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Unified Diff: pkg/barback/lib/src/asset/internal_asset.dart

Issue 808713003: Remove barback from the repo. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 6 years ago
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Index: pkg/barback/lib/src/asset/internal_asset.dart
diff --git a/pkg/barback/lib/src/asset/internal_asset.dart b/pkg/barback/lib/src/asset/internal_asset.dart
deleted file mode 100644
index dfacba5c80e1f90c24ad564288001cf20077f1a2..0000000000000000000000000000000000000000
--- a/pkg/barback/lib/src/asset/internal_asset.dart
+++ /dev/null
@@ -1,187 +0,0 @@
-// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library barback.asset.internal_asset;
-
-import 'dart:async';
-import 'dart:convert';
-import 'dart:typed_data';
-
-import '../serialize.dart';
-import '../utils.dart';
-import '../utils/file_pool.dart';
-import '../utils/stream_replayer.dart';
-import 'asset.dart';
-import 'asset_id.dart';
-
-/// Serialize an asset to a form that's safe to send across isolates.
-Map serializeAsset(Asset asset) {
- var id = serializeId(asset.id);
- if (asset is BinaryAsset) {
- return {
- 'type': 'binary',
- 'id': id,
- 'contents': asset._contents
- };
- } else if (asset is FileAsset) {
- return {
- 'type': 'file',
- 'id': id,
- 'path': asset._path
- };
- } else if (asset is StringAsset) {
- return {
- 'type': 'string',
- 'id': id,
- 'contents': asset._contents
- };
- } else {
- // [asset] is probably a [StreamAsset], but it's possible that the user has
- // created a custom subclass, in which case we just serialize the stream
- // anyway.
- return {
- 'type': 'stream',
- 'id': id,
- 'stream': serializeStream(asset.read())
- };
- }
-}
-
-/// Deserialize an asset from the form returned by [serialize].
-Asset deserializeAsset(Map asset) {
- var id = deserializeId(asset['id']);
- switch (asset['type']) {
- case 'binary': return new BinaryAsset(id, asset['contents']);
- case 'file': return new FileAsset(id, asset['path']);
- case 'string': return new StringAsset(id, asset['contents']);
- case 'stream':
- return new StreamAsset(id, deserializeStream(asset['stream']));
- default:
- throw new FormatException('Unknown asset type "${asset['type']}".');
- }
-}
-
-/// An asset whose data is stored in a list of bytes.
-class BinaryAsset implements Asset {
- final AssetId id;
-
- final Uint8List _contents;
-
- BinaryAsset(this.id, List<int> contents)
- : _contents = toUint8List(contents);
-
- Future<String> readAsString({Encoding encoding}) {
- if (encoding == null) encoding = UTF8;
-
- return new Future.value(encoding.decode(_contents));
- }
-
- Stream<List<int>> read() => new Future<List<int>>.value(_contents).asStream();
-
- String toString() {
- var buffer = new StringBuffer();
- buffer.write("Bytes [");
-
- // Don't show the whole list if it's long.
- if (_contents.length > 11) {
- for (var i = 0; i < 5; i++) {
- buffer.write(byteToHex(_contents[i]));
- buffer.write(" ");
- }
-
- buffer.write("...");
-
- for (var i = _contents.length - 5; i < _contents.length; i++) {
- buffer.write(" ");
- buffer.write(byteToHex(_contents[i]));
- }
- } else {
- for (var i = 0; i < _contents.length; i++) {
- if (i > 0) buffer.write(" ");
- buffer.write(byteToHex(_contents[i]));
- }
- }
-
- buffer.write("]");
- return buffer.toString();
- }
-}
-
-/// An asset backed by a file on the local file system.
-class FileAsset implements Asset {
- final AssetId id;
-
- /// Use a [FilePool] to handle reads so we can try to cope with running out
- /// of file descriptors more gracefully.
- static final _pool = new FilePool();
-
- final String _path;
- FileAsset(this.id, this._path);
-
- Future<String> readAsString({Encoding encoding}) {
- if (encoding == null) encoding = UTF8;
- return _pool.readAsString(_path, encoding);
- }
-
- Stream<List<int>> read() => _pool.openRead(_path);
-
- String toString() => 'File "${_path}"';
-}
-
-/// An asset whose data is stored in a string.
-class StringAsset implements Asset {
- final AssetId id;
-
- final String _contents;
-
- StringAsset(this.id, this._contents);
-
- Future<String> readAsString({Encoding encoding}) =>
- new Future.value(_contents);
-
- Stream<List<int>> read() =>
- new Future<List<int>>.value(UTF8.encode(_contents)).asStream();
-
- String toString() {
- // Don't show the whole string if it's long.
- var contents = _contents;
- if (contents.length > 40) {
- contents = contents.substring(0, 20) + " ... " +
- contents.substring(contents.length - 20);
- }
-
- contents = _escape(contents);
- return 'String "$contents"';
- }
-
- String _escape(String string) {
- return string
- .replaceAll("\"", r'\"')
- .replaceAll("\n", r"\n")
- .replaceAll("\r", r"\r")
- .replaceAll("\t", r"\t");
- }
-}
-
-/// An asset whose data is available from a stream.
-class StreamAsset implements Asset {
- final AssetId id;
-
- /// A stream replayer that records and replays the contents of the input
- /// stream.
- final StreamReplayer<List<int>> _replayer;
-
- StreamAsset(this.id, Stream<List<int>> stream)
- : _replayer = new StreamReplayer(stream);
-
- Future<String> readAsString({Encoding encoding}) {
- if (encoding == null) encoding = UTF8;
- return _replayer.getReplay().toList()
- .then((chunks) => encoding.decode(flatten(chunks)));
- }
-
- Stream<List<int>> read() => _replayer.getReplay();
-
- String toString() => "Stream";
-}
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