feat: Add the -r option to the standalone HTML generator

capella_diff_tools/report.py

@@ -148,13 +148,18 @@ def generate_html(data: types.ChangeSummaryDocument) -> Markup:
 
 
 @click.command()
-@click.argument("filename")
-def main(filename):
-    with open(filename, encoding="locale") as f:
-        data = yaml.load(f, Loader=_CustomLoader)
+@click.argument("filename", type=click.File("r"))
+@click.option(
+    "-r",
+    "--report",
+    "report_file",
+    type=click.File("w"),
+    help="Write the HTML report to this file",
+)
+def main(filename: t.IO[str], report_file: t.IO[str]) -> None:
+    data = yaml.load(filename, Loader=_CustomLoader)
     html = generate_html(data)
-    with open("report.html", "w", encoding="locale") as f:
-        f.write(html)
+    report_file.write(html)
 
 
 if __name__ == "__main__":