c1b5fce01b
If the target file exists but has a different file size, we need to copy the source file to the target file.
57 lines
2.0 KiB
Dart
57 lines
2.0 KiB
Dart
// Copyright (c) 2024 Xiaomi Corporation
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import 'dart:io';
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import 'dart:typed_data';
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import 'package:flutter/services.dart';
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import 'package:path/path.dart' as p;
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import 'package:path_provider/path_provider.dart';
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Future<String> generateWaveFilename([String suffix = '']) async {
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final Directory directory = await getApplicationDocumentsDirectory();
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DateTime now = DateTime.now();
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final filename =
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'${now.year.toString()}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')}-${now.hour.toString().padLeft(2, '0')}-${now.minute.toString().padLeft(2, '0')}-${now.second.toString().padLeft(2, '0')}$suffix.wav';
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return p.join(directory.path, filename);
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}
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// https://stackoverflow.com/questions/68862225/flutter-how-to-get-all-files-from-assets-folder-in-one-list
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Future<List<String>> getAllAssetFiles() async {
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final AssetManifest assetManifest =
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await AssetManifest.loadFromAssetBundle(rootBundle);
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final List<String> assets = assetManifest.listAssets();
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return assets;
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}
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String stripLeadingDirectory(String src, {int n = 1}) {
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return p.joinAll(p.split(src).sublist(n));
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}
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Future<void> copyAllAssetFiles() async {
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final allFiles = await getAllAssetFiles();
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for (final src in allFiles) {
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final dst = stripLeadingDirectory(src);
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await copyAssetFile(src, dst);
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}
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}
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// Copy the asset file from src to dst.
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// If dst already exists, then just skip the copy
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Future<String> copyAssetFile(String src, [String? dst]) async {
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final Directory directory = await getApplicationDocumentsDirectory();
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if (dst == null) {
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dst = p.basename(src);
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}
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final target = p.join(directory.path, dst);
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bool exists = await new File(target).exists();
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final data = await rootBundle.load(src);
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if (!exists || File(target).lengthSync() != data.lengthInBytes) {
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final List<int> bytes =
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data.buffer.asUint8List(data.offsetInBytes, data.lengthInBytes);
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await (await File(target).create(recursive: true)).writeAsBytes(bytes);
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}
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return target;
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}
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