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

   1 #!/bin/bash
   2 # Manipulate options in a .config file from the command line
   3
   4 CONFIG_="@CONFIG_@"
   5
   6 usage() {
   7         cat >&2 <<EOL
   8 Manipulate options in a .config file from the command line.
   9 Usage:
  10 config options command ...
  11 commands:
  12         --enable|-e option   Enable option
  13         --disable|-d option  Disable option
  14         --module|-m option   Turn option into a module
  15         --set-str option string
  16                              Set option to "string"
  17         --set-val option value
  18                              Set option to value
  19         --state|-s option    Print state of option (n,y,m,undef)
  20
  21         --enable-after|-E beforeopt option
  22                              Enable option directly after other option
  23         --disable-after|-D beforeopt option
  24                              Disable option directly after other option
  25         --module-after|-M beforeopt option
  26                              Turn option into module directly after other option
  27
  28         commands can be repeated multiple times
  29
  30 options:
  31         --file .config file to change (default .config)
  32
  33 config doesn't check the validity of the .config file. This is done at next
  34  make time.
  35 EOL
  36         exit 1
  37 }
  38
  39 checkarg() {
  40         ARG="$1"
  41         if [ "$ARG" = "" ] ; then
  42                 usage
  43         fi
  44         case "$ARG" in
  45         ${CONFIG_}*)
  46                 ARG="${ARG/${CONFIG_}/}"
  47                 ;;
  48         esac
  49 }
  50
  51 set_var() {
  52         local name=$1 new=$2 before=$3
  53
  54         name_re="^($name=|# $name is not set)"
  55         before_re="^($before=|# $before is not set)"
  56         if test -n "$before" && grep -Eq "$before_re" "$FN"; then
  57                 sed -ri "/$before_re/a $new" "$FN"
  58         elif grep -Eq "$name_re" "$FN"; then
  59                 sed -ri "s:$name_re.*:$new:" "$FN"
  60         else
  61                 echo "$new" >>"$FN"
  62         fi
  63 }
  64
  65 if [ "$1" = "--file" ]; then
  66         FN="$2"
  67         if [ "$FN" = "" ] ; then
  68                 usage
  69         fi
  70         shift 2
  71 else
  72         FN=.config
  73 fi
  74
  75 if [ "$1" = "" ] ; then
  76         usage
  77 fi
  78
  79 while [ "$1" != "" ] ; do
  80         CMD="$1"
  81         shift
  82         case "$CMD" in
  83         --refresh)
  84                 ;;
  85         --*-after)
  86                 checkarg "$1"
  87                 A=$ARG
  88                 checkarg "$2"
  89                 B=$ARG
  90                 shift 2
  91                 ;;
  92         -*)
  93                 checkarg "$1"
  94                 shift
  95                 ;;
  96         esac
  97         case "$CMD" in
  98         --enable|-e)
  99                 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y"
 100                 ;;
 101
 102         --disable|-d)
 103                 set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set"
 104                 ;;
 105
 106         --module|-m)
 107                 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m"
 108                 ;;
 109
 110         --set-str)
 111                 # sed swallows one level of escaping, so we need double-escaping
 112                 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\""
 113                 shift
 114                 ;;
 115
 116         --set-val)
 117                 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
 118                 shift
 119                 ;;
 120
 121         --state|-s)
 122                 if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then
 123                         echo n
 124                 else
 125                         V="$(grep "^${CONFIG_}$ARG=" $FN)"
 126                         if [ $? != 0 ] ; then
 127                                 echo undef
 128                         else
 129                                 V="${V/#${CONFIG_}$ARG=/}"
 130                                 V="${V/#\"/}"
 131                                 V="${V/%\"/}"
 132                                 V="${V/\\\"/\"}"
 133                                 echo "${V}"
 134                         fi
 135                 fi
 136                 ;;
 137
 138         --enable-after|-E)
 139                 set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A"
 140                 ;;
 141
 142         --disable-after|-D)
 143                 set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A"
 144                 ;;
 145
 146         --module-after|-M)
 147                 set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A"
 148                 ;;
 149
 150         # undocumented because it ignores --file (fixme)
 151         --refresh)
 152                 yes "" | make oldconfig
 153                 ;;
 154
 155         *)
 156                 usage
 157                 ;;
 158         esac
 159 done
 160