#!/bin/sh

set -euo pipefail

if [ "$#" = 0 ]; then
    echo "Usage: $0 [passwords...] | $0 - < passwords.txt" >&2
    exit 1
fi

if [ "$1" = '-' ]; then
    xargs -x -n1 -d'\n' htpasswd -bnBC 10 "" | tr -d ':' | sed '/^$/d'
else
    for pass in "$@"; do
        htpasswd -bnBC 10 "" "$pass" | tr -d ':' | sed '/^$/d'
    done
fi