Andrew's git - gitweb.git/blob

   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.
  12unset CDPATH
  13
  14die() {
  15        echo >&2 "$@"
  16        exit 1
  17}
  18
  19usage() {
  20        die "Usage: $0 $USAGE"
  21}
  22
  23set_reflog_action() {
  24        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  25        then
  26                GIT_REFLOG_ACTION="$*"
  27                export GIT_REFLOG_ACTION
  28        fi
  29}
  30
  31is_bare_repository () {
  32        git-config --bool --get core.bare ||
  33        case "$GIT_DIR" in
  34        .git | */.git) echo false ;;
  35        *) echo true ;;
  36        esac
  37}
  38
  39cd_to_toplevel () {
  40        cdup=$(git-rev-parse --show-cdup)
  41        if test ! -z "$cdup"
  42        then
  43                cd "$cdup" || {
  44                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  45                        exit 1
  46                }
  47        fi
  48}
  49
  50require_work_tree () {
  51        test $(is_bare_repository) = false &&
  52        test $(git-rev-parse --is-inside-git-dir) = false ||
  53        die "fatal: $0 cannot be used without a working tree."
  54}
  55
  56if [ -z "$LONG_USAGE" ]
  57then
  58        LONG_USAGE="Usage: $0 $USAGE"
  59else
  60        LONG_USAGE="Usage: $0 $USAGE
  61
  62$LONG_USAGE"
  63fi
  64
  65case "$1" in
  66        -h|--h|--he|--hel|--help)
  67        echo "$LONG_USAGE"
  68        exit
  69esac
  70
  71# Make sure we are in a valid repository of a vintage we understand.
  72if [ -z "$SUBDIRECTORY_OK" ]
  73then
  74        : ${GIT_DIR=.git}
  75        GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || {
  76                exit=$?
  77                echo >&2 "You need to run this command from the toplevel of the working tree."
  78                exit $exit
  79        }
  80else
  81        GIT_DIR=$(git-rev-parse --git-dir) || exit
  82fi
  83: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}