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#!/bin/sh -e
#
# layout: save and restore byobu layouts
# Copyright (C) 2011-2014 Dustin Kirkland <kirkland@byobu.org>
#
# Authors: Dustin Kirkland <kirkland@byobu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
PKG="byobu"
[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"
# Get the layouts directory
DIR="$BYOBU_CONFIG_DIR/layouts"
mkdir -p "$DIR"
PRESETS="even-horizontal even-vertical main-horizontal main-vertical tiled"
current_panes=$(tmux list-panes | wc -l)
list_layouts() {
echo
echo "Byobu Saved Layouts"
local count=0 i= desc= count= p=
for i in $PRESETS "$DIR"/*; do
desc=${i##*/}
count=$(expr $count + 1)
[ -f "$i" ] && p=$(head -n1 "$i")
[ -n "$p" ] && p=" ($p splits)"
echo " $count. $desc$p"
done
echo
_RET="$count"
}
case "$1" in
"save")
layout=$(tmux list-windows | grep "(active)$" | sed -e "s/.*\[layout //" -e "s/\] .*(active)$//")
panes=$(tmux list-panes | wc -l)
if [ -n "$2" ]; then
name="$2"
else
echo
echo "Restore layout with <shift-F8>, save a layout with <shift-ctrl-F8>"
while true; do
list_layouts
echo -n "Enter a unique name to save this layout: "
name=$(head -n1)
valid=1
for i in $PRESETS "$DIR"/*; do
i=${i##*/}
if [ "$i" = "$name" ]; then
valid=0
fi
done
[ "$valid" = "1" ] && break
done
fi
printf "$panes\n$layout\n" > "$BYOBU_CONFIG_DIR/layouts/$name"
;;
"restore")
if [ -n "$2" ]; then
# Layout selected on the command line
name="$2"
else
# List the saved layouts, prompt the user to select one
list_layouts
count="$_RET"
while true; do
echo -n "Select a layout to restore [1-$count]: "
selected=$(head -n1)
if [ -n "$selected" ] && [ $selected -le $count ] && [ $selected -ge 1 ]; then
break
fi
done
count=0
for i in $PRESETS "$DIR"/*; do
count=$(expr $count + 1)
if [ $count -eq $selected ]; then
name=$(basename "$i")
break
fi
done
fi
# Get the details of the selected layout
panes=
layout=
if [ -f "$DIR/$name" ]; then
panes=$(head -n1 "$DIR/$name")
layout=$(tail -n1 "$DIR/$name")
else
if [ $current_panes -eq 1 ]; then
panes=4
else
panes=0
fi
layout="$name"
fi
# Create panes if nececessary to restore the layout
while [ $(tmux list-panes | wc -l) -lt $panes ]; do
tmux split-window
tmux select-layout tiled
done
# Finally, restore the layout and refresh
tmux select-layout "$layout"
tmux source "$BYOBU_PREFIX/share/byobu/profiles/tmuxrc"
;;
list)
list_layouts
exit 0
;;
*)
echo "ERROR: Invalid argument, try [save|restore|list]" 2>&1
exit 1
;;
esac
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