scripts/git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # This code is licensed under the GPL version 2 or later.  See
   4 # the COPYING file in the top-level directory.
   5
   6 set -e
   7
   8 substat=".git-submodule-status"
   9
  10 command=$1
  11 shift
  12 modules="$@"
  13
  14 if test -z "$modules"
  15 then
  16     test -e $substat || touch $substat
  17     exit 0
  18 fi
  19
  20 if ! test -e ".git"
  21 then
  22     echo "$0: unexpectedly called with submodules but no git checkout exists"
  23     exit 1
  24 fi
  25
  26 case "$command" in
  27 status)
  28     test -f "$substat" || exit 1
  29     trap "rm -f ${substat}.tmp" EXIT
  30     git submodule status $modules > "${substat}.tmp"
  31     diff "${substat}" "${substat}.tmp" >/dev/null
  32     exit $?
  33     ;;
  34 update)
  35     git submodule update --init $modules 1>/dev/null
  36     git submodule status $modules > "${substat}"
  37     ;;
  38 esac