[Rakefile] Add release-related tasksseg-release-tasks

2 files changed, 83 insertions, 0 deletions

diff --git a/Rakefile b/Rakefile
index dba4d46eea..67a0ce2cda 100644
--- a/Rakefile
+++ b/Rakefile
@@ -342,3 +342,5 @@ task :build => ["man:build"]
 task :release => ["man:require", "man:build"]
 
 task :default => :spec
+
+Dir["task/*.{rb,rake}"].each(&method(:load))
diff --git a/task/release.rake b/task/release.rake
new file mode 100644
index 0000000000..c15c312994
--- /dev/null
+++ b/task/release.rake
@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+namespace :release do
+  def confirm(prompt = "")
+    loop do
+      print(prompt)
+      print(": ") unless prompt.empty?
+      break if $stdin.gets.strip == "y"
+    end
+  rescue Interrupt
+    abort
+  end
+
+  desc "Make a patch release with the specified PRs from master"
+  task :patch, :version do |_t, args|
+    version = args.version
+    prs = args.extras
+
+    version ||= begin
+      version = BUNDLER_SPEC.version
+      segments = version.segments
+      if segments.last.is_a?(String)
+        segments << "1"
+      else
+        segments[-1] += 1
+      end
+      segments.join(".")
+    end
+
+    confirm "You are about to release #{version}, currently #{BUNDLER_SPEC.version}"
+
+    version_file = "lib/bundler/version.rb"
+    version_contents = File.read(version_file)
+    unless version_contents.sub!(/^(\s*VERSION = )"#{Gem::Version::VERSION_PATTERN}"/, "\\1#{version.to_s.dump}")
+      abort "failed to update #{version_file}, is it in the expected format?"
+    end
+    File.open(version_file, "w") {|f| f.write(version_contents) }
+
+    BUNDLER_SPEC.version = version
+
+    branch = version.split(".", 3)[0, 2].push("stable").join("-")
+    sh("git", "checkout", branch)
+
+    commits = `git log --oneline origin/master --`.split("\n").map {|l| l.split(/\s/, 2) }.reverse
+    commits.select! {|_sha, message| message =~ /(Auto merge of|Merge pull request) ##{Regexp.union(*prs)}/ }
+
+    unless system("git", "cherry-pick", "-x", "-m", "1", *commits.map(&:first))
+      abort unless system("zsh")
+    end
+
+    prs.each do |pr|
+      system("open", "https://github.com/bundler/bundler/pull/#{pr}")
+      confirm "Add to the changelog"
+    end
+
+    confirm "Update changelog"
+    sh("git", "commit", "-am", "Version #{version} with changelog")
+    sh("rake", "release")
+    sh("git", "checkout", "master")
+    sh("git", "pull")
+    sh("git", "merge", "v#{version}", "--no-edit")
+    sh("git", "push")
+  end
+
+  desc "Open all PRs that have not been included in a stable release"
+  task :open_unreleased_prs do
+    def prs(on = "master")
+      commits = `git log --oneline origin/#{on} --`.split("\n")
+      commits.reverse_each.map {|c| c =~ /(Auto merge of|Merge pull request) #(\d+)/ && $2 }.compact
+    end
+
+    last_stable = `git ls-remote origin`.split("\n").map {|r| r =~ %r{refs/tags/v([\d.]+)$} && $1 }.compact.map {|v| Gem::Version.create(v) }.max
+    last_stable = last_stable.segments[0, 2].<<("stable").join("-")
+
+    in_release = prs("HEAD") - prs(last_stable)
+
+    in_release.each do |pr|
+      system("open", "https://github.com/bundler/bundler/pull/#{pr}")
+      confirm
+    end
+  end
+end