#! /bin/zsh
#
# this file:
#   https://dataswamp.org/~incal/conf/.zsh/vt
#
# To get systemd autologin, put this
#
#   [Service]
#   ExecStart=
#   ExecStart=-/sbin/agetty -a incal --noclear %I $TERM
#
# in
#
#   /etc/systemd/system/getty@tty1.service.d/10-autologin.conf
#
# for each tty where desired, then do
#
#   $ sudo systemctl daemon-reload

sup () {
    sudo systemctl daemon-reload
}

print-char () {
    local chr=$1
    printf "\\u$1\n"
}

all-chars () {
    echo 'this file: https://dataswamp.org/~incal/vt-chars.txt'
    echo '   source: https://dataswamp.org/~incal/conf/.zsh/vt\n'
    all-chars-1; echo
    all-chars-2
    all-chars-3
    all-chars-4
}

all-chars-1 () {
    print -a -C 16 -r {" "..~}
}

all-chars-2 () {
    local beg=${1:-32}
    local end=${2:-127}

    local i
    for i in {$beg..$end}; do
        printf "\\$(printf %03o "$i")"
    done
    echo
}

all-chars-3 () {
    local i
    local tmp
    for (( i=0; i < 256; i++)); do
        printf -v tmp %02x "$i"
        printf "\x$tmp"
    done
    echo
}

all-chars-4 () {
    local i
    local chr
    for (( i=0; i < 512; i++)); do
        printf -v chr %04x $i
        printf "\u${chr}\n" 2> /dev/null
    done
}

print-rep-char () {
    local rc
    printf -v rc %04x 0xfffd
    printf "\u${rc}\n"
}

key () {
    local key=$1
    ascii -t $key | head -n 1 | awk '{print $2}'
}

wake-ttys () {
    local first=$1
    local last=$2

    local t
    for t in {$first..$last}; do
        sleep 10
        chvt $t
    done
}