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-rwxr-xr-xscripts/config189
1 files changed, 130 insertions, 59 deletions
diff --git a/scripts/config b/scripts/config
index db6084b78a1..026aeb4f32e 100755
--- a/scripts/config
+++ b/scripts/config
@@ -1,16 +1,26 @@
#!/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 ...
+$myname options command ...
commands:
--enable|-e option Enable option
--disable|-d option Disable option
- --module|-m option Turn option into a module
- --state|-s option Print state of option (n,y,m,undef)
+ --module|-m option Turn option into a module
+ --set-str option string
+ Set option to "string"
+ --set-val option value
+ Set option to value
+ --undefine|-u option Undefine option
+ --state|-s option Print state of option (n,y,m,undef)
--enable-after|-E beforeopt option
Enable option directly after other option
@@ -22,12 +32,17 @@ commands:
commands can be repeated multiple times
options:
- --file .config file to change (default .config)
+ --file config-file .config file to change (default .config)
+ --keep-case|-k Keep next symbols' case (dont' upper-case it)
+
+$myname doesn't check the validity of the .config file. This is done at next
+make time.
+
+By default, $myname will upper-case the given symbol. Use --keep-case to keep
+the case of all following symbols unchanged.
-config doesn't check the validity of the .config file. This is done at next
- make time.
-The options need to be already in the file before they can be changed,
-but sometimes you can cheat with the --*-after options.
+$myname uses 'CONFIG_' as the default symbol prefix. Set the environment
+variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ...
EOL
exit 1
}
@@ -38,15 +53,71 @@ checkarg() {
usage
fi
case "$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() {
+ 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
+ txt_append "^$before=" "$new" "$FN"
+ txt_append "^# $before is not set" "$new" "$FN"
+ elif grep -Eq "$name_re" "$FN"; then
+ txt_subst "^$name=.*" "$new" "$FN"
+ txt_subst "^# $name is not set" "$new" "$FN"
+ else
+ echo "$new" >>"$FN"
+ fi
}
-replace() {
- sed -i -e "$@" $FN
+undef_var() {
+ local name=$1
+
+ txt_delete "^$name=" "$FN"
+ txt_delete "^# $name is not set" "$FN"
}
if [ "$1" = "--file" ]; then
@@ -54,8 +125,7 @@ if [ "$1" = "--file" ]; then
if [ "$FN" = "" ] ; then
usage
fi
- shift
- shift
+ shift 2
else
FN=.config
fi
@@ -64,81 +134,83 @@ if [ "$1" = "" ] ; then
usage
fi
+MUNGE_CASE=yes
while [ "$1" != "" ] ; do
CMD="$1"
shift
case "$CMD" in
- --enable|-e)
+ --keep-case|-k)
+ MUNGE_CASE=no
+ continue
+ ;;
+ --refresh)
+ ;;
+ --*-after|-E|-D|-M)
+ checkarg "$1"
+ A=$ARG
+ checkarg "$2"
+ B=$ARG
+ shift 2
+ ;;
+ -*)
checkarg "$1"
- replace "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
shift
;;
+ esac
+ case "$CMD" in
+ --enable|-e)
+ set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y"
+ ;;
--disable|-d)
- checkarg "$1"
- replace "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
- shift
+ set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set"
;;
--module|-m)
- checkarg "$1"
- replace "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
- -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
+ set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m"
+ ;;
+
+ --set-str)
+ # sed swallows one level of escaping, so we need double-escaping
+ set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\""
+ shift
+ ;;
+
+ --set-val)
+ set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
shift
;;
+ --undefine|-u)
+ undef_var "${CONFIG_}$ARG"
+ ;;
--state|-s)
- checkarg "$1"
- if grep -q "# CONFIG_$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
- shift
;;
--enable-after|-E)
- checkarg "$1"
- A=$ARG
- checkarg "$2"
- B=$ARG
- replace "/CONFIG_$A=[my]/aCONFIG_$B=y" \
- -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=y" \
- -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
- shift
- shift
+ set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A"
;;
--disable-after|-D)
- checkarg "$1"
- A=$ARG
- checkarg "$2"
- B=$ARG
- replace "/CONFIG_$A=[my]/a# CONFIG_$B is not set" \
- -e "/# CONFIG_$ARG is not set/a/# CONFIG_$ARG is not set" \
- -e "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
- shift
- shift
+ set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A"
;;
--module-after|-M)
- checkarg "$1"
- A=$ARG
- checkarg "$2"
- B=$ARG
- replace "/CONFIG_$A=[my]/aCONFIG_$B=m" \
- -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=m" \
- -e "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
- -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
- shift
- shift
+ set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A"
;;
# undocumented because it ignores --file (fixme)
@@ -151,4 +223,3 @@ while [ "$1" != "" ] ; do
;;
esac
done
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 22:37:21 +0000