feat: 接入可选字体包同源渲染链

apps/desktop/src/application-contract.ts

@@ -52,3 +52,33 @@ export function parseThemeResourceUrl(requestUrl: string) {
     assetPath: assetSegments.join("/")
   };
 }
+
+export function parseFontPackResourceUrl(requestUrl: string) {
+  const url = new URL(requestUrl);
+  if (url.protocol !== "mdpdf:" || url.host !== "font-pack") {
+    return undefined;
+  }
+  let segments: string[];
+  try {
+    segments = url.pathname
+      .split("/")
+      .filter(Boolean)
+      .map((segment) => decodeURIComponent(segment));
+  } catch {
+    throw new Error("字体包资源地址无效");
+  }
+  const [packId, packVersion, faceId, kind, ...extra] = segments;
+  if (
+    !packId ||
+    !/^[a-z0-9]+(?:-[a-z0-9]+)*$/u.test(packId) ||
+    !packVersion ||
+    !/^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)(?:-[0-9A-Za-z.-]+)?(?:\+[0-9A-Za-z.-]+)?$/u.test(packVersion) ||
+    !faceId ||
+    !/^[a-z0-9]+(?:-[a-z0-9]+)*$/u.test(faceId) ||
+    kind !== "web" ||
+    extra.length > 0
+  ) {
+    throw new Error("字体包资源地址无效");
+  }
+  return { packId, packVersion, faceId, kind } as const;
+}