Support not exiting the process in case of changes in dry mode (#122)

Co-authored-by: Conrad <grosserconrad@gmail.com>

README.md

@@ -16,6 +16,7 @@ A GitHub action for styling files with [prettier](https://prettier.io).
 | Parameter | Required | Default | Description |
 | - | :-: | :-: | - |
 | dry | :x: | `false` | Runs the action in dry mode. Files wont get changed and the action fails if there are unprettified files. Recommended to use with prettier_options --check |
+| no_commit | :x: | `false` | Can be used to avoid committing the changes (useful when another workflow step commits after this one anyways; can be combined with dry mode) |
 | prettier_version | :x: | `latest` | Specific prettier version (by default use latest) |
 | working_directory | :x: | `${{ github.action_path }}` | Specify a directory to cd into before installing prettier and running it, use relative file path to the repository root for example `app/` |
 | prettier_options | :x: | `"--write **/*.js"` | Prettier options (by default it applies to the whole repository) |

action.yml

@@ -34,6 +34,10 @@ inputs:
     description: Running the script in dry mode just shows whether there are files that should be prettified or not
     required: false
     default: false
+  no_commit:
+    description: Can be used to avoid committing the changes (can be combined with dry mode, useful when another workflow steps commits after this commit anyways)
+    required: false
+    default: false
   prettier_version:
     description: Specific version of prettier (by default just use the latest version)
     required: false
@@ -76,6 +80,7 @@ runs:
         INPUT_FILE_PATTERN: ${{ inputs.file_pattern }}
         INPUT_PRETTIER_OPTIONS: ${{ inputs.prettier_options }}
         INPUT_DRY: ${{ inputs.dry }}
+        INPUT_DRY_NO_COMMIT: ${{ inputs.no_commit }}
         INPUT_PRETTIER_VERSION: ${{ inputs.prettier_version }}
         INPUT_ONLY_CHANGED: ${{ inputs.only_changed }}
         INPUT_PRETTIER_PLUGINS: ${{ inputs.prettier_plugins }}

entrypoint.sh

@@ -79,8 +79,12 @@ if _git_changed; then
   if $INPUT_DRY; then
     echo "Unpretty Files Changes:"
     git diff
-    echo "Finishing dry-run. Exiting before committing."
+    if $INPUT_NO_COMMIT; then
-    exit 1
+        echo "There are changes that won't be commited, you can use an external job to do so."
+    else
+        echo "Finishing dry-run. Exiting before committing."
+        exit 1
+    fi
   else
     # Calling method to configure the git environemnt
     _git_setup
@@ -99,6 +103,11 @@ if _git_changed; then
       git add "${INPUT_FILE_PATTERN}" || echo "Problem adding your files with pattern ${INPUT_FILE_PATTERN}"
     fi
 
+    if $INPUT_NO_COMMIT; then
+      echo "There are changes that won't be commited, you can use an external job to do so."
+      exit 0
+    fi
+
     # Commit and push changes back
     if $INPUT_SAME_COMMIT; then
       echo "Amending the current commit..."