Added dry run parameter

README.md

@@ -15,6 +15,8 @@ The following parameters can be used in your custom action configuration.
 | branch | :white_check_mark: | - | The specific branch you want to merge into. Use ${{ github.head_ref }} if you want to use this with pull requests. |
 | checkpath | :x: | '.' | The path autopep8 checks |
 | autoparameters | :x: | ' ' | Parameters to use with autopep8 |
+| dry | :x: | false | Dry-run the action to fail when detecting PEP-8 uncompliant files, instead of automatically fixing them. |
+
 
 ### Example
 

action.yml

@@ -30,6 +30,10 @@ inputs:
     description: Parameters for autopep8
     required: false
     default: ''
+  dry:
+    description: Should this script apply autopep8 directly or just warn?
+    required: false
+    default: false
 
 runs:
   using: 'docker'

entrypoint.sh

@@ -32,16 +32,20 @@ autopep8 -i -r $INPUT_CHECKPATH $INPUT_AUTOPARAMETERS || echo "Problem running a
 
 if ! git diff --quiet
 then
-  echo "Commiting and pushing changes."
-  # Calling method to configure the git environemnt
-  git_setup
-  # Switch to the actual branch
-  git checkout $INPUT_BRANCH
-
-  git add "${INPUT_FILE_PATTERN}"
-
-  git commit -m "$INPUT_COMMIT_MESSAGE" --author="$GITHUB_ACTOR <$GITHUB_ACTOR@users.noreply.github.com>" ${INPUT_COMMIT_OPTIONS:+"$INPUT_COMMIT_OPTIONS"}
-  git push --set-upstream origin "HEAD:$INPUT_BRANCH"
+  if $INPUT_DRY; then
+    echo "Found non-compliant files!"
+    exit 1
+  else
+    # Calling method to configure the git environemnt
+    _git_setup
+    echo "Commiting and pushing changes..."
+    # Add changes to git
+    git add "${INPUT_FILE_PATTERN}" || echo "Problem adding your files with pattern ${INPUT_FILE_PATTERN}"
+    # Commit and push changes back
+    git commit -m "$INPUT_COMMIT_MESSAGE" --author="$GITHUB_ACTOR <$GITHUB_ACTOR@users.noreply.github.com>" ${INPUT_COMMIT_OPTIONS:+"$INPUT_COMMIT_OPTIONS"}
+    git push origin
+    echo "Changes pushed successfully."
+  fi
 else
   echo "Nothing to commit. Exiting."
 fi