Migrate to NNBD

flutter_cache_manager/CHANGELOG.md

@@ -1,3 +1,15 @@
+## [3.0.0-nullsafety.3] - 2021-03-26
+* Add null-check on id in removeFile
+
+## [3.0.0-nullsafety.2] - 2021-03-22
+* Fix sqflite warning
+
+## [3.0.0-nullsafety.1] - 2021-03-02
+* Bug fix for NonStoringObjectProvider.
+
+## [3.0.0-nullsafety.0] - 2021-02-25
+* Migration to nullsafety.
+
 ## [2.1.2] - 2021-03-09
 * Update dependencies
 * Bug fix for JsonCacheInfoRepository when file is corrupted.

flutter_cache_manager/analysis_options.yaml

@@ -9,8 +9,6 @@ analyzer:
     unused_local_variable: warning
     dead_code: warning
     invalid_override_of_non_virtual_member: error
-  enable-experiment:
-    - extension-methods
 
 linter:
   rules:

flutter_cache_manager/example/lib/generated_plugin_registrant.dart

@@ -2,6 +2,8 @@
 // Generated file. Do not edit.
 //
 
+// ignore_for_file: lines_longer_than_80_chars
+
 import 'package:url_launcher_web/url_launcher_web.dart';
 
 import 'package:flutter_web_plugins/flutter_web_plugins.dart';

flutter_cache_manager/example/lib/plugin_example/file_info_widget.dart

@@ -31,6 +31,7 @@ class FileInfoWidget extends StatelessWidget {
         ),
         Padding(
           padding: const EdgeInsets.all(10.0),
+          // ignore: deprecated_member_use
           child: RaisedButton(
             child: const Text('CLEAR CACHE'),
             onPressed: clearCache,

flutter_cache_manager/example/pubspec.yaml

@@ -1,23 +1,23 @@
 name: example
 description: A new Flutter project.
+publish_to: none
 
 version: 1.0.0+1
 
 environment:
   sdk: ">=2.10.2 <3.0.0"
 
 dependencies:
+  baseflow_plugin_template:
+    git:
+      url: git://github.com/Baseflow/baseflow_plugin_template.git
+      ref: v1.0.0
+  cupertino_icons: ^1.0.2
   flutter:
     sdk: flutter
-
   flutter_cache_manager:
     path: ../
-  cupertino_icons: ^1.0.2
   url_launcher: ^5.4.11
-  baseflow_plugin_template:
-    git:
-      url: git://github.com/Baseflow/baseflow_plugin_template.git
-      ref: v1.0.0
 
 dev_dependencies:
   flutter_test:

flutter_cache_manager/example/windows/flutter/generated_plugin_registrant.cc

@@ -2,6 +2,8 @@
 //  Generated file. Do not edit.
 //
 
+// clang-format off
+
 #include "generated_plugin_registrant.h"
 
 #include <url_launcher_windows/url_launcher_plugin.h>

flutter_cache_manager/example/windows/flutter/generated_plugin_registrant.h

@@ -2,6 +2,8 @@
 //  Generated file. Do not edit.
 //
 
+// clang-format off
+
 #ifndef GENERATED_PLUGIN_REGISTRANT_
 #define GENERATED_PLUGIN_REGISTRANT_
 

flutter_cache_manager/lib/src/cache_manager.dart

@@ -35,33 +35,32 @@ class CacheManager implements BaseCacheManager {
   /// The [fileService] can be used to customize how files are downloaded. For example
   /// to edit the urls, add headers or use a proxy. You can also choose to supply
   /// a CacheStore or WebHelper directly if you want more customization.
-  CacheManager(Config config) {
-    _config = config;
-    _store = CacheStore(config);
+  CacheManager(Config config)
+      : _config = config,
+        _store = CacheStore(config) {
     _webHelper = WebHelper(_store, config.fileService);
   }
 
   @visibleForTesting
   CacheManager.custom(
     Config config, {
-    CacheStore cacheStore,
-    WebHelper webHelper,
-  }) {
-    _config = config;
-    _store = cacheStore ?? CacheStore(config);
+    CacheStore? cacheStore,
+    WebHelper? webHelper,
+  })  : _config = config,
+        _store = cacheStore ?? CacheStore(config) {
     _webHelper = webHelper ?? WebHelper(_store, config.fileService);
   }
 
-  Config _config;
+  final Config _config;
 
   /// Store helper for cached files
-  CacheStore _store;
+  final CacheStore _store;
 
   /// Get the underlying store helper
   CacheStore get store => _store;
 
   /// WebHelper to download and store files
-  WebHelper _webHelper;
+  late final WebHelper _webHelper;
 
   /// Get the underlying web helper
   WebHelper get webHelper => _webHelper;
@@ -74,8 +73,8 @@ class CacheManager implements BaseCacheManager {
   @override
   Future<File> getSingleFile(
     String url, {
-    String key,
-    Map<String, String> headers,
+    String? key,
+    Map<String, String>? headers,
   }) async {
     key ??= url;
     final cacheFile = await getFileFromCache(key);
@@ -95,12 +94,12 @@ class CacheManager implements BaseCacheManager {
   @override
   @Deprecated('Prefer to use the new getFileStream method')
   Stream<FileInfo> getFile(String url,
-      {String key, Map<String, String> headers}) {
+      {String? key, Map<String, String>? headers}) {
     return getFileStream(
       url,
       key: key,
       withProgress: false,
-    ).map((r) => r as FileInfo);
+    ).where((r) => r is FileInfo).cast<FileInfo>();
   }
 
   /// Get the file from the cache and/or online, depending on availability and age.
@@ -116,18 +115,17 @@ class CacheManager implements BaseCacheManager {
   /// might be outdated and a new file is being downloaded in the background.
   @override
   Stream<FileResponse> getFileStream(String url,
-      {String key, Map<String, String> headers, bool withProgress}) {
+      {String? key, Map<String, String>? headers, bool withProgress = false}) {
     key ??= url;
     final streamController = StreamController<FileResponse>();
-    _pushFileToStream(
-        streamController, url, key, headers, withProgress ?? false);
+    _pushFileToStream(streamController, url, key, headers, withProgress);
     return streamController.stream;
   }
 
   Future<void> _pushFileToStream(StreamController streamController, String url,
-      String key, Map<String, String> headers, bool withProgress) async {
+      String? key, Map<String, String>? headers, bool withProgress) async {
     key ??= url;
-    FileInfo cacheFile;
+    FileInfo? cacheFile;
     try {
       cacheFile = await getFileFromCache(key);
       if (cacheFile != null) {
@@ -166,7 +164,9 @@ class CacheManager implements BaseCacheManager {
   ///Download the file and add to cache
   @override
   Future<FileInfo> downloadFile(String url,
-      {String key, Map<String, String> authHeaders, bool force = false}) async {
+      {String? key,
+      Map<String, String>? authHeaders,
+      bool force = false}) async {
     key ??= url;
     var fileResponse = await _webHelper
         .downloadFile(
@@ -182,13 +182,13 @@ class CacheManager implements BaseCacheManager {
   /// Get the file from the cache.
   /// Specify [ignoreMemCache] to force a re-read from the database
   @override
-  Future<FileInfo> getFileFromCache(String key,
+  Future<FileInfo?> getFileFromCache(String key,
           {bool ignoreMemCache = false}) =>
       _store.getFile(key, ignoreMemCache: ignoreMemCache);
 
   ///Returns the file from memory if it has already been fetched
   @override
-  Future<FileInfo> getFileFromMemory(String key) =>
+  Future<FileInfo?> getFileFromMemory(String key) =>
       _store.getFileFromMemory(key);
 
   /// Put a file in the cache. It is recommended to specify the [eTag] and the
@@ -201,15 +201,19 @@ class CacheManager implements BaseCacheManager {
   Future<File> putFile(
     String url,
     Uint8List fileBytes, {
-    String key,
-    String eTag,
+    String? key,
+    String? eTag,
     Duration maxAge = const Duration(days: 30),
     String fileExtension = 'file',
   }) async {
     key ??= url;
     var cacheObject = await _store.retrieveCacheData(key);
-    cacheObject ??= CacheObject(url,
-        key: key, relativePath: '${Uuid().v1()}.$fileExtension');
+    cacheObject ??= CacheObject(
+      url,
+      key: key,
+      relativePath: '${const Uuid().v1()}.$fileExtension',
+      validTill: DateTime.now().add(maxAge),
+    );
 
     cacheObject = cacheObject.copyWith(
       validTill: DateTime.now().add(maxAge),
@@ -233,17 +237,18 @@ class CacheManager implements BaseCacheManager {
   Future<File> putFileStream(
     String url,
     Stream<List<int>> source, {
-    String key,
-    String eTag,
+    String? key,
+    String? eTag,
     Duration maxAge = const Duration(days: 30),
     String fileExtension = 'file',
   }) async {
     key ??= url;
     var cacheObject = await _store.retrieveCacheData(key);
     cacheObject ??= CacheObject(url,
         key: key,
-        relativePath: '${Uuid().v1()}'
-            '.$fileExtension');
+        relativePath: '${const Uuid().v1()}'
+            '.$fileExtension',
+        validTill: DateTime.now().add(maxAge));
 
     cacheObject = cacheObject.copyWith(
       validTill: DateTime.now().add(maxAge),
@@ -267,8 +272,8 @@ class CacheManager implements BaseCacheManager {
   @override
   Future<void> removeFile(String key) async {
     final cacheObject = await _store.retrieveCacheData(key);
-    if (cacheObject != null) {
-      await _store.removeCachedFile(cacheObject);
+    if (cacheObject?.id != null) {
+      await _store.removeCachedFile(cacheObject!);
     }
   }
 

flutter_cache_manager/lib/src/cache_managers/base_cache_manager.dart

@@ -39,18 +39,18 @@ abstract class BaseCacheManager {
   /// returned from the cache there will be no progress given, although the file
   /// might be outdated and a new file is being downloaded in the background.
   Stream<FileResponse> getFileStream(String url,
-      {String key, Map<String, String> headers, bool withProgress});
+      {String? key, Map<String, String>? headers, bool withProgress});
 
   ///Download the file and add to cache
   Future<FileInfo> downloadFile(String url,
-      {String key, Map<String, String> authHeaders, bool force = false});
+      {String? key, Map<String, String>? authHeaders, bool force = false});
 
   /// Get the file from the cache.
   /// Specify [ignoreMemCache] to force a re-read from the database
-  Future<FileInfo> getFileFromCache(String key, {bool ignoreMemCache = false});
+  Future<FileInfo?> getFileFromCache(String key, {bool ignoreMemCache = false});
 
   ///Returns the file from memory if it has already been fetched
-  Future<FileInfo> getFileFromMemory(String key);
+  Future<FileInfo?> getFileFromMemory(String key);
 
   /// Put a file in the cache. It is recommended to specify the [eTag] and the
   /// [maxAge]. When [maxAge] is passed and the eTag is not set the file will
@@ -61,8 +61,8 @@ abstract class BaseCacheManager {
   Future<File> putFile(
     String url,
     Uint8List fileBytes, {
-    String key,
-    String eTag,
+    String? key,
+    String? eTag,
     Duration maxAge = const Duration(days: 30),
     String fileExtension = 'file',
   });
@@ -77,8 +77,8 @@ abstract class BaseCacheManager {
   Future<File> putFileStream(
     String url,
     Stream<List<int>> source, {
-    String key,
-    String eTag,
+    String? key,
+    String? eTag,
     Duration maxAge = const Duration(days: 30),
     String fileExtension = 'file',
   });

flutter_cache_manager/lib/src/cache_managers/default_cache_manager.dart

@@ -9,9 +9,8 @@ import '../config/config.dart';
 class DefaultCacheManager extends CacheManager with ImageCacheManager {
   static const key = 'libCachedImageData';
 
-  static DefaultCacheManager _instance;
+  static final DefaultCacheManager _instance = DefaultCacheManager._();
   factory DefaultCacheManager() {
-    _instance ??= DefaultCacheManager._();
     return _instance;
   }