gen_tagname

#!/bin/bash

# Copyright (c) Aalyria Technologies, Inc., and its affiliates.
#
# 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

# Check no uncommitted changes.
if [ -n "$(git status --porcelain)" ]; then
    echo "Error: uncommitted changes in the working tree"
    exit 1
fi

# Check on release-* branch and extract SEMVER.
current_branch=$(git branch --show-current)
case "${current_branch}" in
    release-*)
        readonly SEMVER=${current_branch//release-/}
        ;;
    *)
        echo "Error: '${current_branch}' is not a release branch" >&2
        exit 1
esac

# Get extra pre-release metadata.
PRE_RELEASE=$(git show -s --format="%ct-%cs-SHA-%h" HEAD)

echo "${SEMVER}-${PRE_RELEASE}"