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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]
args=()
opt=""
skip=""
swap=""
close=""
term=""
while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
-)
term=1
;;
-w*|-h*|-d*|-u*|-r*|-l*)
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
if [ ${#arg} -gt 2 ]; then
size="${arg:2}"
else
shift
if [[ "$1" =~ ^[0-9]+%?$ ]]; then
size="$1"
else
[ -n "$1" -a "$1" != "--" ] && args+=("$1")
shift
continue
fi
fi
if [[ "$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
;;
--)
# "--" can be used to separate fzf-tmux options from fzf options to
# avoid conflicts
skip=1
;;
*)
args+=("$1")
;;
esac
shift
done
if [ -z "$TMUX_PANE" ] || tmux list-panes -F '#F' | grep -q Z; then
fzf "${args[@]}"
exit $?
fi
set -e
# Clean up named pipes on exit
id=$RANDOM
argsf="${TMPDIR:-/tmp}/fzf-args-$id"
fifo1="${TMPDIR:-/tmp}/fzf-fifo1-$id"
fifo2="${TMPDIR:-/tmp}/fzf-fifo2-$id"
fifo3="${TMPDIR:-/tmp}/fzf-fifo3-$id"
cleanup() {
rm -f $argsf $fifo1 $fifo2 $fifo3
}
trap cleanup EXIT SIGINT SIGTERM
fail() {
>&2 echo "$1"
exit 2
}
fzf="$(which fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
[ -x "$fzf" ] || fail "fzf executable not found"
envs="env TERM=$TERM "
[ -n "$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")"
mkfifo $fifo2
mkfifo $fifo3
# Build arguments to fzf
opts=""
for arg in "${args[@]}"; do
arg="${arg//\"/\\\"}"
arg="${arg//\`/\\\`}"
opts="$opts \"$arg\""
done
if [ -n "$term" -o -t 0 ]; then
cat <<< "$fzf $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
tmux set-window-option -q synchronize-panes off \;\
split-window $opt "cd $(printf %q "$PWD");$envs bash $argsf" $swap
else
mkfifo $fifo1
cat <<< "$fzf $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
tmux set-window-option -q synchronize-panes off \;\
split-window $opt "$envs bash $argsf" $swap
cat <&0 > $fifo1 &
fi
cat $fifo2
exit "$(cat $fifo3)"
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