aboutsummaryrefslogtreecommitdiff
path: root/scripts/config
diff options
context:
space:
mode:
authorClement Chauplannaz <chauplac@gmail.com>2013-07-13 16:36:56 +0200
committerYann E. MORIN <yann.morin.1998@free.fr>2013-08-15 22:48:07 +0200
commit83e8b90e1d2cc5ff5d2443f2486c2d786a4997ce (patch)
tree9d57d3bee9b3de3a623ab52bd2e4a14a9289b5ba /scripts/config
parent129784abc982ccac43322c2f175f3ca735c2ca73 (diff)
downloadleg-kernel-83e8b90e1d2cc5ff5d2443f2486c2d786a4997ce.tar.gz
scripts/config: use sed's POSIX interface
Script `config' relies on extensions of `GNU sed', and is thus not working on all Unixes: - in-place edition of files (-i), which can be replaced with a temporary file; - extended-regexps (-r), which can be split into basic regexps; - single-line calls to `a' command, while some implementations require a leading newline before the parameter. Rewrite calls to `sed' to comply with POSIX interface, and move them to helper functions. Signed-off-by: Clement Chauplannaz <chauplac@gmail.com> Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Diffstat (limited to 'scripts/config')
-rwxr-xr-xscripts/config44
1 files changed, 41 insertions, 3 deletions
diff --git a/scripts/config b/scripts/config
index 567120a87c39..2283be2bb62c 100755
--- a/scripts/config
+++ b/scripts/config
@@ -62,15 +62,52 @@ checkarg() {
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
- 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
@@ -79,7 +116,8 @@ set_var() {
undef_var() {
local name=$1
- sed -ri "/^($name=|# $name is not set)/d" "$FN"
+ txt_delete "^$name=" "$FN"
+ txt_delete "^# $name is not set" "$FN"
}
if [ "$1" = "--file" ]; then