update swift-format action

Author: stmitt

.github/workflows/swift-format.yml

@@ -29,23 +29,40 @@ jobs:
           git config --global --add safe.directory "$(pwd)"
           git config user.name "GitHub Actions Bot"
           git config user.email "<>"
+      - name: Check for changes
+        id: check_changes
+        run: |
+          if git status --porcelain .swift-format | grep -q .; then
+            echo "swift_format_changes=true" >> $GITHUB_ENV
+          else
+            echo "swift_format_changes=false" >> $GITHUB_ENV
+          fi
+          if git status --porcelain '*.swift' | grep -q .; then
+            echo "swift_files_changes=true" >> $GITHUB_ENV
+          else
+            echo "swift_files_changes=false" >> $GITHUB_ENV
+          fi
       - name: Add commit for swift-format file
+        if: env.swift_format_changes == 'true'
         run: |
           git add .swift-format
           git commit -m "Update .swift-format"
       - name: Add commit for swift-format
+        if: env.swift_files_changes == 'true'
         run: |
-          git add *.swift
+          git add '**/*.swift'
           git commit -m "[Generated] swift-format"
           # Store the commit hash for later use
           echo "FORMAT_COMMIT_HASH=$(git rev-parse HEAD)" >> $GITHUB_ENV
       - name: Update git-blame-ignore-revs
+        if: env.swift_files_changes == 'true'
         run: |
           # Add the formatting commit hash to .git-blame-ignore-revs
           echo "$FORMAT_COMMIT_HASH" >> .git-blame-ignore-revs
           git add .git-blame-ignore-revs
           git commit -m "Add swift-format commit to .git-blame-ignore-revs"
       - name: Create pull request
+        if: env.swift_files_changes == 'true' || env.swift_format_changes == 'true'
         uses: peter-evans/create-pull-request@v5
         with:
           branch: "generated/swift-format"