aboutsummaryrefslogtreecommitdiff
path: root/git-clone-script
blob: 99c2459631f2bdcc6382bd2b5fc03090e1888ee3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
#!/bin/sh
#
# Copyright (c) 2005, Linus Torvalds
# Copyright (c) 2005, Junio C Hamano
# 
# Clone a repository into a different directory that does not yet exist.

usage() {
	echo >&2 "* git clone [-l [-s]] [-q] [-u <upload-pack>] <repo> <dir>"
	exit 1
}

get_repo_base() {
	(cd "$1" && (cd .git ; pwd)) 2> /dev/null
}

quiet=
use_local=no
local_shared=no
upload_pack=
while
	case "$#,$1" in
	0,*) break ;;
	*,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
        *,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared) 
          local_shared=yes ;;
	*,-q|*,--quiet) quiet=-q ;;
	1,-u|1,--upload-pack) usage ;;
	*,-u|*,--upload-pack)
		shift
		upload_pack="--exec=$1" ;;
	*,-*) usage ;;
	*) break ;;
	esac
do
	shift
done

# Turn the source into an absolute path if
# it is local
repo="$1"
local=no
if base=$(get_repo_base "$repo"); then
	repo="$base"
	local=yes
fi

dir="$2"
mkdir "$dir" &&
D=$(
	(cd "$dir" && git-init-db && pwd)
) &&
test -d "$D" || usage

# We do local magic only when the user tells us to.
case "$local,$use_local" in
yes,yes)
	( cd "$repo/objects" ) || {
		echo >&2 "-l flag seen but $repo is not local."
		exit 1
	}

	case "$local_shared" in
	no)
	    # See if we can hardlink and drop "l" if not.
	    sample_file=$(cd "$repo" && \
			  find objects -type f -print | sed -e 1q)

	    # objects directory should not be empty since we are cloning!
	    test -f "$repo/$sample_file" || exit

	    l=
	    if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
	    then
		    l=l
	    fi &&
	    rm -f "$D/.git/objects/sample" &&
	    cd "$repo" &&
	    find objects -type f -print |
	    cpio -puamd$l "$D/.git/" || exit 1
	    ;;
	yes)
	    mkdir -p "$D/.git/objects/info"
	    {
		test -f "$repo/objects/info/alternates" &&
		cat "$repo/objects/info/alternates";
		echo "$repo/objects"
	    } >"$D/.git/objects/info/alternates"
	    ;;
	esac

	# Make a duplicate of refs and HEAD pointer
	HEAD=
	if test -f "$repo/HEAD"
	then
		HEAD=HEAD
	fi
	tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
	;;
*)
	case "$repo" in
	rsync://*)
		rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
		rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
		;;
	http://*)
		git-clone-dumb-http "$repo" "$D"
		case "$?" in
		2)
			echo "Somebody should define smarter http server protocol" >&2
			exit 1
			;;
		0)
			;;
		*)
			exit
		esac
		;;
	*)
		cd "$D" && case "$upload_pack" in
		'') git-clone-pack $quiet "$repo" ;;
		*) git-clone-pack $quiet "$upload_pack" "$repo" ;;
		esac
		;;
	esac
	;;
esac

# Update origin.
mkdir -p "$D/.git/branches/" &&
rm -f "$D/.git/branches/origin" &&
echo "$repo" >"$D/.git/branches/origin"