git-fetch: allow updating the current branch in a bare repository.
[git/git.git] / git-sh-setup.sh
1 #!/bin/sh
2 #
3 # This is included in commands that either have to be run from the toplevel
4 # of the repository, or with GIT_DIR environment variable properly.
5 # If the GIT_DIR does not look like the right correct git-repository,
6 # it dies.
7
8 # Having this variable in your environment would break scripts because
9 # you would cause "cd" to be be taken to unexpected places. If you
10 # like CDPATH, define it for your interactive shell sessions without
11 # exporting it.
12 unset CDPATH
13
14 die() {
15 echo >&2 "$@"
16 exit 1
17 }
18
19 usage() {
20 die "Usage: $0 $USAGE"
21 }
22
23 set_reflog_action() {
24 if [ -z "${GIT_REFLOG_ACTION:+set}" ]
25 then
26 GIT_REFLOG_ACTION="$*"
27 export GIT_REFLOG_ACTION
28 fi
29 }
30
31 is_bare_repository () {
32 git-repo-config --bool --get core.bare ||
33 case "$GIT_DIR" in
34 .git | */.git) echo false ;;
35 *) echo true ;;
36 esac
37 }
38
39 if [ -z "$LONG_USAGE" ]
40 then
41 LONG_USAGE="Usage: $0 $USAGE"
42 else
43 LONG_USAGE="Usage: $0 $USAGE
44
45 $LONG_USAGE"
46 fi
47
48 case "$1" in
49 -h|--h|--he|--hel|--help)
50 echo "$LONG_USAGE"
51 exit
52 esac
53
54 # Make sure we are in a valid repository of a vintage we understand.
55 if [ -z "$SUBDIRECTORY_OK" ]
56 then
57 : ${GIT_DIR=.git}
58 GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || exit
59 else
60 GIT_DIR=$(git-rev-parse --git-dir) || exit
61 fi
62 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}