cook-scm-ver.rb

#!/usr/bin/env ruby
#
# Wrap thor-scmver to build metadata
#
require 'thor-scmversion'

module ThorSCMVersion
  class Tasks < Thor
    namespace "version"

    desc "bump TYPE [PRERELEASE_TYPE]", "Bump version number (type is major, minor, patch, prerelease or auto)"
    method_option :default, type: :string, aliases: "-d"
    def bump(type, prerelease_type = nil)
      if type == 'auto'
        type = process_body
      end
      current_version.bump! type, options.merge(prerelease_type: prerelease_type)
      begin
        say "Updating metadata and changelog", :yellow
        write_metadata_and_changelog
        say "Creating and pushing tags", :yellow
        current_version.tag
        say "Writing files: #{version_files.join(', ')}", :yellow
        write_version
        say "Tagged: #{current_version}", :green
      rescue => e
        say "Tagging #{current_version} failed due to error", :red
        say e.to_s, :red
        if e.respond_to? :status_code
          exit e.status_code
        else
          exit 1
        end
      end
    end

    private

    # we're auto-incrementing over the entire commit body message
    def process_body
      log = ShellUtils.sh('git log -1 --pretty=%B')
      if log =~ /#major/
        return 'major'
      elsif log =~ /#minor/
        return 'minor'
      elsif log =~ /#noversion/
        say "#noversion in commit message, nothing to do here", :yellow
        exit
      else
        return 'patch'
      end
    end

    def write_metadata_and_changelog
      content = parse_metadata
      File.open("metadata.rb", 'w') {|file| file.write content }
      content = parse_changelog
      File.open("CHANGELOG.md", 'w') {|file| file.write content }
      ShellUtils.sh "git add metadata.rb CHANGELOG.md"
      ShellUtils.sh "git commit -m 'auto_version to #{current_version}'"
      ShellUtils.sh "git push origin master"
      ShellUtils.sh "git stash"
    end

    def parse_metadata
      content = ""
      File.open("metadata.rb") do |f|
        while line = f.gets
          if  line =~ /^\s*version\s+.*/
            content << "version '#{current_version}'\n"
            next
          end
          content << line
        end
      end
      content
    end

    def parse_changelog
      content = ""
      inserted = false
      File.open("CHANGELOG.md") do |f|
        while line = f.gets
          if  line =~ /^## / && !inserted
            content << "## #{current_version}:\n"
            content << "* #{ShellUtils.sh 'git log -1 --pretty=%s'}\n"
            content << line
            inserted = true
            next
          end
          content << line
        end
      end
      content
    end

  end
end

ThorSCMVersion::Tasks.start