fzf/bin/fzf-tmux

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#!/usr/bin/env bash
# fzf-tmux: starts fzf in a tmux pane
# usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
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args=()
opt=""
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skip=""
swap=""
close=""
term=""
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while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
-)
term=1
;;
-w*|-h*|-d*|-u*|-r*|-l*)
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if [ -n "$skip" ]; then
args+=("$1")
shift
continue
fi
if [[ "$arg" =~ ^.[lrw] ]]; then
opt="-h"
if [[ "$arg" =~ ^.l ]]; then
opt="$opt -d"
swap="; swap-pane -D ; select-pane -L"
close="; tmux swap-pane -D"
fi
else
opt=""
if [[ "$arg" =~ ^.u ]]; then
opt="$opt -d"
swap="; swap-pane -D ; select-pane -U"
close="; tmux swap-pane -D"
fi
fi
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if [ ${#arg} -gt 2 ]; then
size="${arg:2}"
else
shift
if [[ "$1" =~ ^[0-9]+%?$ ]]; then
size="$1"
else
[ -n "$1" -a "$1" != "--" ] && args+=("$1")
shift
continue
fi
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fi
if [[ "$size" =~ %$ ]]; then
size=${size:0:((${#size}-1))}
if [ -n "$swap" ]; then
opt="$opt -p $(( 100 - size ))"
else
opt="$opt -p $size"
fi
else
if [ -n "$swap" ]; then
if [[ "$arg" =~ ^.l ]]; then
[ -n "$COLUMNS" ] && max=$COLUMNS || max=$(tput cols)
else
[ -n "$LINES" ] && max=$LINES || max=$(tput lines)
fi
size=$(( max - size ))
[ $size -lt 0 ] && size=0
opt="$opt -l $size"
else
opt="$opt -l $size"
fi
fi
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;;
--)
# "--" can be used to separate fzf-tmux options from fzf options to
# avoid conflicts
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skip=1
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;;
*)
args+=("$1")
;;
esac
shift
done
if [ -z "$TMUX_PANE" ]; then
fzf "${args[@]}"
exit $?
fi
set -e
# Build arguments to fzf
[ ${#args[@]} -gt 0 ] && fzf_args=$(printf '\\"%s\\" ' "${args[@]}"; echo '')
# Clean up named pipes on exit
id=$RANDOM
fifo1=/tmp/fzf-fifo1-$id
fifo2=/tmp/fzf-fifo2-$id
fifo3=/tmp/fzf-fifo3-$id
cleanup() {
rm -f $fifo1 $fifo2 $fifo3
}
trap cleanup EXIT SIGINT SIGTERM
fail() {
>&2 echo "$1"
exit 1
}
fzf=$(which fzf 2> /dev/null) || fail "fzf executable not found"
envs=""
[ -n "$FZF_DEFAULT_OPTS" ] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
[ -n "$FZF_DEFAULT_COMMAND" ] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
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mkfifo $fifo2
mkfifo $fifo3
if [ -n "$term" -o -t 0 ]; then
tmux set-window-option -q synchronize-panes off \;\
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split-window $opt "$envs"' sh -c "'$fzf' '"$fzf_args"' > '$fifo2'; echo \$? > '$fifo3' '"$close"'"' $swap
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else
mkfifo $fifo1
tmux set-window-option -q synchronize-panes off \;\
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split-window $opt "$envs"' sh -c "'$fzf' '"$fzf_args"' < '$fifo1' > '$fifo2'; echo \$? > '$fifo3' '"$close"'"' $swap
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cat <&0 > $fifo1 &
fi
cat $fifo2
[ "$(cat $fifo3)" = '0' ]