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citadel/poky/scripts/combo-layer-hook-default.sh

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#!/bin/sh
# Hook to add source component/revision info to commit message
# Parameter:
# $1 patch-file
# $2 revision
# $3 reponame
patchfile=$1
rev=$2
reponame=$3
sed -i -e "0,/^Subject:/s#^Subject: \[PATCH\] \($reponame: \)*\(.*\)#Subject: \[PATCH\] $reponame: \2#" $patchfile
if grep -q '^Signed-off-by:' $patchfile; then
# Insert before Signed-off-by.
sed -i -e "0,/^Signed-off-by:/s#\(^Signed-off-by:.*\)#\(From $reponame rev: $rev\)\n\n\1#" $patchfile
else
# Insert before final --- separator, with extra blank lines removed.
perl -e "\$_ = join('', <>); s/^(.*\S[ \t]*)(\n|\n\s*\n)---\n/\$1\n\nFrom $reponame rev: $rev\n---\n/s; print;" $patchfile >$patchfile.tmp
mv $patchfile.tmp $patchfile
fi