mirror of
https://github.com/git/git
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262 lines
6 KiB
Bash
Executable file
262 lines
6 KiB
Bash
Executable file
#!/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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# See git-sh-setup why.
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unset CDPATH
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usage() {
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echo >&2 "Usage: $0 [--bare] [-l [-s]] [-q] [-u <upload-pack>] [-o <name>] [-n] <repo> [<dir>]"
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exit 1
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}
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get_repo_base() {
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(cd "$1" && (cd .git ; pwd)) 2> /dev/null
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}
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if [ -n "$GIT_SSL_NO_VERIFY" ]; then
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curl_extra_args="-k"
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fi
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http_fetch () {
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# $1 = Remote, $2 = Local
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curl -nsfL $curl_extra_args "$1" >"$2"
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}
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clone_dumb_http () {
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# $1 - remote, $2 - local
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cd "$2" &&
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clone_tmp='.git/clone-tmp' &&
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mkdir -p "$clone_tmp" || exit 1
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http_fetch "$1/info/refs" "$clone_tmp/refs" || {
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echo >&2 "Cannot get remote repository information.
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Perhaps git-update-server-info needs to be run there?"
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exit 1;
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}
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while read sha1 refname
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do
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name=`expr "$refname" : 'refs/\(.*\)'` &&
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case "$name" in
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*^*) ;;
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*)
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git-http-fetch -v -a -w "$name" "$name" "$1/" || exit 1
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esac
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done <"$clone_tmp/refs"
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rm -fr "$clone_tmp"
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}
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quiet=
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use_local=no
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local_shared=no
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no_checkout=
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upload_pack=
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bare=
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origin=origin
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origin_override=
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while
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case "$#,$1" in
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0,*) break ;;
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*,-n|*,--no|*,--no-|*,--no-c|*,--no-ch|*,--no-che|*,--no-chec|\
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*,--no-check|*,--no-checko|*,--no-checkou|*,--no-checkout)
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no_checkout=yes ;;
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*,--na|*,--nak|*,--nake|*,--naked|\
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*,-b|*,--b|*,--ba|*,--bar|*,--bare) bare=yes ;;
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*,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
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*,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared)
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local_shared=yes; use_local=yes ;;
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*,-q|*,--quiet) quiet=-q ;;
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1,-o) usage;;
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*,-o)
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git-check-ref-format "$2" || {
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echo >&2 "'$2' is not suitable for a branch name"
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exit 1
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}
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test -z "$origin_override" || {
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echo >&2 "Do not give more than one -o options."
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exit 1
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}
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origin_override=yes
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origin="$2"; shift
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;;
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1,-u|1,--upload-pack) usage ;;
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*,-u|*,--upload-pack)
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shift
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upload_pack="--exec=$1" ;;
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*,-*) usage ;;
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*) break ;;
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esac
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do
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shift
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done
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# --bare implies --no-checkout
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if test yes = "$bare"
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then
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if test yes = "$origin_override"
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then
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echo >&2 '--bare and -o $origin options are incompatible.'
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exit 1
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fi
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no_checkout=yes
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fi
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# Turn the source into an absolute path if
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# it is local
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repo="$1"
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local=no
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if base=$(get_repo_base "$repo"); then
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repo="$base"
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local=yes
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fi
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dir="$2"
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# Try using "humanish" part of source repo if user didn't specify one
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[ -z "$dir" ] && dir=$(echo "$repo" | sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
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[ -e "$dir" ] && echo "$dir already exists." && usage
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mkdir -p "$dir" &&
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D=$(cd "$dir" && pwd) &&
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trap 'err=$?; cd ..; rm -r "$D"; exit $err' exit
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case "$bare" in
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yes) GIT_DIR="$D" ;;
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*) GIT_DIR="$D/.git" ;;
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esac && export GIT_DIR && git-init-db || usage
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case "$bare" in
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yes)
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GIT_DIR="$D" ;;
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*)
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GIT_DIR="$D/.git" ;;
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esac
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# We do local magic only when the user tells us to.
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case "$local,$use_local" in
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yes,yes)
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( cd "$repo/objects" ) || {
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echo >&2 "-l flag seen but $repo is not local."
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exit 1
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}
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case "$local_shared" in
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no)
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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" "$GIT_DIR/objects/sample" 2>/dev/null
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then
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l=l
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fi &&
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rm -f "$GIT_DIR/objects/sample" &&
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cd "$repo" &&
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find objects -depth -print | cpio -pumd$l "$GIT_DIR/" || exit 1
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;;
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yes)
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mkdir -p "$GIT_DIR/objects/info"
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{
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test -f "$repo/objects/info/alternates" &&
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cat "$repo/objects/info/alternates";
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echo "$repo/objects"
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} >"$GIT_DIR/objects/info/alternates"
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;;
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esac
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# Make a duplicate of refs and HEAD pointer
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HEAD=
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if test -f "$repo/HEAD"
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then
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HEAD=HEAD
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fi
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(cd "$repo" && tar cf - refs $HEAD) |
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(cd "$GIT_DIR" && tar xf -) || exit 1
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;;
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*)
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case "$repo" in
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rsync://*)
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rsync $quiet -av --ignore-existing \
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--exclude info "$repo/objects/" "$GIT_DIR/objects/" &&
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rsync $quiet -av --ignore-existing \
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--exclude info "$repo/refs/" "$GIT_DIR/refs/" || exit
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# Look at objects/info/alternates for rsync -- http will
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# support it natively and git native ones will do it on the
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# remote end. Not having that file is not a crime.
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rsync -q "$repo/objects/info/alternates" \
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"$GIT_DIR/TMP_ALT" 2>/dev/null ||
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rm -f "$GIT_DIR/TMP_ALT"
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if test -f "$GIT_DIR/TMP_ALT"
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then
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( cd "$D" &&
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. git-parse-remote &&
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resolve_alternates "$repo" <"$GIT_DIR/TMP_ALT" ) |
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while read alt
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do
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case "$alt" in 'bad alternate: '*) die "$alt";; esac
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case "$quiet" in
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'') echo >&2 "Getting alternate: $alt" ;;
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esac
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rsync $quiet -av --ignore-existing \
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--exclude info "$alt" "$GIT_DIR/objects" || exit
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done
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rm -f "$GIT_DIR/TMP_ALT"
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fi
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;;
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http://*)
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if test -z "@@NO_CURL@@"
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then
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clone_dumb_http "$repo" "$D"
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else
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echo >&2 "http transport not supported, rebuild Git with curl support"
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exit 1
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fi
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;;
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*)
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cd "$D" && case "$upload_pack" in
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'') git-clone-pack $quiet "$repo" ;;
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*) git-clone-pack $quiet "$upload_pack" "$repo" ;;
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esac || {
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echo >&2 "clone-pack from '$repo' failed."
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exit 1
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}
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;;
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esac
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;;
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esac
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cd "$D" || exit
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if test -f "$GIT_DIR/HEAD" && test -z "$bare"
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then
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head_points_at=`git-symbolic-ref HEAD`
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case "$head_points_at" in
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refs/heads/*)
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head_points_at=`expr "$head_points_at" : 'refs/heads/\(.*\)'`
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mkdir -p "$GIT_DIR/remotes" &&
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echo >"$GIT_DIR/remotes/origin" \
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"URL: $repo
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Pull: $head_points_at:$origin" &&
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git-update-ref "refs/heads/$origin" $(git-rev-parse HEAD) &&
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(cd "$GIT_DIR" && find "refs/heads" -type f -print) |
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while read ref
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do
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head=`expr "$ref" : 'refs/heads/\(.*\)'` &&
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test "$head_points_at" = "$head" ||
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test "$origin" = "$head" ||
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echo "Pull: ${head}:${head}"
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done >>"$GIT_DIR/remotes/origin"
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esac
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case "$no_checkout" in
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'')
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git-read-tree -m -u -v HEAD HEAD
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esac
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fi
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trap - exit
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