jmesserly@google.com
d48a43957f
Also improves ./tools/line_doc_comments.dart to warn about lines >= 80 chars, to make it easier to catch these. R=sigmund@google.com Review URL: https://codereview.chromium.org//178843003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32997 260f80e4-7a28-3924-810f-c04153c831b5
43 lines
1.4 KiB
Dart
43 lines
1.4 KiB
Dart
/// This library adds `dart:io` support to the HTML5 parser. Call
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/// [initDartIOSupport] before calling the [parse] methods and they will accept
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/// a [RandomAccessFile] as input, in addition to the other input types.
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library parser_console;
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import 'dart:io';
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import 'parser.dart';
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import 'src/inputstream.dart' as inputstream;
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/// Adds support to the [HtmlParser] for running on a console VM. In particular
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/// this means it will be able to handle `dart:io` and [RandomAccessFile]s as
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/// input to the various [parse] methods.
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void useConsole() {
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inputstream.consoleSupport = new _ConsoleSupport();
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}
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class _ConsoleSupport extends inputstream.ConsoleSupport {
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List<int> bytesFromFile(source) {
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if (source is! RandomAccessFile) return null;
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return readAllBytesFromFile(source);
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}
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}
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// TODO(jmesserly): this should be `RandomAccessFile.readAllBytes`.
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/// Synchronously reads all bytes from the [file].
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List<int> readAllBytesFromFile(RandomAccessFile file) {
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int length = file.lengthSync();
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var bytes = new List<int>(length);
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int bytesRead = 0;
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while (bytesRead < length) {
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int read = file.readIntoSync(bytes, bytesRead, length - bytesRead);
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if (read <= 0) {
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// This could happen if, for example, the file was resized while
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// we're reading. Just shrink the bytes array and move on.
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bytes = bytes.sublist(0, bytesRead);
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break;
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}
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bytesRead += read;
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}
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return bytes;
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}
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