#! /bin/sh

if [ -z "$2" -o -n "$4" ]; then
   echo "Usage: $0 upstream origin [local]" >&2
   exit 1
fi

upstream="$1"
origin="$2"
local_repo="$3"
test -z "$local_repo" && local_repo="`basename \"$origin\" .git`"

if [ -d "$local_repo"/.git ]; then
   cd "$local_repo"
fi &&

if [ -d .git ]; then
   git remote add upstream "$upstream"
   git remote set-url origin "$origin" || git remote add origin "$origin"
else
   git clone -o upstream "$upstream" "$local_repo" &&
   cd "$local_repo" &&
   chmod a-x .git/config &&
   git remote add origin "$origin"
fi &&

"`dirname \"$0\"`"/set-commit-date-recursive &&
pwd >> "`dirname \"$0\"`"/locate-all.list &&
branch="`git rev-parse --abbrev-ref HEAD`" &&

git pull upstream $branch &&
git pull origin $branch &&
git push -u origin $branch &&

git config branch.$branch.remote upstream &&
git config branch.$branch.remotepush origin &&
git config branch.$branch.merge refs/heads/$branch &&
git config push.default current &&

exec git gc --aggressive