Teach rev-list since..til notation.
[git] / git-clone-script
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
8 usage() {
9         echo >&2 "* git clone [-l] [-q] [-u <upload-pack>] <repo> <dir>"
10         exit 1
11 }
12
13 get_repo_base() {
14         (cd "$1" && (cd .git ; pwd)) 2> /dev/null
15 }
16
17 quiet=
18 use_local=no
19 upload_pack=
20 while
21         case "$#,$1" in
22         0,*) break ;;
23         *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
24         *,-q|*,--quiet) quiet=-q ;;
25         1,-u|1,--upload-pack) usage ;;
26         *,-u|*,--upload-pack)
27                 shift
28                 upload_pack="--exec=$1" ;;
29         *,-*) usage ;;
30         *) break ;;
31         esac
32 do
33         shift
34 done
35
36 # Turn the source into an absolute path if
37 # it is local
38 repo="$1"
39 local=no
40 if base=$(get_repo_base "$repo"); then
41         repo="$base"
42         local=yes
43 fi
44
45 dir="$2"
46 mkdir "$dir" &&
47 D=$(
48         (cd "$dir" && git-init-db && pwd)
49 ) &&
50 test -d "$D" || usage
51
52 # We do local magic only when the user tells us to.
53 case "$local,$use_local" in
54 yes,yes)
55         ( cd "$repo/objects" ) || {
56                 echo >&2 "-l flag seen but $repo is not local."
57                 exit 1
58         }
59
60         # See if we can hardlink and drop "l" if not.
61         sample_file=$(cd "$repo" && \
62                       find objects -type f -print | sed -e 1q)
63
64         # objects directory should not be empty since we are cloning!
65         test -f "$repo/$sample_file" || exit
66
67         l=
68         if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
69         then
70                 l=l
71         fi &&
72         rm -f "$D/.git/objects/sample" &&
73         cd "$repo" &&
74         find objects -type f -print |
75         cpio -puamd$l "$D/.git/" || exit 1
76
77         # Make a duplicate of refs and HEAD pointer
78         HEAD=
79         if test -f "$repo/HEAD"
80         then
81                 HEAD=HEAD
82         fi
83         tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
84         ;;
85 *)
86         case "$repo" in
87         rsync://*)
88                 rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
89                 rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
90                 ;;
91         http://*)
92                 git-clone-dumb-http "$repo" "$D"
93                 case "$?" in
94                 2)
95                         echo "Somebody should define smarter http server protocol" >&2
96                         exit 1
97                         ;;
98                 0)
99                         ;;
100                 *)
101                         exit
102                 esac
103                 ;;
104         *)
105                 cd "$D" && case "$upload_pack" in
106                 '') git-clone-pack $quiet "$repo" ;;
107                 *) git-clone-pack $quiet "$upload_pack" "$repo" ;;
108                 esac
109                 ;;
110         esac
111         ;;
112 esac
113
114 # Update origin.
115 mkdir -p "$D/.git/branches/" &&
116 rm -f "$D/.git/branches/origin" &&
117 echo "$repo" >"$D/.git/branches/origin"