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[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.
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
14 die() {
15         echo >&2 "$@"
16         exit 1
17 }
19 usage() {
20         die "Usage: $0 $USAGE"
21 }
23 if [ -z "$LONG_USAGE" ]
24 then
25         LONG_USAGE="Usage: $0 $USAGE"
26 else
27         LONG_USAGE="Usage: $0 $USAGE
29 $LONG_USAGE"
30 fi
32 case "$1" in
33         -h|--h|--he|--hel|--help)
34         echo "$LONG_USAGE"
35         exit
36 esac
38 # Make sure we are in a valid repository of a vintage we understand.
39 if [ -z "$SUBDIRECTORY_OK" ]
40 then
41         : ${GIT_DIR=.git}
42         GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || exit
43 else
44         GIT_DIR=$(git-rev-parse --git-dir) || exit
45 fi
46 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}