xml-validation.yml: Adds general XML validation

.github/workflows/xml-validation.yml

@@ -36,3 +36,30 @@ jobs:
       - uses: actions/checkout@v3
       - run: sudo apt-get install -y moreutils parallel
       - run: find APIS -name "*.xml" | parallel --gnu --will-cite -X -j8 -u "java -jar Validation/jing.jar Validation/EpiDoc/8.13/tei-epidoc.rng {}"
+  parse-xml:
+      runs-on: ubuntu-latest
+
+      steps:
+          - uses: actions/checkout@v4
+          - uses: actions/setup-python@v5
+          - run: pip install lxml
+          - uses: jannekem/run-python-script-action@v1
+            with:
+                script: |
+                    from pathlib import Path
+                    from lxml.etree import parse, XMLSyntaxError
+
+                    encountered_errors = []
+                    root_path = Path.cwd()
+
+                    for file in root_path.rglob("*.xml"):
+                        try:
+                            parse(str(file))
+                        except XMLSyntaxError as e:
+                            encountered_errors.append(f"{file.relative_to(root_path)}: {e.msg}")
+
+                    if encountered_errors:
+                        print("\nInvalid XML encodings were found:")
+                        print("---------------------------------")
+                        print("\n".join(encountered_errors) + "\n")
+                        raise SystemExit(1)