git-fetch: allow updating the current branch in a bare repository.
[git/git.git] / git-sh-setup.sh
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1#!/bin/sh
2#
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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.
b33e9666 7
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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.
12unset CDPATH
13
b33e9666 14die() {
8098a178 15 echo >&2 "$@"
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16 exit 1
17}
18
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19usage() {
20 die "Usage: $0 $USAGE"
21}
22
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23set_reflog_action() {
24 if [ -z "${GIT_REFLOG_ACTION:+set}" ]
25 then
26 GIT_REFLOG_ACTION="$*"
27 export GIT_REFLOG_ACTION
28 fi
29}
30
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31is_bare_repository () {
32 git-repo-config --bool --get core.bare ||
33 case "$GIT_DIR" in
34 .git | */.git) echo false ;;
35 *) echo true ;;
36 esac
37}
38
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39if [ -z "$LONG_USAGE" ]
40then
41 LONG_USAGE="Usage: $0 $USAGE"
42else
43 LONG_USAGE="Usage: $0 $USAGE
44
45$LONG_USAGE"
46fi
47
48case "$1" in
cad1ed95 49 -h|--h|--he|--hel|--help)
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50 echo "$LONG_USAGE"
51 exit
52esac
53
c8769f76 54# Make sure we are in a valid repository of a vintage we understand.
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55if [ -z "$SUBDIRECTORY_OK" ]
56then
57 : ${GIT_DIR=.git}
c8769f76 58 GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || exit
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59else
60 GIT_DIR=$(git-rev-parse --git-dir) || exit
61fi
c8769f76 62: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}