Added a Rake task for updating the version and compiling the CHANGELOG

Author: karmi

Rakefile

@@ -126,3 +126,117 @@ task :release do
     puts '-'*80
   end
 end
+
+desc <<-DESC
+  Update Rubygems versions in version.rb and *.gemspec files
+
+  Example:
+
+      $ rake update_version[5.0.0,5.0.1]
+DESC
+task :update_version, :old, :new do |task, args|
+  require 'ansi'
+
+  puts "[!!!] Required argument [old] missing".ansi(:red) unless args[:old]
+  puts "[!!!] Required argument [new] missing".ansi(:red) unless args[:new]
+
+  files = Dir['**/**/version.rb','**/**/*.gemspec']
+
+  longest_line = files.map { |f| f.size }.max
+
+  puts "\n", "= FILES ".ansi(:faint) + ('='*92).ansi(:faint), "\n"
+
+  files.each do |file|
+    begin
+      File.open(file, 'r+') do |f|
+        content = f.read
+        if content.match Regexp.new(args[:old])
+          content.gsub! Regexp.new(args[:old]), args[:new]
+          puts "+ [#{file}]".ansi(:green).ljust(longest_line+20) + " [#{args[:old]}] -> [#{args[:new]}]".ansi(:green,:bold)
+          f.rewind
+          f.write content
+        else
+          puts "- [#{file}]".ansi(:yellow).ljust(longest_line+20) + " -".ansi(:faint,:strike)
+        end
+      end
+    rescue Exception => e
+      puts "[!!!] #{e.class} : #{e.message}".ansi(:red,:bold)
+      raise e
+    end
+  end
+
+  puts "\n\n", "= CHANGELOG ".ansi(:faint) + ('='*88).ansi(:faint), "\n"
+
+  log = `git --no-pager log --reverse --no-color --pretty='* %s' HEAD --not v#{args[:old]} elasticsearch-*`.split("\n")
+
+  puts log.join("\n")
+
+  log_entries = {}
+  log_entries[:common] = log.reject { |l| l =~ /^* \[/ }
+  log_entries[:model] = log.select { |l| l =~ /^* \[MODEL\]/ }
+  log_entries[:store] = log.select { |l| l =~ /^* \[STORE\]/ }
+  log_entries[:rails] = log.select { |l| l =~ /^* \[RAILS\]/ }
+
+  changelog = File.read(File.open('CHANGELOG.md', 'r'))
+
+  changelog_update = ''
+
+  changelog_update << "## #{args[:new]}\n\n"
+
+  unless log_entries[:common].empty?
+    changelog_update << log_entries[:common]
+                          .map { |l| "#{l}" }
+                          .join("\n")
+    changelog_update << "\n\n"
+  end
+
+  unless log_entries[:model].empty?
+    changelog_update << "### ActiveModel\n\n"
+    changelog_update << log_entries[:model]
+                          .map { |l| l.gsub /\[.+\] /, '' }
+                          .map { |l| "#{l}" }
+                          .join("\n")
+    changelog_update << "\n\n"
+  end
+
+  unless log_entries[:store].empty?
+    changelog_update << "### Persistence\n\n"
+    changelog_update << log_entries[:store]
+                          .map { |l| l.gsub /\[.+\] /, '' }
+                          .map { |l| "#{l}" }
+                          .join("\n")
+    changelog_update << "\n\n"
+  end
+
+  unless log_entries[:rails].empty?
+    changelog_update << "### Ruby on Rails\n\n"
+    changelog_update << log_entries[:rails]
+                          .map { |l| l.gsub /\[.+\] /, '' }
+                          .map { |l| "#{l}" }
+                          .join("\n")
+    changelog_update << "\n\n"
+  end
+
+  unless changelog =~ /^## #{args[:new]}/
+    File.open('CHANGELOG.md', 'w+') { |f| f.write changelog_update and f.write changelog }
+  end
+
+  puts "\n\n", "= DIFF ".ansi(:faint) + ('='*93).ansi(:faint)
+
+  diff = `git --no-pager diff --patch --word-diff=color --minimal elasticsearch-*`.split("\n")
+
+  puts diff
+          .reject { |l| l =~ /^\e\[1mdiff \-\-git/ }
+          .reject { |l| l =~ /^\e\[1mindex [a-z0-9]{7}/ }
+          .reject { |l| l =~ /^\e\[1m\-\-\- i/ }
+          .reject { |l| l =~ /^\e\[36m@@/ }
+          .map    { |l| l =~ /^\e\[1m\+\+\+ w/ ? "\n#{l}   " + '-'*(104-l.size) : l }
+          .join("\n")
+
+  puts "\n\n", "= COMMIT ".ansi(:faint) + ('='*91).ansi(:faint), "\n"
+
+  puts  "git add CHANGELOG.md elasticsearch-*",
+        "git commit --verbose --message='Release #{args[:new]}' --edit",
+        "rake release"
+        "\n"
+end