* [Buildroot] [PATCH] kconfig: add script to manipulate .config files on the command line
@ 2017-09-26 19:55 Marcus Folkesson
2017-09-26 20:26 ` Arnout Vandecappelle
0 siblings, 1 reply; 2+ messages in thread
From: Marcus Folkesson @ 2017-09-26 19:55 UTC (permalink / raw)
To: buildroot
Default prefix is set to `BR2_` but may be overidden by setting
BR2_PREFIX.
Example usage:
./support/scripts/config --package --enable GNUPG
Enable `BR2_PACKAGE_GNUPG`
./support/scripts/config --package --state GNUPG
y
Check state of config option `BR2_PACKAGE_GNUPG`
./support/scripts/config --package --disable GNUPG
Enable `BR2_PACKAGE_GNUPG`
./support/scripts/config --set-str TARGET_GENERIC_ISSUE "Welcome"
Set `BR2_TARGET_GENERIC_ISSUE` to "Welcome"
Copied from the Linux kernel (4.13-rc6) source code and adapted to
Buildroot.
Thanks to Andi Kleen who is the original author of this script.
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
---
utils/config | 230 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 230 insertions(+)
create mode 100755 utils/config
diff --git a/utils/config b/utils/config
new file mode 100755
index 0000000000..4b5f2e4109
--- /dev/null
+++ b/utils/config
@@ -0,0 +1,230 @@
+#!/bin/bash
+# Manipulate options in a .config file from the command line
+
+myname=${0##*/}
+
+# If no prefix forced, use the default BR2_PACKAGE_
+BR2_PREFIX="${BR2_PREFIX-BR2_}"
+
+usage() {
+ cat >&2 <<EOL
+Manipulate options in a .config file from the command line.
+Usage:
+$myname options command ...
+commands:
+ --enable|-e option Enable option
+ --disable|-d option Disable option
+ --module|-m option Turn option into a module
+ --set-str option string
+ Set option to "string"
+ --set-val option value
+ Set option to value
+ --undefine|-u option Undefine option
+ --state|-s option Print state of option (n,y,m,undef)
+ --package|-p Operate on package (set prefix to BR2_PACKAGE_)
+
+ --enable-after|-E beforeopt option
+ Enable option directly after other option
+ --disable-after|-D beforeopt option
+ Disable option directly after other option
+ --module-after|-M beforeopt option
+ Turn option into module directly after other option
+
+ commands can be repeated multiple times
+
+options:
+ --file config-file .config file to change (default .config)
+ --keep-case|-k Keep next symbols' case (dont' upper-case it)
+
+$myname doesn't check the validity of the .config file. This is done@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 'BR2_PACKAGE_' as the default symbol prefix. Set the environment
+variable BR2_PREFIX to the prefix to use. Eg.: BR2_PREFIX="FOO_" $myname ...
+EOL
+ exit 1
+}
+
+checkarg() {
+ ARG="$1"
+ if [ "$ARG" = "" ] ; then
+ usage
+ fi
+ case "$ARG" in
+ ${BR2_PREFIX}*)
+ ARG="${ARG/${BR2_PREFIX}/}"
+ ;;
+ esac
+ if [ "$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
+}
+
+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
+ usage
+ fi
+ shift 2
+else
+ FN=.config
+fi
+
+if [ "$1" = "" ] ; then
+ usage
+fi
+
+MUNGE_CASE=yes
+while [ "$1" != "" ] ; do
+ CMD="$1"
+ shift
+ case "$CMD" in
+ --keep-case|-k)
+ MUNGE_CASE=no
+ continue
+ ;;
+ --package|-p)
+ BR2_PREFIX="BR2_PACKAGE_"
+ 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 "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=y"
+ ;;
+
+ --disable|-d)
+ set_var "${BR2_PREFIX}$ARG" "# ${BR2_PREFIX}$ARG is not set"
+ ;;
+
+ --module|-m)
+ set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=m"
+ ;;
+
+ --set-str)
+ # sed swallows one level of escaping, so we need double-escaping
+ set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=\"${1//\"/\\\\\"}\""
+ shift
+ ;;
+
+ --set-val)
+ set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=$1"
+ shift
+ ;;
+ --undefine|-u)
+ undef_var "${BR2_PREFIX}$ARG"
+ ;;
+
+ --state|-s)
+ if grep -q "# ${BR2_PREFIX}$ARG is not set" $FN ; then
+ echo n
+ else
+ V="$(grep "^${BR2_PREFIX}$ARG=" $FN)"
+ if [ $? != 0 ] ; then
+ echo undef
+ else
+ V="${V/#${BR2_PREFIX}$ARG=/}"
+ V="${V/#\"/}"
+ V="${V/%\"/}"
+ V="${V//\\\"/\"}"
+ echo "${V}"
+ fi
+ fi
+ ;;
+
+ --enable-after|-E)
+ set_var "${BR2_PREFIX}$B" "${BR2_PREFIX}$B=y" "${BR2_PREFIX}$A"
+ ;;
+
+ --disable-after|-D)
+ set_var "${BR2_PREFIX}$B" "# ${BR2_PREFIX}$B is not set" "${BR2_PREFIX}$A"
+ ;;
+
+ --module-after|-M)
+ set_var "${BR2_PREFIX}$B" "${BR2_PREFIX}$B=m" "${BR2_PREFIX}$A"
+ ;;
+
+ # undocumented because it ignores --file (fixme)
+ --refresh)
+ yes "" | make oldconfig
+ ;;
+
+ *)
+ usage
+ ;;
+ esac
+done
--
2.13.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [Buildroot] [PATCH] kconfig: add script to manipulate .config files on the command line
2017-09-26 19:55 [Buildroot] [PATCH] kconfig: add script to manipulate .config files on the command line Marcus Folkesson
@ 2017-09-26 20:26 ` Arnout Vandecappelle
0 siblings, 0 replies; 2+ messages in thread
From: Arnout Vandecappelle @ 2017-09-26 20:26 UTC (permalink / raw)
To: buildroot
This looks very interesting! Just a few remarks...
On 26-09-17 21:55, Marcus Folkesson wrote:
> Default prefix is set to `BR2_` but may be overidden by setting
> BR2_PREFIX.
>
> Example usage:
>
> ./support/scripts/config --package --enable GNUPG
> Enable `BR2_PACKAGE_GNUPG`
It's clearer if you swap the lines:
Enable `BR2_PACKAGE_GNUPG`:
./support/scripts/config --package --enable GNUPG
>
> ./support/scripts/config --package --state GNUPG
> y
> Check state of config option `BR2_PACKAGE_GNUPG`
>
> ./support/scripts/config --package --disable GNUPG
> Enable `BR2_PACKAGE_GNUPG`
>
> ./support/scripts/config --set-str TARGET_GENERIC_ISSUE "Welcome"
> Set `BR2_TARGET_GENERIC_ISSUE` to "Welcome"
>
> Copied from the Linux kernel (4.13-rc6) source code and adapted to
> Buildroot.
> Thanks to Andi Kleen who is the original author of this script.
>
> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
> ---
> utils/config | 230 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 230 insertions(+)
> create mode 100755 utils/config
>
> diff --git a/utils/config b/utils/config
> new file mode 100755
> index 0000000000..4b5f2e4109
> --- /dev/null
> +++ b/utils/config
> @@ -0,0 +1,230 @@
> +#!/bin/bash
> +# Manipulate options in a .config file from the command line
> +
> +myname=${0##*/}
> +
> +# If no prefix forced, use the default BR2_PACKAGE_
BR2_, not BR2_PACKAGE (a few more times below).
> +BR2_PREFIX="${BR2_PREFIX-BR2_}"
> +
> +usage() {
> + cat >&2 <<EOL
> +Manipulate options in a .config file from the command line.
> +Usage:
> +$myname options command ...
> +commands:
> + --enable|-e option Enable option
> + --disable|-d option Disable option
> + --module|-m option Turn option into a module
> + --set-str option string
> + Set option to "string"
> + --set-val option value
> + Set option to value
> + --undefine|-u option Undefine option
> + --state|-s option Print state of option (n,y,m,undef)
> + --package|-p Operate on package (set prefix to BR2_PACKAGE_)
It would make more sense to move this to the options section of the help.
> +
> + --enable-after|-E beforeopt option
> + Enable option directly after other option
> + --disable-after|-D beforeopt option
> + Disable option directly after other option
> + --module-after|-M beforeopt option
> + Turn option into module directly after other option
> +
> + commands can be repeated multiple times
> +
> +options:
> + --file config-file .config file to change (default .config)
> + --keep-case|-k Keep next symbols' case (dont' upper-case it)
> +
> +$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 'BR2_PACKAGE_' as the default symbol prefix. Set the environment
> +variable BR2_PREFIX to the prefix to use. Eg.: BR2_PREFIX="FOO_" $myname ...
> +EOL
> + exit 1
> +}
> +
> +checkarg() {
> + ARG="$1"
> + if [ "$ARG" = "" ] ; then
> + usage
> + fi
> + case "$ARG" in
> + ${BR2_PREFIX}*)
> + ARG="${ARG/${BR2_PREFIX}/}"
> + ;;
> + esac
It would make more sense to me to first munge case and then strip the prefix,
so that a prefix of br2_foo is also stripped.
> + if [ "$MUNGE_CASE" = "yes" ] ; then
> + ARG="`echo $ARG | tr a-z A-Z`"
Better also convert - to _ like our UPPERCASE macro.
> + 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"
Why not sed -i? sed does a better job of creating an appropriate tmpfile. Same
below, obviously.
> + # 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
> +}
> +
> +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
> + usage
> + fi
> + shift 2
> +else
> + FN=.config
> +fi
> +
> +if [ "$1" = "" ] ; then
> + usage
> +fi
> +
> +MUNGE_CASE=yes
> +while [ "$1" != "" ] ; do
> + CMD="$1"
> + shift
> + case "$CMD" in
> + --keep-case|-k)
> + MUNGE_CASE=no
> + continue
> + ;;
> + --package|-p)
> + BR2_PREFIX="BR2_PACKAGE_"
> + continue
> + ;;
> + --refresh)
I'd remove this (see below).
> + ;;
> + --*-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 "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=y"
> + ;;
> +
> + --disable|-d)
> + set_var "${BR2_PREFIX}$ARG" "# ${BR2_PREFIX}$ARG is not set"
> + ;;
> +
> + --module|-m)
> + set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=m"
> + ;;
> +
> + --set-str)
> + # sed swallows one level of escaping, so we need double-escaping
> + set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=\"${1//\"/\\\\\"}\""
> + shift
> + ;;
> +
> + --set-val)
> + set_var "${BR2_PREFIX}$ARG" "${BR2_PREFIX}$ARG=$1"
> + shift
> + ;;
> + --undefine|-u)
> + undef_var "${BR2_PREFIX}$ARG"
> + ;;
> +
> + --state|-s)
> + if grep -q "# ${BR2_PREFIX}$ARG is not set" $FN ; then
> + echo n
> + else
> + V="$(grep "^${BR2_PREFIX}$ARG=" $FN)"
> + if [ $? != 0 ] ; then
> + echo undef
> + else
> + V="${V/#${BR2_PREFIX}$ARG=/}"
> + V="${V/#\"/}"
> + V="${V/%\"/}"
> + V="${V//\\\"/\"}"
> + echo "${V}"
> + fi
> + fi
> + ;;
> +
> + --enable-after|-E)
> + set_var "${BR2_PREFIX}$B" "${BR2_PREFIX}$B=y" "${BR2_PREFIX}$A"
> + ;;
> +
> + --disable-after|-D)
> + set_var "${BR2_PREFIX}$B" "# ${BR2_PREFIX}$B is not set" "${BR2_PREFIX}$A"
> + ;;
> +
> + --module-after|-M)
> + set_var "${BR2_PREFIX}$B" "${BR2_PREFIX}$B=m" "${BR2_PREFIX}$A"
> + ;;
> +
> + # undocumented because it ignores --file (fixme)
> + --refresh)
> + yes "" | make oldconfig
I would remove this. It's not needed, it's wrong (make olddefconfig is better),
and it doesn't work with --file.
Regards,
Arnout
> + ;;
> +
> + *)
> + usage
> + ;;
> + esac
> +done
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint: 7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF
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2017-09-26 19:55 [Buildroot] [PATCH] kconfig: add script to manipulate .config files on the command line Marcus Folkesson
2017-09-26 20:26 ` Arnout Vandecappelle
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