git-repo/hooks/commit-msg
Shawn O. Pearce a949fa5d20 Automatically install Gerrit Code Review's commit-msg hook
Most users of repo are also using Gerrit Code Review, and will want
the commit-msg hook to be automatically installed into their local
projects so that Change-Ids are assigned when commits are created,
not when they are first uploaded.

Change-Id: Ide42e93b068832f099d68a79c2863d22145d05ad
Signed-off-by: Shawn O. Pearce <sop@google.com>
2009-08-22 18:22:04 -07:00

45 lines
808 B
Bash
Executable File

#!/bin/sh
MSG="$1"
# Check for, and add if missing, a unique Change-Id
#
add_ChangeId() {
if grep '^Change-Id: ' "$MSG" >/dev/null
then
return
fi
id=$(_gen_ChangeId)
out="$MSG.new"
ftt="$MSG.footers"
sed -e '/^[A-Za-z][A-Za-z0-9-]*: /,$d' <"$MSG" >"$out"
sed -ne '/^[A-Za-z][A-Za-z0-9-]*: /,$p' <"$MSG" >"$ftt"
if ! [ -s "$ftt" ]
then
echo >>"$out"
fi
echo "Change-Id: I$id" >>"$out"
cat "$ftt" >>"$out"
mv -f "$out" "$MSG"
rm -f "$out" "$ftt"
}
_gen_ChangeIdInput() {
echo "tree $(git write-tree)"
if parent=$(git rev-parse HEAD^0 2>/dev/null)
then
echo "parent $parent"
fi
echo "author $(git var GIT_AUTHOR_IDENT)"
echo "committer $(git var GIT_COMMITTER_IDENT)"
echo
cat "$MSG"
}
_gen_ChangeId() {
_gen_ChangeIdInput |
git hash-object -t commit --stdin
}
add_ChangeId