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#!/usr/bin/env bash
#
# Clipboard menu
#
# usage:
# clipboard init - clear all buffers
# clipboard menu_paste - pop up a menu to select which buffer to paste
# clipboard menu_set - pop up a menu to select which buffer to save
# the current X selection to
# clipboard paste N - N is buffer 1-9
# clipboard set N - N is buffer 1-9
# clipboard push - stack/queue push (push to buffer 1)
# clipboard pop - stack pop (last in first out - pop from buffer 1)
# clipboard pop_queue - queue pop (first in first out - pop from top of stack)
#
# Current stack depth is held in slot 10, and slot 0 is used as temp space for
# stack rotation.
#
command=$1
option=$2
function entries() {
# title entry
if [ $command = menu_paste ]; then
echo -n "\"Paste from slot:\" /bin/true "
else
echo -n "\"Yank from slot:\" /bin/true "
fi
for i in $(seq 1 9); do
repr=$(xcb -p $i | tr '\n$*?"'\''' ' ' | cut --bytes 0-59)
if [ $command = menu_paste ]; then
cmd_item="$0 paste $i"
else
cmd_item="$0 set $i"
fi
#printf '%q %q ' $i "$repr" "$cmd_item"
echo -n "\"$i $repr\" \"$cmd_item\" "
done
}
function menu() {
echo ratmenu -label "\"clipboard $command\"" \
-style dreary -fg \'#657b83\' -bg \'#eee8d5\' -io 2 $(entries) | sh
}
function get_stack_depth() {
stack_depth=$(xcb -p 10)
echo "stack_depth=$stack_depth" >/dev/stderr
}
function set_stack_depth() {
echo "setting stack_depth=$1" >/dev/stderr
echo $1 | xcb -n 11 -s 10
}
function increment_stack_depth() {
get_stack_depth
set_stack_depth $[ $stack_depth + 1 ]
}
function decrement_stack_depth() {
get_stack_depth
set_stack_depth $[ $stack_depth - 1 ]
}
if [ $command = init ]; then
# Clear all buffers
xcb -n 10 -s 0-9 </dev/null
set_stack_depth 0
elif [ $command = menu_paste -o $command = menu_set ]; then
menu
elif [ $command = paste ]; then
xcb -p $option | xclip
ratpoison -c "meta S-Insert"
elif [ $command = set ]; then
xcb -n 10 -S $option
elif [ $command = push ]; then
get_stack_depth
if [ $stack_depth -lt 9 ]; then
xcb -n 10 -r 1
$0 set 1
increment_stack_depth
fi
elif [ $command = pop ]; then
get_stack_depth
if [ $stack_depth -gt 0 ]; then
$0 paste 1
# Clear buffer 0 so that rotation won't put its contents into spot 9
xcb -n 10 -s 0 < /dev/null
xcb -n 10 -r -1
decrement_stack_depth
fi
elif [ $command = pop_queue ]; then
get_stack_depth
if [ $stack_depth -gt 0 ]; then
$0 paste $stack_depth
# Clear buffer at top of stack
xcb -n 10 -s $stack_depth < /dev/null
decrement_stack_depth
fi
fi
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