common

   1 #!/bin/bash
   2 # (C) 2006-2011 Andre Noll
   3
   4 _gsu_init_errors()
   5 {
   6         gsu_errors="
   7 GSU_SUCCESS                     success
   8 E_GSU_BAD_COMMAND               invalid command
   9 E_GSU_NOT_A_NUMBER              not a number
  10 E_GSU_BAD_CONFIG_VAR            invalid config variable
  11 E_GSU_NEED_VALUE                value required but not given
  12 E_GSU_BAD_BOOL                  bad value for boolian option
  13 E_GSU_BAD_OPTION_TYPE           invalid option type
  14 E_GSU_BAD_ARG_COUNT             invalid number of arguments
  15 E_GSU_EDITOR                    failed to execute editor
  16 E_GSU_MKDIR                     failed to create directory
  17 E_GSU_GETOPTS                   getopts error
  18 E_GSU_DIALOG                    dialog error
  19 E_GSU_MKTEMP                    mktemp error
  20 E_GSU_MENU_TREE                 invalid menu tree
  21 $gsu_errors
  22 "
  23         local a b i=0
  24         while read a b; do
  25                 if test -z "$a"; then
  26                         continue
  27                 fi
  28                 #echo "a:$a,  b: $b"
  29                 gsu_error_txt[i]="$b"
  30                 eval $a=$i
  31                 i=$(($i + 1))
  32         done << EOF
  33         $gsu_errors
  34 EOF
  35 }
  36
  37 # check if $1 is a number
  38 gsu_is_a_number()
  39 {
  40         result="$1"
  41         if (("$1" == "$1")) &> /dev/null; then
  42                 ret=$GSU_SUCCESS
  43         else
  44                 ret=-$E_GSU_NOT_A_NUMBER
  45         fi
  46 }
  47
  48 gsu_short_msg()
  49 {
  50         echo "$1" 1>&2
  51 }
  52
  53 gsu_msg()
  54 {
  55         gsu_short_msg "$gsu_name: $1"
  56 }
  57
  58 gsu_date_msg()
  59 {
  60         gsu_short_msg "$gsu_name $(date): $1"
  61 }
  62
  63 gsu_err_msg()
  64 {
  65         local txt="$result" err
  66
  67         gsu_is_a_number "$ret"
  68         if (($ret < 0)); then
  69                 gsu_msg "unknown error ($ret:$txt)"
  70                 exit 1
  71         fi
  72         if (($result >= 0)); then
  73                 gsu_msg "unknown error ($result:$txt)"
  74                 exit 1
  75         fi
  76         err=$((0 - $result))
  77         if test -n "$txt"; then
  78                 txt="$txt: ${gsu_error_txt[$err]}"
  79         else
  80                 txt="${gsu_error_txt[$err]}"
  81         fi
  82         gsu_msg "$txt"
  83 }
  84
  85 _gsu_setup()
  86 {
  87         gsu_name="${gsu_name:-${0##*/}}"
  88         gsu_config_var_prefix="${gsu_config_var_prefix:=$gsu_name}"
  89         gsu_banner_txt="${gsu_banner_txt:-set \$gsu_banner_txt to customize this message}"
  90         _gsu_init_errors
  91 }