {"$HIST_FILE"
# This may include the occasional non-executable file # Create fifo for populate fzf in async mode
# command_list=$({ IFS=:; ls -H $PATH; } | grep -v '/.*' | sort -u) FZFPIPE=$(mktemp -u)
command_list=$(\ mkfifo "$FZFPIPE"
find $(echo $PATH | tr ':' ' ') -type f -executable -printf "\n%f" | \ trap 'rm "$FZFPIPE"' EXIT INT
sort -u)
# read existing command history #retrieve history and pipe it into our fifo
if [ -f "$HIST_FILE" ]; then readarray HIST_LINES <"$HIST_FILE"
command_history=$(cat "$HIST_FILE") (printf '%s' "${HIST_LINES[@]#* }" >>"$FZFPIPE") &
# Get command, if empty exit
command=$(fzf <"$FZFPIPE" | tail -n1 || exit 1)
[[ "$command" == "" ]] && exit 0
# Update history
index=$(printf '%s' "${HIST_LINES[@]}" | grep -n -Pe "^[0-9]+ ${command}$" | awk -F ':' '{print $1-1}')
if [ -n "$index" ]; then
occurences=${HIST_LINES[$index]%% *}
occurences=$((occurences + 1))
HIST_LINES[$index]="${occurences} ${command}"$'\n'
else else
command_history="" HIST_LINES+=("1 $command"$'\n')
fi fi
# search command list printf '%s' "${HIST_LINES[@]}" | sort --numeric-sort --reverse > "$HIST_FILE"
command_str=$(printf "%s\n" "${command_history}" "${command_list}" | \ swaymsg -t command exec "$command"
sed -E 's/^[0-9]+ (.+)$/\1/' | \ exit 0
fzf $FZF_OPTIONS | \
tail -n1) || exit 1
if [ "$command_str" = "" ]; then
exit 1
fi
# echo "Command: $command_str"
# using \E flag from https://github.com/junegunn/fzfperl regex
test "${command_str#*\\E}" != "$command_str" && echo "command can't contain '\E'"
test "${command_str#*\\E}" != "$command_str" && exit 1
# get full line from history (with count number)
hist_line=$(echo "$command_history" | grep -Pe "^[0-9]+ \Q$command_str\E$")
# echo "Hist Line: $hist_line"
if [ "$hist_line" = "" ]; then
hist_count=1
else
# Increment usage count
hist_count=$(echo "$hist_line" | sed -E 's/^([0-9]+) .+$/\1/')
hist_count=$((hist_count + 1))
# delete line, to add updated later
# echo "Hist Before: $command_history"
command_history=$(echo "$command_history" | \
grep --invert-match -Pe "^[0-9]+ \Q$command_str\E$")
# echo "Hist After: $command_history"
fi
# update history
update_line="${hist_count} ${command_str}"
printf "%s\n" "${update_line}" "${command_history}" | \
sort --numeric-sort --reverse > "$HIST_FILE"
# echo "$update_line"
# execute command
echo "$command_str"
swaymsg -t command exec "$command_str"