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#!/usr/bin/env bash
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# fzf-tmux: starts fzf in a tmux pane
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# usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
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fail() {
>&2 echo "$1"
exit 2
}
fzf="$(command -v fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
[[ -x "$fzf" ]] || fail 'fzf executable not found'
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args=()
opt=""
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skip=""
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swap=""
close=""
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term=""
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[ -n "$LINES" ] && lines=$LINES || lines=$(tput lines)
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while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
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-)
term=1
;;
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-w*|-h*|-d*|-u*|-r*|-l*)
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if [ -n "$skip" ]; then
args+=("$1")
shift
continue
fi
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if [[ "$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
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if [[ "$1" =~ ^[0-9]+%?$ ]]; then
size="$1"
else
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[ -n "$1" -a "$1" != "--" ] && args+=("$1")
shift
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continue
fi
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fi
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if [[ "$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
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if [[ "$arg" =~ ^.l ]]; then
[ -n "$COLUMNS" ] && max=$COLUMNS || max=$(tput cols)
else
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max=$lines
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fi
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size=$(( 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+=("$1")
;;
esac
shift
done
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if ! [ -n "$TMUX" -a "$lines" -gt 15 ]; then
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fzf "${args[@]}"
exit $?
fi
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# Handle zoomed tmux pane by moving it to a temp window
if tmux list-panes -F '#F' | grep -q Z; then
zoomed=1
original_window=$(tmux display-message -p "#{window_id}")
tmp_window=$(tmux new-window -d -P -F "#{window_id}" "bash -c 'while :; do for c in \\| / - \\\\; do sleep 0.2; printf \"\\r\$c fzf-tmux is running\\r\"; done; done'")
tmux swap-pane -t $tmp_window \; select-window -t $tmp_window
fi
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set -e
# Clean up named pipes on exit
id=$RANDOM
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argsf="${TMPDIR:-/tmp}/fzf-args-$id"
fifo1="${TMPDIR:-/tmp}/fzf-fifo1-$id"
fifo2="${TMPDIR:-/tmp}/fzf-fifo2-$id"
fifo3="${TMPDIR:-/tmp}/fzf-fifo3-$id"
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cleanup() {
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rm -f $argsf $fifo1 $fifo2 $fifo3
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# Remove temp window if we were zoomed
if [ -n "$zoomed" ]; then
tmux swap-pane -t $original_window \; \
select-window -t $original_window \; \
kill-window -t $tmp_window \; \
resize-pane -Z
fi
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}
trap cleanup EXIT SIGINT SIGTERM
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envs="env TERM=$TERM "
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[ -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 -m o+w $fifo2
mkfifo -m o+w $fifo3
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# Build arguments to fzf
opts=""
for arg in "${args[@]}"; do
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arg="${arg//\\/\\\\}"
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arg="${arg//\"/\\\"}"
arg="${arg//\`/\\\`}"
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arg="${arg//$/\\$}"
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opts="$opts \"$arg\""
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done
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if [ -n "$term" -o -t 0 ]; then
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cat <<< "\"$fzf\" $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
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tmux set-window-option synchronize-panes off \;\
set-window-option remain-on-exit off \;\
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split-window $opt "cd $(printf %q "$PWD");$envs bash $argsf" $swap \
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> /dev/null 2>&1
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else
mkfifo $fifo1
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cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
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tmux set-window-option synchronize-panes off \;\
set-window-option remain-on-exit off \;\
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split-window $opt "$envs bash $argsf" $swap \
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> /dev/null 2>&1
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cat <&0 > $fifo1 &
fi
cat $fifo2
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exit "$(cat $fifo3)"
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