external/bsd/atf/dist/admin/choose-revision.sh

   1 #! /bin/sh
   2 #
   3 # Automated Testing Framework (atf)
   4 #
   5 # Copyright (c) 2009 The NetBSD Foundation, Inc.
   6 # All rights reserved.
   7 #
   8 # Redistribution and use in source and binary forms, with or without
   9 # modification, are permitted provided that the following conditions
  10 # are met:
  11 # 1. Redistributions of source code must retain the above copyright
  12 #    notice, this list of conditions and the following disclaimer.
  13 # 2. Redistributions in binary form must reproduce the above copyright
  14 #    notice, this list of conditions and the following disclaimer in the
  15 #    documentation and/or other materials provided with the distribution.
  16 #
  17 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  18 # CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  19 # INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  20 # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21 # IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  22 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  24 # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  26 # IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  27 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  28 # IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 #
  30
  31 set -e
  32
  33 Prog_Name=${0##*/}
  34
  35 #
  36 # err message
  37 #
  38 err() {
  39     echo "${Prog_Name}: ${@}" 1>&2
  40     exit 1
  41 }
  42
  43 #
  44 # do_cp
  45 #
  46 # Verbose copy.
  47 #
  48 do_cp() {
  49     echo "${Prog_Name}: cp -p ${1} ${2}"
  50     cp -p ${1} ${2}
  51 }
  52
  53 #
  54 # main
  55 #
  56 # Entry point.
  57 #
  58 main() {
  59     [ ${#} -eq 3 ] || err "Invalid number of arguments"
  60     mtnfile=${1}
  61     distfile=${2}
  62     tgtfile=${3}
  63
  64     if [ -f ${mtnfile} ]; then
  65         cmp -s ${mtnfile} ${tgtfile} || do_cp ${mtnfile} ${tgtfile}
  66     else
  67         cmp -s ${distfile} ${tgtfile} || do_cp ${distfile} ${tgtfile}
  68     fi
  69 }
  70
  71 main "${@}"
  72
  73 # vim: syntax=sh:expandtab:shiftwidth=4:softtabstop=4
  74