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#!/usr/bin/env bash
#
# @license Apache-2.0
#
# Copyright (c) 2017 The Stdlib Authors.
#
# 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.
# A Git hook called by `git merge`, which runs when a `git pull` is performed on a local repository.
#
# This hook is called with the following arguments:
#
# * `$1` - status flag specifying whether or not the merge being done is a squash merge
#
# This hook cannot does __not__ affect the outcome of `git merge` and is not executed if merge fails due to conflicts.
# shellcheck disable=SC2181
# FUNCTIONS #
# Defines an error handler.
#
# $1 - error status
on_error() {
cleanup
exit "$1"
}
# Runs clean-up tasks.
cleanup() {
echo '' >&2
}
# Checks if Node.js module dependencies have changed.
check_node_deps() {
local changed_files
local package_json
echo 'Checking changed files...' >&2
# Get a list of changed files:
changed_files=$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)
# See if the root `package.json` is one of the files which changed:
package_json=$(echo "${changed_files}" | grep '^package\.json$')
# If the root `package.json` changed, return a non-zero status...
if [[ -n "${package_json}" ]]; then
echo 'Root package.json changed.' >&2
return 1
fi
return 0
}
# Installs Node.js module dependencies.
install_node_deps() {
echo 'Installing Node.js module dependencies...' >&2
make install
}
# Performs initialization tasks.
init() {
echo 'Initializing development environment...' >&2
make init
}
# Main execution sequence.
main() {
check_node_deps
if [[ "$?" -ne 0 ]]; then
install_node_deps
fi
init
cleanup
exit 0
}
# Run main:
main
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