Add scripts/helper/format-xml.c

scripts/helper/format-xml.c

@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Helper to format XML the way libxml2 does it - because it helps stot
+ * differences when working labwc-tweaks.
+ *
+ * Copyright (C) Johan Malm 2023
+ */
+#define _POSIX_C_SOURCE 200809L
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s <filename>\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+	const char *filename = argv[1];
+
+	/* Use XML_PARSE_NOBLANKS for xmlSaveFormatFile() to indent nicely */
+	xmlDoc *doc = xmlReadFile(filename, NULL, XML_PARSE_NOBLANKS);
+	if (!doc) {
+		fprintf(stderr, "bad file '%s'\n", filename);
+		return EXIT_FAILURE;
+	}
+	xmlSaveFormatFile(filename, doc, 1);
+	xmlFreeDoc(doc);
+	return EXIT_SUCCESS;
+}