dlimg

#!/bin/bash
# Copyright (c) 2024 Osamu Aoki <osamu@debian.org>
# GNU GPL 2+

VERSION='0.0.1'

help() {
  cat - << EOF
Usage: ${0##*/} [options]

OPTION:
  -n              no download
  -a  [am|ar]     set extention type of downloaded data
      amd64 (default), arm64
  -c  [s|b|t]     set codename and release of downloaded data
      sid (default), bookworm, trixie
  -i  [n|g|c|a|e] set image name of downloaded data
      nocloud (default), generic, genericcloud, azure, ec2
  -e  [j|q|r|t]   set extention type of downloaded data
      json (default), qcow2, raw, tar.xz
  -h              show help message

This is ${0##*/} version $VERSION .

NOTE:

Difference of image names

* azure:        Microsoft Azure environment
* ec2:          Amazon EC2
* generic:      Any, with cloud-init
* genericcloud: Any, with cloud-init, w/o hardware drivers
* nocloud       Any, with password-less root login for build process

EOF
}

REPO_URL="https://cloud.debian.org/images/cloud"
CODEIMAGE="sid"
REPO_PATH="daily/latest"
DIST="debian"
RELEASE="sid"
IMAGE="nocloud"
ARCH="amd64"
SUFFIX="daily"
EXT="json"
ECHO=""

while [ $# != 0 ]; do
  case $1 in
    -a) # ARCH
      shift
      case $1 in
        am*)
          shift
          ARCH="amd64"
          ;;
        ar*)
          shift
          ARCH="arm64"
          ;;
        *) ;;
      esac
      ;;
    -c) # CODEIMAGE/RELEASE
      shift
      case $1 in
        b* | 12)
          shift
          CODEIMAGE="bookworm"
          RELEASE="12"
          ;;

        t* | 13)
          shift
          CODEIMAGE="trixie"
          RELEASE="13"
          ;;
        s*)
          shift
          CODEIMAGE="sid"
          RELEASE="sid"
          ;;
        *) ;;
      esac
      ;;
    -i) # IMAGE
      shift
      case $1 in
        a*)
          shift
          IMAGE="azure"
          ;;
        e*)
          shift
          IMAGE="ec2"
          ;;
        g*)
          shift
          IMAGE="generic"
          ;;
        c*)
          shift
          IMAGE="genericcloud"
          ;;
        n*)
          shift
          IMAGE="nocloud"
          ;;
        *) ;;
      esac
      ;;
    -e) # EXTENSION
      shift
      case $1 in
        j*)
          shift
          EXT="json"
          ;;
        q*)
          shift
          EXT="qcow2"
          ;;
        r*)
          shift
          EXT="raw"
          ;;
        t*)
          shift
          EXT="tar.gz"
          ;;
        *) ;;
      esac
      ;;
    -n)
      shift
      ECHO="echo"
      ;;
    -h)
      help
      shift
      exit 0
      ;;
    *)
      break
      ;;
  esac
done

$ECHO wget ${REPO_URL}/${CODEIMAGE}/${REPO_PATH}/${DIST}-${RELEASE}-${IMAGE}-${ARCH}-${SUFFIX}.${EXT}

# vim: set sts=2 sw=2 et si ai: