add github release body generator

.travis.yml

@@ -45,8 +45,9 @@ deploy:
     tags: true
 
 after_deploy:
-  - export BODY="$(.travis/changelog.sh)"
-  - echo "$BODY"
+  - .travis/changelog.sh > changelog
+  - cat changelog
+  - ruby .travis/github_release.rb -c $GITHUB_TOKEN -r $TRAVIS_REPO_SLUG -c changelog -t $TRAVIS_TAG
 
 env:
   global:

.travis/github_release.rb

@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+
+require 'optparse'
+require 'octokit'
+
+options = {}
+OptionParser.new do |opt|
+  opt.on('-s', '--secret SECRET', 'GitHub access token') { |o| options[:secret] = o }
+  opt.on('-r', '--repo-slug REPO_SLUG', 'Repo slug. i.e.: apple/swift') { |o| options[:repo_slug] = o }
+  opt.on('-c', '--changelog-file CHANGELOG_FILE', 'Changelog path') { |o| options[:changelog_file] = o }
+  opt.on('-t', '--tag TAG', 'Tag name') { |o| options[:tag_name] = o }
+end.parse!
+
+raise OptionParser::MissingArgument if options[:secret].nil?
+raise OptionParser::MissingArgument if options[:repo_slug].nil?
+raise OptionParser::MissingArgument if options[:changelog_file].nil?
+raise OptionParser::MissingArgument if options[:tag_name].nil?
+
+client = Octokit::Client.new(:access_token => options[:secret])
+user = client.user
+user.login
+
+unless client.scopes.include? 'public_repo' or client.scopes.include? 'repo'
+  raise Error, "Insufficient permissions. Make sure your token contains the repo or public_repo scope."
+end
+
+puts "Logged in as #{user.name}"
+puts "Deploying to repo: #{options[:repo_slug]}"
+
+tag_matched = false
+release_url = nil
+releases = client.releases(options[:repo_slug])
+body = File.open(options[:changelog_file], "rb").read
+
+releases.each do |release|
+  if release.tag_name == options[:tag_name]
+    release_url = release.rels[:self].href
+    tag_matched = true
+  end
+end
+
+# if tag has been pushed directly to git, create a github release
+if tag_matched == false
+  client.create_release(options[:repo_slug], options[:tag_name], { :name => options[:tag_name], :body => body })
+else
+  client.update_release(release_url, { :name => options[:tag_name], :body => body })
+end