Chore: new util run against source file

Build/lib/run-against-source-file.ts

@@ -0,0 +1,41 @@
+import { never } from 'foxts/guard';
+import { readFileByLine } from './fetch-text-by-line';
+import { processLine } from './process-line';
+
+export default async function runAgainstSourceFile(
+  filePath: string,
+  callback: (domain: string, includeAllSubDomain: boolean) => void,
+  type?: 'ruleset' | 'domainset'
+) {
+  for await (const line of readFileByLine(filePath)) {
+    const l = processLine(line);
+    if (!l) {
+      continue;
+    }
+    if (type == null) {
+      if (l.includes(',')) {
+        type = 'ruleset';
+      } else {
+        type = 'domainset';
+      }
+    }
+
+    if (type === 'ruleset') {
+      const [ruleType, domain] = l.split(',', 3);
+      if (ruleType === 'DOMAIN') {
+        callback(domain, false);
+      } else if (ruleType === 'DOMAIN-SUFFIX') {
+        callback(domain, true);
+      }
+    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition -- exhaus options
+    } else if (type === 'domainset') {
+      if (l[0] === '.') {
+        callback(l.slice(1), true);
+      } else {
+        callback(l, false);
+      }
+    } else {
+      never(type);
+    }
+  }
+}