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#!/bin/sh
#
# Copyright (c) 2005, Linus Torvalds
# Copyright (c) 2005, Junio C Hamano
#
# Clone a repository into a different directory that does not yet exist.
usage() {
echo >&2 "* git clone [-l] <repo> <dir>"
exit 1
}
use_local=no
while
case "$#,$1" in
0,*) break ;;
*,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
*,-*) usage ;;
*) break ;;
esac
do
shift
done
repo="$1"
dir="$2"
mkdir "$dir" &&
D=$(
(cd "$dir" && git-init-db && pwd)
) &&
test -d "$D" || usage
# We do local magic only when the user tells us to.
case "$use_local" in
yes)
( cd "$repo/objects" ) || {
repo="$repo/.git"
( cd "$repo/objects" ) || {
echo >&2 "-l flag seen but $repo is not local."
exit 1
}
}
# See if we can hardlink and drop "l" if not.
sample_file=$(cd "$repo" && \
find objects -type f -print | sed -e 1q)
# objects directory should not be empty since we are cloning!
test -f "$repo/$sample_file" || exit
l=
if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
then
l=l
fi &&
rm -f "$D/.git/objects/sample" &&
cp -r$l "$repo/objects" "$D/.git/" || exit 1
# Make a duplicate of refs and HEAD pointer
HEAD=
if test -f "$repo/HEAD"
then
HEAD=HEAD
fi
tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
exit 0
;;
esac
cd "$D" && git clone-pack "$repo"