ddc-send

#!/usr/bin/env bash

function num {
    hex=$(printf "%0${2}x\n" $1)
    case $2 in
        4)
            hex="${hex:2:2}${hex:0:2}"
            ;;
        16)
            hex="${hex:14:2}${hex:12:2}${hex:10:2}${hex:8:2}${hex:6:2}${hex:4:2}${hex:2:2}${hex:0:2}"
        ;;
    esac
    >&2 echo "convert: $1 to hex at L $2 half bytes: $hex"
    >&2 echo "$hex" | xxd -r -p | xxd
    echo "$hex"
}

function hex {
    echo -n $1 | xxd -ps
}

function mk_pkg {
    bucket=$1
    key=$2
    value=$3
    >&2 echo "bucket: $bucket"
    >&2 echo "key: $key"
    >&2 echo "value: $value"
    echo -n "$(num ${#bucket} 4)$(hex $bucket)$(num ${#key} 4)$(hex $key)01$(num $value 16)"
}

host=$1
port=$2
bucket=$3
key=$4
value=$5
mk_pkg $bucket $key $value | xxd -r -p | nc -vu $host $port