Provide access to stdin, stdout and stderr

Provide access to stdin, stdout and stderr

R=ager@google.com, iposva@google.com

BUG=dart:402
TEST=

Committed: https://code.google.com/p/dart/source/detail?r=1456

[Søren Gjesse, 2011-11-10 17:44:42]

This is a proposed solution for providing access to stdin, stdout and stderr.
This is not 100% ready yet as even if the streams are closed the dart executable
does not terminate.

With this change running:

void main() {
  print("hello, world!");
  stdout.write([65,13,66,10]);
  stdout.write([65,13,67,10]);
  stdout.write([65,13,68,10]);
  stdout.close();

  stdin.dataHandler = () {
    stderr.write(stdin.read());
  };
}

will output

hello, world!
B
C
D

and then start echoing what is typed to stderr.

[Mads Ager (google), 2011-11-10 18:08:51]

Makes sense to me. I think we should finish this and put it in. What do you
think Ivan?

http://codereview.chromium.org/8525002/diff/1/runtime/bin/builtin.dart
File runtime/bin/builtin.dart (right):

http://codereview.chromium.org/8525002/diff/1/runtime/bin/builtin.dart#newcode40
runtime/bin/builtin.dart:40: _stderr._id = 1;
1 -> 2

[Søren Gjesse, 2011-11-11 11:33:20]

Fixed the issue with Dart not stopping when stdio streams where closed.

Renamed a few functions for clarity.

[Mads Ager (google), 2011-11-11 11:37:36]

lgtm

http://codereview.chromium.org/8525002/diff/4001/runtime/bin/builtin.dart
File runtime/bin/builtin.dart (right):

http://codereview.chromium.org/8525002/diff/4001/runtime/bin/builtin.dart#new...
runtime/bin/builtin.dart:18: Socket _stdin ;
Remove space before ';'.