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