diff options
Diffstat (limited to 'scripts/config')
| -rwxr-xr-x | scripts/config | 128 |
1 files changed, 102 insertions, 26 deletions
diff --git a/scripts/config b/scripts/config index 608d7fdb13e..026aeb4f32e 100755 --- a/scripts/config +++ b/scripts/config @@ -1,17 +1,25 @@ #!/bin/bash # Manipulate options in a .config file from the command line +myname=${0##*/} + +# If no prefix forced, use the default CONFIG_ +CONFIG_="${CONFIG_-CONFIG_}" + usage() { cat >&2 <<EOL Manipulate options in a .config file from the command line. Usage: -config options command ... +$myname options command ... commands: --enable|-e option Enable option --disable|-d option Disable option --module|-m option Turn option into a module - --set-str option value - Set option to "value" + --set-str option string + Set option to "string" + --set-val option value + Set option to value + --undefine|-u option Undefine option --state|-s option Print state of option (n,y,m,undef) --enable-after|-E beforeopt option @@ -24,10 +32,17 @@ commands: commands can be repeated multiple times options: - --file .config file to change (default .config) + --file config-file .config file to change (default .config) + --keep-case|-k Keep next symbols' case (dont' upper-case it) + +$myname doesn't check the validity of the .config file. This is done at next +make time. -config doesn't check the validity of the .config file. This is done at next - make time. +By default, $myname will upper-case the given symbol. Use --keep-case to keep +the case of all following symbols unchanged. + +$myname uses 'CONFIG_' as the default symbol prefix. Set the environment +variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ... EOL exit 1 } @@ -38,11 +53,48 @@ checkarg() { usage fi case "$ARG" in - CONFIG_*) - ARG="${ARG/CONFIG_/}" + ${CONFIG_}*) + ARG="${ARG/${CONFIG_}/}" ;; esac - ARG="`echo $ARG | tr a-z A-Z`" + if [ "$MUNGE_CASE" = "yes" ] ; then + ARG="`echo $ARG | tr a-z A-Z`" + fi +} + +txt_append() { + local anchor="$1" + local insert="$2" + local infile="$3" + local tmpfile="$infile.swp" + + # sed append cmd: 'a\' + newline + text + newline + cmd="$(printf "a\\%b$insert" "\n")" + + sed -e "/$anchor/$cmd" "$infile" >"$tmpfile" + # replace original file with the edited one + mv "$tmpfile" "$infile" +} + +txt_subst() { + local before="$1" + local after="$2" + local infile="$3" + local tmpfile="$infile.swp" + + sed -e "s:$before:$after:" "$infile" >"$tmpfile" + # replace original file with the edited one + mv "$tmpfile" "$infile" +} + +txt_delete() { + local text="$1" + local infile="$2" + local tmpfile="$infile.swp" + + sed -e "/$text/d" "$infile" >"$tmpfile" + # replace original file with the edited one + mv "$tmpfile" "$infile" } set_var() { @@ -51,14 +103,23 @@ set_var() { name_re="^($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" + txt_append "^$before=" "$new" "$FN" + txt_append "^# $before is not set" "$new" "$FN" elif grep -Eq "$name_re" "$FN"; then - sed -ri "s:$name_re.*:$new:" "$FN" + txt_subst "^$name=.*" "$new" "$FN" + txt_subst "^# $name is not set" "$new" "$FN" else echo "$new" >>"$FN" fi } +undef_var() { + local name=$1 + + txt_delete "^$name=" "$FN" + txt_delete "^# $name is not set" "$FN" +} + if [ "$1" = "--file" ]; then FN="$2" if [ "$FN" = "" ] ; then @@ -73,67 +134,83 @@ if [ "$1" = "" ] ; then usage fi +MUNGE_CASE=yes while [ "$1" != "" ] ; do CMD="$1" shift case "$CMD" in + --keep-case|-k) + MUNGE_CASE=no + continue + ;; --refresh) ;; - --*-after) + --*-after|-E|-D|-M) 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" + set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y" ;; --disable|-d) - set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set" + set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set" ;; --module|-m) - set_var "CONFIG_$ARG" "CONFIG_$ARG=m" + set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m" ;; --set-str) - set_var "CONFIG_$ARG" "CONFIG_$ARG=\"$1\"" + # sed swallows one level of escaping, so we need double-escaping + set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\"" + shift + ;; + + --set-val) + set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1" shift ;; + --undefine|-u) + undef_var "${CONFIG_}$ARG" + ;; --state|-s) - if grep -q "# CONFIG_$ARG is not set" $FN ; then + if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then echo n else - V="$(grep "^CONFIG_$ARG=" $FN)" + V="$(grep "^${CONFIG_}$ARG=" $FN)" if [ $? != 0 ] ; then echo undef else - V="${V/CONFIG_$ARG=/}" - V="${V/\"/}" - echo "$V" + V="${V/#${CONFIG_}$ARG=/}" + V="${V/#\"/}" + V="${V/%\"/}" + V="${V//\\\"/\"}" + echo "${V}" fi fi ;; --enable-after|-E) - set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A" + set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A" ;; --disable-after|-D) - set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A" + set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A" ;; --module-after|-M) - set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A" + set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A" ;; # undocumented because it ignores --file (fixme) @@ -146,4 +223,3 @@ while [ "$1" != "" ] ; do ;; esac done - |