#!/usr/bin/env bash

################################################################################

# This tool fetches versions and checksums of build tools from the .TOOLVERSIONS

# file in project root. This is then used by various setup scripts,

# and most importantly by Dockerfiles.

################################################################################

set -e

GIT_ROOT=$(git rev-parse --show-toplevel)

TOOL_VERSIONS_FILE="${GIT_ROOT}/.TOOLVERSIONS"

usage () {

echo "Usage: toolversion [-c] <name>" >&2

echo

echo "This script extracts tooling versions from ${TOOL_VERSIONS_FILE}"

exit 0

}

# some options parsing

while getopts ":ch" opt; do

case $opt in

c) CHECKSUM=1; shift ;;

h) usage;;

\?) echo "Invalid option: -$OPTARG" >&2; exit 1;;

esac

done

# verify the main argument was given

if [[ -z "${1}" ]]; then usage; fi

NAME=${1}

getColumn () {

local value=$(awk -F';' "/^${NAME};/{print \$${1}}" "${TOOL_VERSIONS_FILE}")

[ -z "$value" ] && echo "\nUnexpected missing value for ${NAME} in ${TOOL_VERSIONS_FILE}" && exit 1

echo $value

}

if [[ $CHECKSUM ]]; then

getColumn 3

else

getColumn 2

fi