+#!/bin/bash
+#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+
+
+set -e
+
+[ ! -z ${EXEC_MODE} ] || EXEC_MODE=false
+
+topdir="${PWD}"
+
+# Keep packageRevision in sync with extlibs/tinycbor/SConscript's setting
+# Right now this script assumes packageRevision is a tag;
+# comment out the second clause
+# if packageRevision becomes a branch or a specific commit.
+package="hippomocks"
+packageUrl="https://github.com/dascandy/hippomocks"
+packageDir="./extlibs/${package}/${package}"
+packageRevision="v5.0"
+
+
+do_()
+{
+ set +f
+ if $EXEC_MODE; then
+ echo "warning: fetching online resources may not be reproductible"
+ printf "%s \n" "trying: \"$@\""
+ eval "$@"
+ else
+cat<<EOF
+error: Something should be prepared, please manually execute from shell
+EOF
+ printf "%s \n" "$@"
+ exit 1
+ fi
+}
+
+
+main_()
+{
+ if [ ! -d "${packageDir}" ]; then
+ do_ "git clone ${packageUrl} ${packageDir} -b ${packageRevision}"
+ elif [ ! -z $(git tag -l "${packageRevision}") ]; then
+ cat<<EOF
+error: $packageDir is unaligned with supported release of ${package}
+Please update ${package} using "cd ${packageDir} && git fetch"
+For more support please refer to:
+https://wiki.iotivity.org/build
+EOF
+ exit 2
+ elif [ -d "${packageDir}/.git" ]; then
+ cd "${packageDir}"
+ git reset --hard "${packageRevision}"
+ cd -
+ rm -rf -- "${packageDir}/.git"
+ else
+ echo "log: Assuming ${package} is already on correct revision: \"${packageRevision}\""
+ fi
+}
+
+
+main_ "$@"
+