1#!/bin/sh
2#
3# Copyright (c) 2005, Linus Torvalds
4# Copyright (c) 2005, Junio C Hamano
5#
6# Clone a repository into a different directory that does not yet exist.
7# See git-sh-setup why.
9unset CDPATH
10usage() {
12 echo >&2 "Usage: $0 [--naked] [-l [-s]] [-q] [-u <upload-pack>] [-o <name>] [-n] <repo> [<dir>]"
13 exit 1
14}
15get_repo_base() {
17 (cd "$1" && (cd .git ; pwd)) 2> /dev/null
18}
19if [ -n "$GIT_SSL_NO_VERIFY" ]; then
21 curl_extra_args="-k"
22fi
23http_fetch () {
25 # $1 = Remote, $2 = Local
26 curl -nsfL $curl_extra_args "$1" >"$2"
27}
28clone_dumb_http () {
30 # $1 - remote, $2 - local
31 cd "$2" &&
32 clone_tmp='.git/clone-tmp' &&
33 mkdir -p "$clone_tmp" || exit 1
34 http_fetch "$1/info/refs" "$clone_tmp/refs" || {
35 echo >&2 "Cannot get remote repository information.
36Perhaps git-update-server-info needs to be run there?"
37 exit 1;
38 }
39 while read sha1 refname
40 do
41 name=`expr "$refname" : 'refs/\(.*\)'` &&
42 case "$name" in
43 *^*) ;;
44 *)
45 git-http-fetch -v -a -w "$name" "$name" "$1/" || exit 1
46 esac
47 done <"$clone_tmp/refs"
48 rm -fr "$clone_tmp"
49}
50quiet=
52use_local=no
53local_shared=no
54no_checkout=
55upload_pack=
56naked=
57origin=origin
58while
59 case "$#,$1" in
60 0,*) break ;;
61 *,-n|*,--no|*,--no-|*,--no-c|*,--no-ch|*,--no-che|*,--no-chec|\
62 *,--no-check|*,--no-checko|*,--no-checkou|*,--no-checkout)
63 no_checkout=yes ;;
64 *,--na|*,--nak|*,--nake|*,--naked) naked=yes ;;
65 *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
66 *,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared)
67 local_shared=yes; use_local=yes ;;
68 *,-q|*,--quiet) quiet=-q ;;
69 1,-o) usage;;
70 *,-o)
71 git-check-ref-format "$2" || {
72 echo >&2 "'$2' is not suitable for a branch name"
73 exit 1
74 }
75 origin="$2"; shift
76 ;;
77 1,-u|1,--upload-pack) usage ;;
78 *,-u|*,--upload-pack)
79 shift
80 upload_pack="--exec=$1" ;;
81 *,-*) usage ;;
82 *) break ;;
83 esac
84do
85 shift
86done
87# --naked implies --no-checkout
89test -z "$naked" || no_checkout=yes
90# Turn the source into an absolute path if
92# it is local
93repo="$1"
94local=no
95if base=$(get_repo_base "$repo"); then
96 repo="$base"
97 local=yes
98fi
99dir="$2"
101# Try using "humanish" part of source repo if user didn't specify one
102[ -z "$dir" ] && dir=$(echo "$repo" | sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*/||g')
103[ -e "$dir" ] && echo "$dir already exists." && usage
104mkdir -p "$dir" &&
105D=$(cd "$dir" && pwd) &&
106case "$naked" in
107yes) GIT_DIR="$D" ;;
108*) GIT_DIR="$D/.git" ;;
109esac && export GIT_DIR && git-init-db || usage
110case "$naked" in
111yes)
112 GIT_DIR="$D" ;;
113*)
114 GIT_DIR="$D/.git" ;;
115esac
116# We do local magic only when the user tells us to.
118case "$local,$use_local" in
119yes,yes)
120 ( cd "$repo/objects" ) || {
121 echo >&2 "-l flag seen but $repo is not local."
122 exit 1
123 }
124 case "$local_shared" in
126 no)
127 # See if we can hardlink and drop "l" if not.
128 sample_file=$(cd "$repo" && \
129 find objects -type f -print | sed -e 1q)
130 # objects directory should not be empty since we are cloning!
132 test -f "$repo/$sample_file" || exit
133 l=
135 if ln "$repo/$sample_file" "$GIT_DIR/objects/sample" 2>/dev/null
136 then
137 l=l
138 fi &&
139 rm -f "$GIT_DIR/objects/sample" &&
140 cd "$repo" &&
141 find objects -depth -print | cpio -puamd$l "$GIT_DIR/" || exit 1
142 ;;
143 yes)
144 mkdir -p "$GIT_DIR/objects/info"
145 {
146 test -f "$repo/objects/info/alternates" &&
147 cat "$repo/objects/info/alternates";
148 echo "$repo/objects"
149 } >"$GIT_DIR/objects/info/alternates"
150 ;;
151 esac
152 # Make a duplicate of refs and HEAD pointer
154 HEAD=
155 if test -f "$repo/HEAD"
156 then
157 HEAD=HEAD
158 fi
159 (cd "$repo" && tar cf - refs $HEAD) |
160 (cd "$GIT_DIR" && tar xf -) || exit 1
161 ;;
162*)
163 case "$repo" in
164 rsync://*)
165 rsync $quiet -av --ignore-existing \
166 --exclude info "$repo/objects/" "$GIT_DIR/objects/" &&
167 rsync $quiet -av --ignore-existing \
168 --exclude info "$repo/refs/" "$GIT_DIR/refs/" || exit
169 # Look at objects/info/alternates for rsync -- http will
171 # support it natively and git native ones will do it on the
172 # remote end. Not having that file is not a crime.
173 rsync -q "$repo/objects/info/alternates" \
174 "$GIT_DIR/TMP_ALT" 2>/dev/null ||
175 rm -f "$GIT_DIR/TMP_ALT"
176 if test -f "$GIT_DIR/TMP_ALT"
177 then
178 ( cd "$D" &&
179 . git-parse-remote &&
180 resolve_alternates "$repo" <"$GIT_DIR/TMP_ALT" ) |
181 while read alt
182 do
183 case "$alt" in 'bad alternate: '*) die "$alt";; esac
184 case "$quiet" in
185 '') echo >&2 "Getting alternate: $alt" ;;
186 esac
187 rsync $quiet -av --ignore-existing \
188 --exclude info "$alt" "$GIT_DIR/objects" || exit
189 done
190 rm -f "$GIT_DIR/TMP_ALT"
191 fi
192 ;;
193 http://*)
194 clone_dumb_http "$repo" "$D"
195 ;;
196 *)
197 cd "$D" && case "$upload_pack" in
198 '') git-clone-pack $quiet "$repo" ;;
199 *) git-clone-pack $quiet "$upload_pack" "$repo" ;;
200 esac || {
201 echo >&2 "clone-pack from '$repo' failed."
202 exit 1
203 }
204 ;;
205 esac
206 ;;
207esac
208cd "$D" || exit
210if test -f "$GIT_DIR/HEAD"
212then
213 head_points_at=`git-symbolic-ref HEAD`
214 case "$head_points_at" in
215 refs/heads/*)
216 head_points_at=`expr "$head_points_at" : 'refs/heads/\(.*\)'`
217 mkdir -p "$GIT_DIR/remotes" &&
218 echo >"$GIT_DIR/remotes/origin" \
219 "URL: $repo
220Pull: $head_points_at:$origin" &&
221 git-update-ref "refs/heads/$origin" $(git-rev-parse HEAD) &&
222 (cd "$GIT_DIR" && find "refs/heads" -type f -print) |
223 while read ref
224 do
225 head=`expr "$ref" : 'refs/heads/\(.*\)'` &&
226 test "$head_points_at" = "$head" ||
227 test "$origin" = "$head" ||
228 echo "Pull: ${head}:${head}"
229 done >>"$GIT_DIR/remotes/origin"
230 esac
231 case "$no_checkout" in
233 '')
234 git checkout
235 esac
236fi