reflect output var as exit code

.github/workflows/cpp-linter.yml

@@ -13,14 +13,16 @@ jobs:
       - uses: actions/checkout@v3
       - uses: cpp-linter/cpp-linter-action@composite-action
         id: linter
+        continue-on-error: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           style: file
           files-changed-only: false
+          quiet-fail: false
 
       - name: Fail fast?!
-        if: steps.linter.outputs.checks-failed > 0
+        if: steps.linter.outcome == 'failure'
         run: |
           echo "Some files failed the linting checks!"
         # for actual deployment

action.yml

@@ -74,10 +74,10 @@ inputs:
     description: The directory containing compile_commands.json file.
     required: false
     default: ""
-outputs:
-  checks-failed:
-    description: An integer that can be used as a boolean value to indicate if all checks failed.
-    value: ${{ steps.set-checks-failed.outputs.checks-failed }}
+  quiet-fail:
+    description: A flag that can be used to exit with a non-successfull error code (not '0') if any checks failed.
+    required: false
+    default: true
 runs:
   using: "composite"
   steps:
@@ -105,3 +105,7 @@ runs:
           --ignore="${{ inputs.ignore }}" \
           --database=${{ inputs.database }} \
           --file-annotations=${{ inputs.file-annotations }}
+    - name: set output variable
+      if: steps.cpp-linter.outputs.checks-failed != 0 && inputs.quiet-fail != 'true'
+      shell: bash
+      run: exit 1