bin/sd-tool

   1 #!/bin/bash
   2 #
   3 # sd-tool: Helper Tool for systemd
   4 # Copyright (c)2023 Alexander Barton (alex@barton.de)
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11
  12 # Detect our "share" folder ...
  13 unset SHARE_D
  14 for d in . .. /usr/local /usr; do
  15         for s in share share/sd-tool; do
  16                 if [[ -r "${d}/${s}/sd-tool-common.inc.sh" ]]; then
  17                         SHARE_D="${d}/${s}"
  18                         break
  19                 fi
  20         done
  21         [[ -n "${SHARE_D}" ]] && break
  22 done
  23
  24 if [[ -z "${SHARE_D}" || ! -d "${SHARE_D}" ]]; then
  25         echo "Oops, failed to detect \"share\" folder of $0! Aborting!" >&2
  26         exit 1
  27 fi
  28
  29 # shellcheck source=../share/sd-tool-common.inc.sh
  30 if ! . "${SHARE_D}/sd-tool-common.inc.sh"; then
  31         echo "Oops, failed to read \"${SHARE_D}/sd-tool-common.inc.sh\"! Aborting!" >&2
  32         exit 1
  33 fi
  34
  35 # Try to handle a subcommand.
  36 # NOTE: this function does NOT return!
  37 handle_subcommand_and_quit() {
  38         cmd="$1"
  39         cmd_file="${SHARE_D}/sdt-cmd-${cmd}.inc.sh"
  40         shift
  41         if [[ -r "${cmd_file}" ]]; then
  42                 # shellcheck source=../share/sd-tool-common.inc.sh
  43                 if ! . "${cmd_file}"; then
  44                         printf "Oops, failed to read \"%s\"! Aborting!\n" "${cmd_file}" >&2
  45                         exit 1
  46                 fi
  47                 # Call command:
  48                 sdt_cmd_"${cmd}" "$@"
  49                 exit $?
  50         else
  51                 if [[ -n "${cmd}" ]]; then
  52                         printf "Unknown subcommand \"%s\"! Available commands are:\n\n" "${cmd}" >&2
  53                 else
  54                         printf "No subcommand given! Available commands are:\n\n" >&2
  55                 fi
  56                 sdt_commands
  57                 exit 2
  58         fi
  59 }
  60
  61 while true; do
  62         case "$1" in
  63                 "--help")
  64                         sdt_version
  65                         sdt_usage
  66                         exit 0
  67                         ;;
  68                 "--quiet"|"-q")
  69                         unset VERBOSE
  70                         export QUIET=1
  71                         ;;
  72                 "--verbose"|"-v")
  73                         unset QUIET
  74                         export VERBOSE=1
  75                         ;;
  76                 "--version"|"-V")
  77                         sdt_version
  78                         exit 0
  79                         ;;
  80                 "-*")
  81                         printf "Unknown option \"%s\"!\n" "$1" >&2
  82                         exit 2
  83                         ;;
  84                 *)
  85                         # Subcommand?
  86                         handle_subcommand_and_quit "$@"
  87         esac
  88         shift
  89 done
  90 exit 1