misc: add script to manipulate .config from cmdline

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff --git a/misc/config b/misc/config
new file mode 100755 (executable)
index 0000000..a7c7c4b
--- /dev/null
+++ b/misc/config
@@ -0,0 +1,156 @@
+#!/bin/bash
+# Manipulate options in a .config file from the command line
+
+usage() {
+       cat >&2 <<EOL
+Manipulate options in a .config file from the command line.
+Usage:
+config options command ...
+commands:
+       --enable|-e option   Enable option
+       --disable|-d option  Disable option
+       --module|-m option   Turn option into a module
+       --set-str option string
+                            Set option to "string"
+       --set-val option value
+                            Set option to value
+       --state|-s option    Print state of option (n,y,m,undef)
+
+       --enable-after|-E beforeopt option
+                             Enable option directly after other option
+       --disable-after|-D beforeopt option
+                             Disable option directly after other option
+       --module-after|-M beforeopt option
+                             Turn option into module directly after other option
+
+       commands can be repeated multiple times
+
+options:
+       --file .config file to change (default .config)
+
+config doesn't check the validity of the .config file. This is done at next
+ make time.
+EOL
+       exit 1
+}
+
+checkarg() {
+       ARG="$1"
+       if [ "$ARG" = "" ] ; then
+               usage
+       fi
+       case "$ARG" in
+       CONFIG_*)
+               ARG="${ARG/CONFIG_/}"
+               ;;
+       esac
+       ARG="`echo $ARG | tr a-z A-Z`"
+}
+
+set_var() {
+       local name=$1 new=$2 before=$3
+
+       name_re="^($name=|# $name is not set)"
+       before_re="^($before=|# $before is not set)"
+       if test -n "$before" && grep -Eq "$before_re" "$FN"; then
+               sed -ri "/$before_re/a $new" "$FN"
+       elif grep -Eq "$name_re" "$FN"; then
+               sed -ri "s:$name_re.*:$new:" "$FN"
+       else
+               echo "$new" >>"$FN"
+       fi
+}
+
+if [ "$1" = "--file" ]; then
+       FN="$2"
+       if [ "$FN" = "" ] ; then
+               usage
+       fi
+       shift 2
+else
+       FN=.config
+fi
+
+if [ "$1" = "" ] ; then
+       usage
+fi
+
+while [ "$1" != "" ] ; do
+       CMD="$1"
+       shift
+       case "$CMD" in
+       --refresh)
+               ;;
+       --*-after)
+               checkarg "$1"
+               A=$ARG
+               checkarg "$2"
+               B=$ARG
+               shift 2
+               ;;
+       -*)
+               checkarg "$1"
+               shift
+               ;;
+       esac
+       case "$CMD" in
+       --enable|-e)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=y"
+               ;;
+
+       --disable|-d)
+               set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set"
+               ;;
+
+       --module|-m)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=m"
+               ;;
+
+       --set-str)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=\"$1\""
+               shift
+               ;;
+
+       --set-val)
+               set_var "CONFIG_$ARG" "CONFIG_$ARG=$1"
+               shift
+               ;;
+
+       --state|-s)
+               if grep -q "# CONFIG_$ARG is not set" $FN ; then
+                       echo n
+               else
+                       V="$(grep "^CONFIG_$ARG=" $FN)"
+                       if [ $? != 0 ] ; then
+                               echo undef
+                       else
+                               V="${V/CONFIG_$ARG=/}"
+                               V="${V/\"/}"
+                               echo "$V"
+                       fi
+               fi
+               ;;
+
+       --enable-after|-E)
+               set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A"
+               ;;
+
+       --disable-after|-D)
+               set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A"
+               ;;
+
+       --module-after|-M)
+               set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A"
+               ;;
+
+       # undocumented because it ignores --file (fixme)
+       --refresh)
+               yes "" | make oldconfig
+               ;;
+
+       *)
+               usage
+               ;;
+       esac
+done
+

diff --git a/misc/kernel2kfrontends.list b/misc/kernel2kfrontends.list
index 5c49ea1d3f69b4cbb86f3a5663bbd7d91b3a2f6c..3fed3fcc33366321451b34ee295cf3e7bdbeddf4 100644 (file)
--- a/misc/kernel2kfrontends.list
+++ b/misc/kernel2kfrontends.list
@@ -27,6 +27,7 @@ scripts/kconfig/menu.c                            -->  libs/parser/menu.c
 scripts/kconfig/symbol.c                          -->  libs/parser/symbol.c
 scripts/kconfig/util.c                            -->  libs/parser/util.c
 scripts/kconfig/zconf.y                           -->  libs/parser/yconf.y
+scripts/config                                    -->  misc/config
 scripts/diffconfig                                -->  misc/diffconfig
 scripts/kconfig/kxgettext.c                       -->  misc/kxgettext.c
 scripts/kconfig/merge_config.sh                   -->  misc/merge_config.sh