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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,230 @@ | ||
| #!/usr/bin/env bash | ||
| # SPDX-License-Identifier: GPL-2.0 | ||
| # Manipulate options in a .config file from the command line | ||
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| myname=${0##*/} | ||
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| # If no prefix forced, use the default CONFIG_ | ||
| CONFIG_="${CONFIG_-CONFIG_}" | ||
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| # We use an uncommon delimiter for sed substitutions | ||
| SED_DELIM=$(echo -en "\001") | ||
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| usage() { | ||
| cat >&2 <<EOL | ||
| Manipulate options in a .config file from the command line. | ||
| Usage: | ||
| $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 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 | ||
| --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 .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. | ||
| $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 | ||
| } | ||
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| checkarg() { | ||
| ARG="$1" | ||
| if [ "$ARG" = "" ] ; then | ||
| usage | ||
| fi | ||
| case "$ARG" in | ||
| ${CONFIG_}*) | ||
| ARG="${ARG/${CONFIG_}/}" | ||
| ;; | ||
| esac | ||
| if [ "$MUNGE_CASE" = "yes" ] ; then | ||
| ARG="`echo $ARG | tr a-z A-Z`" | ||
| fi | ||
| } | ||
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| txt_append() { | ||
| local anchor="$1" | ||
| local insert="$2" | ||
| local infile="$3" | ||
| local tmpfile="$infile.swp" | ||
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| # sed append cmd: 'a\' + newline + text + newline | ||
| cmd="$(printf "a\\%b$insert" "\n")" | ||
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| sed -e "/$anchor/$cmd" "$infile" >"$tmpfile" | ||
| # replace original file with the edited one | ||
| mv "$tmpfile" "$infile" | ||
| } | ||
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| txt_subst() { | ||
| local before="$1" | ||
| local after="$2" | ||
| local infile="$3" | ||
| local tmpfile="$infile.swp" | ||
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| sed -e "s$SED_DELIM$before$SED_DELIM$after$SED_DELIM" "$infile" >"$tmpfile" | ||
| # replace original file with the edited one | ||
| mv "$tmpfile" "$infile" | ||
| } | ||
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| txt_delete() { | ||
| local text="$1" | ||
| local infile="$2" | ||
| local tmpfile="$infile.swp" | ||
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| sed -e "/$text/d" "$infile" >"$tmpfile" | ||
| # replace original file with the edited one | ||
| mv "$tmpfile" "$infile" | ||
| } | ||
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| set_var() { | ||
| local name=$1 new=$2 before=$3 | ||
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| name_re="^($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 | ||
| } | ||
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| undef_var() { | ||
| local name=$1 | ||
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| txt_delete "^$name=" "$FN" | ||
| txt_delete "^# $name is not set" "$FN" | ||
| } | ||
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| if [ "$1" = "--file" ]; then | ||
| FN="$2" | ||
| if [ "$FN" = "" ] ; then | ||
| usage | ||
| fi | ||
| shift 2 | ||
| else | ||
| FN=.config | ||
| fi | ||
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| if [ "$1" = "" ] ; then | ||
| usage | ||
| fi | ||
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| MUNGE_CASE=yes | ||
| while [ "$1" != "" ] ; do | ||
| CMD="$1" | ||
| shift | ||
| case "$CMD" in | ||
| --keep-case|-k) | ||
| MUNGE_CASE=no | ||
| continue | ||
| ;; | ||
| --refresh) | ||
| ;; | ||
| --*-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" | ||
| ;; | ||
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| --disable|-d) | ||
| set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set" | ||
| ;; | ||
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| --module|-m) | ||
| set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m" | ||
| ;; | ||
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| --set-str) | ||
| # sed swallows one level of escaping, so we need double-escaping | ||
| set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\"" | ||
| shift | ||
| ;; | ||
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| --set-val) | ||
| set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1" | ||
| shift | ||
| ;; | ||
| --undefine|-u) | ||
| undef_var "${CONFIG_}$ARG" | ||
| ;; | ||
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| --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="${V/#\"/}" | ||
| V="${V/%\"/}" | ||
| V="${V//\\\"/\"}" | ||
| echo "${V}" | ||
| fi | ||
| fi | ||
| ;; | ||
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| --enable-after|-E) | ||
| set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A" | ||
| ;; | ||
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| --disable-after|-D) | ||
| set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A" | ||
| ;; | ||
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| --module-after|-M) | ||
| set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A" | ||
| ;; | ||
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| # undocumented because it ignores --file (fixme) | ||
| --refresh) | ||
| yes "" | make oldconfig | ||
| ;; | ||
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| *) | ||
| echo "bad command: $CMD" >&2 | ||
| usage | ||
| ;; | ||
| esac | ||
| done |
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