Migrated range_header

CHANGELOG.md

@@ -26,7 +26,7 @@
 * Migrated production to 3.0.0 (0/0 tests passed)
 * Added html_builder and migrated to 2.0.0 (1/1 tests passed)
 * Migrated hot to 4.0.0 (0/0 tests passed)
-* Added range_header and migrated to 2.0.0 (16/16 tests passed)
+* Added range_header and migrated to 3.0.0 (12/12 tests passed)
 * Updated static to 3.0.0 (in progress)
 * Update basic-sdk-2.12.x boilerplate (in progress)
 

packages/range_header/example/main.dart

@@ -6,7 +6,7 @@ var file = new File('some_video.mp4');
 handleRequest(HttpRequest request) async {
   // Parse the header
   var header =
-      new RangeHeader.parse(request.headers.value(HttpHeaders.rangeHeader));
+      new RangeHeader.parse(request.headers.value(HttpHeaders.rangeHeader)!);
 
   // Optimize/canonicalize it
   var items = RangeHeader.foldItems(header.items);

packages/range_header/example/server.dart

@@ -1,16 +1,9 @@
-import 'dart:async';
-import 'dart:io' show HttpHeaders, HttpStatus;
-import 'dart:typed_data';
-import 'package:angel_framework/angel_framework.dart';
-import 'package:angel_framework/http.dart';
-import 'package:angel_static/angel_static.dart';
-import 'package:file/file.dart';
-import 'package:file/local.dart';
-import 'package:http_parser/http_parser.dart';
-import 'package:logging/logging.dart';
-import 'package:range_header/range_header.dart';
+//import 'package:angel_framework/angel_framework.dart';
+//import 'package:angel_framework/http.dart';
+//import 'package:angel_static/angel_static.dart';
 
 main() async {
+  /*
   var app = new Angel();
   var http = new AngelHttp(app);
   var fs = const LocalFileSystem();
@@ -32,8 +25,9 @@ main() async {
   app.fallback((req, res) => throw new AngelHttpException.notFound());
   await http.startServer('127.0.0.1', 3000);
   print('Listening at ${http.uri}');
+  */
 }
-
+/*
 class _RangingVirtualDirectory extends VirtualDirectory {
   _RangingVirtualDirectory(Angel app, Directory source)
       : super(app, source.fileSystem,
@@ -106,3 +100,4 @@ class _RangingVirtualDirectory extends VirtualDirectory {
     }
   }
 }
+*/

packages/range_header/lib/src/converter.dart

@@ -16,9 +16,9 @@ class RangeHeaderTransformer
   final int totalLength;
 
   RangeHeaderTransformer(this.header, this.mimeType, this.totalLength,
-      {String boundary})
+      {String? boundary})
       : this.boundary = boundary ?? _randomString() {
-    if (header == null || header.items.isEmpty) {
+    if (header.items.isEmpty) {
       throw new ArgumentError('`header` cannot be null or empty.');
     }
   }

packages/range_header/lib/src/exception.dart

@@ -6,3 +6,12 @@ class RangeHeaderParseException extends FormatException {
   @override
   String toString() => 'Range header parse exception: $message';
 }
+
+class InvalidRangeHeaderException implements Exception {
+  final String message;
+
+  InvalidRangeHeaderException(this.message);
+
+  @override
+  String toString() => 'Range header parse exception: $message';
+}

packages/range_header/lib/src/parser.dart

@@ -13,7 +13,7 @@ enum TokenType { RANGE_UNIT, COMMA, INT, DASH, EQUALS }
 
 class Token {
   final TokenType type;
-  final SourceSpan span;
+  final SourceSpan? span;
 
   Token(this.type, this.span);
 }
@@ -57,31 +57,31 @@ List<Token> scan(String text, List<String> allowedRangeUnits) {
 }
 
 class Parser {
-  Token _current;
+  Token? _current;
   int _index = -1;
   final List<Token> tokens;
 
   Parser(this.tokens);
 
-  Token get current => _current;
+  Token? get current => _current;
 
   bool get done => _index >= tokens.length - 1;
 
   RangeHeaderParseException _expected(String type) {
-    int offset = current?.span?.start?.offset;
+    int? offset = current?.span?.start.offset;
 
     if (offset == null) return new RangeHeaderParseException('Expected $type.');
 
-    Token peek;
+    Token? peek;
 
     if (_index < tokens.length - 1) peek = tokens[_index + 1];
 
     if (peek != null && peek.span != null) {
       return new RangeHeaderParseException(
-          'Expected $type at offset $offset, found "${peek.span.text}" instead. \nSource:\n${peek.span?.highlight() ?? peek.type}');
+          'Expected $type at offset $offset, found "${peek.span!.text}" instead. \nSource:\n${peek.span?.highlight() ?? peek.type}');
     } else
       return new RangeHeaderParseException(
-          'Expected $type at offset $offset, but the header string ended without one.\nSource:\n${current.span?.highlight() ?? current.type}');
+          'Expected $type at offset $offset, but the header string ended without one.\nSource:\n${current!.span?.highlight() ?? current!.type}');
   }
 
   bool next(TokenType type) {
@@ -95,13 +95,13 @@ class Parser {
       return false;
   }
 
-  RangeHeader parseRangeHeader() {
+  RangeHeader? parseRangeHeader() {
     if (next(TokenType.RANGE_UNIT)) {
-      var unit = current.span.text;
+      var unit = current!.span!.text;
       next(TokenType.EQUALS); // Consume =, if any.
 
       List<RangeHeaderItem> items = [];
-      RangeHeaderItem item = parseHeaderItem();
+      RangeHeaderItem? item = parseHeaderItem();
 
       while (item != null) {
         items.add(item);
@@ -120,13 +120,13 @@ class Parser {
       return null;
   }
 
-  RangeHeaderItem parseHeaderItem() {
+  RangeHeaderItem? parseHeaderItem() {
     if (next(TokenType.INT)) {
       // i.e 500-544, or 600-
-      var start = int.parse(current.span.text);
+      var start = int.parse(current!.span!.text);
       if (next(TokenType.DASH)) {
         if (next(TokenType.INT)) {
-          return new RangeHeaderItem(start, int.parse(current.span.text));
+          return new RangeHeaderItem(start, int.parse(current!.span!.text));
         } else
           return new RangeHeaderItem(start);
       } else
@@ -134,7 +134,7 @@ class Parser {
     } else if (next(TokenType.DASH)) {
       // i.e. -599
       if (next(TokenType.INT)) {
-        return new RangeHeaderItem(-1, int.parse(current.span.text));
+        return new RangeHeaderItem(-1, int.parse(current!.span!.text));
       } else
         throw _expected('integer');
     } else

packages/range_header/lib/src/range_header.dart

@@ -1,4 +1,5 @@
 import 'dart:collection';
+import 'exception.dart';
 import 'parser.dart';
 import 'range_header_item.dart';
 import 'range_header_impl.dart';
@@ -9,12 +10,12 @@ abstract class RangeHeader {
   UnmodifiableListView<RangeHeaderItem> get items;
 
   const factory RangeHeader(Iterable<RangeHeaderItem> items,
-      {String rangeUnit}) = _ConstantRangeHeader;
+      {String? rangeUnit}) = _ConstantRangeHeader;
 
   /// Eliminates any overlapping [items], sorts them, and folds them all into the most efficient representation possible.
   static UnmodifiableListView<RangeHeaderItem> foldItems(
       Iterable<RangeHeaderItem> items) {
-    var out = new Set<RangeHeaderItem>();
+    var out = Set<RangeHeaderItem>();
 
     for (var item in items) {
       // Remove any overlapping items, consolidate them.
@@ -37,27 +38,30 @@ abstract class RangeHeader {
   ///
   /// If [fold] is `true`, the items will be folded into the most compact
   /// possible representation.
+  ///
   factory RangeHeader.parse(String text,
-      {Iterable<String> allowedRangeUnits, bool fold: true}) {
+      {Iterable<String>? allowedRangeUnits, bool fold: true}) {
     var tokens = scan(text, allowedRangeUnits?.toList() ?? ['bytes']);
     var parser = new Parser(tokens);
     var header = parser.parseRangeHeader();
-    if (header == null) return null;
+    if (header == null) {
+      throw InvalidRangeHeaderException('Header is null');
+    }
     var items = foldItems(header.items);
     return RangeHeaderImpl(header.rangeUnit, items);
   }
 
   /// Returns this header's range unit. Most commonly, this is `bytes`.
-  String get rangeUnit;
+  String? get rangeUnit;
 }
 
 class _ConstantRangeHeader implements RangeHeader {
   final Iterable<RangeHeaderItem> items_;
-  final String rangeUnit;
+  final String? rangeUnit;
 
   const _ConstantRangeHeader(this.items_, {this.rangeUnit: 'bytes'});
 
   @override
   UnmodifiableListView<RangeHeaderItem> get items =>
-      new UnmodifiableListView(items_);
+      UnmodifiableListView(items_);
 }

packages/range_header/lib/src/range_header_impl.dart

@@ -4,11 +4,11 @@ import 'range_header_item.dart';
 
 /// Represents the contents of a parsed `Range` header.
 class RangeHeaderImpl implements RangeHeader {
-  UnmodifiableListView<RangeHeaderItem> _cached;
+  UnmodifiableListView<RangeHeaderItem>? _cached;
   final List<RangeHeaderItem> _items = [];
 
   RangeHeaderImpl(this.rangeUnit, [List<RangeHeaderItem> items = const []]) {
-    this._items.addAll(items ?? []);
+    this._items.addAll(items);
   }
 
   @override
@@ -16,5 +16,5 @@ class RangeHeaderImpl implements RangeHeader {
       _cached ??= new UnmodifiableListView<RangeHeaderItem>(_items);
 
   @override
-  final String rangeUnit;
+  final String? rangeUnit;
 }

packages/range_header/lib/src/range_header_item.dart

@@ -71,7 +71,7 @@ class RangeHeaderItem implements Comparable<RangeHeaderItem> {
   /// Please adhere to the standard!!!
   /// http://httpwg.org/specs/rfc7233.html
 
-  String toContentRange([int totalSize]) {
+  String toContentRange([int? totalSize]) {
     // var maxIndex = totalSize != null ? (totalSize - 1).toString() : '*';
     var s = start > -1 ? start : 0;
 

packages/range_header/pubspec.yaml

@@ -1,20 +1,20 @@
 name: range_header
-version: 2.0.2+2
+version: 3.0.0
 description: Range header parser for Dart. Beyond parsing, a stream transformer is included.
 author: Tobe O <thosakwe@gmail.com>
 homepage: https://github.com/thosakwe/range_header
 environment:
-  sdk: ">=2.0.0-dev <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 dependencies:
-  async: ^2.0.0
-  charcode: ^1.0.0
-  quiver_hashcode: ^2.0.0
-  source_span: ^1.0.0
-  string_scanner: ^1.0.0
+  async: ^2.6.0
+  charcode: ^1.2.0
+  quiver_hashcode: ^3.0.0+1
+  source_span: ^1.8.1
+  string_scanner: ^1.1.0
 dev_dependencies:
-  angel_framework:
-  angel_static: ^2.0.0
-  file:
-  http_parser: ^3.0.0
-  logging: ^0.11.0
-  test: ^1.0.0
+  #angel_framework:
+  #angel_static: ^2.0.0
+  file: ^6.1.0
+  http_parser: ^4.0.0
+  logging: ^1.0.1
+  test: ^1.17.3

packages/range_header/test/all_test.dart

@@ -1,27 +1,32 @@
-import 'package:range_header/range_header.dart';
 import 'package:test/test.dart';
 
+import '../lib/range_header.dart';
+import '../lib/src/range_header.dart';
+
 final Matcher throwsRangeParseException =
     throwsA(const TypeMatcher<RangeHeaderParseException>());
 
+final Matcher throwsInvalidRangeHeaderException =
+    throwsA(const TypeMatcher<InvalidRangeHeaderException>());
+
 main() {
   group('one item', () {
     test('start and end', () {
-      var r = new RangeHeader.parse('bytes 1-200');
+      var r = RangeHeader.parse('bytes 1-200');
       expect(r.items, hasLength(1));
       expect(r.items.first.start, 1);
       expect(r.items.first.end, 200);
     });
 
     test('start only', () {
-      var r = new RangeHeader.parse('bytes 1-');
+      var r = RangeHeader.parse('bytes 1-');
       expect(r.items, hasLength(1));
       expect(r.items.first.start, 1);
       expect(r.items.first.end, -1);
     });
 
     test('end only', () {
-      var r = new RangeHeader.parse('bytes -200');
+      var r = RangeHeader.parse('bytes -200');
       print(r.items);
       expect(r.items, hasLength(1));
       expect(r.items.first.start, -1);
@@ -31,7 +36,7 @@ main() {
 
   group('multiple items', () {
     test('three items', () {
-      var r = new RangeHeader.parse('bytes 1-20, 21-40, 41-60');
+      var r = RangeHeader.parse('bytes 1-20, 21-40, 41-60');
       print(r.items);
       expect(r.items, hasLength(3));
       expect(r.items[0].start, 1);
@@ -43,7 +48,7 @@ main() {
     });
 
     test('one item without end', () {
-      var r = new RangeHeader.parse('bytes 1-20, 21-');
+      var r = RangeHeader.parse('bytes 1-20, 21-');
       print(r.items);
       expect(r.items, hasLength(2));
       expect(r.items[0].start, 1);
@@ -55,42 +60,38 @@ main() {
 
   group('failures', () {
     test('no start with no end', () {
-      expect(new RangeHeader.parse('-'), isNull);
+      expect(() => RangeHeader.parse('-'), throwsInvalidRangeHeaderException);
     });
   });
 
   group('exceptions', () {
     test('invalid character', () {
-      expect(() => new RangeHeader.parse('!!!'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('!!!'), throwsRangeParseException);
     });
 
     test('no ranges', () {
-      expect(() => new RangeHeader.parse('bytes'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('bytes'), throwsRangeParseException);
     });
 
     test('no dash after int', () {
-      expect(() => new RangeHeader.parse('bytes 3'), throwsRangeParseException);
-      expect(
-          () => new RangeHeader.parse('bytes 3,'), throwsRangeParseException);
-      expect(
-          () => new RangeHeader.parse('bytes 3 24'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('bytes 3'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('bytes 3,'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('bytes 3 24'), throwsRangeParseException);
     });
 
     test('no int after dash', () {
-      expect(
-          () => new RangeHeader.parse('bytes -,'), throwsRangeParseException);
+      expect(() => RangeHeader.parse('bytes -,'), throwsRangeParseException);
     });
   });
 
   group('complete coverage', () {
     test('exception toString()', () {
-      var m = new RangeHeaderParseException('hey');
+      var m = RangeHeaderParseException('hey');
       expect(m.toString(), contains('hey'));
     });
   });
 
   test('content-range', () {
-    expect(
-        new RangeHeader.parse('bytes 1-2').items[0].toContentRange(3), '1-2/3');
+    expect(RangeHeader.parse('bytes 1-2').items[0].toContentRange(3), '1-2/3');
   });
 }