feat: add xml preview

packages/web/src/celldata/formatXml.ts

@@ -0,0 +1,24 @@
+export default function formatXml(xml: string): string {
+  if (typeof xml !== 'string') return '';
+
+  xml = xml.replace(/>\s*</g, '><');
+
+  let formatted = '';
+  let indent = 0;
+
+  const tags = xml.split(/(<.*?>)/g).filter(s => s.trim());
+
+  for (let tag of tags) {
+    if (tag.startsWith('</')) {
+      indent--;
+      formatted += '\n' + '  '.repeat(indent) + tag;
+    } else if (tag.startsWith('<') && !tag.endsWith('/>') && !tag.startsWith('<?')) {
+      formatted += '\n' + '  '.repeat(indent) + tag;
+      indent++;
+    } else {
+      formatted += '\n' + '  '.repeat(indent) + tag;
+    }
+  }
+
+  return formatted.trim();
+}