ros2_ws_get_version

#!/bin/bash

set -e

# This gets the version of the packages

# Arguments parsing
# Example:
# ./ros2_ws_get_version --src="./ros/src"
help() {
usage="$(basename "$0") --src=<SRC> [ --help ]

Get version to check

Arguments:
--help   Show this help text
--src    Source folder of all ros packages (mandatory)
"
    echo "${usage}"
}

for i in "$@"
do
case $i in
    --src=*)
    SRC="${i#*=}"
    shift # past argument=value
    ;;
    --help)
    HELP=YES
    shift # past argument with no value
    ;;
    *)
    # unknown option
    ;;
esac
done

# Arguments check
if [ -n "${HELP}" ]; then
    help
    exit 0
fi

if [ -z "${SRC}" ]; then
    help
    exit 1
fi

# Will throw an error if not installed
if ! command -v xmllint &> /dev/null
then
    echo "xmllint could not be found. Please install it"
    exit 1
fi

# Checking package.xml

result=$(find "${SRC}" -name package.xml -exec xmllint --xpath 'package/version/text()' {} \; |  tr '\n' ' ')

array=()
IFS=', ' read -r -a array <<< "${result}"

version="${array[0]}"

echo "${version}"