#!/bin/bash
#  versions - __package__ version number management

set -e


######
# Versions

version_parts() {
	local version=$1
	local major minor_micro
	major=${version%%.*}
	minor_micro=${version#*.}
	echo "$major" "${minor_micro%.*}" "${minor_micro#*.}"
}

version_bump() {
	has_args 2 "$@"
	local version=$1
	local part=$2

	local -a parts
	parts=( $(version_parts "$version") )

	case "$part" in
	micro) parts=( "${parts[0]}" "${parts[1]}" "$((${parts[2]} + 1))" ) ;;
	minor) parts=( "${parts[0]}" "$((${parts[1]} + 1))" 0 ) ;;
	major) parts=( "$((${parts[0]} + 1))" 0 0 ) ;;
	*) error "$part: unknown version component" ;;
	esac

	echo "${parts[0]}.${parts[1]}.${parts[2]}"
}