iankelling.org Git - automated-distro-installer/blob - fai/config/class/40-parse-profiles.sh

   1 #! /bin/bash
   2
   3 # parse *.profile and build a curses menu, so the user can select a profile
   4 #
   5 # (c) 2015 by Thomas Lange, lange@cs.uni-koeln.de
   6 # Universitaet zu Koeln
   7
   8 if [ X$FAI_ACTION = Xinstall -o X$FAI_ACTION = Xdirinstall -o X$FAI_ACTION = X ]; then
   9     :
  10 else
  11     return 0
  12 fi
  13
  14 [ "$flag_menu" ] || return 0
  15
  16 out=$(tty)
  17 # save stdout and redirect stdout to tty
  18 exec 4>&1 > $out
  19 tempfile=$(mktemp)
  20 tempfile2=$(mktemp)
  21 trap "rm -f $tempfile $tempfile2" EXIT INT QUIT
  22
  23 # declare the data structure, use associative arrays
  24 declare -A arshort
  25 declare -A ardesc
  26 declare -A arlong
  27 declare -A arclasses
  28 declare -a list
  29
  30
  31 parse_profile() {
  32
  33     # read a profile and add all info to the data structure
  34
  35     local short
  36     local long
  37     local desc
  38     local name
  39     local classes
  40     local lflag=0
  41
  42     # disable word splitting when reading a line, this helps reading a keyword without a value
  43     local OIF=$IFS
  44     IFS=
  45
  46     while read -r line || [[ -n $line ]]; do
  47
  48         if [[ $line =~ "Name: " ]]; then
  49             if [ -n "$long" ]; then
  50                 arlong[$name]="$long"
  51             fi
  52             short=
  53             desc=
  54             long=
  55             classes=
  56             lflag=0
  57             name=${line##Name: }
  58             [ $debug ] && echo "XX NAME $name found"
  59             list+=("$name")  # add new item to list
  60             continue
  61         fi
  62
  63         if [[ $line =~ "Description: " ]]; then
  64             lflag=0
  65             desc=${line##Description: }
  66             [ $debug ] && echo "XX $desc found"
  67             ardesc[$name]="$desc"
  68             continue
  69         fi
  70
  71         if [[ $line =~ "Short: " ]]; then
  72             lflag=0
  73             short=${line##Short: }
  74             [ $debug ] && echo "XX $short found"
  75             arshort[$name]="$short"
  76             continue
  77         fi
  78
  79         if [[ $line =~ "Classes: " ]]; then
  80             lflag=0
  81             classes=${line##Classes: }
  82             [ $debug ] && echo "XX classes found"
  83             arclasses[$name]="$classes"
  84             continue
  85         fi
  86
  87         if [[ $line =~ "Long: " ]]; then
  88             lflag=1
  89             long=${line##Long: }
  90             [ $debug ] && echo "XX long found"
  91
  92         # else it's another long line
  93         elif [ $lflag -eq 1 ]; then
  94             long+="\n$line"
  95         fi
  96
  97         if [[ $line =~ "Default: " ]]; then
  98             lflag=0
  99             default=${line##Default: }
 100             continue
 101         fi
 102
 103     done < $1
 104
 105     if [ -n "$long" ]; then
 106         arlong[$name]="$long"
 107     fi
 108     IFS=$OIF
 109 }
 110
 111 prtresult() {
 112
 113     # set newclasses which is used by fai-class(1)
 114     local res=$(<$tempfile)
 115     echo "$BASH_SOURCE defined new classes: ${arclasses[$res]}"
 116     newclasses="${arclasses[$res]}"
 117 }
 118
 119
 120 # read all files with name matching *.profile
 121 _parsed=0
 122 shopt -s nullglob
 123 for _f in *.profile; do
 124     parse_profile $_f
 125     _parsed=1
 126 done
 127 unset _f
 128
 129 # do nothing if no profile was read
 130 if [ $_parsed -eq 0 ]; then
 131     unset _parsed
 132     return 0
 133 fi
 134
 135 # create the argument list containing the menu entries
 136 # and the help text file
 137 for i in "${list[@]}"; do
 138     par+=("$i")
 139     par+=("${ardesc[${i}]}")
 140     par+=("${arshort[${i}]}")
 141     echo "Name: ${i}" >> $tempfile2
 142     echo -e ${arlong[${i}]} >> $tempfile2
 143     echo -e "Classes: " ${arclasses[${i}]} "\n" >> $tempfile2
 144 done
 145 unset i
 146
 147 while true; do
 148
 149     dialog --clear --item-help --title "FAI - Fully Automatic Installation" --help-button \
 150         --default-item "$default" \
 151         --menu "\nSelect your FAI profile\n\nThe profile will define a list of classes,\nwhich are used by FAI.\n\n\n"\
 152         15 70 0 "${par[@]}" 2> $tempfile
 153     _retval=$?
 154     case $_retval in
 155         0)
 156             prtresult
 157             break ;;
 158         1)
 159             echo "No profile selected."
 160             break ;;
 161         2)
 162             dialog --title "Description of all profiles" --textbox $tempfile2 0 0 ;;
 163     esac
 164
 165 done
 166 unset par ardesc arshort arlong arclasses list tempfile tempfile2 _parsed _retval line
 167
 168 exec 1>&4 # restore stdout