hexd

#!/bin/bash

source $PLUG_PATH/cfgs

help_msg() {
    log "
    hexd: hex|ced
    desc: convert hex-to-dec or dec-to-hex
    help: hexd [number]
    args:
        0x<value>                   0x prefix converted to decimal
        <value>                     no prefix converted to hexadecimal
    "
}

prereqs() {
    :
}

hex2dec() {
    [[ ! $1 =~ ^0x[0-9a-fA-F]+$ ]] && err "invalid hexadecimal"
    echo $(( $1 ))
}

dec2hex() {
    [[ ! "$1" =~ ^[0-9]+$ ]] && err "invalid decimal"
    echo "0x"$(printf "%x" $1)
}

options() {
    case $1 in
           0x* ) hex2dec $1;;
        [0-9]* ) dec2hex $1;;
             * ) help_msg;;
    esac
}

init $@