common

   1 #!/bin/bash
   2 # Copyright (C) 2006 Andre Noll
   3 # Licensed under the LGPL, version 3. See COPYING and COPYING.LESSER.
   4
   5 _gsu_init_errors()
   6 {
   7         gsu_errors="
   8 GSU_SUCCESS                     success
   9 E_GSU_BAD_COMMAND               invalid command
  10 E_GSU_NOT_A_NUMBER              not a number
  11 E_GSU_BAD_CONFIG_VAR            invalid config variable
  12 E_GSU_NEED_VALUE                value required but not given
  13 E_GSU_BAD_BOOL                  bad value for boolian option
  14 E_GSU_BAD_OPTION_TYPE           invalid option type
  15 E_GSU_BAD_ARG_COUNT             invalid number of arguments
  16 E_GSU_EDITOR                    failed to execute editor
  17 E_GSU_MKDIR                     failed to create directory
  18 E_GSU_GETOPTS                   getopts error
  19 E_GSU_DIALOG                    dialog error
  20 E_GSU_MKTEMP                    mktemp error
  21 E_GSU_MENU_TREE                 invalid menu tree
  22 $gsu_errors
  23 "
  24         local a b i=0
  25         while read a b; do
  26                 if test -z "$a"; then
  27                         continue
  28                 fi
  29                 #echo "a:$a,  b: $b"
  30                 gsu_error_txt[i]="$b"
  31                 eval $a=$i
  32                 i=$(($i + 1))
  33         done << EOF
  34         $gsu_errors
  35 EOF
  36 }
  37
  38 # check if $1 is a number
  39 gsu_is_a_number()
  40 {
  41         result="$1"
  42         if (("$1" == "$1")) &> /dev/null; then
  43                 ret=$GSU_SUCCESS
  44         else
  45                 ret=-$E_GSU_NOT_A_NUMBER
  46         fi
  47 }
  48
  49 gsu_short_msg()
  50 {
  51         echo "$1" 1>&2
  52 }
  53
  54 gsu_msg()
  55 {
  56         gsu_short_msg "$gsu_name: $1"
  57 }
  58
  59 gsu_date_msg()
  60 {
  61         gsu_short_msg "$gsu_name $(date): $1"
  62 }
  63
  64 gsu_err_msg()
  65 {
  66         local txt="$result" err
  67
  68         gsu_is_a_number "$ret"
  69         if (($ret < 0)); then
  70                 gsu_msg "unknown error ($ret:$txt)"
  71                 exit 1
  72         fi
  73         if (($result >= 0)); then
  74                 gsu_msg "unknown error ($result:$txt)"
  75                 exit 1
  76         fi
  77         err=$((0 - $result))
  78         if test -n "$txt"; then
  79                 txt="$txt: ${gsu_error_txt[$err]}"
  80         else
  81                 txt="${gsu_error_txt[$err]}"
  82         fi
  83         gsu_msg "$txt"
  84 }
  85
  86 _gsu_setup()
  87 {
  88         gsu_name="${gsu_name:-${0##*/}}"
  89         gsu_config_var_prefix="${gsu_config_var_prefix:=$gsu_name}"
  90         gsu_banner_txt="${gsu_banner_txt:-set \$gsu_banner_txt to customize this message}"
  91         _gsu_init_errors
  92 }