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 $USAGE"
  21 }
  22
  23 if [ -z "$LONG_USAGE" ]
  24 then
  25         LONG_USAGE="Usage: $0 $USAGE"
  26 else
  27         LONG_USAGE="Usage: $0 $USAGE
  28
  29 $LONG_USAGE"
  30 fi
  31
  32 case "$1" in
  33         --h|--he|--hel|--help)
  34         echo "$LONG_USAGE"
  35         exit
  36 esac
  37
  38 if [ -z "$SUBDIRECTORY_OK" ]
  39 then
  40         : ${GIT_DIR=.git}
  41         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
  42
  43         # Make sure we are in a valid repository of a vintage we understand.
  44         GIT_DIR="$GIT_DIR" git repo-config --get core.nosuch >/dev/null
  45         if test $? = 128
  46         then
  47             exit
  48         fi
  49 else
  50         GIT_DIR=$(git-rev-parse --git-dir) || exit
  51 fi