filter-flow-hotfix-start-version

#!/usr/bin/env ruby
#
# Runs during git flow hotfix start
#
# Positional arguments:
# $1    Version
#
# Return VERSION - When VERSION is returned empty, git-flow will stop as the
# version is necessary
#
# The following variables are available as they are exported by git-flow:
#
# MASTER_BRANCH - The branch defined as Master
# DEVELOP_BRANCH - The branch defined as Develop

$version = ARGV[0]

if $version.nil?
    last_tag_rev = `git rev-list --tags --max-count=1`.strip
    last_tag_name = `git describe --tags #{last_tag_rev}`.strip

    major, minor, hotfix = last_tag_name.split('.').map(&:to_i)
    $version = "%d.%d.%d" % [major, minor, hotfix + 1]
end

puts $version