build.rb

#! /usr/bin/env ruby
# coding: utf-8

require "fileutils"
require "nokogiri"

def sh(command)
  puts "⇒ #{command}"
  system(command) || raise("command failed")
end

name = "nekohtml"
readme_url = "https://github.com/sparklemotion/nekohtml"
build_file = "build.xml"
pom_file = "pom.xml"
generated_jar = "build/lib/#{name}.jar"
bundle_dir = "bundle"

# check version
build_xml = File.read(build_file)
build_doc = Nokogiri::XML::Document.parse(build_xml)
build_version_node = build_doc.at_xpath("/project/property[@name='version']")
build_version = build_version_node["value"]

pom_xml = File.read(pom_file)
pom_doc = Nokogiri::XML::Document.parse(pom_xml)
pom_version_node = pom_doc.at_xpath("/project/version")
pom_version = pom_version_node.content

raise "Fix versions #{build_version} vs #{pom_version}" unless build_version == pom_version
puts "building #{build_version}"

# build
sh "ant -f #{build_file}"

# assemble files
target_name = "#{name}-#{build_version}"
FileUtils.rm_rf(bundle_dir, verbose: true)
FileUtils.mkdir_p(bundle_dir, verbose: true)
FileUtils.cp(pom_file, bundle_dir, verbose: true)
FileUtils.cp(generated_jar, File.join(bundle_dir, "#{target_name}.jar"), verbose: true)

File.open(File.join(bundle_dir, "README"), "w") { |f| f.write readme_url }
Dir.chdir(bundle_dir) do
  sh "jar -cvf #{target_name}-javadoc.jar README"
  sh "jar -cvf #{target_name}-sources.jar README"
end

# sign files
Dir.chdir(bundle_dir) do
  sh "gpg -ab #{target_name}.jar"
  sh "gpg -ab #{target_name}-sources.jar"
  sh "gpg -ab #{target_name}-javadoc.jar"
  sh "gpg -ab #{pom_file}"
end

# bundle
Dir.chdir(bundle_dir) do
  sh "jar -cvf bundle.jar #{target_name}*.jar* #{pom_file}*"
end