count-delta: match get_delta_hdr_size() changes.

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index 55db795843514571450acf7da600b6aba10c15d4..025ef2d5f6b37d89dab1d602e1d8d1a80ab7f42e 100755 (executable)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -1,10 +1,9 @@
 #!/bin/sh
 #
-# Set up GIT_DIR and GIT_OBJECT_DIRECTORY
-# and return true if everything looks ok
-#
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
+# This is included in commands that either have to be run from the toplevel
+# of the repository, or with GIT_DIR environment variable properly.
+# If the GIT_DIR does not look like the right correct git-repository,
+# it dies.
 
 # Having this variable in your environment would break scripts because
 # you would cause "cd" to be be taken to unexpected places.  If you
@@ -13,10 +12,40 @@
 unset CDPATH
 
 die() {
-       echo "$@" >&2
+       echo >&2 "$@"
        exit 1
 }
 
-[ -h "$GIT_DIR/HEAD" ] &&
-[ -d "$GIT_DIR/refs" ] &&
-[ -d "$GIT_OBJECT_DIRECTORY/00" ]
+usage() {
+       die "Usage: $0 $USAGE"
+}
+
+if [ -z "$LONG_USAGE" ]
+then
+       LONG_USAGE="Usage: $0 $USAGE"
+else
+       LONG_USAGE="Usage: $0 $USAGE
+
+$LONG_USAGE"
+fi
+
+case "$1" in
+       --h|--he|--hel|--help)
+       echo "$LONG_USAGE"
+       exit
+esac
+
+if [ -z "$SUBDIRECTORY_OK" ]
+then
+       : ${GIT_DIR=.git}
+       : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
+
+       # Make sure we are in a valid repository of a vintage we understand.
+       GIT_DIR="$GIT_DIR" git repo-config --get core.nosuch >/dev/null
+       if test $? = 128
+       then
+           exit
+       fi
+else
+       GIT_DIR=$(git-rev-parse --git-dir) || exit
+fi