Automatic version update

.github/workflows/release.yml

@@ -41,6 +41,17 @@ jobs:
           echo "The next tag version will be: $NEW_TAG"
           echo "The current tag is: $CURR_TAG" 
 
+      - name: Add and commit updated VERSION file
+        env:
+          NEW_TAG: ${{ steps.taggerDryRun.outputs.new_tag }}
+        run: |
+          ./update_version.rb $NEW_TAG
+          git config --global user.name "GitHub Action"
+          git config --global user.email "[email protected]"
+          git add lib/ruby_ast_gen/version.rb
+          git commit -m "Update VERSION file to $NEW_TAG"
+          git push
+
       - name: Upload vendored distribution to GitHub Release
         uses: softprops/action-gh-release@v2
         env:

update_version.rb

@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+
+# Script to update the version in `lib/ruby_ast_gen/version.rb`
+require 'fileutils'
+
+VERSION_FILE_PATH = 'lib/ruby_ast_gen/version.rb'
+
+
+if ARGV.empty?
+  puts "Usage: update_version.rb <new_version>"
+  exit 1
+end
+
+new_version = ARGV[0]
+unless new_version.match?(/^v\d+\.\d+\.\d+$/)
+  puts "Invalid version format. Please provide a version in the format 'vX.X.X' (e.g., v1.0.0)."
+  exit 1
+end
+stripped_version = new_version.gsub(/^v/, '')
+
+begin
+  contents = File.read(VERSION_FILE_PATH)
+rescue Errno::ENOENT
+  puts "Error: Couldn't find the version file at #{VERSION_FILE_PATH}"
+  exit 1
+end
+
+new_contents = contents.gsub(/VERSION\s*=\s*["']\d+\.\d+\.\d+["']/, "VERSION = \"#{stripped_version}\"")
+
+begin
+  File.write(VERSION_FILE_PATH, new_contents)
+  puts "Successfully updated version to #{stripped_version} in #{VERSION_FILE_PATH}"
+rescue Errno::EACCES
+  puts "Error: Insufficient permissions to update #{VERSION_FILE_PATH}"
+  exit 1
+end