Adds tail functions

lib/utils/IOTools.dart

@@ -1,4 +1,6 @@
+import 'dart:convert';
 import 'dart:io';
+import 'dart:typed_data';
 
 class PathHelper {
   String pth = "";
@@ -73,3 +75,38 @@ class PathHelper {
     return pth;
   }
 }
+
+Stream<List<int>> tail(final File file) async* {
+  final randomAccess = await file.open(mode: FileMode.read);
+  var pos = await randomAccess.position();
+  var len = await randomAccess.length();
+  // Increase/decrease buffer size as needed.
+  var buf = Uint8List(8192);
+
+  Stream<Uint8List> _read() async* {
+    while (pos < len) {
+      final bytesRead = await randomAccess.readInto(buf);
+      pos += bytesRead;
+
+      yield buf.sublist(0, bytesRead);
+    }
+  }
+
+  // Step 1: read whole file
+  yield* _read();
+
+  // Step 2: wait for modify events and read more bytes from file
+  await for (final event in file.watch(events: FileSystemEvent.modify)) {
+    if ((event as FileSystemModifyEvent).contentChanged) {
+      len = await (randomAccess.length());
+      yield* _read();
+    }
+  }
+}
+
+void tailAndPrint(File file) {
+  tail(file).transform(utf8.decoder).transform(LineSplitter()).forEach((line) {
+    // Do something with the line that has been read, e.g. print it out...
+    print(line);
+  });
+}

pubspec.yaml

@@ -1,6 +1,6 @@
 name: libac_dart
 description: "Aria's Creations code library"
-version: 1.0.25
+version: 1.0.26
 homepage: "https://zontreck.com"