qrencode_clipboard

#!/bin/bash
# Assign a global hotkey to run this script.

die() {
    echo "$*" >&2
    [ -t 2 ] || notify-send "$(basename "$0")" "$1" --icon=dialog-error
    exit 1
}

notify() {
    local text
    text=$(echo "$1" | head -c420 | head -n10 | iconv -f utf-8 -t utf-8 -c) # truncate text for notification
    if [ "${#text}" -lt "$len" ]; then
        text="${text} ..."
    fi
    notify-send -- "QR Code - Clipboard Content" "$text"
}

read_wayland() {
    wl-paste -n
}

read_xorg() {
    xclip -selection clipboard -o
}

if [ -n "$WAYLAND_DISPLAY" ]; then
    content=$(read_wayland) || die 'Failed to read Wayland clipboard'
elif [ -n "$DISPLAY" ]; then
    content=$(read_xorg) || die 'Failed to read Xorg clipboard'
else
    die "Neither $$DISPLAY nor $$WAYLAND_DISPLAY is set"
fi

len=${#content}
[ "$len" -le 0 ] && die 'Clipboard is empty'
[ "$len" -gt 2951 ] && die 'Clipboard content is too long'

notify "$content"
echo -n "$content" | qrencode -l L -s 6 -t png -o - | feh - || die 'Failed to create QR Code'