Copy & adapt rake infrastructure from swiftgen projects

rakelib/changelog.rake

@@ -1,34 +1,56 @@
-NEW_CHANGELOG_SECTION = "## Master\n" + ['Breaking', 'Enhancements', 'Deprecations', 'Bug Fixes', 'Internal Changes'].map do |s|
-  <<~MARKDOWN
+# frozen_string_literal: true
 
-    ### #{s}
-    
-    _None_
-  MARKDOWN
-end.join
+# Used constants:
+# _none_
 
-def changelog_first_section
-  content = []
-  section_count = 0
-  File.foreach(CHANGELOG_FILE) do |line|
-    section_count += 1 if line.start_with?('## ')
-    break if section_count > 1
-    content.append(line) if section_count == 1
-  end
-  content[1..].join
-end
+require_relative 'check_changelog'
 
 namespace :changelog do
-  # rake changelog:reset
-  desc "Add a new empty section at the top of the changelog and git push it"
+  desc 'Add the empty CHANGELOG entries after a new release'
   task :reset do
-    header "Reset CHANGELOG"
-    content = File.read(CHANGELOG_FILE)
-    new_content = NEW_CHANGELOG_SECTION + "\n" + content
-    File.write(CHANGELOG_FILE, new_content)
+    changelog = File.read('CHANGELOG.md')
+    abort('A Master entry already exists') if changelog =~ /^##\s*Master$/
+    changelog.sub!(/^##[^#]/, "#{header}\\0")
+    File.write('CHANGELOG.md', changelog)
+  end
 
-    sh("git", "add", CHANGELOG_FILE)
-    sh("git", "commit", "-m", "Reset CHANGELOG")
-    sh("git", "push")
+  def header
+    <<-HEADER.gsub(/^\s*\|/, '')
+      |## Master
+      |
+      |### Breaking
+      |
+      |_None_
+      |
+      |### Enhancements
+      |
+      |_None_
+      |
+      |### Deprecations
+      |
+      |_None_
+      |
+      |### Bug Fixes
+      |
+      |_None_
+      |
+      |### Internal Changes
+      |
+      |_None_
+      |
+    HEADER
+  end
+
+  desc 'Check if links to issues and PRs use matching numbers between text & link'
+  task :check do
+    warnings = check_changelog
+    if warnings.empty?
+      puts "\u{2705}  All entries seems OK (end with period + 2 spaces, correct links)"
+    else
+      puts "\u{274C}  Some warnings were found:\n" + Array(warnings.map do |warning|
+        " - Line #{warning[:line]}: #{warning[:message]}"
+      end).join("\n")
+      exit 1
+    end
   end
 end