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scripts/config
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#!/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 |
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--module|-m option Turn option into a module |
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--set-str option string Set option to "string" --set-val option value Set option to value |
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--state|-s option Print state of option (n,y,m,undef) |
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--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. |
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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`" } |
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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 |
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} if [ "$1" = "--file" ]; then FN="$2" if [ "$FN" = "" ] ; then usage fi |
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shift 2 |
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else FN=.config fi |
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if [ "$1" = "" ] ; then usage fi |
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while [ "$1" != "" ] ; do CMD="$1" shift case "$CMD" in |
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--refresh) ;; --*-after) checkarg "$1" A=$ARG checkarg "$2" B=$ARG shift 2 ;; |
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-*) |
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checkarg "$1" |
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shift ;; |
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esac case "$CMD" in --enable|-e) set_var "CONFIG_$ARG" "CONFIG_$ARG=y" ;; |
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--disable|-d) |
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set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set" |
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;; --module|-m) |
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set_var "CONFIG_$ARG" "CONFIG_$ARG=m" |
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;; |
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--set-str) |
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# sed swallows one level of escaping, so we need double-escaping set_var "CONFIG_$ARG" "CONFIG_$ARG=\"${1//\"/\\\\\"}\"" |
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shift ;; |
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--set-val) set_var "CONFIG_$ARG" "CONFIG_$ARG=$1" shift ;; |
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--state|-s) |
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if grep -q "# CONFIG_$ARG is not set" $FN ; then echo n else V="$(grep "^CONFIG_$ARG=" $FN)" if [ $? != 0 ] ; then echo undef else |
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V="${V/#CONFIG_$ARG=/}" V="${V/#\"/}" V="${V/%\"/}" V="${V/\\\"/\"}" echo "${V}" |
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fi fi |
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;; --enable-after|-E) |
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set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A" |
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;; --disable-after|-D) |
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set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A" |
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;; --module-after|-M) |
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set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A" |
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;; # undocumented because it ignores --file (fixme) --refresh) yes "" | make oldconfig ;; *) usage ;; esac done |