Bash/Shell script to automatically increment Mongoose OS mos.yml version numbers

bump_version.sh

#!/usr/bin/env bash

# Usage: ./bump_version.sh <major|minor|patch> - Increments the relevant version part by one.
#
# Usage 2: ./bump_version.sh <version-from> <version-to>
# 	e.g: ./bump_version.sh 1.1.1 2.0

# Specifically coded for Mac OSX
# You must install grep from brew, like this:
# brew install coreutils
# brew install grep
# This installs unix grep as "ggrep"

set -e

# Define which files to update and the pattern to look for
# $1 Current version
# $2 New version
function bump_files() {
	bump mos.yml "version: $1" "version: $2"
}

function confirm() {
	read -r -p "$@ [Y/n]: " confirm

	case "$confirm" in
		[Nn][Oo]|[Nn])
			echo "Aborting."
			exit
			;;
	esac
}

if [ "$1" == "" ]; then
	echo >&2 "No 'from' version set. Aborting."
	exit 1
fi

if [ "$1" == "major" ] || [ "$1" == "minor" ] || [ "$1" == "patch" ]; then
	current_version=$(ggrep -Po '(?<=version:\s)[^\s]*' mos.yml)

	IFS='.' read -a version_parts <<< "$current_version"

	major=${version_parts[0]}
	minor=${version_parts[1]}
	patch=${version_parts[2]}
	# Hack to deal with incorrect regex matching more than just version above
	current_version="$major.$minor.$patch"

	case "$1" in
		"major")
			major=$((major + 1))
			minor=0
			patch=0
			;;
		"minor")
			minor=$((minor + 1))
			patch=0
			;;
		"patch")
			patch=$((patch + 1))
			;;
	esac
	new_version="$major.$minor.$patch"
else
	if [ "$2" == "" ]; then
		echo >&2 "No 'to' version set. Aborting."
		exit 1
	fi
	current_version="$1"
	new_version="$2"
fi

if ! [[ "$new_version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
	echo >&2 "'to' version doesn't look like a valid semver version tag (e.g: 1.2.3). Aborting."
	exit 1
fi

#confirm "Bump version number from $current_version to $new_version?"

# bump_files "$current_version" "$new_version"

echo -n "Updating $1 in mos.yml ... from $current_version to $new_version"
sed -i '' "s/version: $current_version/version: $new_version/" mos.yml

As mentioned in comments, for example to update a version that is currently set to 1.0.0 to 1.0.1 you would use:

./bump_version.sh patch

I personally use this in an alias for when i build new versions of the firmware, something like this:

alias fwbuild='mos build --local --verbose'
alias fwbuildb='./bump_version.sh patch && mos build --local --verbose'
alias fwbuildc='mos build --local --verbose --clean'
alias fwbuildbc='./bump_version.sh patch && mos build --local --verbose --clean'

That way you can just call one of the alias in shell to do what you need ... automate all the things!