Build in clone
Thanks to Johannes Schindelin for various comments and improvements, including supporting cloning full bundles. Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Daniel Barkalow
committed by
Junio C Hamano
Junio C Hamano
parent
f225aeb278
commit
8434c2f1af
523
contrib/examples/git-clone.sh
Executable file
523
contrib/examples/git-clone.sh
Executable file
@ -0,0 +1,523 @@
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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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# See git-sh-setup why.
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unset CDPATH
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OPTIONS_SPEC="\
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git-clone [options] [--] <repo> [<dir>]
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--
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n,no-checkout don't create a checkout
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bare create a bare repository
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naked create a bare repository
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l,local to clone from a local repository
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no-hardlinks don't use local hardlinks, always copy
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s,shared setup as a shared repository
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template= path to the template directory
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q,quiet be quiet
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reference= reference repository
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o,origin= use <name> instead of 'origin' to track upstream
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u,upload-pack= path to git-upload-pack on the remote
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depth= create a shallow clone of that depth
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use-separate-remote compatibility, do not use
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no-separate-remote compatibility, do not use"
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die() {
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echo >&2 "$@"
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exit 1
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}
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usage() {
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exec "$0" -h
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}
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eval "$(echo "$OPTIONS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
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get_repo_base() {
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(
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cd "`/bin/pwd`" &&
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cd "$1" || cd "$1.git" &&
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{
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cd .git
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pwd
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}
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) 2>/dev/null
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}
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if [ -n "$GIT_SSL_NO_VERIFY" -o \
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"`git config --bool http.sslVerify`" = false ]; 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" >"$2"
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curl_exit_status=$?
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case $curl_exit_status in
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126|127) exit ;;
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*) return $curl_exit_status ;;
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esac
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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_DIR/clone-tmp" &&
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mkdir -p "$clone_tmp" || exit 1
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if [ -n "$GIT_CURL_FTP_NO_EPSV" -o \
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"`git config --bool http.noEPSV`" = true ]; then
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curl_extra_args="${curl_extra_args} --disable-epsv"
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fi
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http_fetch "$1/info/refs" "$clone_tmp/refs" ||
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die "Cannot get remote repository information.
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Perhaps git-update-server-info needs to be run there?"
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test "z$quiet" = z && v=-v || v=
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while read sha1 refname
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do
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name=`expr "z$refname" : 'zrefs/\(.*\)'` &&
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case "$name" in
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*^*) continue;;
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esac
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case "$bare,$name" in
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yes,* | ,heads/* | ,tags/*) ;;
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*) continue ;;
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esac
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if test -n "$use_separate_remote" &&
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branch_name=`expr "z$name" : 'zheads/\(.*\)'`
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then
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tname="remotes/$origin/$branch_name"
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else
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tname=$name
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fi
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git-http-fetch $v -a -w "$tname" "$sha1" "$1" || exit 1
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done <"$clone_tmp/refs"
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rm -fr "$clone_tmp"
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http_fetch "$1/HEAD" "$GIT_DIR/REMOTE_HEAD" ||
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rm -f "$GIT_DIR/REMOTE_HEAD"
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if test -f "$GIT_DIR/REMOTE_HEAD"; then
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head_sha1=`cat "$GIT_DIR/REMOTE_HEAD"`
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case "$head_sha1" in
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'ref: refs/'*)
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;;
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*)
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git-http-fetch $v -a "$head_sha1" "$1" ||
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rm -f "$GIT_DIR/REMOTE_HEAD"
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;;
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esac
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fi
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}
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quiet=
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local=no
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use_local_hardlink=yes
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local_shared=no
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unset template
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no_checkout=
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upload_pack=
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bare=
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reference=
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origin=
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origin_override=
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use_separate_remote=t
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depth=
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no_progress=
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local_explicitly_asked_for=
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test -t 1 || no_progress=--no-progress
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while test $# != 0
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do
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case "$1" in
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-n|--no-checkout)
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no_checkout=yes ;;
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--naked|--bare)
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bare=yes ;;
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-l|--local)
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local_explicitly_asked_for=yes
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use_local_hardlink=yes
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;;
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--no-hardlinks)
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use_local_hardlink=no ;;
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-s|--shared)
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local_shared=yes ;;
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--template)
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shift; template="--template=$1" ;;
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-q|--quiet)
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quiet=-q ;;
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--use-separate-remote|--no-separate-remote)
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die "clones are always made with separate-remote layout" ;;
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--reference)
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shift; reference="$1" ;;
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-o|--origin)
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shift;
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case "$1" in
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'')
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usage ;;
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*/*)
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die "'$1' is not suitable for an origin name"
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esac
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git check-ref-format "heads/$1" ||
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die "'$1' is not suitable for a branch name"
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test -z "$origin_override" ||
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die "Do not give more than one --origin options."
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origin_override=yes
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origin="$1"
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;;
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-u|--upload-pack)
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shift
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upload_pack="--upload-pack=$1" ;;
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--depth)
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shift
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depth="--depth=$1" ;;
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--)
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shift
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break ;;
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*)
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usage ;;
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esac
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shift
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done
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repo="$1"
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test -n "$repo" ||
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die 'you must specify a repository to clone.'
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# --bare implies --no-checkout and --no-separate-remote
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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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die '--bare and --origin $origin options are incompatible.'
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fi
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no_checkout=yes
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use_separate_remote=
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fi
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if test -z "$origin"
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then
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origin=origin
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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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if base=$(get_repo_base "$repo"); then
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repo="$base"
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if test -z "$depth"
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then
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local=yes
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fi
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elif test -f "$repo"
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then
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case "$repo" in /*) ;; *) repo="$PWD/$repo" ;; esac
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fi
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# Decide the directory name of the new repository
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if test -n "$2"
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then
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dir="$2"
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test $# = 2 || die "excess parameter to git-clone"
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else
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# Derive one from the repository name
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# Try using "humanish" part of source repo if user didn't specify one
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if test -f "$repo"
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then
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# Cloning from a bundle
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dir=$(echo "$repo" | sed -e 's|/*\.bundle$||' -e 's|.*/||g')
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else
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dir=$(echo "$repo" |
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sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
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fi
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fi
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[ -e "$dir" ] && die "destination directory '$dir' already exists."
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[ yes = "$bare" ] && unset GIT_WORK_TREE
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[ -n "$GIT_WORK_TREE" ] && [ -e "$GIT_WORK_TREE" ] &&
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die "working tree '$GIT_WORK_TREE' already exists."
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D=
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W=
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cleanup() {
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err=$?
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test -z "$D" && rm -rf "$dir"
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test -z "$W" && test -n "$GIT_WORK_TREE" && rm -rf "$GIT_WORK_TREE"
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cd ..
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test -n "$D" && rm -rf "$D"
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test -n "$W" && rm -rf "$W"
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exit $err
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}
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trap cleanup 0
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mkdir -p "$dir" && D=$(cd "$dir" && pwd) || usage
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test -n "$GIT_WORK_TREE" && mkdir -p "$GIT_WORK_TREE" &&
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W=$(cd "$GIT_WORK_TREE" && pwd) && GIT_WORK_TREE="$W" && export GIT_WORK_TREE
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if test yes = "$bare" || test -n "$GIT_WORK_TREE"; then
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GIT_DIR="$D"
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else
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GIT_DIR="$D/.git"
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fi &&
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export GIT_DIR &&
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GIT_CONFIG="$GIT_DIR/config" git-init $quiet ${template+"$template"} || usage
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if test -n "$bare"
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then
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GIT_CONFIG="$GIT_DIR/config" git config core.bare true
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fi
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if test -n "$reference"
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then
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ref_git=
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if test -d "$reference"
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then
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if test -d "$reference/.git/objects"
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then
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ref_git="$reference/.git"
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elif test -d "$reference/objects"
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then
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ref_git="$reference"
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fi
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fi
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if test -n "$ref_git"
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then
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ref_git=$(cd "$ref_git" && pwd)
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echo "$ref_git/objects" >"$GIT_DIR/objects/info/alternates"
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(
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GIT_DIR="$ref_git" git for-each-ref \
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--format='%(objectname) %(*objectname)'
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) |
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while read a b
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do
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test -z "$a" ||
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git update-ref "refs/reference-tmp/$a" "$a"
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test -z "$b" ||
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git update-ref "refs/reference-tmp/$b" "$b"
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done
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else
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die "reference repository '$reference' is not a local directory."
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fi
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fi
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rm -f "$GIT_DIR/CLONE_HEAD"
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# We do local magic only when the user tells us to.
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case "$local" in
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yes)
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( cd "$repo/objects" ) ||
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die "cannot chdir to local '$repo/objects'."
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if test "$local_shared" = yes
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then
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mkdir -p "$GIT_DIR/objects/info"
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echo "$repo/objects" >>"$GIT_DIR/objects/info/alternates"
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else
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cpio_quiet_flag=""
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cpio --help 2>&1 | grep -- --quiet >/dev/null && \
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cpio_quiet_flag=--quiet
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l= &&
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if test "$use_local_hardlink" = yes
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then
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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 because
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# we are cloning!
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test -f "$repo/$sample_file" ||
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die "fatal: cannot clone empty repository"
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if ln "$repo/$sample_file" "$GIT_DIR/objects/sample" 2>/dev/null
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then
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rm -f "$GIT_DIR/objects/sample"
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l=l
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elif test -n "$local_explicitly_asked_for"
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then
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echo >&2 "Warning: -l asked but cannot hardlink to $repo"
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fi
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fi &&
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cd "$repo" &&
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find objects -depth -print | cpio $cpio_quiet_flag -pumd$l "$GIT_DIR/" || \
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exit 1
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fi
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git-ls-remote "$repo" >"$GIT_DIR/CLONE_HEAD" || exit 1
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;;
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*)
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case "$repo" in
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rsync://*)
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case "$depth" in
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"") ;;
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*) die "shallow over rsync not supported" ;;
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esac
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rsync $quiet -av --ignore-existing \
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--exclude info "$repo/objects/" "$GIT_DIR/objects/" ||
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exit
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# Look at objects/info/alternates for rsync -- http will
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# support it natively and git native ones will do it on the
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# remote end. Not having that file is not a crime.
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rsync -q "$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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git-ls-remote "$repo" >"$GIT_DIR/CLONE_HEAD" || exit 1
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;;
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https://*|http://*|ftp://*)
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case "$depth" in
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"") ;;
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*) die "shallow over http or ftp not supported" ;;
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esac
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if test -z "@@NO_CURL@@"
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||||
then
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clone_dumb_http "$repo" "$D"
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else
|
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die "http transport not supported, rebuild Git with curl support"
|
||||
fi
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;;
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*)
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if [ -f "$repo" ] ; then
|
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git bundle unbundle "$repo" > "$GIT_DIR/CLONE_HEAD" ||
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die "unbundle from '$repo' failed."
|
||||
else
|
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case "$upload_pack" in
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'') git-fetch-pack --all -k $quiet $depth $no_progress "$repo";;
|
||||
*) git-fetch-pack --all -k \
|
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$quiet "$upload_pack" $depth $no_progress "$repo" ;;
|
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esac >"$GIT_DIR/CLONE_HEAD" ||
|
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die "fetch-pack from '$repo' failed."
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
;;
|
||||
esac
|
||||
test -d "$GIT_DIR/refs/reference-tmp" && rm -fr "$GIT_DIR/refs/reference-tmp"
|
||||
|
||||
if test -f "$GIT_DIR/CLONE_HEAD"
|
||||
then
|
||||
# Read git-fetch-pack -k output and store the remote branches.
|
||||
if [ -n "$use_separate_remote" ]
|
||||
then
|
||||
branch_top="remotes/$origin"
|
||||
else
|
||||
branch_top="heads"
|
||||
fi
|
||||
tag_top="tags"
|
||||
while read sha1 name
|
||||
do
|
||||
case "$name" in
|
||||
*'^{}')
|
||||
continue ;;
|
||||
HEAD)
|
||||
destname="REMOTE_HEAD" ;;
|
||||
refs/heads/*)
|
||||
destname="refs/$branch_top/${name#refs/heads/}" ;;
|
||||
refs/tags/*)
|
||||
destname="refs/$tag_top/${name#refs/tags/}" ;;
|
||||
*)
|
||||
continue ;;
|
||||
esac
|
||||
git update-ref -m "clone: from $repo" "$destname" "$sha1" ""
|
||||
done < "$GIT_DIR/CLONE_HEAD"
|
||||
fi
|
||||
|
||||
if test -n "$W"; then
|
||||
cd "$W" || exit
|
||||
else
|
||||
cd "$D" || exit
|
||||
fi
|
||||
|
||||
if test -z "$bare"
|
||||
then
|
||||
# a non-bare repository is always in separate-remote layout
|
||||
remote_top="refs/remotes/$origin"
|
||||
head_sha1=
|
||||
test ! -r "$GIT_DIR/REMOTE_HEAD" || head_sha1=`cat "$GIT_DIR/REMOTE_HEAD"`
|
||||
case "$head_sha1" in
|
||||
'ref: refs/'*)
|
||||
# Uh-oh, the remote told us (http transport done against
|
||||
# new style repository with a symref HEAD).
|
||||
# Ideally we should skip the guesswork but for now
|
||||
# opt for minimum change.
|
||||
head_sha1=`expr "z$head_sha1" : 'zref: refs/heads/\(.*\)'`
|
||||
head_sha1=`cat "$GIT_DIR/$remote_top/$head_sha1"`
|
||||
;;
|
||||
esac
|
||||
|
||||
# The name under $remote_top the remote HEAD seems to point at.
|
||||
head_points_at=$(
|
||||
(
|
||||
test -f "$GIT_DIR/$remote_top/master" && echo "master"
|
||||
cd "$GIT_DIR/$remote_top" &&
|
||||
find . -type f -print | sed -e 's/^\.\///'
|
||||
) | (
|
||||
done=f
|
||||
while read name
|
||||
do
|
||||
test t = $done && continue
|
||||
branch_tip=`cat "$GIT_DIR/$remote_top/$name"`
|
||||
if test "$head_sha1" = "$branch_tip"
|
||||
then
|
||||
echo "$name"
|
||||
done=t
|
||||
fi
|
||||
done
|
||||
)
|
||||
)
|
||||
|
||||
# Upstream URL
|
||||
git config remote."$origin".url "$repo" &&
|
||||
|
||||
# Set up the mappings to track the remote branches.
|
||||
git config remote."$origin".fetch \
|
||||
"+refs/heads/*:$remote_top/*" '^$' &&
|
||||
|
||||
# Write out remote.$origin config, and update our "$head_points_at".
|
||||
case "$head_points_at" in
|
||||
?*)
|
||||
# Local default branch
|
||||
git symbolic-ref HEAD "refs/heads/$head_points_at" &&
|
||||
|
||||
# Tracking branch for the primary branch at the remote.
|
||||
git update-ref HEAD "$head_sha1" &&
|
||||
|
||||
rm -f "refs/remotes/$origin/HEAD"
|
||||
git symbolic-ref "refs/remotes/$origin/HEAD" \
|
||||
"refs/remotes/$origin/$head_points_at" &&
|
||||
|
||||
git config branch."$head_points_at".remote "$origin" &&
|
||||
git config branch."$head_points_at".merge "refs/heads/$head_points_at"
|
||||
;;
|
||||
'')
|
||||
if test -z "$head_sha1"
|
||||
then
|
||||
# Source had nonexistent ref in HEAD
|
||||
echo >&2 "Warning: Remote HEAD refers to nonexistent ref, unable to checkout."
|
||||
no_checkout=t
|
||||
else
|
||||
# Source had detached HEAD pointing nowhere
|
||||
git update-ref --no-deref HEAD "$head_sha1" &&
|
||||
rm -f "refs/remotes/$origin/HEAD"
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
|
||||
case "$no_checkout" in
|
||||
'')
|
||||
test "z$quiet" = z -a "z$no_progress" = z && v=-v || v=
|
||||
git read-tree -m -u $v HEAD HEAD
|
||||
esac
|
||||
fi
|
||||
rm -f "$GIT_DIR/CLONE_HEAD" "$GIT_DIR/REMOTE_HEAD"
|
||||
|
||||
trap - 0
|
||||
Reference in New Issue
Block a user