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 : ${GIT_DIR=.git}
  15 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
  16
  17 die() {
  18         echo >&2 "$@"
  19         exit 1
  20 }
  21
  22 case "$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD 2>/dev/null)" in
  23 refs/*) : ;;
  24 *)      false ;;
  25 esac &&
  26 [ -d "$GIT_DIR/refs" ] &&
  27 [ -d "$GIT_OBJECT_DIRECTORY/" ] ||
  28         die "Not a git repository."