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 require_work_tree () {
  40         test $(is_bare_repository) = false ||
  41         die "fatal: $0 cannot be used without a working tree."
  42 }
  43
  44 if [ -z "$LONG_USAGE" ]
  45 then
  46         LONG_USAGE="Usage: $0 $USAGE"
  47 else
  48         LONG_USAGE="Usage: $0 $USAGE
  49
  50 $LONG_USAGE"
  51 fi
  52
  53 case "$1" in
  54         -h|--h|--he|--hel|--help)
  55         echo "$LONG_USAGE"
  56         exit
  57 esac
  58
  59 # Make sure we are in a valid repository of a vintage we understand.
  60 if [ -z "$SUBDIRECTORY_OK" ]
  61 then
  62         : ${GIT_DIR=.git}
  63         GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || {
  64                 exit=$?
  65                 echo >&2 "You need to run this command from the toplevel of the working tree."
  66                 exit $exit
  67         }
  68 else
  69         GIT_DIR=$(git-rev-parse --git-dir) || exit
  70 fi
  71 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}