regen

#!/usr/bin/env ruby
require 'yaml'
require 'trollop'
require 'logger'
require 'erubis'

logger = Logger.new($stdout)
logger.formatter = proc { |severity, datetime, progname, msg|
  "#{severity[0]} #{datetime.strftime('%F %H:%M:%S')}: #{msg}\n"
}

def version_string(hash)
  "%d.%d.%d" % [hash[:major].to_i, hash[:minor].to_i, hash[:patch].to_i]
end

opts = Trollop.options do
  opt :major, "Bump major version", :default => false
  opt :minor, "Bump minor version", :short => 'n', :default => false
  opt :patch, "Bump patch version", :short => 'p', :default => false
  opt :view,  "View results (do not save)", :default => false
end

version = YAML.load_file("./VERSION.yml")
old_version = version.dup

[:major, :minor, :patch].each do |field|
  version[field] += 1 if opts[field]
end

if version_string(version) != version_string(old_version)
  logger.info("Version updated: %s -> %s" % [version_string(old_version), version_string(version)])
  unless opts[:view]
    File.open("./VERSION.yml", "w") do |file|
      file.puts version.to_yaml
    end
  end
end

gemspec = Erubis::Eruby.new(File.read('migratrix.gemspec.eruby')).result(:version => version)
if opts[:view]
  logger.info "new gemspec:\n" + gemspec
else
  logger.info "writing new gemspec."
  File.open("migratrix.gemspec", "w") do |file|
    file.puts gemspec
  end
end