git.sur5r.net Git - kconfig-frontends/blob - utils/tweak

   1 #!/bin/bash
   2 # Manipulate options in a .config file from the command line
   3
   4 usage() {
   5         cat >&2 <<EOL
   6 Manipulate options in a .config file from the command line.
   7 Usage:
   8 config options command ...
   9 commands:
  10         --enable|-e option   Enable option
  11         --disable|-d option  Disable option
  12         --module|-m option   Turn option into a module
  13         --set-str option string
  14                              Set option to "string"
  15         --set-val option value
  16                              Set option to value
  17         --state|-s option    Print state of option (n,y,m,undef)
  18
  19         --enable-after|-E beforeopt option
  20                              Enable option directly after other option
  21         --disable-after|-D beforeopt option
  22                              Disable option directly after other option
  23         --module-after|-M beforeopt option
  24                              Turn option into module directly after other option
  25
  26         commands can be repeated multiple times
  27
  28 options:
  29         --file .config file to change (default .config)
  30
  31 config doesn't check the validity of the .config file. This is done at next
  32  make time.
  33 EOL
  34         exit 1
  35 }
  36
  37 checkarg() {
  38         ARG="$1"
  39         if [ "$ARG" = "" ] ; then
  40                 usage
  41         fi
  42         case "$ARG" in
  43         CONFIG_*)
  44                 ARG="${ARG/CONFIG_/}"
  45                 ;;
  46         esac
  47 }
  48
  49 set_var() {
  50         local name=$1 new=$2 before=$3
  51
  52         name_re="^($name=|# $name is not set)"
  53         before_re="^($before=|# $before is not set)"
  54         if test -n "$before" && grep -Eq "$before_re" "$FN"; then
  55                 sed -ri "/$before_re/a $new" "$FN"
  56         elif grep -Eq "$name_re" "$FN"; then
  57                 sed -ri "s:$name_re.*:$new:" "$FN"
  58         else
  59                 echo "$new" >>"$FN"
  60         fi
  61 }
  62
  63 if [ "$1" = "--file" ]; then
  64         FN="$2"
  65         if [ "$FN" = "" ] ; then
  66                 usage
  67         fi
  68         shift 2
  69 else
  70         FN=.config
  71 fi
  72
  73 if [ "$1" = "" ] ; then
  74         usage
  75 fi
  76
  77 while [ "$1" != "" ] ; do
  78         CMD="$1"
  79         shift
  80         case "$CMD" in
  81         --refresh)
  82                 ;;
  83         --*-after)
  84                 checkarg "$1"
  85                 A=$ARG
  86                 checkarg "$2"
  87                 B=$ARG
  88                 shift 2
  89                 ;;
  90         -*)
  91                 checkarg "$1"
  92                 shift
  93                 ;;
  94         esac
  95         case "$CMD" in
  96         --enable|-e)
  97                 set_var "CONFIG_$ARG" "CONFIG_$ARG=y"
  98                 ;;
  99
 100         --disable|-d)
 101                 set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set"
 102                 ;;
 103
 104         --module|-m)
 105                 set_var "CONFIG_$ARG" "CONFIG_$ARG=m"
 106                 ;;
 107
 108         --set-str)
 109                 # sed swallows one level of escaping, so we need double-escaping
 110                 set_var "CONFIG_$ARG" "CONFIG_$ARG=\"${1//\"/\\\\\"}\""
 111                 shift
 112                 ;;
 113
 114         --set-val)
 115                 set_var "CONFIG_$ARG" "CONFIG_$ARG=$1"
 116                 shift
 117                 ;;
 118
 119         --state|-s)
 120                 if grep -q "# CONFIG_$ARG is not set" $FN ; then
 121                         echo n
 122                 else
 123                         V="$(grep "^CONFIG_$ARG=" $FN)"
 124                         if [ $? != 0 ] ; then
 125                                 echo undef
 126                         else
 127                                 V="${V/#CONFIG_$ARG=/}"
 128                                 V="${V/#\"/}"
 129                                 V="${V/%\"/}"
 130                                 V="${V/\\\"/\"}"
 131                                 echo "${V}"
 132                         fi
 133                 fi
 134                 ;;
 135
 136         --enable-after|-E)
 137                 set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A"
 138                 ;;
 139
 140         --disable-after|-D)
 141                 set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A"
 142                 ;;
 143
 144         --module-after|-M)
 145                 set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A"
 146                 ;;
 147
 148         # undocumented because it ignores --file (fixme)
 149         --refresh)
 150                 yes "" | make oldconfig
 151                 ;;
 152
 153         *)
 154                 usage
 155                 ;;
 156         esac
 157 done
 158