grep better

lib/device-log/helpers.ts

@@ -1,4 +1,7 @@
 import type { LogEntry } from '../commands/types';
+import { fs } from 'appium/support';
+import { createInterface } from 'node:readline';
+import _ from 'lodash';
 
 export const DEFAULT_LOG_LEVEL = 'ALL';
 export const MAX_JSON_LOG_LENGTH = 200;
@@ -11,3 +14,27 @@ export function toLogEntry(message: string, timestamp: number, level: string = D
     message,
   };
 }
+
+export interface GrepOptions {
+  caseInsensitive?: boolean;
+}
+
+export async function grepFile(
+  fullPath: string,
+  str: string,
+  opts: GrepOptions = {}
+): Promise<boolean> {
+  const input = fs.createReadStream(fullPath);
+  const rl = createInterface({input});
+  return await new Promise((resolve, reject) => {
+    input.once('error', reject);
+    rl.on('line', (line) => {
+      if (opts.caseInsensitive && _.toLower(line).includes(_.toLower(str))
+          || !opts.caseInsensitive && line.includes(str)) {
+        resolve(true);
+        input.close();
+      }
+    });
+    input.once('end', () => resolve(false));
+  });
+}

lib/device-log/ios-crash-log.ts

@@ -4,7 +4,7 @@ import path from 'path';
 import _ from 'lodash';
 import {Pyidevice} from '../real-device-clients/py-ios-device-client';
 import IOSLog from './ios-log';
-import { toLogEntry } from './helpers';
+import { toLogEntry, grepFile } from './helpers';
 import type { AppiumLogger } from '@appium/types';
 import type { BaseDeviceClient } from '../real-device-clients/base-device-client';
 import type { Simulator } from 'appium-ios-simulator';
@@ -135,12 +135,13 @@ export class IOSCrashLog extends IOSLog<TSerializedEntry, TSerializedEntry> {
       cwd: this._logDir,
       absolute: true,
     });
+    const simUdid = (this._sim as Simulator).udid;
     // For Simulator only include files, that contain current UDID
-    return await B.filter(foundFiles, async (x) => {
+    return await B.filter(foundFiles, async (filePath) => {
       try {
-        const content = await fs.readFile(x, 'utf8');
-        return content.toUpperCase().includes((this._sim as Simulator).udid.toUpperCase());
+        return await grepFile(filePath, simUdid, {caseInsensitive: true});
       } catch (err) {
+        this.log.warn(err);
         return false;
       }
     });