feat: add support for running action within a subdirectory (#366)

.github/workflows/test.yml

@@ -65,11 +65,10 @@ jobs:
         id: changed_files_expected
         with:
           separator: '\n'
+          path: test
           files: |
-            test/*.txt
-            test/*.sql
-            test/**/*.txt
-            test/**/*.sql
+            *.{txt,sql}
+            **/*.{txt,sql}
       - name: Display changed files
         if: steps.changed_files_expected.outputs.files_changed == 'true'
         run: |

action.yml

@@ -29,6 +29,10 @@ inputs:
     description: "Apply sanitization to output filenames before being set as output."
     required: false
     default: "true"
+  path:
+   description: "Relative path under GITHUB_WORKSPACE to the repository"
+   required: false
+   default: '.'
 
 outputs:
   files_changed:
@@ -67,6 +71,7 @@ runs:
         INPUT_FAIL_IF_CHANGED: ${{ inputs.fail-if-changed }}
         INPUT_FAIL_MSG: ${{ inputs.fail-message }}
         INPUT_SAFE_OUTPUT: ${{ inputs.safe_output }}
+        INPUT_PATH: ${{ inputs.path }}
 
 branding:
   icon: file-text

entrypoint.sh

@@ -8,9 +8,20 @@ INPUT_SEPARATOR="${INPUT_SEPARATOR//\\n/%0A}"
 INPUT_SEPARATOR="${INPUT_SEPARATOR//\\r/%0D}"
 
 echo "::group::verify-changed-files"
-
 echo "::debug::Separator: $INPUT_SEPARATOR"
 
+if [[ -n $INPUT_PATH ]]; then
+  REPO_DIR="$GITHUB_WORKSPACE/$INPUT_PATH"
+
+  echo "Resolving repository path: $REPO_DIR"
+  if [[ ! -d "$REPO_DIR" ]]; then
+    echo "::error::Invalid repository path: $REPO_DIR"
+    echo "::endgroup::"
+    exit 1
+  fi
+  cd "$REPO_DIR"
+fi
+
 GIT_STATUS_EXTRA_ARGS="-u --porcelain"
 
 if [[ "$INPUT_MATCH_GITIGNORE_FILES" == "true" ]]; then